Entries |
Document | Title | Date |
20080214341 | Belt Drive - A belt drive is provided which includes a circulating belt ( | 09-04-2008 |
20080242460 | GUIDE OR TENSIONING RAIL IN A TRACTION MECHANISM DRIVE - A guide or tensioning rail in a traction mechanism drive is provided, wherein the guide or tensioning rail has a mounting eye with a sleeve. To simplify the assembly of the rail during assembly of the traction mechanism drive, the sleeve can be locked in the mounting eye. | 10-02-2008 |
20080254926 | Traction Mechanism Drive - The invention relates to a traction mechanism drive, in particular a control drive of an internal combustion engine, comprising an endless traction mechanism which connects a drive wheel and at least one driven wheel in a form-fitting manner and on the circumference of which at least one pressure medium-actuated tensioning device and a guide rail ( | 10-16-2008 |
20080268993 | Chain tensioner - A chain tensioner includes a housing defining a cylinder chamber having a closed end. A cylindrical plunger having a closed front end is slidably received in the cylinder chamber. A nut member and a return spring are mounted in the cylinder chamber. The return spring biases the plunger outwardly of the housing to press its closed end against a pivotally supported chain guide. The nut member has a serration-shaped internal thread formed on the inner periphery thereof which is in threaded engagement with a serration-shaped external thread formed on the outer periphery of the screw rod. The screw rod is biased toward the closed end of the plunger by a rod spring. A damper is mounted between the front end of the screw rod and the closed front end of the plunger for damping, in cooperation with the return spring, a pushing force applied to the plunger, and for allowing the screw rod and the plunger to move relative to each other in a direction in which the distance between respective remote ends thereof decreases by an amount not less than an axial play present between the internal and external threads. | 10-30-2008 |
20080305903 | ECCENTRIC TENSIONING DEVICE - An eccentric tensioning device is provided for tensioning a power-transmission means constructed, for example, as a flat belt or toothed belt in a power-transmission means drive. The tensioning device can be brought into a pretensioned mounting state in an advantageous way. The eccentric tensioning device has a free roller device that includes a running disk and a roller bearing provided for supporting this disk, a working eccentric for supporting the free roller device, that can be displaced in the radial direction relative to the rotating axis of the roller bearing according to the magnitude of the pivoting of the working eccentric, a bearing journal device for supporting the working eccentric, a torsion spring for pretensioning the working eccentric, a fixing device for securing the working eccentric in a mounting position, in which the torsion spring is located in a pretensioned state, and an adjustment for supporting the bearing journal device. The adjustment eccentric has a rim encompassing the bearing journal device on an end facing away from a flange side and a passage device, through which an end region of the bearing journal device is accessible, is constructed in the region of this rim. In this way, it becomes possible in an advantageous way to create a tensioning device, in which the bearing journal device can be loaded on the end with an axial force used for the axial displacement of the working eccentric relative to the guide journal. It thus becomes possible to bring a tensioning device detached by unlocking the fixing device in an advantageous way into a pretensioned mounting state and in this way to reconfigure it into a mounting-ready state. | 12-11-2008 |
20090011879 | BRACKET FOR CHAIN TENSIONER OR CHAIN GUIDE - To reduce the bending stress acting on a bracket in a chain tensioner or chain guide when a chain is traveling, a bracket of a chain tensioner is provided with a laterally symmetrical transverse-sectional shape by bending one thin sheet of sheet metal having a thickness of preferably no more than 1 mm. The transverse-sectional shape is configured by a shoe mounting part and an upright wall part which projects to the back surface thereof, the structure of each of these comprising two layers of sheet metal, and the two sheets of sheet metal are fixedly attached by spot welding or the like, for example, at the upright wall part. The transverse-sectional shape includes substantially an “I” shape, “T” shape or triangular shape. | 01-08-2009 |
20090011880 | Auto-tensioner - An auto-tensioner includes a plunger slidably inserted in a cylinder and having a closed front end protruding from the cylinder and an open rear end which is located in the cylinder. The plunger is formed with an internal thread on its inner periphery. A screw rod having an external thread formed on its outer periphery thereof and inserted in the plunger with its external thread in threaded engagement with the internal thread of the plunger. The screw rod has a rear end protruding from the open rear end of the plunger. A seat member is mounted in the cylinder and in abutment with the rear end of the screw rod. A return spring having one end thereof supported by the screw rod biases the plunger outwardly of the cylinder to press the closed front end of the plunger against a chain or a belt. An elastic member which is compressible in the axial direction of the cylinder supports the seat member. | 01-08-2009 |
