Class / Patent application number | Description | Number of patent applications / Date published |
474212000 | Link including integral surfaces forming inwardly opening groove (e.g., silent chain, etc.) | 60 |
20080227575 | CHAIN - Disclosed is a chain which includes a plurality of link plates | 09-18-2008 |
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 |
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 |
20090048047 | Silent Chain and Manufacturing Method of the Same - In an inner link rank | 02-19-2009 |
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 |
20100004083 | TOOTHED CHAIN WITH OPTIMIZED CHAIN JOINT AND ENLARGED EXTERNAL FLANK ANGLE - The invention is related to a toothed chain with alternating inner and outer chain links each joined by means of a chain joint, wherein the inner chain links comprise at least one inner plate and at least two joint bushes running perpendicularly through the same, the outer chain links comprise at least two outer plates and at least two joint pins running perpendicularly through the same, and to form a chain joint, one joint pin of the outer chain link each extends through a joint bush of the inner chain link, and at least one inner plate of the inner chain link and/or at least one outer plate of the outer chain link is embodied as a toothed plate with each two teeth defined by an outer flank and an inner flank each. To provide a toothed chain having an improved service life and which can lead to a more advantageous embodiment of the complete chain drive, it is provided that an external flank angle given for the two external flanks of a toothed plate, is α≧65° and ≦75°, and a ratio V | 01-07-2010 |
20100190598 | CHAIN WITH TOOTH TYPE ROLLERS - A chain with tooth type rollers comprises a plurality of links that are levelly arranged and horizontally overlapped with each other, a plurality of pins for connecting the overlapped portions of the adjacent links and a plurality of tooth type rollers taking the respective pin as a center and positioned between the two parallel link plates of one of the links. Therein, each of the tooth type rollers is drivingly connected to the adjacent link plates. Each of the tooth type rollers has a combining portion synchronously rotating with the links and an outstanding portion protruded from the combining portion toward a chain wheel and inserted into one of tooth spaces of the chain wheel. By changing the structure of the rollers, the disclosed chain has the advantages of long service life, low operation noise and high driving efficiency. | 07-29-2010 |
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 |
20100311530 | HIGH STRENGTH AND STIFFNESS SILENT CHAIN WITH IMPROVED NOISE - An improved link for a chain for use with a sprocket, the link comprising a body having a pair of apertures for receiving connecting pins and a pair of teeth having outside flanks, and inside flanks between the teeth defining a crotch. The improvement includes an effective outer flank angle between a line tangent to the outer flank of the link at 1.5 P and a vertical line intersecting the tangent line of less than or equal to 29 degrees, an effective inner flank angle between a line tangent to the inner flank of the link at 0.5 P and a vertical line intersecting the tangent line of less than or equal to 29 degrees, and a plurality ratios. The links may be assembled into a chain and connected by a plurality of pins. | 12-09-2010 |
20110230290 | Toothed Chain with Optimized Tooth Plates - A toothed chain includes inner chain links and outer chain links alternatingly succeeding one another, the outer chain links comprising at least two outer plates, at least one middle plate and two pins. The inner chain links include at least two inner plates formed as tooth plates, the at least one middle plate being positioned between the inner plates. Each of the inner plates has a plate thickness d and a land width b, a ratio of plate thickness d to land width b being greater than 1.6. | 09-22-2011 |
20120165144 | CHAIN GUIDE PLATE - The invention relates to a chain guide plate, more particularly a chain guide side plate, having a contour profile ( | 06-28-2012 |
20130237357 | DUPLEX TOOTHED CHAIN AND ARRANGEMENT COMPRISING SUCH A TOOTHED CHAIN AND AN EXTERNAL TOOTHING OF A TOOTHED CHAIN ENGAGEMENT DEVICE - A duplex toothed chain includes a drive toothing that defines a drive toothing pitch circle, a driven toothing that defines a driven toothing pitch circle, toothed links, and joint links. The toothed links define joint apertures that are spaced at intervals from one another in a longitudinal direction and that are configured to receive the joint links. The joint apertures define a joint aperture pitch circle extending in the longitudinal extent of the duplex toothed chain. The driven toothing pitch circle is different from the joint aperture pitch circle and is arranged radially further distant from the joint aperture pitch circle than the drive toothing pitch circle is arranged radially distant from the joint aperture pitch circle. The differences in the toothing pitch circles increase the engagement efficiency. | 09-12-2013 |
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 |
