TSUBAKIMOTO CHAIN CO. Patent applications |
Patent application number | Title | Published |
20160138684 | GUIDE SHOE - An object is to provide a guide shoe having a simple structure and suppressing a significant shift in pitch line while reducing friction losses and preventing possible noise. In a guide shoe having a shoe surface on which a traveling chain is guided, the shoe surface includes a plate guide surface which is formed on an upstream side of the shoe surface in a shoe longitudinal direction and on which only chain plates are slidably guided, a guiding protruding portion which is formed on a downstream side of the plate guide surface and on which only a chain roller or a chain bush is guided, and a continuously transitioning protruding portion that smoothly connects the plate guide surface and the guiding protruding surface together. Plate escaping portions are formed on opposite sides across the guiding protruding portion in a shoe width direction to avoid contact with the chain plates. | 05-19-2016 |
20160138676 | SILENT CHAIN - An object is to provide a silent chain that enhances the degree of design freedom for component dimensions to improve a chain strength with respect to a chain tensile force and that suppresses chain wear elongation. A silent chain includes a plurality of link plates arranged in a chain longitudinal direction and a chain width direction and coupled together by coupling pins so as to be bendable. The silent chain includes a plurality of plate longitudinal-direction trains each having the link plates arranged in the chain longitudinal direction. At least one of the plate longitudinal-direction trains includes a plurality of protruding-portion-installed plates having protruding portions protruding in the chain width direction from one side surface of a plate portion. The protruding-portion-installed plates | 05-19-2016 |
20160137948 | LUBRICANT COMPOSITION FOR CHAINS, AND CHAIN - A lubricant composition for a chain contains a base oil, a thickener, and an anticorrosive agent. The lubricant composition has a sulfur content of not more than 100 ppm by mass, a phosphorus content of not more than 1 mass %, and an aromatic content of not more than 1 mass %. | 05-19-2016 |
20160123436 | TENSIONER AND ROCKING LEVER - An object of the present invention is to provide a tensioner and a rocking lever that have simple configurations and that enable an increase in the volume of a space provided inside a plunger, the tensioner and the rocking lever being capable of preventing a stopper pin from being damaged or falling out. A plunger pin hole | 05-05-2016 |
20160123435 | TENSIONER - To provide a tensioner which can circulate a sufficient amount of oil even if there is a long time lag until pressurized oil starts to be supplied, and which exhibits a lower level of leak of oil stored therein, and which is structured simply without increasing the number of components therefore. The tensioner includes: a tensioner body having a plunger bore; a cylindrical plunger slidably inserted into the plunger bore; and biasing means for urging the plunger outward. When the tensioner is fixed to a wall surface, a body hole that extends from the wall surface up to a circumferential surface of the plunger bore is located lower than an oil discharge hole in the wall surface. | 05-05-2016 |
20160120114 | PLANT TRANSPLANTING DEVICE - The present invention provides a plant transplanting device that achieves rapid and stable transplantation with a simple structure and at low cost, prevents damage to the plants, and can be automated easily. A plant transplanting device | 05-05-2016 |
20160116022 | CHAIN - An object of the present invention is to provide a chain that employs simple structures so as to establish contact surface pressures in accordance with various conditions of use, for the purpose of reducing frictional loss and preventing wear or damage to a chain guide member, as well as reducing order-related noise. The chain | 04-28-2016 |
20160114980 | CONVEYOR BELT AND BELT CONSTITUENT MEMBERS - A conveyor belt ( | 04-28-2016 |
20160108990 | CHAIN - An object of the present invention is to provide a chain that reduces warping of connecting pins and prevents local wear in the bushings and connecting pins without causing an increase in the chain weight. Provided is a chain | 04-21-2016 |
20160073597 | PLANT HOLDER AND TRANSPLANTATION DEVICE - There is provided a plant holder capable of, with a simple configuration, causing a root of a plant stock to pass through a holding hole downwardly without damaging the root of the plant stock, preventing a leaf from drooping downward and being damaged, and improving workability when transplantation and harvest are automated without damaging the plant stock by contact with the plant stock. | 03-17-2016 |
20160068341 | ASSEMBLY/TRANSPORT APPARATUS - An assembly/transport apparatus includes: a carrier on which a transport object is mounted; a transport track; a return track that overlies the transport track in a top/bottom direction; a first transfer device that transfers the carrier between the transport track and the return track; a second transfer device that transfers the carrier between the transport track and the return track; and a frame that supports the transport track, the return track, the first transfer device and the second transfer device. The transport track includes transport driving devices that cause the carrier to travel and stop. The return track includes return driving devices that cause the carrier to travel and stop. The first transfer device includes first transfer driving devices that cause the carrier to travel and stop. The second transfer device includes second transfer driving devices that cause the carrier to travel and stop. | 03-10-2016 |
20160061299 | CHAIN TENSIONER - An object of the present invention is to provide a chain tensioner which enables operations on an elastic ring member during assembly and maintenance work to be readily performed and which is capable of eliminating protrusion of an operating portion of the elastic ring member in a direction opposite to a mounting surface, with a simple configuration. A ring holding portion | 03-03-2016 |
20160057942 | PLANT MANAGEMENT SYSTEM AND PLANT MANAGEMENT METHOD - Provided are a plant management system and a plant management method, which do not entail a substantial workload, cost, construction period, or installation space; enable a system to be easily constructed, altered and expanded; have a small maintenance load; enable processing systems to be distributed and arranged in geographically separate locations and in locations where connecting the processing systems is not easy; and are capable of preventing the occurrence of large-scale problems. A plant management system 100 has: a plurality of processing systems 140, 150; and memory tags 112, 122, wherein processing systems 140, 150 include reader-writers 142, 152, 153 and processing devices 141, 151, and, by writing plant management data into the memory tag 112 by means of the reader-writer 142 and then reading the plant management data by the reader-writer 152 of the processing system 150, the plant management data is transferred between the processing systems 140, 150. | 03-03-2016 |
20160040752 | SILENT CHAIN - An object of the present invention is to provide a silent chain which suppresses vibration and undulation while maintaining rigidity, strength, and durability and simplifying a shape of a pin hole without using a locker pin with a special shape and special material. In a silent chain | 02-11-2016 |
20160040751 | SILENT CHAIN TRANSMISSION DEVICE - An object of the present invention is to provide a silent chain transmission device which stabilizes chain behavior during chain travel to suppress an occurrence of tooth skipping and reduces a string vibration sound and a meshing noise with a simple configuration. In a silent chain transmission device | 02-11-2016 |
20160040750 | SILENT CHAIN AND SILENT CHAIN TRANSMISSION DEVICE - An object of the present invention is to provide a silent chain and a silent chain transmission device which stabilize chain behavior during chain travel to suppress an occurrence of tooth skipping and to reduce a string vibration sound and a meshing noise with simple configurations. In a silent chain | 02-11-2016 |
20150354673 | CHAIN TENSIONER - Provided is a chain tensioner that is capable of restricting the movement of a plunger at an engagement position, hardly causes its breakage and abrasion even if receiving a great force applied to the plunger, needs no setting for a backlash amount, and allows the engagement position of the plunger to be freely shifted forward and backward. | 12-10-2015 |
20150292602 | CHAIN TENSIONER - Provided is a chain tensioner that can, with a simple structure, supply sufficient and necessary oil when restarted after a long time after the stop of oil supply, and control pressing force in accordance with operating conditions during the drive, thereby reducing vibration of the chain not only when restarted but also during the drive. In a chain tensioner | 10-15-2015 |
20150282437 | PLANT CULTIVATION APPARATUS - A plant cultivation apparatus is provided, which can implement automatic spraying on leaf surfaces at any time and any number of times to improve production efficiency while preventing a facility equipped with the apparatus from having complex configuration and causing adverse effects on constituent parts. The apparatus includes a plurality of cultivation shelves | 10-08-2015 |
20150267789 | CHAIN TENSIONER - Provided is a chain tensioner that can improve the degree of freedom in setting the oil supply position with a simple structure, can supply sufficient and necessary oil when restarted after a long time after the stop of oil supply, can entirely be made shorter and smaller, and can be produced easily with reduced cost. In a chain tensioner | 09-24-2015 |
20150240932 | SPROCKET AND CHAIN TRANSMISSION MECHANISM - Provided are a sprocket and a chain transmission mechanism configured such that noise and vibrations caused by the elongation of the chain and also wear of parts are reduced, the decrease in the meshing strength of the chain and the sprocket is inhibited, and the chain service life is extended. The sprocket and chain transmission mechanism each have bottom land portion arcs of a predetermined radius and a predetermined angular range between a plurality of teeth to be meshed with the chain. The radius of each of the bottom land portion arcs satisfies the following relationship with the diameter of a roller or a bush of the meshing chain: Rb>0.505*φr+0.069*φr | 08-27-2015 |
20150240914 | SILENT CHAIN - A silent chain is provided, which can avoid impinging contact between guide plates and sprocket teeth and prevent wear loss and noise. A guide plate includes a main guide part formed on a side that engages with a sprocket, and an additional guide part formed on at least one of front and rear edges in the longitudinal direction of the chain. The additional guide part protrudes more in the longitudinal direction of the chain than an outer flank of a middle plate arranged in the same guide row and has a size that allows the additional guide part to overlap a sprocket tooth in the chain width direction when engaged with the sprocket S. | 08-27-2015 |
20150230413 | PLANT HOLDER AND TRANSPLANTATION DEVICE - A plant holder having a simple configuration, whereby the root of a plant can be made to pass through to below a holding hole without damaging, leaves are prevented from hanging down and becoming damaged, and the workability in the case of automation can be improved. The plant holder | 08-20-2015 |
20150216116 | PLANT TRANSPLANTATION DEVICE AND CULTURING PANEL - There is provided a plant transplantation device capable of reliably sucking a root of a plant into a hole portion, reliably causing the root to extend downward from the hole portion without remaining in the hole portion, and improving production efficiency without requiring monitoring or manual operations with a simple configuration. The plant transplantation device includes a suctioning means | 08-06-2015 |
20150204437 | GUIDE SHOE - An object of the present invention is to provide a guide shoe that can prevent a shortage of lubricating oil and supply the lubricating oil onto a sliding surface of the shoe in a favorable manner. To achieve the above object, the present invention provides a guide shoe that has a shoe surface for slidably guiding a running chain CH. A plate guide groove extending along a chain running direction D and guiding link plates L of the chain CH is provide in the shoe surface. An oil guide part having a pair of guide walls is provided in the bottom surface of the plate guide groove. The pair of guide walls are each formed such as to face a rear side in the chain running direction D and converge to each other toward a front side in the chain running direction D. | 07-23-2015 |
20150204218 | GUIDE SHOE - An object of the present invention is to provide a guide shoe that can prevent a shortage of lubricating oil and supply the lubricating oil onto a sliding surface of the shoe in a favorable manner. To achieve the above object, the present invention provides a guide shoe | 07-23-2015 |
20150152943 | CHAIN AND CHAIN GUIDE PLATE - The invention provides a chain and a chain guide plate that suppress occurrence of noise during chain traveling while attaining a reduction in costs and also attaining space saving. A chain includes first plate rows and second late rows. Each of the first plate rows includes a guide plate including a guide slide contact section for coming into slide contact with an inner side guide. The guide slide contact section extends in a chain longitudinal direction to be asymmetrical relative to an imaginary center line. During guiding by the inner side guide, lines drawn by the guide slide contact sections of a plurality of the guide plates are continuous in the chain longitudinal direction. | 06-04-2015 |
20150148164 | METAL CHAIN - To provide a metal chain having reduced weight and size but uncompromised strength, and manufacturable/assemblable with reduced work burden and cost. A metal chain is formed by coupling together a plurality of inner links and outer links alternately and pivotably in a longitudinal direction of the chain. Each of the outer link includes a pair of front and back pins and a pair of left and right outer plates. Each of the inner links includes a pair of front and back bushings and a pair of left and right inner plates. The pair of front and back bushings and the pair of left and right inner plates of the inner link are integrally formed as one component. | 05-28-2015 |
20150092464 | Power Control Device - A power control device is provided which can execute self-sustaining operation only when conditions for allowing the self-sustaining operation are satisfied reliably, so as to supply AC power to a power load connected with a power system before the self-sustaining operation. | 04-02-2015 |
20150045164 | CHAIN GUIDE MECHANISM - The chain guide mechanism includes a slack side guide, a tension side guide, and a link member that is capable of rotating about a predetermined rotary shaft provided so as to be fixed to an attachment subject. The link member includes a slack side pivot portion attached rotatably to the slack side guide, and the slack side pivot portion is disposed on an opposite side of the chain that is guided by the slack side guide to the predetermined rotary shaft, and in a lower position than the predetermined rotary shaft. The slack side guide is biased by its own weight toward a side of the chain that is guided by the slack side guide. | 02-12-2015 |