20090017949 | Chain tensioner - A chain tensioner includes a plunger axially slidably inserted in the cylinder for pressing a chain. The plunger defines in the cylinder a pressure chamber filled with hydraulic oil. The volume of the pressure chamber is variable with the axial movement of the plunger. The pressure chamber communicates with the outside of the cylinder through a restricted passage defined between sliding surfaces of the plunger and the cylinder. A spring biases the plunger in a direction to increase the volume of the pressure chamber. The cylinder is formed with an oil supply passage through which the pressure chamber communicates with the outside of the cylinder. The chain tensioner further includes a check valve which allows only a flow of hydraulic oil through the oil supply passage from the outside of the cylinder to the pressure chamber. The check valve includes an annular valve seat, a check ball which is movable into and out of contact with the valve seat, and a retainer formed by drawing and retaining the check ball. The retainer includes a tubular portion and a bottom at one end of the tubular portion. The tubular portion of the retainer is formed with an opening through which hydraulic oil can flow into and out of the retainer. The opening extends to a border between the tubular portion and the bottom of the retainer and is formed by punching the tubular portion from inside to outside thereof. | 01-15-2009 |
20090029814 | CLAMPING OR GUIDING RAIL FOR A TRACTION MECHANISM, ESPECIALLY A CHAIN DRIVE - A tensioning or guiding rail for a traction mechanism, especially a chain drive, is provided, and includes a carrier body and a slide path lining arranged on the carrier body. The carrier body ( | 01-29-2009 |
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 |
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 |
20090036243 | BLADE TENSIONER WITH OPPOSING SPANS - A tensioner for tensioning a strand of chain between two sprockets including a tensioner body and a ramp fixed to ground. The tensioner body has an oval shape defined by first and second arcuately curved sides. Each side has a distal end, a proximal end, and a blade spring. The first and second arcuately curved sides are coupled together at the distal ends and pivotally attached to ground at the proximal ends. When the first arcuately curved side is in contact with the ramp, the second arcuately curved side is in contact with the chain strand, and the tensioner body is positioned relative to the ramp such that the blade springs of the tensioner body are compressed, a tensioning force is applied to the strand of chain. | 02-05-2009 |
20090054184 | Transmission Device of Walking Type Self-Traveling Lawn Mower - A transmission device ( | 02-26-2009 |
20090062047 | Belt installation guides - A belt installation guide is disclosed which accommodates the loading in a belt module of a new belt around drive rollers. The guide is placed opposite the end portions of the rollers, the belt is slipped over the guides and held by the guides until the belt is pushed over the rollers. The guides can be attached to the belt module or can be detachable therefrom. Once in place over the rollers, a tension is exerted on the belt to make it taut over all of the rollers. The guide is removed from near the rollers after the belt is in place over the rollers. | 03-05-2009 |
20090069133 | SELF-ENERGIZING BRAKE FOR A TENSIONER - A tensioner that includes a blade shoe ( | 03-12-2009 |
20090098965 | TRACTION MECHANISM DRIVE FOR MACHINE PARTS AND DRIVE ASSEMBLIES - The invention relates to a traction mechanism drive ( | 04-16-2009 |
20090105022 | Shoe Tensioner for a Synchronous Belt Drive for Use With Oil - A shoe tensioner for a synchronous belt drive, having a guide member adapted to cooperate with a drive belt and hinged at one end about a first axis; elastic means cooperating with the guide member to tension the belt; and connecting means for connecting the tensioner to a supporting wall. More specifically, the elastic means include a coil spring. | 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 |
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 |
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 |
20090163311 | SERIES SPRING BLADE TENSIONER - A blade tensioner includes a blade shoe assembly with parallel stacked flat springs that pivots at one end and is supported in series by a spring loaded ramp at the opposite end. Providing a spring loaded ramp in series reduces the overall stiffness of the tensioner which enables a more uniform tensioning load as the tensioner takes up chain slack due to elongation from wear. | 06-25-2009 |
20090215562 | ASSEMBLY MEANS FOR A TENSIONING SYSTEM - The invention relates to a traction mechanism drive ( | 08-27-2009 |
20090239692 | TENSIONING RAIL WITH A CHANNEL DEVICE IN THE PRESSURE BODY - The present invention relates to a tensioning rail for a chain drive, in particular a timing chain drive of an internal combustion engine, comprising a base body ( | 09-24-2009 |
20090258737 | CHAIN TENSIONER DEVICE - A chain tensioner device having a first slide surface of a main arm pivotably supported at an upper end thereof, and a second slide surface of a sub-arm pivotably supported at a lower end thereof. The first and second slide surfaces slidably abut against each other. When the main arm is biased toward a timing chain via the sub-arm by a biasing force of a plunger of a tensioner lifter, a stroke of the main arm is increased with respect to a stroke of the plunger. | 10-15-2009 |