20140113758 | MODULAR TRANSMISSION CHAIN BELT - The present invention provides a modular transmission chain belt for driving a transmission device, said transmission chain belt being driven by a sprocket having a plurality of tooth portions provided for driving said transmission chain belt, comprising a plurality of linkages and a plurality of connecting shafts. Each one of the linkages comprises a linkage body, a male connector and a female connector provided on two ends of said linkage body, a blind-perforation provided on a bottom surface of said linkage body. Each one of said linkages is attached to one another nearby with the male connector and the female connector thereof to form said transmission chain belt. Each one of the tooth portions is engaged into the blind-perforation of the linkage one by one to drive said transmission belt to rotate along a circulating path. | 04-24-2014 |
474213000 | Plural links having laterally aligned groove-forming surfaces | 46 |
20080268996 | SILENT CHAIN - In a silent chain, a flank surface which comes into contact with a sprocket tooth at the start of engagement has a partially protruding portion continuously formed along the longitudinal direction of the flank surface. Only the partially protruding portions of link plates that initially contact the sprocket teeth are positively caused to wear during running in of the chain, so that protruding portions of flank surfaces of other link plates that did not initially contact the sprocket teeth are brought into contact with the sprocket teeth. | 10-30-2008 |
20080300079 | Silent Chain - A silent chain ( | 12-04-2008 |
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 |
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 |
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 |
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 |
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 |
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 |
20090239697 | SILENT CHAIN - String vibration is reduced without causing friction loss. A silent chain is comprised of a multiple number of link plates, each of which has a pair of tooth portions and pin holes and which are laminated laterally and longitudinally and guide plates which are arranged at outermost positions of the link plates. The link plates and the guide plates are connected by connecting pins. In this construction, some of the guide plates are made heavier than that of other guide plates and are irregularly mixed in a longitudinal direction of the chain. Thus, the natural frequency can be changed in an arbitrary chain span and string vibration may be reduced without causing friction loss. | 09-24-2009 |
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 |
20100016110 | SILENT CHAIN - A silent chain that can reduce friction loss during travel of a chain. A silent chain | 01-21-2010 |
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 |
20100179008 | LINK PLATE FOR A SILENT CHAIN - The present invention provides a link plate for a silent chain that can introduce and maintain adequate lubricant in the pin aperture without decreasing the strength of the link plate. A silent chain ( | 07-15-2010 |
20100210387 | SILENT CHAIN - String vibration is reduced without causing friction loss. A silent chain is comprised of a multiple number of link plates, each of which has a pair of tooth portions and pin holes and which are laminated laterally and longitudinally and guide plates which are arranged at outermost positions of the link plates. The link plates and the guide plates are connected by connecting pins. In this construction, some of the guide plates are made heavier than that of other guide plates and are irregularly mixed in a longitudinal direction of the chain. Thus, the natural frequency can be changed in an arbitrary chain span and string vibration may be reduced without causing friction loss. | 08-19-2010 |
20100216582 | SILENT CHAIN - String vibration is reduced without causing friction loss. A silent chain is comprised of a multiple number of link plates, each of which has a pair of tooth portions and pin holes and which are laminated laterally and longitudinally and guide plates which are arranged at outermost positions of the link plates. The link plates and the guide plates are connected by connecting pins. In this construction, some of the guide plates are made heavier than that of other guide plates and are irregularly mixed in a longitudinal direction of the chain. Thus, the natural frequency can be changed in an arbitrary chain span and string vibration may be reduced without causing friction loss. | 08-26-2010 |
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 |
20100304911 | VIBRATION-PROOF SILENT CHAIN - In a silent chain, the toothed link plates are configured so that their centers of gravity are aligned with the line of action of chain tension in a free span of the chain, when the free span is straight and under tension. The positions of the centers of gravity are aligned with the centers of the pin holes in the case of a chain incorporating round connecting pins and are aligned with the points of contact of the rocker pins and joint pins in the case of a chain having rocker joint connecting pins. Positioning of the centers of gravity can be effected by thickening the backs of the link plates or by providing weight-reducing holes in the vicinity of the teeth of the link plates. | 12-02-2010 |
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 |