20150024889 | CHAIN GUIDE - The present invention provides a highly durable chain guide which is simply configured, easy to assemble, and low in material cost, and in which vibration and tilting are suppressed, enabling reductions in noise, wear, breakage, and so on. A guide shoe includes a plate housing portion which is formed on a rear surface side of a travel guiding portion, and into which a plate can be inserted from below, and in at least one location of an attachment portion or a tensioner contact portion, the plate housing portion constitutes a plate end holding portion formed to be capable of supporting an end portion of the plate from below such that the plate can be inserted therein from a direction other than from below. | 01-22-2015 |
20140357440 | CHAIN AND CONNECTING PIN - Provided are a chain and a connecting pin that enable reduction in the number of components and the workload involved in chain assembly, and that enhances the strength of a connecting pin. A chain | 12-04-2014 |
20140349796 | GUIDE FOR FLEXIBLE TRANSMISSION MEMBER - Provided is a chain guide that offers improved assembly efficiency by a more easily engageable interlock structure, operates more quietly by reducing noise caused by collision between mating parts and looseness of the shoe, and improves durability by reducing wear and fatigue of the mating parts. A lateral interlock structure formed by hole parts | 11-27-2014 |
20140335988 | CHAIN - An object of the present invention is to provide a chain reducing friction caused by sliding between the pin and the inner plate, whereby durability is improved, a frictional loss is reduced, and the reduction in size and cost can be implemented. In a silent chain, a guide row and a non-guide row, which are adjacent to each other in a longitudinal direction, are connected together in a bendable manner using a single pin movably inserted into a second pinhole of an inner plate. A hole peripheral wall surface forming the second pin hole has a plate rolling surface, and an outer peripheral surface of the pin has a pin rolling surface. During chain bending, the plate rolling surface rolls on the pin rolling surface. | 11-13-2014 |
20140323255 | CHAIN TRANSMISSION - A chain transmission is provided which is capable of reducing friction loss in the transmission of power without the risk of compromising the durability of a chain guide mechanism and the chain. The chain transmission includes a chain and a chain guide mechanism. The chain guide mechanism includes a first guide and a second guide having a smaller radius of curvature than that of the first guide. The plurality of plates include a first plate and a second plate. The first plate has a backside height set such that the first plate does not contact the first guide when the first plate is guided by the first guide and such that the first plate contacts the second guide when the first plate is guided by the second guide. | 10-30-2014 |
20140305672 | CABLE PROTECTION AND GUIDE DEVICE - A cable protection and guide device is provided, which prevents abrasion of the cable skin of a cable or the like and holds the position of a multi joint link with high precision. The cable protection and guide device is characterized in that the multi-joint link includes a link member and a holding member attached to the link member for holding the cable. The holding member includes a cylindrical base portion and a holding portion formed integrally with the cylindrical base portion, wherein the cylindrical base portion is engaged with a circular through hole of the link member, and the holding portion extends outward from the cylindrical base portion in a multi joint link width direction and is bifurcated for holding the cable from two sides, i.e. multi-joint link flexional inner side and multi-joint link flexional outer side. The holding member is rotatable with respect to the link member. | 10-16-2014 |
20140274514 | CHAIN GUIDE - A chain guide is provided in which durability is increased, weight can be reduced, material cost is reduced, the uniformity of resin orientation is improved, dimensional errors, errors in shape, internal strains, and defects are reduced, and bending rigidity such as rigidity against deflection and torsion is augmented with a simple configuration. The chain guide is provided with reinforcing ribs at a guide main body. The reinforcing ribs include first inclined reinforcing ribs and second inclined reinforcing ribs that cross each other. A zone in which the reinforcing ribs are not present is provided in the intermediate portion between two support porting. | 09-18-2014 |
20140274513 | CHAIN GUIDE - A chain guide is provided which has a simple configuration, decreases the occupation space inside an engine room, while maintaining the necessary strength, rigidity, and durability, reduces the number of production steps and material waste, reduces the production cost, prevents vibrations and breaks during the use, and has high utility. A chain guide includes a guide shoe and a base member supporting the guide shoe along the chain running direction. A first insertion groove for receiving insertion of one end portion of the base member to fix the same and a second insertion groove for receiving insertion of the other end portion to fix the same are provided below the running guide portion | 09-18-2014 |
20140262421 | TUBULAR CABLE PROTECTION AND GUIDE DEVICE - A tubular cable protection and guide device is provided. The tubular cable protection and cable device includes an elastomer resin sheet that has: an outer circumference wall forming portion, a pair of sidewall forming portions on the left and right sides, and a pair of inner circumference wall forming portions on the left and right sides. The inner circumference wall forming portions have a pair of locking portions. When a cable receiving room is formed, the pair of locking portions is engaged with each other along a sheet longitudinal direction on a flexional inner circumference side, such that the inner circumference wall forming portions form a wall facing the outer circumference wall forming portion. The locking portions each includes a plurality of ridges that extend in the sheet longitudinal direction and are arranged in the transverse direction to be alternately inserted between each other when engaged with each other. | 09-18-2014 |
20140248983 | CHAIN GUIDE - The occupation space of a chain inside an engine room can be reduced, while the necessary strength, rigidity, and durability are maintained, the sheet thickness can be decreased, the number of production steps and material waste can be reduced, stress concentration and strains during bending and fixing can be reduced, load offset during fixing and loosening of bolts or the like can be prevented, the increase in vibrations and noise during the use can be prevented, the maintenance operation load can be reduced, and utility can be increased with a simple configuration. A chain guide is provided with a base member supporting a guide shoe. The base member has a base mounting portion and base wall portions formed to sandwich the guide shoe from both sides in a width direction. The guide shoe has a guide shoe mounting portion at a position apart from the base mounting portion in the chain running direction. | 09-04-2014 |
20140243132 | CHAIN GUIDE - There is provided a chain guide that reduces a space occupied by the chain guide in an engine room while maintaining required strength, rigidity, and durability with a simple configuration, reduces the number of manufacturing steps and the waste of a material, does not require a structure that permits an error, prevents increases in vibration and noise during use, and reduces the burden of a maintenance operation. The chain guide has a guide shoe and a base member that reinforces the guide shoe, and an attachment portion includes an attachment member that is provided separately from the guide shoe and the base member and can be fixed to at least one of the guide shoe and the base member or both of the guide shoe and the base member. | 08-28-2014 |
20140213401 | CHAIN GUIDE - By employing a simple configuration, a space required for engine room can be minimized while securing enough strength, rigidity, and durability, and a reduction in a material waste, manufacturing processes, and manufacturing cost can be accomplished while occurrence of a crack or breakage during use is prevented. A chain guide includes a guide shoe, a base member configured to reinforce the guide shoe, and attaching sections. The base member is formed by a bar made of a metal material. | 07-31-2014 |
20140200104 | CHAIN TENSIONER - To provide a chain tensioner that has a simple structure, is universally usable, is capable of supplying sufficient and necessary oil when restarted after a long time after the stop of oil supply, enables reduction in entire length and size, and enables easy production and reduction in production cost. An urging unit | 07-17-2014 |
20140182262 | CABLE PROTECTION AND GUIDE DEVICE - A cable protection and guide device is provided, which prevents abrasion of the cable skin of a cable or the like and holds the position of a multi-joint link with high precision. The cable protection and guide device is characterized in that the multi-joint link includes a link member and a pair of holding members attached to the link member for holding the cable. A flexional inner side holding member has an inner side base part and an inner side holding part that are integrally formed. A flexional outer side holding member has an outer side base part and an outer side holding part that are integrally formed, and the outer side holding part cooperates with the inner side holding part to hold the cable. | 07-03-2014 |
20140179473 | CHAIN GUIDE - The invention provides a chain guide capable of reducing a space the guide occupies in an engine room while maintaining necessary strength, rigidity, and durability with a simple configuration, reducing manufacturing man-hour and a waste of a material, preventing an increase in vibration and noise during use without necessity of forming a structure for allowing an error, and reducing a maintenance work load. A chain guide includes a guide shoe and a base member configured to support the guide shoe. The base member includes a base attaching section extending perpendicularly to a chain traveling direction. The guide shoe includes a guide shoe attaching section extending perpendicularly to the chain traveling direction in a position spaced apart from the base attaching section in the chain traveling direction. | 06-26-2014 |
20140174783 | CABLE PROTECTION AND GUIDE DEVICE - A cable protection and guide device, which prevents abrasion of the cable skin of a cable or the like and holds the position of a multi-joint link with high precision, is provided. The multi-joint link includes a link member and a holding member attached to the link member for holding the cable. The holding member has a base part to be engaged with a link side locking part and a holding part that extends from the base part, wherein the base part and the holding part are integrally formed. One of the link side locking part and the base part includes a pair of locking concaves arranged in the multi-joint link width direction while the other one includes a pair of locking claws arranged in the multi-joint link width direction and extending in a link flexional inner-outer direction to be engaged with the locking concaves respectively. | 06-26-2014 |
20140166443 | CHAIN CONVEYOR - A chain conveyor includes a chain constituted of a plurality of links foldably coupled by pins. The links include roller-equipped links each having a roller. The chain conveyor includes a pushing-up mechanism for pushing up each roller to a protruding position. At the protruding position, each roller protrudes upward above a loading surface of the chain, on which articles are loaded. Accumulated articles are supported by the rollers arranged at the protruding position so that the articles are separate from and above the loading surface. | 06-19-2014 |
20140148288 | CHAIN GUIDE - There is provided a chain guide capable of improving rigidity and durability without enlarging its structure to the side opposite to a chain travel surface with a simple configuration, and reducing the size of a guide shoe without increasing the number of components to thereby lower manufacturing cost. The chain guide includes the guide shoe and a guide body that supports the guide shoe, and the guide body has support wall portions that are provided near at least one side of both sides of the guide shoe in a width direction thereof so as to extend to the side of a chain at least at one position. | 05-29-2014 |
20140141913 | CHAIN - A chain is provided, whose strength is increased and whose power loss is reduced as a result of reduced friction resistance between link units and link plates. A pair of link plates | 05-22-2014 |
20140109701 | TWO-WAY PUSH-PULL CHAIN AND RECIPROCATING ACTUATOR - A link member includes a first pin hole, a second pin hole, a first engaging portion, and a second engaging portion. The second pin hole is an elongated hole extending in a longitudinal direction of a two-way push-pull chain. The pin is movably inserted into the second pin hole and fixed to the first pin hole. With the pin being movably inserted into the second pin hole, adjacent link members are expandable and contractible relative to each other by a length. The length is greater than a length of a portion where the first engaging portion contacts the second engaging portion in a state where the adjacent link members are contracted relative to each other. | 04-24-2014 |
20140100068 | CHAIN TENSIONER - To provide a chain tensioner that has a simple structure, is universally usable and capable of supplying sufficient and necessary oil when restarted after a long time after the stop of oil supply, and enables reduction of its length and size. Urging unit | 04-10-2014 |
20140076082 | ENGAGEMENT CHAIN UNIT - Provided is an interlocking chain unit that has reliable and strong interlocking and avoids buckling, breaking, and bending of a rigidified chain portion. In the interlocking chain unit ( | 03-20-2014 |
20140057750 | CHAIN - Inner links of a chain are formed as an integral link unit, each having a pair of connecting pin portions and a pair of plate portions coupling the pair of connecting pin portions, so as to have higher strength and improved durability, whereby the cost of the chain is reduced because of the ease of assembly and a reduction in the number of components. The chain is formed by coupling together link units and pairs of link plates alternately and pivotally in a longitudinal direction of the chain. The link unit is formed by inseparably joining a pair of connecting pin portions and a pair of plate portions at joint parts. | 02-27-2014 |
20140057749 | CHAIN GUIDE - There is provided a chain guide capable of preventing a reduction in the durability of the chain guide. In the chain guide in which a base and a shoe are assembled together, a shoe protruding strip formed on a back surface of the shoe is engaged with a base groove that is formed in the base and continuously extends in a longitudinal direction so as to be movable in the longitudinal direction with respect to the base when the shoe expands or contracts, and be able to restrict the movement of the shoe in first and second width directions. | 02-27-2014 |
20140045632 | SILENT CHAIN - There is provided a silent chain that is reduced in weight and widthwise size by reducing the length of a short pin while preventing the occurrence of excessive stress concentration in the short pin of a rocker pin including a long pin and the short pin. The short pin of the rocker pin extends through all plates of the guide row and all plates of the non-guide row in the width direction. The short pin is provided with a first stopper, and a second stopper. A first end surface of the short pin is prevented from being positioned in a first adjacent pin hole by contact between the first stopper and the first contact portion, and a second end surface of the short pin is prevented from being positioned in a second adjacent pin hole by contact between the second stopper and the second contact portion. | 02-13-2014 |