20090264232 | TENSIONER ASSEMBLY COMPRISING A DISPLACEABLE TENSIONING RAIL - The invention relates to a tensioner assembly for a traction medium drive, specifically a chain drive, with at least two traction medium wheels and a flexible traction medium, comprising a tensioning rail which can be pressed against the traction medium by means of a tensioning device, wherein the tensioning rail is applied against at least one sliding guide and can be displaced along the at least one sliding guide by means of the tensioning device. | 10-22-2009 |
20090275430 | FORCE LIMITING TENSIONING ARM - A tensioner for a chain driven power transmission system of an internal combustion engine, having a ratchet as part of the tensioning system is disclosed. The tensioner contains at least one bracket that is pivotally mounted to the engine adjacent one strand of the chain. The bracket contains a chain guide element that maintains forceful slideable engagement with the chain. Between the chain guide element and the bracket are an elongated support member having a pre-loaded spring force and an elongated resilient pad. The resilient pad quickly compresses in response to spikes or surges in chain tension absorbing the force of the spike. | 11-05-2009 |
20090275431 | RATCHET MECHANISM FOR A CHAIN DRIVE - A ratcheting tensioning device for a closed loop chain driven power transmission system of an internal combustion engine consisting of a base tensioner arm ( | 11-05-2009 |
20090325750 | TENSIONER WITH TWO WAY DAMPER - A tensioner for a power transmission system includes two tensioning arms operatively engaged with the strand of the chain or the belt of the power transmission system. The upper end of each tensioning arm is connected to a two way damper which is pivotally mounted between the upper ends of the tensioning arms. When a pre-determined chain tension overload threshold is reached, the amount of torque required to overcome the coefficient of friction the damper allows the tensioner to adjust the tension in the chain with minimal oscillations and minimal phase change variation. | 12-31-2009 |
20100022337 | Variable Leakdown Chain Drive Tensioner - A variable leakdown chain drive tensioner system includes a chain drive tensioner in operable communication with a chain. The chain drive tensioner includes a tensioner body with at least one leakage hole defining a first leakdown path and a tensioner piston assembly in operable engagement with the tensioner body. As the chain wears, the tensioner piston assembly is moveable from a first position, allowing flow through the first leakdown path, to at least a second position, substantially blocking flow through the first leakdown path. The tensioner body may also include a second leakage hole defining a second leakdown path and the tensioner piston may also have a third position. The first position would allow flow through the first and second leakdown paths, the second position would allow flow through only the second leakdown path, and the third position would substantially block flow through both the first and second leakdown paths. | 01-28-2010 |
20100022338 | PIVOT TYPE TENSIONER FOR TIMING CHAIN SYSTEMS - The tensioning device has a base element and a tension shoe which are connected using fork arms to the pivot axle. Retention surfaces on the base element and the tension shoe and a locking rib and locking channel provide a locking mechanism between the base element and tension shoe. | 01-28-2010 |
20100022339 | SLIDING RACK RATCHET TENSIONER - The high-performance sliding rack ratchet tensioner is inexpensively manufactured. A rack having rack teeth is slidingly received in a rack slot on the side of the piston. The rack slot is preferably open-ended on the end facing the tensioner arm. The rack and piston are both received in a piston bore in the tensioner body. The rack length is preferably shorter than the rack slot length to provide backlash. A pawl mounted in a pawl bore perpendicular to the rack bore engages the rack. The open-ended rack slot allows the rack to be inserted after the piston during assembly. The rack and pawl preferably have shark fin-shaped teeth. The pawl preferably has dummy teeth to ensure that the load is shared by the center teeth. | 01-28-2010 |
20100029425 | TENSIONER - A tensioner includes a base, a piston, a rack, a stopping device, a first and a second flexible device. The surface of the base includes a first, a second, a third, and a fourth recess portion vertically connecting the third with the S second recess portion. The rack disposed in the second recess portion has one ending outside the base to extend and connect to one ending of the piston. The stopping device axially disposed in the fourth recess portion has a work surface and a first connecting surface disposed on sides of two endings thereof. Two sticking portions are disposed on opposite edges of the first connecting surface. A turning mechanism is disposed on the ending of stopping device, which has the sticking portions. The second flexible device disposed in the third recess portion contacts the ending of stopping device, where the work surface is disposed. | 02-04-2010 |