20110224041 | SILENT CHAIN - A silent chain | 09-15-2011 |
20110287883 | Non-Circular Joint Openings in Toothed Plates of Silent Chains - A round-pin-joint toothed chain is provided that comprises alternating outer and inner chain links which are pivotably interconnected via a chain joint including round pins that are circular in cross-section, the outer chain links comprising two parallel, spaced-apart outer plates and at least one centered toothed extension plate disposed between the outer plates, and the inner chain links comprising at least two inner toothed plates, said at least two inner toothed plates and said at least one toothed extension plate having each two joint openings, which are arranged in spaced relationship with one another on the longitudinal axis of the inner toothed plate and of the toothed extension plate, respectively, and which are associated with the end faces of the inner toothed plates and of the toothed extension plate, respectively, and a respective round pin extending through one of the joint openings. | 11-24-2011 |
20120035012 | CHAIN - To provide a chain which makes it possible to reduce friction loss during operation. [Means of Resolution] An endless silent chain | 02-09-2012 |
20120065013 | Chain - There is provided a chain comprising guide link rows and non-guide link rows disposed alternately along the length of the chain with each plate of each row overlapping each plate of each of two adjacent rows. For each guide link row, a pair of pins is provided for connecting the guide link rows and non-guide link rows in articulating relationship. The first connecting pin extends into a first hole of each of the guide plates of its guide link row and into and through the second hole of each link plate of an adjacent non-guide link row. The second connecting pin extends into a second hole of each of the guide plates extends into and through a first hole of each link plate of an adjacent non-guide link row. The connecting pins fit tightly into each first hole into which it extends and fits loosely in each second hole into which it extends. | 03-15-2012 |
20120157252 | SILENT CHAIN - To provide a silent chain which makes it possible to further reduce friction loss during operation and to enhance operating efficiency, while also making it possible to reliably prevent assembly errors. A silent chain | 06-21-2012 |
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 |
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 |
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 |
20150292598 | DRIVE CHAIN - Exemplary arrangements for drive chains are disclosed. In one exemplary arrangement, a tooth shaped link member for a drive chain comprises a web portion, a first side tooth, a second side tooth and a central guide tooth. The web portion extends between opposing side portions of the link member. The first side tooth and the second side tooth each include an apex that is oriented at an angle to extend toward the central guide tooth. In another exemplary arrangement, a drive chain comprises a plurality of inner links that are operatively connected to a plurality of outer links, where a pair of rollers are mounted between the inner links with a pin being positioned between the rollers. | 10-15-2015 |
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 |
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 |
20160097437 | LINK FOR INVERTED TOOTH CHAIN WITH OPTIMIZED SHAPE FOR INCREASED STRENGTH - An inverted tooth chain assembly configured to mesh with a sprocket is provided including a link with an improved shape for increased strength. The link includes two teeth, a pair of outer flanks, first and second inner flanks, and a crotch located between the first and second inner flanks. A first transition point is arranged between the first inner flank and a first end region of the crotch, and a second transition point is arranged between the second inner flank and a second end region of the crotch. A crotch surface is defined between the first transition point and the second transition point and has a profile with a varying radius of curvature. The profile of the crotch surface has a smaller radius of curvature at the first and second end regions and a larger radius of curvature at a medial region between the first and second end regions. | 04-07-2016 |
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 |
20160195166 | CHAIN WITH ALTERNATING INSIDE LINK POSITION TO ENABLE NARROW LACING WITH IMPROVED NVH BEHAVIOR | 07-07-2016 |
474214000 | Connector or bearing member extending through or positioned in laterally aligned openings in adjacent links is noncircular in transverse cross section | 14 |
20110177899 | HYBRID BUSHED-SILENT CHAIN - A chain is disclosed having pins, each having a first end and a second end, and first and second outer plates press-fitted around the first and second ends of each of the pins, respectively. Each of the first and second outer plates has two pin holes through which the first and second ends of respective ones of the pins extend, respectively. First and second inner link assemblies, each consisting of at least one toothed inner plate, are disposed between the first and second outer plates. The at least one toothed inner plate has two openings each having a respective bushing press-fitted therein and arranged around respective ones of the pins with a slip-fit. Toothed middle plates, each having two pin holes press-fitted around respective ones of the pins, are disposed between the first and second inner link assemblies. | 07-21-2011 |