20140041467 | ENGAGEMENT CHAIN UNIT - Provided is an interlocking chain unit configured such that chains reliably and firmly engage with each other and that the buckling and twisting of a rigidified chain portion are avoided. An interlocking chain unit is configured such that the outer edges of a plate overlap region (P) are defined by contact portion faces and flat buckling restricting end faces, and that the plate overlap region (P) is constructed from the outlines of two plate overlap portions (Pa, Pa) which are point-point-symmetric about the point (C) of intersection between hook-shaped interlocking end faces and the buckling restricting end faces . | 02-13-2014 |
20140017043 | PLANT CULTIVATION DEVICE - Provided is a plant cultivation device that improves cultivation efficiency and usability. A plant cultivation device comprises: a rack unit provided with cultivation racks on which cultivation units accommodating plants are stored as culture medium units; and a conveying device which moves along a horizontal movement path defined by a guide rail, and performs transport of the culture medium units and loading/unloading of the culture medium units to/from the cultivation racks. Multiple cultivation racks constitute a cultivation rack row, in which the cultivation racks are arranged at multiple levels in an up-down direction. The rack unit comprises: a cultivation storage constituted of multiple cultivation rack rows; and a loading/unloading station having a stock rack row, in which the holding frames of cultivation units not accommodating plants are stored as empty units. The transport device performs loading/unloading of the holding frames to/from the stock rack row. | 01-16-2014 |
20130331212 | TENSIONER - In a tensioner having a housing and a plunger protruding in an advancing direction from a plunger-accommodating hole formed in the housing. The plunger has a cylindrical outer wall for sliding contact with the wall of the plunger-accommodating hole, and a tapered the rear end wall. A small clearance between the cylindrical outer wall of the plunger and the wall of the plunger-accommodating hole allows the plunger to become inclined by a small amount, which increases as the plunger advances. The angle of the taper at a boundary where the end wall meets the cylindrical outer wall is substantially equal to the maximum inclination of the plunger when the plunger is in its fully advanced condition | 12-12-2013 |
20130324337 | HYDRAULIC TENSIONER - In a hydraulic tensioner for maintaining tension in a traveling transmission medium in an engine, oil is delivered to an expansible chamber formed by a tensioner housing and a plunger through a reserve chamber composed of an entrance reserve chamber into which oil flows from an oil supply and a supply reserve chamber from which oil flows to the expansible chamber. A partition between the entrance and supply reserve chambers establishes a communication passage that ensures an amount of oil in the supply reserve chamber sufficient to make up the loss of oil due to leakage from the expansible chamber during a long interval while engine is inoperative, and additional leakage from the expansible chamber due to reciprocating movement of the plunger when the engine is started. | 12-05-2013 |
20130319830 | CHAIN CONVEYOR APPARATUS - There is provided a chain conveyor apparatus that realizes an accumulation operating environment that allows metallic articles to be readily and temporarily dammed up and retained at an accumulation position. Reduced power is required to operate the conveyor chain. Articles are attracted to and retained on the conveyor by using the magnetic force of magnet pieces. Attraction detaching pieces are built in rows of synthetic resin link modules to detach and release the articles. A projection driving mechanism is provided along a straight area on an inner circumferential side of the conveyor chain to project the attraction detaching pieces in and out of a loading surface of the rows of synthetic resin link modules. | 12-05-2013 |
20130312554 | ENGAGEMENT CHAIN TYPE DEVICE FOR FORWARD AND BACKWARD MOVEMENT OPERATION - Provided is an interlocking chain forward and backward actuating device type device, the device being configured so that the space within the device is effectively utilized and that a device configuration most suitable for driving interlocking chains is selected to enable the interlocking chains to be smoothly driven. An interlocking chain type forward and backward actuating device ( | 11-28-2013 |
20130310206 | RATCHET-TYPE TENSIONER - In a ratchet-type tensioner having a plunger with rack teeth formed thereon and a piston with ratchet teeth that engage the rack teeth, the ratchet teeth can be disengaged from the rack teeth by insertion of a tool through a tool insertion hole in the tensioner housing and exerting a prying action on the toothed end of the piston to move the piston away from the plunger. Alternatively if an oblique camming surface is formed on the toothed end of the piston, the ratchet teeth can be disengaged from the rack teeth by pushing the tool inward against the oblique camming surface. The piston and the hole in which it slides are shaped to prevent rotation of the piston. The ratchet teeth on the piston and the rack teeth on the plunger can be oblique to allow setback of the plunger when excessive force is exerted on the plunger. | 11-21-2013 |
20130298705 | ADVANCING/RETRACTING ACTUATION DEVICE WITH MESHING CHAIN - An interlocking chain type forward and backward actuating device is provided that does not increase workload involved in assembling the device, adjusting the rotation phase, and servicing and maintaining the device. The device is capable of smoothly actuating a driven body by advancing and retracting the body, and of preventing any pulsation or the like of the meshing chain. The interlocking chain type forward and backward actuating device includes chain-guide grooves formed so as to equalize an interlocked-state pin-to-pin distance (D | 11-14-2013 |
20130288836 | HYDRAULIC TENSIONER - Deaeration of the high pressure oil chamber of a hydraulic tensioner takes place though a helical orifice formed by opposed flanks of the threads of a threaded hole in the tensioner housing and the threads of a screw inserted into the hole. The opposed flanks are maintained in spaced relationship by a force exerted by a spring washer disposed between the head of the screw and a surface of the tensioner housing surrounding the opening of the threaded hole. The flank of the thread of the hole that forms part of the boundary of the helical orifice can have a concave curvature in order to increase the aperture of the air flow path. A groove in the surface surrounding the opening of the threaded hole prevents the washer from sealing off the flow of air. This groove is disposed with its exit end at a level above its entry end. | 10-31-2013 |
20130284568 | CONVEYOR CHAIN - Disclosed is a conveyor chain ( | 10-31-2013 |
20130283945 | ENGAGEMENT CHAIN TYPE DEVICE FOR OPERATING FORWARD AND BACKWARD MOVEMENT - Provided is an interlocking chain-type forward and backward actuating device, the device being configured so that an increase in the number of parts is minimized, an increase in the size of the device is avoided, the amount of scattering of lubricating oil to the outside of the device is reduced, the wear of connection pins is reduced, the breakage of the connection pins is avoided, and the striking noise and vibration of the chains occurring during the reception of the chains are reduced. Chain guide plates are respectively provided on both sides of a pair of interlocking chains in the chain width direction. Chain locus restriction members having chain locus restriction faces in contact with rigid chain portions, which are made rigid by engaging and integrating the pair of interlocking chains with each other, are disposed so as to be adjacent to the rigid chain portions. | 10-31-2013 |
20130281238 | RING-TYPE TENSIONER - In a ring-type tensioner, a resilient ring that cooperates with external grooves formed on a plunger to restrict retracting movement of the plunger in a tensioner housing, is formed with manipulation parts that extend through a cut-out portion in the housing and have bulged portions that are spaced by gaps from opposed walls of the cut-out portions. A rod-shaped tool inserted into one of the gaps cooperates with the bulged portion and the wall on opposite sides of the gap to expand the ring. The manipulation parts can be formed with tool-holding portions. | 10-24-2013 |
20130277184 | CONVEYOR BELT - In a conveyor belt composed of hinged modular links, one or more of the modular links are composed of multiple parts at least one of which is in the form of an guide-engaging element that has a base and a protruding guide-engaging section, a pair of laterally spaced hinge knuckles on a leading or trailing edge of the base, and a single hinge knuckle on the opposite edge. The single hinge knuckle is positioned opposite the mid point between the two laterally spaced hinge knuckles. The sum of the cross-sectional areas of the two laterally spaced hinge knuckles is equal to the cross-sectional area of the single hinge knuckle. The widthwise cross-sectional area of the base of the guide-engaging element is equal to the widthwise cross-sectional area of any portion of the base of any other modular link in the belt having the same width as that of the base of the guide-engaging element. | 10-24-2013 |
20130276422 | MESHING CHAIN STOPPER - Chain detachment and chain entry are avoided, and a process for setting the length of a meshing chain is avoided, while the chain feed length can also be freely changed. A meshing chain stopper ( | 10-24-2013 |
20130274045 | RATCHET TENSIONER - There is provide a ratchet-type tensioner that enables to readily disengage a plunger from a ratchet element in maintaining an engine, that engages the plunger reliably with the ratchet element in operating the engine so as to reduce flapping noise, and that prevents seizure of the plunger. A ratchet releasing mechanism X configured to release an engagement of the ratchet teeth | 10-17-2013 |
20130267364 | SILENT CHAIN - A silent chain includes guide plates each of which has a cut-away portion on its inner side and a cut-away portion on its outer side for allowing elastic deformation of the guide plate in the longitudinal direction of the chain so that bowing of the connecting pins of the chain is reduced, and galling of the connecting pins and unbalance of the loads on the link plates of the chain are suppressed. The deepest parts of the respective cut-away portions are longitudinally offset from each other so that longitudinal elastic deformation can occur without impairing the tensile strength of the guide plate. | 10-10-2013 |
20130260934 | SILENT CHAIN - In a silent chain, rocker joint pins are composed of first and second rocker pins having mutually engaging front rolling surfaces. Each first rocker pin is fixed to pin fixing link plates of a first link, and extends through holes in other link plates of the first link. Each first pin has a back surface engaged with portions of the pin holes in the other link plates of the first link on the inner side of a pitch line, but is spaced by a gap from portions of the same pin holes on the outer side of the pitch line. The second rocker pin moves with link plates of a second link which forms a link pair with the first link, and elastically deforms the first rocker pin when the second link is flexed relative to the first link, thereby resisting flexion of the link pair and reducing impact noise. | 10-03-2013 |
20130260930 | HYDRAULIC TENSIONER - In a hydraulic tensioner, a check valve comprises a check ball disposed within a seat/retainer combination in which a ball seat and retainer are formed as a unit and connected by a bend. The check valve is mounted so that it can rotate within the tensioner housing about a center line, and formed so that its center of gravity is offset from the center line. The check valve unit therefore tends to assume a position in which its center of gravity is directly below the center line. Openings that allow flow of oil from the interior of the check valve unit to a hydraulic chamber in the tensioner are positioned so that, when the center of gravity of the check valve unit is directly below the center line, the check ball cannot block or restrict flow through the openings. | 10-03-2013 |
20130244821 | CHAIN TRANSMISSION DEVICE - In a transmission chain, guide plates are provided on opposite ends of guide rows. In a guide row, both of the guide plates can be contact guide plates arranged to contact sides of the transmission sprocket teeth. However, some of the guide rows are formed with one guide plate configured for contact with the sprocket teeth and the opposite guide plate configured so that it does not contact the sprocket teeth. The sprocket tooth-contacting plates can be on one side of the chain in some of the guide rows and on the opposite side of the chain in other guide rows. The guide plates in still other guide rows are configured so that they never contact the sides of the sprockets. | 09-19-2013 |
20130225342 | CHAIN TRANSMISSION - A transmission chain is composed of pairs of outer plates and pairs of inner plates. The plates of each pair are in opposed, spaced relation to each other. The pairs of inner plates and the pairs of outer plates are disposed in alternating, overlapping, relationship along the length of the chain, with each pair of inner plates extending in a first direction into a space between one pair of outer plates, and in a second direction, opposite to the first direction, into a space between another pair of outer plates. Connecting pins connect the alternating pairs of plates in articulating relationship. Each of the connecting pins is press-fit into holes in a pair of inner plates and fits rotatably in holes in a pair of outer plates. A guide extends into a space between the outer plates, guiding the chain by engagement with inwardly facing surfaces of the outer plates. | 08-29-2013 |
20130219852 | CABLE PROTECTION AND GUIDE DEVICE - A device capable of correcting the relatively twisted positional relationship of mutually adjacent link frame bodies, and precisely place the link frame bodies at appropriate positions. A link side plate includes a rear side plate portion having first and second linear position holding surfaces respectively at rear and front sides thereof in a longitudinal direction. The first linear position holding surface has a convex shape formed with two faces whose attitudes are mutually different with respect to a lateral direction. The second linear position holding surface has a concave shape formed with two faces whose attitudes are mutually different with respect to the lateral direction. | 08-29-2013 |
20130212998 | CABLE PROTECTION AND GUIDE DEVICE - A cable protection and guide device is capable of preventing noise and abrasion powder generated by a flexion outer circumferential connecting arm and avoiding disconnection of the arm. The device includes: a number of link frame bodies each having link side plates each having a front side plate portion connected longitudinally to a preceding link side plate to form a cable flexion inner circumferential side; a rear side plate portion connected longitudinally to a succeeding link side plate to form a cable flexion outer circumferential side; and, a flexible linkage portion interposed between the front and rear side plate portions. The link frame body also includes a flexion outer circumferential-side connecting arm whose flexion outer circumferential-side surface is provided so as to be closer to the cable flexion inner circumferential side than a flexion outer circumferential edge of the rear side plate portion. | 08-22-2013 |