20100062887 | TENSIONING RAIL OR GUIDE WITH SECURING MEANS FOR RETAINING BOLTS - The present invention relates to a tensioning rail or a guide rail for tensioning and/or guiding a drive chain, comprising an opening for receiving a retaining bolt and a retaining bolt which can be inserted into the opening, wherein a lock device working between the retaining bolt and the opening is provided with a lock projection at the opening and a lock recess at the retaining bolt or vice versa, which lock device secures the retaining bolt in a mounting position relative to the opening and at least temporarily releases the retaining bolt in order to move it to a fixing position. | 03-11-2010 |
20100203991 | CHAIN GUIDING ELEMENT FOR A TIMING CHAIN, TIMING CHAIN DRIVE, AND VEHICLE ENGINE - A chain guiding element ( | 08-12-2010 |
20100210384 | BLADE TENSIONER WITH CAPTURED SPRING - A chain tensioner assembly includes a bracket with a main wall and a ramp surface. A blade assembly is connected to the bracket and includes a blade located adjacent the main wall of the bracket. The blade includes: (i) a first blade end with a pivot aperture; (ii) a second blade end contacting the ramp surface; and, (iii) a central blade portion that extends between the first and second blade ends. The central blade portion includes a chain engaging surface. A first spring-retaining slot is located in the first blade end and includes inner and outer open sides that open respectively through inner and outer faces of the blade. A second spring-retaining slot is located in the second blade end. A spring includes a first end located in the first spring-retaining slot, a second end located in the second spring-retaining slot; and, a central portion that abuts the central blade portion. A pivot fastener extends through the pivot aperture and obstructs the outer open side of the first spring-retaining slot such that the pivot fastener captures the first end of the spring in the first spring-retaining slot. | 08-19-2010 |
20100248876 | MOUNTING UNIT OF A TRACTION ENGINE DRIVE - A traction engine drive ( | 09-30-2010 |
20100273590 | TIMING CHAIN PIVOTING GUIDE HAVING A RUBBER SPRING ELEMENT - The rubber element is positioned in the drive end of the chain guide and provides dampening and noise reduction for the guide, thereby reducing the overall noise from the meshing of the chain and the guide. | 10-28-2010 |
20100292037 | GUIDE OR TENSIONING RAIL IN A TRACTION DRIVE - A guide or tensioning rail ( | 11-18-2010 |
20110039647 | TRACTION MECHANISM DRIVE - A traction mechanism drive ( | 02-17-2011 |
20110053719 | BELT DRIVE - A belt drive is provided which includes a circulating belt ( | 03-03-2011 |
20110065538 | CHAIN TENSIONER FOR INTERNAL COMBUSTION ENGINE - A chain tensioner includes a base frame secured to each of front and rear banks, a slider plate shiftable in the extending direction of the base frame, and a tensioner provided to straddle between the base frame and the slider plate. The slider plate is biased to elastically deform and arcuately bend the tensioner, which applies a tensile force to each of cam chains transmitting the rotation of a crankshaft. In the chain tensioner, upper securing portions are provided in an upper portion of the base frame so as to be secured to each of the front and rear banks in the bending direction of the tensioner. A lower end of the base frame extends to a position facing the inside of the crankcase to provide a lower securing portion which is secured to each of the front and rear banks perpendicularly to the bending direction of the tensioner. | 03-17-2011 |
20110077114 | ANCHORED MECHANICAL STRAP TENSIONER FOR MULTI-STRAND TENSIONING - A tensioner for a closed loop power transmission system for an internal combustion engine having a drive shaft terminating in a sprocket and at least one camshaft, each terminating in a sprocket, with a single continuous chain wrapping around all of the sprockets. The tensioner contains a pair of elongated tensioning arms, each one in slidable contact with one of the two strands of chain that traverses between the driving sprocket and the driven sprocket(s). Each tensioning arm contains a wear face that remains in constant slidable contact with the strand of chain to which it is adjacent. An adjusting arm connects one of the ends of the tensioning arms. The adjusting arm has a ratchet means that adjusts for the backlash in the system and takes up any slack in the chain. | 03-31-2011 |
20110105257 | MECHANICAL TENSIONER WITH DAMPING FEATURE - A mechanical tensioner for a traction drive element is provided. It includes a housing with a bore having an open end and a closed bottom. A plunger having a first end is located in the bore. The first end of the plunger has a tapered slot or tapered opening defined therein forming a hollow wall portion of the plunger. The hollow wall portion is discontinuous in a circumferential direction. A wedge insert is located at least partially in the slot or opening. The wedge insert has an outer surface with a contact area that is complementary to the tapered slot or tapered opening. A spring is located between the wedge insert and closed bottom of the housing. The spring forces the wedge insert into the tapered slot or tapered opening with an increase in force as the plunger is depressed into the bore in the housing. This forces the hollow wall portion outwardly in order to provide a friction damping feature that increases with the distance that the plunger is depressed. | 05-05-2011 |