20110269590 | TOOTHED CHAIN, IN PARTICULAR FOR A VEHICLE DRIVE - A toothed chain, which has a multiplicity of toothed links and cover links articulatedly connected to one another by cradle pieces. The cradle pieces are arranged in cradle piece openings of the toothed links and cover links. The cover links form guide links situated at the outside at both sides of a longitudinal direction and hold the toothed links between them. The cover links are formed with link yokes, which have a respective opening for the cradle pieces, and with an upper and lower link web which connect the link yokes. An opening is formed in the region between the upper and lower link webs, which has, in plan view, a substantially trapezoidal shape with sides of substantially equal lengths and an upper side and lower side of different lengths. The upper side is assigned to the upper link web and the lower side to the lower link web. | 11-03-2011 |
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 |
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 |
20140141914 | SILENT CHAIN AND SILENT CHAIN TRANSMISSION - A back face of each inner link plate of the chain is curved convexly. Heights from a pitch line connecting centers of pin holes of inner and guide link plates to the convex apex portion of the inner link plate and to an apex portion of the guide link plate are equalized. The convex apex portions are brought into contact with a guide face of the chain guide per every pitch and the ear apex portions are brought into contact with the chain guide per every pitch while being shifted by a half pitch from the convex apex portions. | 05-22-2014 |
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 |
474215000 | Multiple connector or bearing members extend through or positioned in common opening | 8 |
20080312020 | Plate-link chain - A toothed plate-link chain that is employable in a vehicle drive train or other drive systems, in which rocker joints formed of link plates and rocker members are designed so that in spite of a requisite free play in the joint, protection against twisting of the rocked members is improved while at the same time noise is reduced. Additionally, no particular orientation of the rocker members relative to link plate openings is needed when assembling the rocker joint. The contours of each rocker member are formed mirror-symmetrically both to the X-axis and to the Y-axis. | 12-18-2008 |
20090082149 | Plate-link chain - A plate-link chain composed of a large number of plates that form plate sets, where adjacent plate sets are hingedly connected to each other by pairs of rocker members. The rocker members of a rocker member pair have rolling surfaces that bear against each other. Some plate sets, preferably every second one, have a cover plate on their outwardly-facing sides, and the two rocker members associated with the plate set provided with the cover plates are received in receiving openings of the cover plates, and are pressed into them. At least one of the openings has relief cuts on both ends of a contact surface contacted by the rolling surface of the received rocker member, with the cover plate opening having a third relief cut. | 03-26-2009 |
20090118048 | Hoisting and lowering driving engagement multi-row chain - A hoisting and lowering driving engagement multi-row chain is disclosed, in which bending of the connecting pins in the chain is suppressed to avoid fatigue failure. Additionally, the load carrying balance in the chain width direction is improved, and contact vibrations and contact noises generated between the chain and the hoisting and lowering sprockets are suppressed. Endurance of the bush in the chain is thereby improved. Bending of connecting pins is avoided by press-fitting bushes, through which connecting pins pass, into intermediate tooth plates. This also improves load carrying balance widthwise. Contact noises and vibrations between the bushes and sprockets are suppressed by providing bushes with a separate sprocket engagement portion having a larger diameter than the press-fitting portion of the bushes. | 05-07-2009 |
20090192000 | Toothed plate-link chain - A toothed plate-link chain having a plurality of link plates that form chain links in the transverse direction of the chain. The link plates of laterally adjacent chain links partially overlap, and the chain links are hingedly connected to each other by hinge pins that extend through receiving openings in overlap regions of the link plates. At least some of the link plates have plate teeth, and some of the link plates have a modified form to reduce the effect of impact impulses of the link plates on the tooth flanks of a toothed wheel about which the chain passes. As a result, the magnitude of the meshing impulses and the times during which they act on the toothed wheel are modified to thereby reduce structure-borne noise. | 07-30-2009 |
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 |
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 |
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 |
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 |