20130212997 | CABLE PROTECTION AND GUIDE DEVICE - A cable protection and guide device capable of preventing abrasion powder that is otherwise generated when a link side plate slides on a support surface while switching between a linear position and a flexional position. The link side plate integrally includes: a front side plate portion connected to a longitudinally preceding link side plate to form a cable flexional inner circumferential side; a rear side plate portion connected to a longitudinally succeeding link side plate to form a cable flexional outer circumferential side; and, a flexible linkage portion interposed between the front and rear side plate portions. The rear side plate portion includes a first flexional outer circumferential end surface in an arc shape and provided on the cable flexional outer circumferential side, and, an arc center of the first flexional outer circumferential end surface longitudinally preceding a center of the linkage portion of the succeeding link side plate. | 08-22-2013 |
20130210566 | CHAIN GUIDE FOR TRANSMISSION DEVICE - In a transmission chain guide, a shoe made of synthetic resin and extending in a longitudinal direction, has a front face for sliding engagement with a transmission chain traveling in the longitudinal direction, and a back face. The guide also comprises a base made of synthetic resin and having a supporting face extending along the longitudinal direction and supporting the back face of the shoe. The shoe and the base are integrally fused together. An engaging portion of the base, integrally molded with the base, and an engaging portion of the shoe, integrally molded with the shoe, are engaged and fused with each other bidirectionally in the longitudinal direction. | 08-15-2013 |
20130205927 | ENGAGEMENT CHAIN TYPE DEVICE FOR FORWARD AND BACKWARD MOVEMENT OPERATION - In order to stably drive a body to be driven such as a lifting table, an engagement chain type device ( | 08-15-2013 |
20130203538 | CHAIN - In a transmission chain including alternately interleaved and articulably connected sets of link plates, the link plates of least one of the sets have back surfaces arranged for sliding contact with a chain guide. These back surfaces have a convex, substantially arc-shaped, curvature in the longitudinal direction of the chain, and a convex, substantially arc-shaped, curvature in the widthwise direction. The radius of curvature of the widthwise curve of the back surface of each of the link plates of the at least one set is at least as great as the radius of curvature of the curve of the same link plate in the longitudinal direction. | 08-08-2013 |
20130165285 | CHAIN - In a transmission chain, interleaved links are articulably connected by connecting pins, each connecting pin comprising two rocker pins arranged to roll on each other. Pin holes in each of at least two overlapping link plates in each interleaved pair of link plates are shaped so that each rocker pin moves with one of the overlapping link plates and is engageable with a bend-blocking surface in the pin hole in the other of the two overlapping link plates when the two overlapping link plates are in a straight part of the chain. The engagement of the rocker pins with the bend-blocking surfaces of the pin holes prevents the links from bending backward beyond their straight condition, i.e., in an outward direction, opposite to the inward direction in which the links bend relative to each other when engaging a sprocket. | 06-27-2013 |
20130109519 | Sprocket and Chain Transmission | 05-02-2013 |
20130109518 | HYDRAULIC TENSIONER | 05-02-2013 |
20130090201 | TRANSMISSION GUIDE - A transmission guide comprises a synthetic resin shoe supported by and integrally molded with a synthetic resin base by two-part molding. A guide length retaining mechanism, which can be formed by one or more protrusions on the back of the shoe and one or more cooperating recesses on the supporting surface of the base, retains the shoe against longitudinal movement relative to the base. A guide width retaining mechanism, which can be formed by projections on the edges of the shoe and cooperating holes formed in side walls extending from the supporting surface of the base, retains the shoe against widthwise movement relative to the base. | 04-11-2013 |
20130075130 | FLEXIBLE PROTECTIVE GUIDE INTERNALLY HOLDING LONG MEMBERS - A protective guide internally holds long members including at least one of flexible cables and ducts. The protective guide includes a flexible curved strip-shaped base and plural flexible sectioning members. The base is made of a synthetic resin, formed into a long plate and has a longitudinal direction. The sectioning members are also made of a synthetic resin, permitted to uprise from both ends of the base and spaced apart from each other in the longitudinal direction, the both ends being opposed to each other in a direction perpendicular to the longitudinal direction. The sectioning members cooperatively define a space for accommodating the long members along the base. The base has a cross section inwardly curved toward the space, as viewed in the longitudinal direction. Each sectioning member has a ceiling opposed to the base, the ceiling being divided into two portions in a direction perpendicular to the longitudinal direction. | 03-28-2013 |
20130075129 | FLEXIBLE PROTECTIVE GUIDE INTERNALLY HOLDING LONG MEMBERS - A protective guide has a long shape and internally holds long members including at least one of flexible cables and ducts. The protective guide includes a flexible curved strip-shaped base and a plurality of flexible sectioning members. The base is made of a synthetic resin, formed into a long plate and has a longitudinal direction. The sectioning members are also made of a synthetic resin, permitted to uprise from both ends of the base and spaced apart from each other in the longitudinal direction, the both ends being opposed to each other in a direction perpendicular to the longitudinal direction. The sectioning members cooperatively define a space for accommodating the long members along the base. The base has a cross section inwardly curved toward the space, as viewed in the longitudinal direction. | 03-28-2013 |
20130075128 | PROTECTIVE GUIDE FOR CABLES AND BRACKET USED FOR THE PROTECTIVE GUIDE - A protective guide internally holds long members including at least one of flexible cable and duct to move in harmonization with the movement needed by the long members. The guide includes a flexible long plate-shaped base made of a synthetic resin and having a longitudinal direction, flexible sectioning members made of a synthetic resin, and two brackets. The sectioning members uprise from ends of the base, spaced apart from each other by gaps in the longitudinal direction, the ends facing in a direction perpendicular to the longitudinal direction, and cooperatively define a space for accommodating the long members along the base. The brackets detachably connect ends of the base to fixed and movable members of a machine installing the guide. Each bracket has a first engaging means detachably engaging the bracket with the gaps and a second engaging means detachably connecting the bracket to the fixed or movable member. | 03-28-2013 |
20130059691 | SILENT CHAIN - In a silent chain, frictional losses and noise are reduced, and power transmitting efficiency is improved, by making the inner profile of each guide plate sufficiently high in relation to a link plate tooth of a link plate overlapped by each said guide plate that engagement between a sprocket tooth and said link plate tooth takes place before engagement of the last mentioned sprocket tooth with said guide plate, even when the chain moves laterally. The tensile hardness of the guide plates is sufficiently low in relation to the bending rigidity of the connecting pins of the chain to prevent substantial warping of the guide plates as a result of tension acting on the chain. The back surfaces of the guide plates are configured to avoid contact with a sliding contact surface of a chain guide on which a back surfaces of the link plates of said chain can slide. | 03-07-2013 |
20130059688 | TRANSMISSION GUIDE - A transmission guide comprises a synthetic resin shoe and a more rigid synthetic resin base, integrally molded by two-member molding. The base is formed with a pair of spaced, opposed, side walls extending in the direction of elongation of the base along opposite edges of a shoe-supporting surface of the base. These side walls engage respective side edges of the shoe, and extend past the front surface of the shoe so that they can restrict lateral movement of a transmission chain sliding along the front surface of the shoe. Indentations in the side walls receive protrusions formed on the edges of the shoe. Edges of the openings of the indentations are chamfered or convexly curved to avoid interference with the movement of the chain along the guide. | 03-07-2013 |
20130053197 | TRANSMISSION GUIDE - In a transmission guide, a synthetic resin shoe and a synthetic resin base are integrally molded by two part molding. Strips projecting from a supporting surface of the base extend in parallel to the longitudinal direction of the base, and concave grooves formed in the shoe, which also extend in parallel to the longitudinal direction of the base and of the shoe, receive the strips of the base and are fused with the base. | 02-28-2013 |
20130053194 | CHAIN TRANSMISSION APPARATUS - In a power transmission utilizing a bushingless roller chain, the inner links of the chain have chain guide-contacting backs that have a convex arcuate shape, and the outer links are shaped so that they do not contact the chain guides. The rollers are wider than the sprocket teeth that they engage, and widthwise gaps between the ends of the rollers and the outer link plates allow the inner link plates to move in the widthwise direction. The gap between the inner surfaces of the rollers and the outer surfaces of the connecting pins of the chain is larger than the gap between the inner surfaces of the holes in the inner link plates and the outer surfaces of the connecting pins that extend through them. | 02-28-2013 |
20130035184 | TRANSMISSION GUIDE - The synthetic resin guide in accordance with the invention comprises an elongated synthetic resin shoe having a front surface for sliding contact with the transmission medium and a back surface opposite from the front surface and a plurality of engaging members disposed in longitudinally spaced relationship to one another. The guide also comprises an elongated synthetic resin base in contact with the back surface of the shoe and supporting the shoe, the base having a plurality of longitudinally spaced engaged portions each of which engages with one of the engaging members. One engaging member is fixed to the engaged portion with which it is engaged. The other engaging members are longitudinally movable relative to the engaged portions with which they are engaged. Thus, the guide allows longitudinal thermal expansion and contraction of the shoe relative to the base. | 02-07-2013 |
20130032677 | CABLE PROTECTION AND GUIDE APPARATUS - There is provided a cable protection and guide apparatus that improves efficiency of cable insertion and maintenance when a connecting arm attached to a link plate by a hinge structure is disconnected. In order to removably connect the connecting arm to the link plate, the guide apparatus has the hinge structure composed of a hinge stem and a hook that is rotatably engaged with the hinge stem. The hinge structure has a disengagement preventing portion that prevents the hook from disengaging from the hinge stem and a rotation restricting portion that restricts the rotation of the connecting arm in the disconnected condition. The rotation restricting portion is composed of a link-side engagement element and an arm-side engagement element. In the rotation restricting condition effected by engagement of the link-side and arm-side engagement elements, a rotational angle of the connecting arm is an obtuse angle. | 02-07-2013 |
20130025252 | CABLE PROTECTION AND GUIDE APPARATUS - A cable protection and guide apparatus is configured to suppress collision noise otherwise generated between a peripheral member and link frames due to polygonal movements of the link frames. Wear and damage of the cables otherwise caused by contact with a connecting plate is prevented. The apparatus comprises a plurality of link frames each having a cable rectangularly-shaped, in cross-section, accommodating space formed by a pair of laterally and separately disposed link plates. Connecting plates crosslink the link plates on cable-bend inner and outer circumferential sides. Link frames are connected bendably with each other in a cable longitudinal direction between a cable stationary end and a cable mobile end to protect and guide the cables. The cable-bend outer circumferential side connecting plate is provided with cylindrical elastic members surrounding the connecting plate across the crosslinking direction thereof. | 01-31-2013 |
20130008143 | CABLE PROTECTION AND GUIDE APPARATUS - The invention provides a cable protection and guide apparatus allowing a protecting and guiding apparatus to be downsized by reducing a radius of a polygonal bend formed when link plates are bent back in a cable longitudinal direction between a cable stationary end and a cable mobile end and achieving smooth relative movements of shoes that face with each other between the upper and lower cable-bend inner circumferential sides by easing impact energy and impact sound of the shoes. The shoes provided on the cable-bend inner circumferential sides of the pair of link plates laterally and separately disposed have slidable-contact portions having parallelogram slidable-contact surfaces configured to face to and to mutually slidably contact with each other between upper and lower cable-bend inner circumferential sides. | 01-10-2013 |
20120329590 | HYDRAULIC TENSIONER - In a hydraulic tensioner, the seating surface of a ball-type check valve, used to allow oil to enter the oil chamber of the tensioner while blocking reverse flow of oil, is formed with one or more grooves that allow leakage of oil from the oil chamber to an oil supply passage even when the ball is seated. The groove or grooves can have a decreasing depth or decreasing width, proceeding from the opening of the oil passage of the ball seat toward the oil chamber. Plural grooves can be provided at equal circumferential intervals, and the grooves can be circumferentially inclined. In each case, the groove or grooves improve separation of the ball from the seat, and thereby improve responsiveness of the tensioner to variations in chain tension. | 12-27-2012 |
20120324788 | PLANT CULTIVATING APPARATAS - There is provided a plant cultivating apparatus for saving space in an early stage of growth of plants, increases an amount of plants cultivated per unit space to achieve higher space efficiency, and which provides an optimum environment corresponding to the growth of the plants. The plant cultivating apparatus comprises a plurality of cultivation tray storage shelves arrayed in a plurality of tiers and a plurality of rows, each of the plurality of cultivation tray storage shelves being able to store a cultivation tray capable of cultivating a plurality of plant stocks, a cultivation tray transferring mechanism for moving the cultivation tray, and a handling mechanism capable of gripping and moving the plurality of plant stocks individually from the cultivation tray. | 12-27-2012 |
20120316020 | POWER TRANSMISSION CHAIN - In a roller or bushing chain, inner link plats have an oval shape, with a guide-contacting surface continuous with arc-shaped ends, and in the form of an arc having end points that are spaced from each other by a distance greater than the chain pitch but less than the greatest distance between parts of bushing holes in the inner link plates. The outer link plates have straight parallel edges parallel to the direction of chain elongation and semicircular ends continuous with the straight edges. The configuration of the inner link plates prevents the outer link plates from coming into contact with a chain guide. | 12-13-2012 |