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 |
20110105259 | GUIDE RAIL OR TENSIONING RAIL WITH A SLEEVE, AND TRACTION MECHANISM DRIVE THEREWITH - A guide member, such as a guide rail or a tensioning rail, of a traction mechanism drive, for use on an internal combustion engine. The rail-like guide member, which is preferably manufactured from plastic, has at least one through opening into which a preferably metallic sleeve is inserted and which sleeve has a first end which, projecting out of the through opening, is arranged such that it can be brought into contact with an engine part. The first end of the sleeve has a larger circumference than a second end of the sleeve, which is opposite the first end. | 05-05-2011 |
20110111899 | CLIP-TYPE TENSIONER - A clip-type tensioner member having a piston in a housing and a ratchet mechanism. A plurality of rack teeth are formed on the outer periphery of the piston. A clip member elastically engages with the rack teeth and is positioned in a recess in the housing. The recess has an annular member with a hardened oblique face. | 05-12-2011 |
20110136605 | DUAL PLUNGER LINEAR CHAIN TENSIONER FOR TENSIONING MULTIPLE CHAIN SPANS - A chain tensioner is provided with a base housing, a first plunger, and a second plunger. The base housing surrounds a portion of at least one of the first or second plungers. A first spring is disposed between the first and second plungers, and a second spring is disposed between the first plunger and the base housing. The chain tensioner can tension two chain spans simultaneously with different stiffness parameters based on the two springs. | 06-09-2011 |
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 |
20110201465 | TENSIONING DEVICE - ISSUE: A chain tensioning device with a short center distance that can impart a tensioning force to a plurality of chain spans at the same time with a simple structure. MEANS OF RESOLUTION: A tensioning device ( | 08-18-2011 |
20110237371 | Chain tensioning device - This invention describes a compact, light weight, durable, quiet in operation, economical, chain tensioning device with means for controlling chain slack between two drive sprockets, found in all terrain vehicles or the like. The assembly comprises a chain tensioning device which is spaced between the two drive sprockets. The chain tensioning device is easy to assemble, install and adjust. The device exerts a modest pre-load tension pressure, require infrequent adjustment and is suitable for reversed loads. | 09-29-2011 |
20110237372 | TENSIONER - A tensioner has a cylindrical member having multiple locking teeth, one or multiple locking pieces having locking teeth to be engaged with the locking teeth, and a locking piece receiving part to receive the aforementioned locking pieces. A shaft member is disposed inside the cylindrical member, and either the cylindrical member or the shaft member constitutes a thrust member that can be driven forward and backward by a biasing force. A ratchet mechanism allows the thrust member to move forward by the locking pieces riding over the locking teeth of the cylindrical member as they move in a reduced-diameter direction and constrains retraction of the thrust member by the locking pieces engaging with the locking teeth of the cylindrical member as they move in an increased-diameter direction. The locking teeth are all thread-like teeth having a lead angle. | 09-29-2011 |
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 |
20110294613 | TENSIONING RAIL FOR POWER TRANSMISSION DRIVES ON INTERNAL COMBUSTION ENGINES - A tensioning device for compensating for elongations of the traction mechanism, in particular a chain or a timing belt, of a power transmission drive, in particular on an internal combustion engine, having a tensioning mechanism, in particular a tensioning rail, a sliding shoe or tensioning arm having a tensioning roller. A tensioning element is disposed between a support surface on the tensioning mechanism and a support, in particular on the internal combustion engine, and the support surface on the tensioning mechanism is made of a material which has a high strength. | 12-01-2011 |
20110306449 | AUTOMOTIVE TIMING CHAIN SYSTEM COMPONENT AND METHOD THEREOF - One embodiment may include an automotive timing chain system component ( | 12-15-2011 |
20120035010 | Blade Tensioner with Spring Retaining Features - A chain tensioner blade assembly shoe includes a first spring-receiving slot and a second spring-receiving slot. The first spring-receiving slot includes: (i) a first lower wall; (ii) a first outer wall; (iii) a first locking tab located adjacent the rear face of the shoe. The second spring-receiving slot includes: (i) a second lower wall; (ii) a second outer wall; (iii) a second locking tab located adjacent the rear face of the shoe. The first and second locking tabs extend only partially toward and are spaced from the inner surface of the shoe central portion. A spring is located in a spring-receiving region and includes a first end located in the first spring-receiving slot between the first outer wall and the first locking tab, a second end located in the second spring-receiving slot between the second outer wall and the second locking tab, and a central portion in contact with the inner surface of the shoe central portion. The first and second locking tabs maintain a stand-off distance between the spring and a bracket on which the shoe is mounted. | 02-09-2012 |
20120094792 | TORQUE BIASED FRICTION HINGE FOR A TENSIONER - A pivot joint for a single blade spring tensioner or double blade spring tensioner generates a biased friction loss at a pivot joint. The friction torque generated in one direction of joint rotation is greater than the friction torque generated in the opposite direction of rotation. In one embodiment, the direction of torque bias at the joints is used to make the damping of the blade spring greater in compression than in extension. High damping in compression and low damping in extension is a desirable characteristic for a tensioner in most applications. The device may be designed to act as a one-way clutch or as a two-way clutch. The device may also be designed to apply large friction torques only when the joint undergoes large amplitude motions (loss of control). | 04-19-2012 |
20120129636 | FRICTION REDUCING DEVICE OF TIMING CHAIN FOR VEHICLE - Friction reducing units are integrally configured in a tensioner arm and a chain guide that are disposed at both sides of a timing chain to make contact with the timing chain, respectively to increase the thickness of the oil film, such that it is possible to improve durability of an entire timing chain system while preventing noise from being generated by reducing a friction loss generated on each of contact surfaces of the tensioner arm and the chain guide and prevent fuel efficiency of the vehicle from being deteriorated. | 05-24-2012 |
20120135832 | CHAIN TENSIONER DEVICE - A chain tensioner device having a first slide surface of a main arm pivotably supported at an upper end thereof, and a second slide surface of a sub-arm pivotably supported at a lower end thereof. The first and second slide surfaces slidably abut against each other. When the main arm is biased toward a timing chain via the sub-arm by a biasing force of a plunger of a tensioner lifter, a stroke of the main arm is increased with respect to a stroke of the plunger. | 05-31-2012 |
20120225744 | MULTI-STRAND TENSIONING ARRANGEMENT WITH MOVING ARMS - An apparatus ( | 09-06-2012 |
20130023367 | TENSIONING ARRANGEMENT HAVING A SWINGING ARM - An apparatus ( | 01-24-2013 |
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 |
20130059686 | TENSIONING MECHANISM FOR A CONTINUOUS BELT OR CHAIN DRIVE SYSTEM - An apparatus ( | 03-07-2013 |
20130059687 | MECHANICAL TENSIONER WITH ONE WAY DAMPING - An apparatus for imparting tension to multiple strands of an endless loop power transferring member encircling a drive sprocket and at least one driven sprocket. A tensioner mechanism includes a slider assembly having a fixed body defining a slot, a slider body engaged within the slot for movement between opposite ends of the slot, and a spring urges the slider body toward one end of the slot. The slider body is operably engageable with at least one tensioning arm for driving the at least one tensioning arm to tension the power transferring member. A link assembly can include two link members pivotally connected to the slider body at first ends and individually connected at second ends to two tensioning arms. | 03-07-2013 |
20130095965 | CHAIN TENSION GUIDE SUITABLE FOR AN INTERNAL COMBUSTION ENGINE - A chain tension comprising a guide body wherein the guide body comprises a layer made of a non-thermoplastic polyimide on at least part of the chain guiding face. | 04-18-2013 |
20130150192 | COMPLIANT GUIDE DEVICE - A compliant guide device for a chain or a belt is provided. The compliant guide device includes a contact section and a mounting section. The contact section is configured to compliantly contact both a slack side and a tension side of the chain or belt. The mounting section is configured to be moveably mounted about a shaft utilized with the chain or belt. | 06-13-2013 |
20130190117 | Tensioning Device with an Unlocking Element Having a Ramp Section - A tensioning device is provided for an endless drive device, having a housing, a spring-loadable tensioning piston in a piston bore of the housing, a transport locking device, and a device to adjust the working range of the tensioning piston with a retainer element on the housing having at least one spring arm and a retainer profile arranged in the forward section of the tensioning piston in the tensioning direction. The transport locking device comprises a transport groove in the tensioning piston, the spring arm of the retainer element being engageable into the transport groove, and an unlocking element, wherein the unlocking element has at least one ramp section potentially in functional contact with the spring arm. The ramp section exerts an unlocking force on the spring arm over a travel path of the unlocking element relative to the tensioning piston, forcing said spring arm out of the transport groove. | 07-25-2013 |
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 |
20130217525 | BELT TENSIONING DEVICE WITH LOCATING PIN - A tensioning system including a body having a base and an engagement surface pivotally coupled to the base. The system further includes a biasing mechanism operatively coupled to the engagement surface to bias the engagement surface relative to the base, and a locating device coupled to the body. The locating device is configured to rotationally position the tensioning system, and the locating device has an adjustable effective length. | 08-22-2013 |