20120309570 | RING-TYPE TENSIONER - In a ring-type tensioner, an expansible elastic ring disposed in a groove formed in the wall of a plunger-accommodating hole cooperates with teeth formed on the plunger to restrict axial movement of the plunger. The ring and the groove in the wall of the plunger-accommodating hole have flat radial surfaces for mutual engagement. However the ring also has oblique plunger-tooth engaging surfaces. The ring has manipulable end parts that can be locked in fixed relation to each other by a tool to secure the plunger against axial movement. The tool can also be inserted into a gap between the manipulable end parts to expand the ring and thereby release the plunger. | 12-06-2012 |
20120295747 | STATIONARY CHAIN GUIDE - An elongated stationary guide for a traveling transmission chain in an engine such as a timing chain has a narrow reinforcing groove formed along the longitudinal direction of a metal base plate of the guide by surface-pressing, whereby the base plate exhibits plastic deformation. The narrow reinforcing groove extends toward the ends of the base plate past the locations at which the base plate is mounted on an engine block by mounting bolts. | 11-22-2012 |
20120244975 | RATCHET-TYPE TENSIONER - A ratchet mechanism of the ratchet tensioner comprises a toothed ratchet element slidable in a housing and movable in a sliding direction, a plunger movable in an advance/setback direction and having rack teeth engageable by the teeth of the ratchet element, and a ratchet-biasing spring for biasing the ratchet element so that its teeth engage the rack teeth. The rack teeth have stop surfaces facing in the setback direction and sliding surfaces facing the advancing direction. The sliding surfaces are curved surfaces bulging in the advancing direction and in the direction of disengagement of the ratchet element from the rack teeth, the bulge being in an area extending from an entry starting location to an entry ending location. | 09-27-2012 |
20120228437 | ARTICULATED CABLE PROTECTION AND GUIDE APPARATUS - There is provided an articulated cable protection and guide apparatus that can securely and stably guide a large number of cables, can assure durability of articulated supporting members that operate between straight and bending postures for a long period of time, and can be easily disassembled and assembled at a machine frame-side stationary end-side connector unit or at a moving end-side connector unit. The articulated cable protection and guide apparatus comprises: a stationary end-side connector unit for affixing each stationary end of articulated supporting members, cables and a flexible belt member integrally to a machine frame-side stationary end area; a moving end-side connector unit for affixing each moving end of the articulated supporting members, cables and a flexible belt member integrally to a movable-side moving end area. | 09-13-2012 |
20120225743 | Rachet-Type Tensioner - A ratchet-type tensioner capable of restricting setback of a plunger includes a ratchet mechanism that allows setback of the plunger by sliding a ratchet element in a disengaging direction to disengage ratchet teeth from rack teeth when a reaction force acts on the plunger as a result of excessive chain tension. The ratchet element is slidable in a ratchet-receiving hole, and an inclination suppressing structure that prevents the ratchet element from becoming skewed in the ratchet receiving hole to an extent such that its forward end contacts one side of the hole while its rearward end contacts the opposite sides of the hole. | 09-06-2012 |
20120205498 | CABLE PROTECTION AND GUIDE DEVICE - There is provided an articulated cable protection and guide apparatus that can securely guide and cables between a machine frame-side fixing end area and a machine movable-side moving end area without scattering abrasion powder of the articulated supporting members and the cables to the outside and that can be easily installed in the machine frame-side fixing end area and the machine movable-side moving end area. Connector units, fixed to the machine frame-side fixing end area and the machine movable-side moving end area, integrally retain articulated end portions of the articulated supporting member, cable end portions of the cables and slot end portions of the flexible belt member and seal the slot end portions of the flexible belt member. | 08-16-2012 |
20120196712 | SILENT CHAIN TRANSMISSION SYSTEM - In a silent chain transmission, noise performance is improved by preventing guide plates of a silent chain from contacting sprocket teeth before the link plates of the chain contact the sprocket teeth. The silent chain transmission comprises a silent chain in engagement with a sprocket. The silent chain comprises guide rows, each having a pair of guide plates and a plurality of middle link plates, and non-guide rows, each having a plurality of inner link plates. An engagement starting point of the middle link plate with a sprocket tooth and an engagement starting point of the inner link plate with the sprocket tooth are set at positions such that the guide plate is prevented from contacting the sprocket tooth before the respective link plates start to engage the sprocket tooth when runout of the chain in the direction of its width occurs. | 08-02-2012 |
20120196709 | RATCHET-TYPE TENSIONER - There is provided a ratchet-type tensioner whose spring stopping washer for seating a ratchet biasing spring is rigidly and readily assembled to a ratchet-receiving hole so as not to fall out of the ratchet-receiving hole and which reduces flapping noise and prevents seizure of the plunger by securely and stably operating a ratchet mechanism in operating an engine. The ratchet-type tensioner | 08-02-2012 |
20120187271 | ARTICULATED CABLE PROTECTION AND GUIDE DEVICE - There is provided an articulated cable protection and guide apparatus that can securely and stably guide a large number of cables and can assure durability of articulated supporting members operating between straight and bending postures for a long period of time. The articulated cable protection and guide apparatus comprises articulated supporting members which can be easily cut and connected. Each of the articulated supporting members includes a large number of synthetic resin block bodies linked with each other. A plurality of flexible belt members includes tubular storing portions formed in parallel in a belt width direction. | 07-26-2012 |
20120167542 | LIFTING ENGAGEMENT CHAIN UNIT - There is provided a lifting engagement chain unit that autonomously erects a pair of engagement chains, ensures engagement accuracy between link plates and improves buckling strength. A plurality of buckling restricting attachment plates is arrayed along an outer surface of the engagement chains in a chain longitudinal direction. | 07-05-2012 |
20120122619 | RATCHET-TYPE TENSIONER - In a ratchet tensioner, rack teeth on a plunger are engaged by ratchet teeth on one end of a movable plug that slides in a hole in the tensioner housing along a direction orthogonal of the direction of movement of the plunger. The movable plug is prevented from rotating in the hole in which it slides so that the ratchet teeth engage the rack teeth on the plunger smoothly and reliably. | 05-17-2012 |
20120097348 | DEVICE FOR OPENING AND CLOSING CURTAIN - There is provided a curtain opening/closing device whose number of parts is reduced, which is lightened, whose safety and durability are improved, whose installation space is reduced, whose appearance is improved and which can be installed freely along a curved surface, and a vehicle carrying the curtain opening/closing device. The curtain opening/closing device comprises a spiral long coil member, a movable member capable of moving within the long coil member, a rail member rotably and loosely fitting the long coil member and having a slit continuous in a longitudinal direction and a rotational driving section fixed at one end of the rail member and rotating and driving the long coil member. The movable member is inserted within the long coil member so as to be movable in the longitudinal direction. | 04-26-2012 |
20120073938 | CONVEYOR CHAIN - A conveyor chain that enables magnet pieces for attracting and retaining articles conveyed on the chain. The magnet pieces are incorporated into synthetic resin link modules without changing a predetermined chain width and dimensioning of other device components. A large number of link rows consisting of a number of synthetic resin link modules are connected together so as to have a predetermined chain width W. At least some of the synthetic resin link modules have magnet storing blind holes which open in the chain width direction from link side surfaces such that a magnet piece can be insertably stored in the magnet storing blind hole and securely enclosed by the link side surface of an adjacent synthetic resin link module in the chain width direction. | 03-29-2012 |
20120071287 | SILENT CHAIN HAVING DEFORMABLE GUIDE PLATES - In a silent chain, guide plates are U-shaped so that they can deform when tension is applied to the chain, thereby avoiding deformation of the connecting pins of the chain and warping of the guide plates. When the chain is unloaded, the frontmost edges of front pin holes of intermediate link plates of each link row are located forward of the frontmost edges of the front pin holes of the guide plates of the same link row, and the rearmost edges of the rear pin holes of the intermediate link plates of each link row are located rearward of the rearmost edges of the rear pin holes of the guide plates of the same link row. | 03-22-2012 |
20120058851 | POWER TRANSMITTING TOOTHED BELT AND POWER TRANSMITTING DEVICE - A power transmitting toothed belt having improved positioning accuracy between the toothed belt and a pulley, increased durability, and reduced contact noise, comprising a rubber back layer, a plurality of core wires and a rubber layer having a plurality of belt teeth, wherein the belt teeth are at oblique angle with respect to the direction of the width of the belt. The belt teeth intersect with straight pulley teeth having a pitch equal to the pitch of the belt teeth. | 03-08-2012 |
20110300978 | TIMING PULLEY - There is provided a timing pulley whose noise is low, which is light-weight, whose pulley structure is simple and which excels in workability. The timing pulley comprises a cylindrical timing hub which is fitted around a power transmitting shaft, a pair of flange members provided apart on both end portions of the timing hub and a plurality of engagement pins disposed on peripheral edge portions of the pair of flange members in the circumferential direction thereof so as to extend between and through each of the flange members and so as to engage with mating teeth of a timing belt. | 12-08-2011 |
20110300977 | SPROCKET - In a sprocket comprising a sprocket hub, sprocket teeth and a cushion plate for contacting link plates of a transmission chain, the cushion plate is formed with concave portions at angular positions corresponding to the angular positions of the tips of the sprocket teeth, thereby avoiding contact, or reducing contact pressure, between the cushion plate and the middle parts of link plates of the chain. | 12-08-2011 |
20110287880 | CHAIN TENSIONER - In a tensioner having a ratchet mechanism composed of annular teeth on a plunger and an expansible resilient ring disposed in a groove formed in the inner peripheral surface of a plunger-accommodating hole in a tensioner housing, the rear surfaces of the annular teeth have a steep slope, and the front surfaces of the annular teeth have a gradual slope with a convex curvature such that the rate of change of the slope decreases proceeding in the direction of retraction of the plunger. | 11-24-2011 |
20110269584 | BALL-TYPE TENSIONER - A tensioner for a chain or similar power transmission medium comprises a spring-biased plunger having annular rack teeth with gradually sloping forward surfaces and steeper rearward surfaces. The teeth are engaged by radially movable balls received in inclined grooves in an axially movable annular ball seat disposed in an annular groove formed in the wall of a plunger-accommodating hole in a tensioner housing. The bottoms of the inclined grooves face a steep rearward surface of a rack tooth, and the annular ball seat is axially movable in the annular groove and biased in the plunger protruding direction by a spring that exerts a biasing force greater than the biasing force exerted on the plunger. The balls and the movable annular ball seat block retraction of the plunger on engine start-up, but permit retraction when excessive force is imparted to the plunger while the plunger is in a protruding condition. | 11-03-2011 |
20110263369 | CHAIN - In a chain comprising interconnected link plates at least some of which come into sliding contact with one or more chain guides, at least some of the link plate edges that come into sliding contact with the guides have a convex curvature with different curvatures on the front and rear sides of an apex at an intermediate location. The radius of curvature on the front side of the apex is greater than the radius of curvature on the rear side of the apex. The front and rear curvatures can be circular or cycloidal. Alternatively, one of the front and rear portions can be circular while the other is cycloidal. | 10-27-2011 |
20110263368 | SEAL CHAIN - In a seal chain, a seal mechanism comprises a pair of mutually facing seal members, a first seal member of the pair being in contact with an inner plate of the chain, and a second seal member of the pair being in contact with an outer plate of the chain. A pair of resilient annular lips formed on the first seal member are in sliding contact with a surface of the second seal member. Each sealing member has lubricant-filled grooves facing the plate with which it is in contact. | 10-27-2011 |
20110256970 | CHAIN TENSIONER - In a hydraulic tensioner, a tensioner housing is provided with an oil outflow channel communicating with a high pressure oil chamber formed by a plunger and the tensioner housing. A control valve in the oil outflow channel can be adjusted manually or automatically to optimize the damping performance of the tensioner in different engines and under different operating conditions, thereby obviating individualized machining of tensioner components to achieve optimum damping. | 10-20-2011 |
20110251002 | CHAIN GUIDE MECHANISM - In a chain guide mechanism having a guide bridge for integrally holding two chain guides, a chain and a driving sprocket for more efficient assembly and maintenance, the guide bridge has a oil inlet on a surface of its sprocket-pressing base for receiving oil from an oil supply port in an engine block on which the guide bridge is mounted. The oil inlet communicates, through an internal passage within the base of the guide bridge, with an oil discharge port within a groove in which teeth of the driving sprocket travel. | 10-13-2011 |
20110245053 | TOOL HOLDING AND CONVEYING CHAIN - There is provided a tool holding and conveying chain adapted to securely lock and position a tool pot, i.e., a connecting pin, to a pin hole of either an outer or inner link plate so that the tool pot does not to turn and to achieve steady and smooth attachment and removal of a tool in and out of the tool pot with a simple attachment structure. The tool pot has a pair of positioning flat portions formed by cutting a link plate attaching outer circumferential region of the tool pot and the outer link plate has a pair of positioning cooperative flat portions formed so as to bulge out of an inner circumference to a center of a pin hole. The positioning flat portions of the tool pot is fitted into and locked by the positioning cooperative flat portions when the tool pot is attached in the link plate. | 10-06-2011 |