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 |
20140087903 | CHAIN TENSIONER LEVER - A chain tensioner lever has a chain guide surface which is formed such that in its main area extending from an end near a boss to an end near a piston contact, a curved track that slides along a timing chain in the chain travel direction has a continuously varying radius of curvature. | 03-27-2014 |
20140106914 | SLIDING ELEMENT FOR LUBRICATED SLIDING SYSTEM - The invention relates to a chain guide, respectively a chain tensioner for use in a lubricated sliding system, comprising a surface layer or bearing or comprising a sliding element comprising a surface layer, the surface layer being mainly made of a polymeric material containing a matrix polymer and optionally other components dispersed in said matrix polymer, wherein the matrix polymer consists of a semi-crystalline polyamide (SCPA) having a tensile modulus at 140° C. of at least 800 MPa (measured by the method according to ISO 527-1A). The invention also relates to a power train drive system comprising an engine, a transmission differential and a drive shaft system, a drive chain and a plastic component comprising a sliding element in contact with the lubricated drive chain, wherein the chain guide, the chain tensioner, respectively the sliding element has a coefficient of friction (Co F), measured in lubrication oil at 140° C. at a nominal contact pressure of 1 MPa and a speed of 1 m/s, of at most 0.07. | 04-17-2014 |
20140106915 | QUICK-ACTION CHAIN TENSIONING DEVICE FOR A CHAINSAW, AND SUCH MECHANISM AND METHOD - To facilitate the demounting of a chain ( | 04-17-2014 |
20140113754 | CHAIN DRIVE AND TIMING ASSEMBLY OF AN INTERNAL COMBUSTION ENGINE HAVING SUCH CHAIN DRIVE - In a chain drive, the wear of a chain having a plurality of links, each of which is provided with a pair of pivot pins parallel to each other and transversally spaced apart, from each other and at least three strips parallel to one another and arranged side by side is controlled by means of a detection device adapted to detect the breakage of at least one of the strips and to emit a signal indicating to replace the chain itself. | 04-24-2014 |
20140155208 | CHAIN TRANSMISSION DEVICE FOR DRIVING CAMSHAFT - A timing chain ( | 06-05-2014 |
20140162819 | CHAIN TENSIONER - A chain tensioner includes a shoe including a first spring-receiving slot and a second spring-receiving slot. The first slot includes a first side wall and a first installation tab. The second slot includes a second side wall and a second installation tab. A stack of one or more leaf springs is installed into the first and second spring-receiving slots over first and second installation tabs, and a first end of the stack is laterally retained in the first slot between the first installation tab and first side wall, and a second end of the stack is laterally retained in the second slot between the second installation tab and second side wall. The installation tabs are necessarily lower in height than first and second side walls to allow the spring stack to be installed thereover. The first and second installation tabs are each located in an outboard position and the first and second side walls are located in an inboard position. The outboard position enables the installation tabs to capture the spring stack despite the lower height. | 06-12-2014 |
20140162820 | CHAIN GUIDE AND CHAIN TRANSMISSION DEVICE - The present invention is to suppress wear of outer diameter surfaces of chain guiding rollers ( | 06-12-2014 |
20140171244 | LEAF SPRING TENSIONER FOR A CENTERED POSITION IN THE ENGINE - A traction device tensioner for a traction device drive of an internal combustion engine, comprising a tensioning element whose front makes contact with the traction device and whose rear faces away from it, and also including a spring that is positively affixed to the tensioning element and that serves to make contact with a support element that is separate from the traction device tensioner, whereby a first end of the spring is positively affixed to a rear holding section of the tensioning element, whereby a second end of the spring is fastened to the rear of the tensioning element via snap-on and/or clip connections. A traction device drive having such a traction device tensioner. | 06-19-2014 |
20140179472 | CHAIN GUIDE AND CHAIN TRANSMISSION DEVICE - A chain guide is provided by which a chain can be guided silently. The chain guide includes: a guide base arranged along a portion of the outer periphery of a chain for transmitting torque and elongated in the direction in which the chain travels; a plurality of roller shafts spaced apart from each other in the longitudinal direction of the guide base; and a plurality of rollers for guiding the chain. The rollers are rotatably supported by the respective roller shafts. The rollers guide the chain by rolling. An arrangement interval between each adjacent pair of the rollers is set such that any two of the pins by which pieces of the chain are joined together do not pass any two of the rollers at the same time. | 06-26-2014 |
20140256487 | METHOD FOR PRODUCING A TENSIONING OR GUIDE RAIL WITH A VIBRATION ABSORBER - A method for producing a tensioning or guide rail with a base body, and a vibration absorber arranged on the base body is provided, comprising the steps of: providing a base body, at least partially embedding the base body into plastic material that is in a flowable state, and hardening the plastic material to obtain a vibration absorber that is captively arranged on the base body. The method also relates to a respective rail and to a continuous drive for a combustion engine. | 09-11-2014 |