20110240805 | MULTI-JOINT CABLE PROTECTION AND GUIDE DEVICE - There is provided a multi-joint cable protection and guide device that fits well with a flexible belt member in a flexed posture, that steadily protects and smoothly guides cables that assume the flexed posture, that requires fewer parts and that may be readily connected and disconnected corresponding as desired according to usage. The multi-joint supporting member has the flexible belt member in which cable inserting tubular portions are unitarily molded in parallel and a train comprising a plurality of block bodies flexibly connected with each other by concave-convex snap-fittings. The train of block bodies is inserted through the cable inserting tubular portions to control and support straight and flexed postures of the flexible belt member and each block body has a flexion outer peripheral-side curved surface whose curvature is equal to a radius of a flexed circular arc in the flexed posture. | 10-06-2011 |
20110237374 | TOOTHED BELT - A toothed belt includes: a belt main body in which a plurality of cords are arranged side by side in a widthwise direction of a rubber layer; a plurality of teeth portions formed at one surface of the belt main body; and a tooth cloth covering surfaces of the teeth portions. A cloth base material is obtained by impregnating a surface layer rubber composition into an original canvas and by forming a surface layer, and an adhesion layer rubber composition is attached to one surface of the cloth base material to form an adhesion layer, thus forming the tooth cloth. The rubber layer contains: HNBR including HNBR in which a Mooney viscosity at 100° C. is in a range of from 100 to 160; and a polymer alloy obtained by finely dispersing zinc methacrylate in HNBR. The rubber layer and rubber compositions preferably contain hydrogenated carboxyl NBR. | 09-29-2011 |
20110218068 | STATIONARY GUIDE FOR CHAIN TRANSMISSION - A stationary guide for an engine timing chain is mounted by engagement of two longitudinally space mounting holes with two pins protruding from an engine block. At least one of the holes is formed with a stop wall positioned to prevent improper reverse mounting of the guide, and preferably positioned so that its abutment with the end of a mounting pin positions the guide in proper alignment with the normal path of travel of the timing chain. | 09-08-2011 |
20110183800 | LINK PLATE - A link plate for a transmission chain composed of a plurality of link plates flexibly connected to one another has a guide-contacting edge for direct sliding contact with a chain guide. The guide-contacting edge is composed of a plurality of surface portions in alternating relationship with a plurality of grooves along the direction of chain travel. | 07-28-2011 |
20110183797 | CHAIN GUIDE MECHANISM - In a chain guide mechanism in which a pair of chain guides, at least one of which is a pivoted guide, are connected by mounting bosses a bridge so that the chain guides and bridge can be preassembled along with a chain and driving sprocket to form an integrated unit for installation in an engine, the chain guides include a chain-engaging guiding surface extending in a first direction from a location adjacent the mounting bosses, and a chain pressing portion extending in a second direction, opposite the first direction, substantially from the same location adjacent the mounting bosses. The pressing surfaces clamp the chain against the sprocket when a pivotable chain guide is rotated so that its chain engaging surface is moved away from the chain. | 07-28-2011 |
20110183796 | RATCHET-TYPE TENSIONER - In a ratchet-type tensioner having a toothed ratchet piston biased toward a rack of teeth formed on a protruding plunger in a direction transverse to the direction of plunger movement, the rack teeth and the ratchet teeth are mutually engageable and inclined at angles such that the biasing force urging the teeth of the ratchet piston into engagement with the rack teeth is sufficient to block retraction of the plunger during engine start-up but can be overcome when chain tension becomes excessive during engine operation following engine start-up. | 07-28-2011 |
20110173946 | CABLE OR THE LIKE PROTECTING AND GUIDING DEVICE - The invention provides a cable protecting and guiding device with a reduced radius of flexion formed when the device is bent back in a cable longitudinal direction between cable fixing and moving ends and which attains a smooth movement by continuously sliding along slidable-contact bottom portions of shoes disposed on upper and lower parts of the flexed cable inner peripheral side. A slidable-contact bottom portion of a shoe provided on the flexed cable inner peripheral side of a pair of link plates disposed apart in the lateral direction has a parallelogram slidable-contact bottom surface that slidably contacts between upper and lower shoes on the flexed cable inner peripheral side. | 07-21-2011 |
20110152022 | TENSIONER UNIT - A tensioner unit comprises a tensioner body, a gasket in overlapping relationship to the tensioner body whereby the gasket can be sandwiched between the tensioner body and a mounting surface to which the tensioner body is to be secured, and a threaded mounting bolt inserted through a mounting hole in the tensioner body for securing the tensioner body to the mounting surface. A bolt hole is provided in the gasket, and the mounting bolt also extends through the bolt hole. The gasket grips the bolt and holds the mounting bolt, the gasket, and the tensioner body, in fixed relationship to one another, and maintains the gasket in a predetermined aligned relationship with the tensioner body when the gasket is in overlapping relationship with the tensioner body during mounting of the tensioner body on the mounting surface. | 06-23-2011 |
20110121141 | MULTIJOINT CABLE PROTECTION AND GUIDE DEVICE - The invention provides a multijoint cable protection and guide device that steadily protects and guides cables and the like that assume flexed and straight postures. The device includes a flexible belt member in which a plurality of center tubular portions through which cables are inserted and a pair of right and left side tubular portions disposed in parallel along the center tubular portions. The center tubular portions and the pair of right and left side tubular portions are integrally molded. A pair of right and left multijoint supporting members is inserted through side tubular portions of the flexible belt member. The multijoint supporting member is composed of a large number of block bodies that are flexibly connected together by concave-convex fittings. | 05-26-2011 |
20110105258 | CHAIN GUIDE MECHANISM - In a chain guide mechanism, fixed and movable guides are attached to a guide bridge by cooperation of bosses on the guides with boss-receiving holes formed in spaced-apart elements of arms of the bridge. A fixed guide is held against rotation by cooperation of a projection on its mounting boss with a notch in a boss-receiving hole in a guide bridge arm element. A base, extending from an intermediate location at which the arms come together has a pressing structure that engages bosses on a driving sprocket, and a groove for receiving teeth of the driving sprocket. | 05-05-2011 |
20110101294 | ENGAGEMENT CHAIN - The invention provides a pair of engagement chains which has inner tooth plates, bushes, outer tooth plates and connecting pins and is integrated by engaging hook portions of the inner tooth plates and hook portions of the outer tooth plates and is branched by disengaging the hook portions of the inner tooth plates and the hook portions of the outer tooth plates. The pair of engagement chains further includes inflection restricted plates having inflection restricted surfaces and inflection restricting plates having inflection restricting portions that are connected on the both ends of the connecting pins. | 05-05-2011 |
20110092326 | PULLEY FOR USE WITH TOOTHED BELT - The invention provides a toothed-belt pulley that is capable of reducing pneumatic and plosive sounds and of reducing engagement noises while stably transmitting rotational movements by suppressing widthwise wobbling of a toothed belt and while reducing a manufacturing cost of the pulley by simplifying its manufacturing process and of improving a production yield by shortening its manufacturing time. The toothed-belt pulley has a disk whose inner circumference is fittingly attached to a rotary shaft and which is provided with teeth to be engaged with the toothed belt around the outer circumference and flanges erected on the both outer sides of the toothed belt, wherein each of the teeth has a concaved recess with which the toothed belt deformably engages in the widthwise center part thereof. | 04-21-2011 |
20110065542 | SILENT CHAIN - In a chain transmission incorporating a silent chain engaged with a sprocket, the plates of the chain are connected by sets of rocker pins extending through pin holes in the plates. The pin holes are elongated toward the center of each plate, and the elongation of each pin hole is greater than the maximum amount by which the distance between points on the respective rocker pins of each set increases when said chain is inflected to the maximum extent permitted by the sprocket in a portion of the chain in seating engagement with said sprocket. | 03-17-2011 |
20110030330 | CABLE PROTECTION AND GUIDE DEVICE - The invention provides a cable protection and guide device that steadily protects and guides a cable by rigidly anchoring and preventing a connecting arm from being disengaged upwardly. The device smoothly flexes and reduces torsional deformation. The hinged connecting arm extends across the flexional outer peripheral side of a pair of spaced apart right and left link plates and has a hook portion at one end of an arm body and a hinge portion at another end. An engaging circular arc portion of the hook portion engages with an engaging shaft of the link plate. Engaging projecting portions extend from the edge of the engaging circular arc portion and interengage with engaging step portions provided on the engaging shaft. | 02-10-2011 |
20110021298 | CHAIN TENSIONER - In a chain tensioner, an expansible ring is disposed in an internal groove formed in the inner wall of a plunger-accommodating hole near an open end thereof. The ring cooperates with grooves formed on the plunger to exert a ratchet action. The relationship between the angles of the surfaces of the internal groove and the grooves on the plunger allows the plunger to protrude, restricts retraction of the plunger on start-up of a chain transmission, but allows retraction when chain tension becomes excessive. In one embodiment, in which the ring is a C-ring, the tensioner housing can be formed with external threads for mounting in a threaded hole on a timing chain cover or other engine part. In other embodiments, the ring can have externally protruding levers for manipulation of the ring. | 01-27-2011 |
20110009221 | SILENT CHAIN TRANSMISSION SYSTEM - In silent chain transmission comprising a chain composed of rows of link plates connected in articulating relationship by connecting pins, at least one sprocket is provided with a pair of flanges that guide the chain by engaging sprocket-engaging teeth on the outermost plates of the chain. | 01-13-2011 |
20100304910 | LOW FRICTION SOUND-TYPE SILENT CHAIN - In a silent chain of the inner flank engagement and outer flank seating type, the link plate teeth are arranged so that their rearwardly facing inner flanks protrude slightly beyond the outer flank overlapping link plate teeth in a preceding row when the chain is straight and in tension. The rearwardly facing inner flank is composed of an arc-shaped engagement starting region adjacent the tip and a straight engagement guiding region extending toward the root. | 12-02-2010 |
20100298078 | RATCHET-TYPE TENSIONER - In a ratchet tensioner, a linearly moving ratchet for engagement with rack teeth on a plunger is operated a piston that is spring-biased in a direction to engage the ratchet teeth with the rack, and movable by oil pressure in a direction to disengage the ratchet teeth from the rack. The piston is located within a hole in the housing and, with that hole, forms a second high pressure oil chamber that can receive oil through an oil supply path independent of the oil supply path that carries oil to a first high pressure oil chamber formed by the plunger and the tensioner housing. | 11-25-2010 |
20100298077 | RATCHET-TYPE TENSIONER - In a ratchet-type tensioner, a rocking ratchet pawl is released from a rack of teeth on a tensioner plunger following engine start-up by a hydraulically operated pin slidable in a pin hole and caused to protrude therefrom by oil under pressure received directly from an external oil supply, or alternatively from the tensioner's high pressure oil chamber through a passage in the tensioner housing. Optionally, an orifice can be provided within the pin hole to control flow of oil when the supply is excessive and to avoid leakage when the supply is insufficient. | 11-25-2010 |
20100292039 | LUBRICANT AND OIL-FREE CHAIN - An oil-free chain is constructed by alternately connecting a pair of outer link plates connected using pins and a pair of inner link plates connected using oil-impregnated bushings into which the adjacent pins of the outer link plates adjacent to the inner link plates are fitted. The oil-impregnated bushings are impregnated with a lubricant having a kinematic viscosity in the range of ISO-VG grade 46 to 460, the weight % of an ingredient having the highest content among the elution ingredients obtained by the GPC method is 95 wt % or more, Mn is 800 or more and 2300 or less, and the ratio of Mw to Mn is 1.0 or more and 1.3 or less. Oil film breakage at the sliding portions of the bushings is suppressed from occurring and the oil film strength is high such that an oil-free chain has a sufficiently long abrasion elongation-resistant life. | 11-18-2010 |
20100275571 | OIL-IMPREGNATED BUSHING, OIL-FREE CHAIN AND METHOD FOR MANUFACTURING OIL-IMPREGNATED BUSHING - The oil-free chain is obtained by connecting a pair of inner link plates which are connected by oil-impregnated bushings and a pair of outer link plates, which are connected by pins inserted into adjacent oil-impregnated bushings of adjacent inner link plates alternately. The oil-impregnated bushing is obtained by impregnating a bushing made of a metal sintered body with perfluoropolyether having a kinematic viscosity at 40° C. equal to or higher than 350 mm | 11-04-2010 |
20100267504 | CHAIN - In a transmission chain having link plates with convex edges for sliding contact with a guide surface, the plates are asymmetric in shape so that the distance from a line connecting the centers of the connecting holes and the convex edge is greatest at a position other than at the midpoint between the connecting holes. A pivoting action of the link plates takes place as they slide over a guide surface, changing the abutment point. | 10-21-2010 |
20100248879 | LUBRICANT COMPOSITION FOR CHAINS, AND CHAIN - A chain is constructed by alternately connecting a pair of outer link plates connected together with pins and a pair of inner link plates connected together with bushings into which adjacent pins of adjacent pairs of outer link plates are inserted. On the outer and inner surfaces of component parts of the chain, a lubricant composition for chains containing 95% to 80% by mass of a lubricant which is liquid at room temperature and 5% to 20% by mass of a wax which is solid at room temperature and having a consistency of from 60 to 475 and a dropping point of from 60° C. to 120° C., is adhered. | 09-30-2010 |
20100229469 | OPENING/CLOSING UNIT AND OPENING/CLOSING UNIT FOR VEHICLE WINDOWS - In a structure including rotary gears spaced apart from each other in a radial direction, and chains which are placed to face each other, engage individually with the respective rotary gears and move in an interlocking manner, have flexible chain sections and flexure preventing sections which project from the chain sections and come into engagement with each other at a point located on one end side with respect to an engaged portion where the chains engage with the rotary gears, and are attached at their one ends to a sliding body such as a window glass, the flexure preventing sections are brought into engagement with each other to prevent the chains from flexing in separating directions and join them together to make one end side of the chains a non-flexible portion in the form of an angular bar. | 09-16-2010 |
20100223901 | LIFT-DRIVING ENGAGEMENT CHAIN - A lift-driving engagement chain capable of improving buckling strength of a pair of lift-driving engagement chains, by modifying the buckling restricting flat surfaces in order to suppress the force which causes a relative slippage along buckling restricting flat surfaces between hooked inner tooth plates and outer tooth plates that contact each other through the buckling restricting flat surfaces. | 09-09-2010 |
20100216581 | SILENT CHAIN TRANSMISSION - In a silent chain transmission, the distance between the centers of front and rear pin holes of each of the inner link plates of the chain is smaller than the length of the smallest chord obtained by dividing, by the number of sprocket teeth, the circumference of a circle having a radius extending from the center of the sprocket to the center of a pin hole of a link plate of the chain when the last-mentioned link plate is fully engaged with the sprocket. | 08-26-2010 |
20100216580 | SILENT CHAIN - In a silent chain, cushion pads are provided in the inner flank regions of at least every second link row. These cushion pads restrict inward flexion of the chain and reduce vibration of the free span regions of the chain. The cushion pads can be individual pads each associated with a link plate, or elongated pads each associated with a row of link plates. In either case, side parts protruding toward the outside of the loop formed by the chain can also restrict outward flexion of the chain. | 08-26-2010 |
20100173739 | TIMING CHAIN DRIVING SYSTEM - In a timing chain drive, a hybrid driving sprocket, having roller-engaging teeth and side sprocket teeth, cooperates with a hybrid chain having rollers that mesh with the roller-engaging teeth and toothed link plates that mesh with the side sprocket teeth. A driven sprocket from which the chain travels toward the driving sprocket has a cyclically varying tooth pitch that compensates for tension variations due to cyclic variations in the rotational speed of the driving sprocket or to cyclic variations in the load applied to the driven sprocket. The driven sprocket can be a roller sprocket or a hybrid sprocket having roller-engaging teeth and side sprocket teeth for engagement with the teeth on the link plates of the chain. | 07-08-2010 |
20100160098 | CHAIN DRIVING SYSTEM - In a timing chain driving system, the tooth pitch of a driven sprocket from which a tension span of the chain travels toward a driving sprocket varies cyclically around the circumference of the driven sprocket and cyclically increases and decreases the effective length of the tension span in synchronism with cyclic variations in the rotational speed of the driving sprocket, thereby moderating fluctuations in chain tension. Marks on the side of the driven sprocket identify the locations at which the tooth pitch is largest and where the tooth pitch is smallest. | 06-24-2010 |
20100140572 | ENGAGEMENT CHAIN - There is provided an engagement chain whose driving force per occupied space is increased, whose durability is improved by reducing stress in a direction of bending a connecting pin and whose engagement noise during driving is reduced. The engagement chain includes a large number of outer and inner link plates, each having hook-like portions, which are connected in a chain longitudinal direction by connecting pins, the large number of outer and inner link plates are connected flexibly without gap in the chain width direction while the back surfaces of the link plates opposite to the hook-like portions engage with driving sprockets. | 06-10-2010 |
20100137088 | TRANSMISSION CHAIN - The invention provides a transmission chain including inner plates, bushings, outer plates, and a cylindrical hollow pin capable of supplying lubricant oil on a outer circumference of the pin across the whole area of the longitudinal direction of the pin when a chain is in operation, even when the chain is tensioned. | 06-03-2010 |
20100137085 | TIMING CHAIN DRIVE SYSTEM - In a timing chain driving system in which the speed of a driving sprocket fluctuates cyclically, the tooth pitch of a driven sprocket from which a tension span of the chain travels toward the driving sprocket varies cyclically around the circumference of the driven sprocket so that the tooth pitch at the point at which the timing chain disengages from the driven sprocket is at a minimum when the rotational speed of the driving sprocket is maximum, moderating fluctuations in chain tension. A similar effect can be achieved in the case of a driving sprocket having a cyclically varying tooth pitch by arranging the driving sprocket so that its tooth pitch is maximum at the point at which it is engaged by the chain when its rotational speed is maximum. | 06-03-2010 |
20100120568 | SILENT CHAIN WITH BUSHINGS - A silent chain with bushings comprises outer and inner links interconnected in alternating relationship. Each outer link comprises outer plates and connecting pins press-fit into the pin holes in the outer plates. Each inner link comprises a center guide plate disposed at a location midway between the sides of the chain, and toothed inner link plates on both sides of the center guide plate. Bushings are press-fit into bushing holes in the guide plate and the toothed inner link plates. The connecting pins of the outer links extend through bushings of the adjacent inner links, thereby connecting the outer and inner links of the chain are in alternating relationship. | 05-13-2010 |
20100105509 | PULLEY FOR USE WITH TOOTHED BELT - There is provided a pulley for use with a toothed belt capable of reducing the noise generated when the pulley engages with the toothed belt, while reducing the manufacturing costs and time used to manufacture the pulley. The pulley includes a disk whose inner circumference is fitly attached to a rotary shaft. The outer circumference of the pulley has teeth to be engaged with the toothed belt and flanges erected on both sides of the tooth, wherein the flanges have a plurality of through holes that penetrate through the flanges in a direction of the rotary shaft. | 04-29-2010 |
20100093475 | CHAIN - In a roller chain or a rollerless bushing chain, each outer link plate is a gourd-shaped plate having, along the direction of elongation of the chain, a narrow middle portion between two end portions larger than the middle portion. The back height of each outer link plate, is smaller than the back height of each of the inner link plates. The area of each cross-section of each outer link plate, on a section plane perpendicular to the direction of chain elongation and passing through the center of a connecting pin, is at least as large as the area of each cross-section of each inner link plate taken on a section plane perpendicular to the direction of chain elongation and passing through the center of a bushing. | 04-15-2010 |
20100081528 | SELF-LUBRICATING CHAIN - The invention relates to a self-lubricating chain which includes a connecting pin which is used to connect inner and outer link portions. The connecting pin includes a lubricating hole and a hollow portion where a lubricating oil supply may be disposed and held in place by a lid member, which provides a press fit and tight seal so as to provide a reliable lubricating oil supply and a durable chain which has improved durability. | 04-01-2010 |
20100069188 | SILENT CHAIN - In a silent chain having interleaved joint link plates and guide link plates each having a pair of teeth and a pair of pin holes, the pin holes in each of the joint link plate are elongated in the direction of elongation of the chain, and extend toward each other from the two connecting pins extending through the pin holes so that a gap is formed between each of the two connecting pins and the other. The pin holes of each of the toothed guide link plates are circular pin holes. The elongation of the pin holes of the joint link plates allows the joint links to shift longitudinally with respect to the guide link plates on engagement of the chain with a sprocket, reducing clashing noise. | 03-18-2010 |
20100059727 | ENGAGEMENT CHAIN TYPE DRIVING DEVICE - The invention relates to an engagement chain type driving device including a pair of driving sprockets, which rotate positively and reversely in opposite directions about a pair of rotating shafts, a pair of engagement chains, which engage with each other by the pair of driving sprockets so to be integrated together, and a driving source, which drives the pair of driving sprockets, wherein the engagement chain includes inner tooth plates and outer tooth plates, which each include buckling limiting flat surfaces, the inner tooth plates and outer tooth plates being brought opposite to each other and into contact with each other when the engagement chains are integrated by the pair of driving sprockets, such that the flat surfaces hold the chain engagement position. | 03-11-2010 |
20100051424 | ENGAGEMENT CHAIN - An engagement chain in which a buckling strength of a pair of engagement chains engaged with each other is improved without blocking engagement operations between inner tooth plates and between outer tooth plate. The chain includes inner tooth plates, bushes, outer tooth plates and connecting pins. Buckling limiting flat surfaces of adjoining plates are brought into surface contact with each other when opposing segments of the chain are integrated together by driving sockets. | 03-04-2010 |
20100044190 | HOISTING AND LOWERING DRIVING ENGAGEMENT MULTI-ROW CHAIN - Aspects of the invention provide a hoisting and lowering driving engagement multi-row chain in which the weight of the chain is balanced across the chain width direction so as to improve the load balance. This allows the weight of articles to be hoisted and lowered more stably hoisted and at higher positions, and results in an improvement of endurance of the chain, reduction of driving noise, miniaturization of the chain size, while the biasing or deflecting of intermediate tooth plates and inner tooth plates in the chain width direction is suppressed. | 02-25-2010 |
20090286642 | CHAIN - The outer link plates of a roller chain or rollerless bushing chain have one or more curved grooves formed by pressing, on their inner faces. The grooves connecting one of two pin holes formed in each plate to the other pin hole. | 11-19-2009 |
20090286640 | SPROCKET FOR CHAIN - A sprocket of a chain transmission has at least two different pitch angles arranged irregularly in the direction of the circumference of the sprocket's pitch circle. The diameter of the tooth gap bottom circle of the sprocket is larger than the diameter of tooth gap bottom circle of a standard sprocket having the same number of teeth. The teeth are integrally molded as a part of the sprocket by sintering. | 11-19-2009 |
20090286639 | SPROCKET FOR CHAIN - A sprocket for a chain drive using a roller or bushing chain has a plurality of different pitch angles, including both pitch angles larger than the standard pitch angle, and pitch angles smaller than the standard pitch angle. The number of pitch angles in the sprocket larger than the standard pitch angle is greater than the number of pitch angles in the sprocket smaller than the standard pitch angle. The sprocket teeth are integrally molded with the sprocket by sintering. | 11-19-2009 |
20090286634 | CHAIN - In a roller chain or bushing chain, oil introducing holes in a bushing are offset laterally from a central location between the inner link plates, located in close proximity to the inner link plates, but not buried within the holes of the inner link plates in which the bushing is press-fit. | 11-19-2009 |
20090260958 | TRACK FRAME ASSEMBLY IN CONVEYOR SYSTEM - A track frame assembly is provided which includes a frame member formed from an elongated metallic channel, a pair of elongated synthetic resin-made track rail members each fixed in place on a predetermined surface of the frame member, and a plurality of rail fixtures with which the pair of track rail members can removably be fixed to the frame member. Each of the track rail members includes a retaining projection having a retaining recess formed therein, the pair of track rail members is disposed for the retaining recesses to be opposite to each other and each chain element of the conveyor chain has a pair of engaging projections which are formed to slide in contact in the respective retaining recesses in the track rail members in pair, thus the conveyor chain being smoothly movable without disengagement from the pair of track rail member. Thus, the track frame assembly can be formed from a reduced number of parts and designed lightweight because of its structural simplicity, is easy to assemble, can retain ample strength and precision, is easy to handle and maintain and inexpensive. | 10-22-2009 |
20090247340 | CHAIN TRANSMISSION DEVICE - In a chain transmission, the link plates of a roller chain or rollerless bushing chain are formed with pairs of teeth. A sprocket has a central set of sprocket teeth for meshing with the rollers or bushings, and sets of side sprocket teeth for meshing with the sprocket. The teeth of the link plates function as a silent chain. After an inner flank of a link plate tooth comes into contact with a side sprocket tooth, a roller and an outer flank of the link plate tooth are seated on the sprocket. | 10-01-2009 |
20090247337 | CHAIN TRANSMISSION DEVICE - In a chain transmission using a hybrid chain having inner and outer links with bushings, or with bushings and rollers, the rollers mesh with a central sprocket, and the link plates have teeth that function as a silent chain, meshing with side sprockets fixed to the central sprocket. The teeth of the link plates of the inner links have a shape different from that of the teeth of the link plates of the outer links. The outer flanks of the teeth can all have the same shape, and the shape difference can be in the shapes of the inner flanks. | 10-01-2009 |
20090247335 | HYDRAULIC TENSIONER - In a hydraulic tensioner having a hollow plunger that cooperates with a housing to form a high pressure oil chamber, the movable element of the check valve that allows oil to flow into the high pressure oil chamber is a bar-like element that extends into a coiled plunger-biasing spring and is biased into engagement with a valve seat by another coiled valve-biasing spring that extends into the plunger-biasing spring. The bar-like element has a larger diameter portion the diameter of which is slightly less than the inner diameter of the plunger-biasing spring, and a smaller diameter portion the diameter of which is slightly less than the inner diameter of the valve-biasing spring. The valve-biasing spring bears against a shoulder at the location at which the smaller and larger-diameter portions of the bar-like element meet. | 10-01-2009 |
20090239691 | SILENT CHAIN - The connecting pins of a chain protrude laterally from the chain, and are bent toward the inside of the loop formed by the chain so that they can stir lubricating oil in an oil bath, preventing localized heating and oil deterioration, and so that they can splash oil toward the central part of the chain for enhanced lubrication. | 09-24-2009 |
20090209380 | SPROCKET FOR CHAIN - A sprocket for a chain drive using a roller or bushing chain has a plurality of different pitch angles, including both pitch angles larger than the standard pitch angle, and pitch angles smaller than the standard pitch angle. The number of pitch angles in the sprocket larger than the standard pitch angle is greater than the number of pitch angles in the sprocket smaller than the standard pitch angle. | 08-20-2009 |
20090209378 | HYDRAULIC TENSIONER - The hollow plunger of a hydraulic tensioner, slidably receives a sleeve that divides the high pressure oil chamber into two parts. The first part is formed by the plunger and a plunger-accommodating hole of the tensioner housing. The second part is formed by the plunger and the sleeve. Two springs, one being in the first part, and the other being in the second part, urge the plunger in the protruding direction. When the second part is filled with oil during ordinary engine operation, a negative pressure in the second part exerts a force opposing protruding movement of the plunger. Therefore, the springs can be made strong enough to prevent excessive chain vibration and noise during engine start-up when the parts of the high pressure oil chamber are not filled with oil, without causing the tensioner to exert excessive force on the chain during ordinary engine operation. | 08-20-2009 |
20090209377 | HYDRAULIC TENSIONER - In a hydraulic tensioner having a coiled plunger-biasing spring, the volume of the high pressure oil chamber is reduced by incorporating a bar inside the spring. One of both ends of the spring are formed to block passage of the bar, so that the bar and spring can be installed as a pre-assembled unit, and dropping of the bar out of the spring can be avoided. | 08-20-2009 |
20090209376 | HYDRAULIC TENSIONER - In a hydraulic tensioner, at least a part of a bar is located within a coil spring that biases a plunger in the protruding direction. The bar reduces the volume of the high pressure oil chamber of the tensioner. | 08-20-2009 |
20090186732 | SILENT CHAIN - In a silent chain having guide rows composed of guide plates, and inner guide row plates, the guide row plates being connected, by connecting pins, in alternating, interleaved relationship with plates of non-guide rows, the diameters of the pin holes in the plates of each non-guide row vary with increasing distance from the guide plates. Optionally the diameters of the inner plates in the guide rows can also vary with increasing distance from the guide plates. | 07-23-2009 |
20090186731 | SILENT CHAIN - In a silent chain having guide rows composed of guide plates, and inner guide row plates, and connected, by connecting pins, in alternating, interleaved relationship with plates of non-guide rows, the pitches of the pin holes in the plates of each non-guide row vary with increasing distance from the guide plates. Optionally the pitches of the inner plates in the guide rows can also vary with increasing distance from the guide plates. The pin holes of the non-centrally located non-guide row plates, and optionally, the pin holes of the non-centrally located inner guide row plates, can also be slanted to conform to the surfaces of the connecting pins when the pins are flexed as a result of tensile force applied to the chain. | 07-23-2009 |
20090186730 | SILENT CHAIN - In a silent chain, the outer diameter of each connecting pin gradually increases from its ends toward a central region at an intermediate location between its ends, whereby the diameter of each pin is greatest in its central region. The pin holes of the inner plates can have the same inner diameter, which can be slightly larger than the largest outer diameter of the connecting pins. The gradual increase in the outer diameter of each pin is sufficiently small that, when a tensile load is applied to the chain, a connecting pin can be flexed by abutting inner surfaces of the pin holes of the chain's non-guide row plates, by an amount sufficient to make the abutment region of the pin substantially straight and in substantially uniform contact with the abutting inner surfaces of the pin holes. | 07-23-2009 |
20090186729 | SILENT CHAIN - In a silent chain, interleaved toothed link plates in guide rows and non-guide rows are articulably connected by connecting pins fixed to guide plates at the outer ends of the guide rows. In each guide row, the connecting pins are bent in such a way that the central portions of the connecting pins are closer to each other than the end portions when the chain is under moderate tension or no tension. As greater tension is applied to the chain, the bent connecting pins become substantially straight and are brought into substantially uniform contact with pin holes in the plates. | 07-23-2009 |
20090170648 | TIMING CHAIN DRIVE UNIT - In a timing chain drive unit the tooth pitch of a driven sprocket from which a tension span of the chain travels toward a driving sprocket varies cyclically around the circumference of the driven sprocket and cyclically increases and decreases the length of the tension span in synchronism with load variations imparted to the driven sprocket by a valve-operating camshaft. | 07-02-2009 |
20090156339 | CHAIN GUIDE FOR TRANSMISSION DEVICE - In an engine timing transmission, one end of a unitary molded glass fiber-reinforced resin chain guide is pivotally supported on a bolt fixed to an engine block. A supporting portion adjacent the opposite end of the chain guide is in abutting relationship with the engine block. An intermediate supporting portion on the chain guide is spaced from the engine block, but, when tension in the chain increases, the chain guide flexes, allowing the intermediate supporting portion to come into abutting relationship with the engine block. Through holes in the chain guide allow deformation of the supporting portions. | 06-18-2009 |
20090149288 | SILENT CHAIN - In a silent chain having interleaved guide rows and joint rows, guide plates at the outer sides of the guide rows are connected by engagement pins which extend through overlapping recesses formed on the outer flanks of the guide row plates, and on the inner flanks of the joint row plates. The engagement pins contact sprocket teeth before the outer flanks of the guide row plates contact the sprocket teeth. Cutouts formed in the guide plates adjacent the engagement pins allow the guide plates to deform and thereby absorb the impact imparted to the engagement pins by the sprocket teeth. | 06-11-2009 |
20090143177 | TIMING CHAIN DRIVE UNIT - In an engine timing chain drive, a pivoted chain guide is provided on the tension side of the chain, and a synchronizing sprocket is incorporated into the chain guide and driven by the chain. The synchronizing sprocket rotates a cam which effects reciprocating movement of the guide to compensate for cyclic variations in tension resulting from operation of intake and exhaust valves. | 06-04-2009 |
20090131209 | ROCKER JOINT PIN TYPE SILENT CHAIN - In a rocker joint silent chain, the link plates have two different engagement pitches, and the connecting pins are composed of combinations of rocker pins and joint pins, where each rocker pin has one of two thicknesses and each joint pin has one of two thicknesses, so that the rocker joint pins of the chain have three different thicknesses. The link plates and connecting pins are arranged randomly along the length of the chain. | 05-21-2009 |
20090111629 | TENSIONER LEVER FOR CHAIN DRIVE - In a spring-loaded tensioner lever having a coiled torsion spring accommodated in a space inside the lever, a stopper mechanism, comprising a pin held removably in a hole in the lever, holds an arm of the torsion spring against movement in the unwinding direction while the lever, or the chain, is being mounted on a mounting surface. The pin and a bent end of the arm of the spring fit into holes in the mounting surface positioned so that a pivot shaft-receiving hole of the lever is automatically aligned with a shaft-mounting hole in the mounting surface. | 04-30-2009 |
20090111626 | CHAIN TRANSMISSION FOR USE IN AN ENGINE - In a chain transmission, the guide-contacting portions of inner and outer plates of a chain each comprise a pair of front and rear flat surfaces, an intermediate concave oil-retaining surface and convex connecting surfaces. The lengths of the flat surfaces are such that adjacent flat surfaces of overlapping inner and outer plates overlap even when the plates in contact with the portion of a convex guide surface having the smallest radius of curvature. | 04-30-2009 |
20090105024 | CHAIN TRANSMISSION - A hybrid chain comprises outer links composed of link plates connected in side-by-side relationship by two connecting pins fitted to holes in the outer plates, and inner links composed of link plates in spaced, side-by-side relationship and connected by two bushings on which rollers are mounted, the bushings being fitted to holes in the inner plates. The inner and outer links are connected in alternating, overlapping, relationship, with each pin of an outer link extending through a bushing of an adjacent overlapping inner link. The chain meshes with a sprocket composed of a central sprocket engaged by the rollers, and two side sprockets. The inner link plates, the outer link plates, or both, have two teeth, with outer flanks in the form of arcs each centered on the more remote pin or bushing hole. The inner link plates, outer link plates, or both, can be double-sided link plates. | 04-23-2009 |
20090105023 | GUIDE FOR TRANSMISSION DEVICE - In an engine timing chain guide composed of a synthetic resin shoe supported on a frame by L-shaped and strip-shaped engagement members integrally molded as unitary parts of the shoe, the L-shaped members are formed with oblique tongues that resiliently engage side edges of the frame member, and the strip-shaped engagement members include surfaces that extend obliquely toward, and resiliently engage, a side edge of the frame member. Laterally extending legs of the L-shaped members are also formed with bulged portions, and the frame member is sandwiched between the bulged portions and a back side of the shoe. | 04-23-2009 |
20090075769 | CHAIN GUIDE FOR USE IN ENGINE - Longitudinal grooves having rectangular cross-sections are formed by surface pressing in the front and/or back surfaces of the metal base plate of a chain guide. In the case of a chain guide for a roller chain, the grooves can be positioned so that they are located opposite the parts of the shoe surface that is contacted by the link plates on both sides of the chain. | 03-19-2009 |
20090062160 | OILLESS CHAIN AND METHOD OF PRODUCING OILLESS CHAIN - An oilless chain is configured to connect alternately a pair of outer plates having two pins for coupling each other and a pair of inner plates, disposed adjacent to the pair of outer plates, having two bushings for coupling each other, by incorporating one of the pins into one of the bushings. After perfluoropolyether is impregnated into the bushings, the bushings are immersed in a lubricating oil composition prepared by blending perfluoropolyether with polytetrafluoroethylene. The polytetrafluoroethylene has a primary particle diameter adapted to the diameter of the pores of the bushings through which the lubricating oil composition flows. | 03-05-2009 |
20090062051 | Silent chain transmission device - In a silent chain, a link plate is formed by punching, followed by simultaneous shearing of the inner surfaces of the pin holes, the inner engagement surfaces of the teeth, the outer engagement surfaces of the teeth, the connecting arc continuous with the inner connecting surfaces, and the back of the link plate over at least 70% of the plate thickness. The plates are arranged at random to form a link, and engage a sprocket first by engagement of an inner engagement surface with a sprocket tooth, and thereafter seat on the sprocket with outer engagement surfaces of the link teeth in engagement with the sprocket teeth. | 03-05-2009 |
20090042683 | SILENT CHAIN - In a silent chain, link plates having two different back heights are arranged so that V-shaped oil guiding walls, opening in the direction of chain travel, are formed on the back of the chain that comes into sliding contact with the shoe of a chain guide. | 02-12-2009 |
20090036245 | DOUBLE-SIDED ENGAGEMENT TYPE SILENT CHAIN - In a double-sided engagement type silent chain in the form of an endless loop, the outermost link plates of the link rows whose outermost plates are not fixed to the chain's connecting pins, have teeth protruding toward the outside of the loon, and are paired in side-by-side relationship with adjacent inner link plates whose teeth protrude toward the inside of the loop. | 02-05-2009 |
20090036242 | CHAIN GUIDE FOR USE IN ENGINE - A chain guide is composed of a resin shoe engageable with an aluminum base frame. The shoe has a hook formed at a chain entry end for engagement with a chain entry end of the base frame, and a C-shaped hook at the chain exit end engageable with a side edge of the base frame. The shoe is engaged with the base by first engaging the C-shaped hook with the side edge of the base frame, then flexing the chain entry end of the shoe until the hook at the chain entry end can receive the chain entry end of the base. The shoe is moved a short distance toward the chain exit end of the base until a projection formed on a back surface of the shoe near the chain entry end snaps into a depression formed on a front surface of the base frame, locking the shoe and base together. | 02-05-2009 |
20090036241 | TENSIONER LEVER - In a pivoted tensioner lever extending upward from a pivot axis, both ends of boss through which a pivot shaft extends are provided with funnel-shaped grooves that guide oil adhering to the lever body into a region between the shaft and the inside of the boss. Oil guiding walls, continuous with the boss, and downwardly sloping reinforcing ribs with oil passages formed at their lower ends, increase flow of oil adhering to the lever body to the region between the shaft and the inside of the boss | 02-05-2009 |
20090017951 | TRANSMISSION CHAIN FOR USE IN ENGINE - The plates of transmission chain for an engine are formed with a guide-contacting configuration composed of spaced flat surfaces that come into sliding contact with a flat chain guide, and convex surfaces, continuous with and between the flat surfaces, for sliding contact with a convex chain guide. The convex surfaces are connected by a concave surface that, with the guide surface, forms an oil-retaining clearance. The radius of curvature of the convex curved surfaces of the plate preferably increases gradually from the location where they meet the flat surfaces toward the location where they meet the concave surface. The plates can have the same configuration on the side facing the inside of chain loop as on the side facing the outside of the chain loop. | 01-15-2009 |
20080318718 | DOWNWARD ANGLE SETTABLE HYDRAULIC TENSIONER - In a hydraulic chain tensioner having a housing, a hollow plunger slidable in a plunger-accommodating hole in the housing, and a hollow sleeve extending into the plunger from a bottom of the plunger-accommodating hole, and a check valve mounted at the opposite end of the sleeve, a passage is provided on the outer surface of the sleeve to accelerate the balance of pressure between a first high pressure chamber between the check valve and the protruding end of the plunger and a second high pressure chamber between the inner end of the plunger and the bottom of the plunger-accommodating hole. In an alternative embodiment, balance is accelerated by communication between the second high pressure chamber and an oil reservoir inside the sleeve on the upstream side of the check valve. | 12-25-2008 |
20080318717 | HYDRAULIC TENSIONER - A hydraulic tensioner comprises a plunger, and a plunger-accommodating hole in a tensioner housing, together forming a high pressure oil chamber. A plunger-biasing spring is provided in the high pressure oil chamber between the plunger and the bottom of the plunger-accommodating hole. An oil storage chamber is formed inside the plunger, and a check valve unit is press-fit in the rear end of the plunger to allow flow from the oil storage chamber to the high pressure oil chamber while blocking reverse flow of oil. | 12-25-2008 |
20080312019 | SILENT CHAIN TRANSMISSION DEVICE - In a silent chain transmission, a silent chain composed of uniform link plates meshes with a sprocket having two or three kinds of teeth randomly distributed around its circumference. The teeth have a common tooth gap bottom diameter, and a uniform angular spacing, but have different heights and different tooth forms. | 12-18-2008 |