20140302955 | SLIDE RAIL FOR TENSIONING AND GUIDING AN ENDLESS DRIVE MEMBER AND METHOD FOR MANUFACTURING SAID SLIDE RAIL - In the field of a slide rail for tensioning and guiding an endless drive member, comprising at least one bore and a screw captively held in the bore, permitting the captive mounting of screws even in thin-walled slide rails is provided. A sleeve is mounted in the bore and the sleeve comprises engagement elements at its end facing the rail, said engagement elements being engaged with the wall of the bore, and a stop collar lying against a stop surface formed at the slide rail, and lock elements are embodied in the sleeve which engage the thread of the screw and lock the screw at least in an assembly position, wherein said slide rail is thin-walled. Furthermore, an assembly method is provided for manufacturing the slide rail with a captively held screw and to the loss prevention device per se. | 10-09-2014 |
20140335985 | SLIDING ELEMENT FOR USE IN AN ENGINE OR CHAIN TRANSMISSION APPARATUS - The invention relates to a sliding element for use in a chain transmission apparatus, comprising a sliding contact section for engagement in sliding contact with a chain, wherein the sliding contact section consists of a plastic material comprising a matrix polymer and dispersed therein graphite platelets comprising platelet particles having a thickness of at most 250 nm. The invention relates to an engine comprising a first sliding element in sliding contact with a second element, wherein at least a sliding contact section is made of such a plastic material comprising such thin graphite platelets. The invention further relates to a chain transmission apparatus, comprising a chain, and a sliding element comprising (i) a sliding contact section engaged in sliding contact with the chain and (ii) a main body reinforcing and supporting the sliding contact section, wherein the sliding contact section consists of such a plastic material. | 11-13-2014 |
20140342861 | 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. The stop wall can be positioned to allow an amount of lateral sliding of the stationary guide, or can be 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. | 11-20-2014 |
20150018147 | ARTICULATED CHAIN WITH LOW-FRICTION LINK PLATE BACK - An articulated chain having alternating inner and outer chain links connected by hinge, having a running direction, each inner link comprising a link plate and each outer link comprising two link plates and two hinge pins interconnecting, each hinge pin rotationally fixed in an opening of the associated outer link plates and extending through an opening of the associated inner link to form a chain hinge, the links having plate backs for contact with a tensioning or guide rail. The link plate back comprises a leading area viewed in the running direction and an adjoining trailing area, the leading area extending substantially parallel to a plane projected between center lines of pin openings and hinge openings, respectively, and the trailing area extending from a part of the link plates at an angle to the plane projected between the center lines, the vertex of the angle pointing in the running direction. | 01-15-2015 |
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 |
20150072815 | SELF-ADJUSTING CHAIN TENSIONER - A self-adjusting chain tensioner is configured to adjust tension of a chain that connects a self-ratcheting tension drive pulley and a bearing pulley in response to ambient temperature. The self-adjusting chain tensioner has a dynamic block immediately adjacent to the chain with two pair of vertical plate guides. A horizontal plate is attached to the dynamic block with an inner spring and an outer spring. Vertical plates attached to the horizontal plate assists in movement of the dynamic block in a vertical direction. A bracket attached to the horizontal plate attaches the self-adjusting chain tensioner to a motorcycle. The inner spring and the outer spring can expand or contract in response to changes in the ambient temperature which adjusts a position of the dynamic block and thus keeps consistent tension on the chain which reduces wear on bearings in the bearing pulley. | 03-12-2015 |
20150105197 | CHAIN GUIDE AND CHAIN TRANSMISSION DEVICE - A chain guide includes roller element bearings adapted to guide, while rolling, a timing chain through which torque is transmitted. The chain guide further includes a guide base arranged along one side of the timing chain and having an opposed pair of side plates. Each side plate is formed with plural shaft engaging portions arranged so as to lie on a circular arc. The chain guide further includes roller shafts having their ends supported by the respective shaft engaging portions, and rotatably supporting the roller element bearings. An oil guide hole is formed in a wall surface of each shaft engaging portion facing the end surface of the roller shaft so as to extend through the side plate to its outer side surface. | 04-16-2015 |
20150345596 | TENSIONER FOR A CAMSHAFT-CAMSHAFT CHAIN DRIVE - A tensioner, for a camshaft-camshaft chain drive with a drive chain and camshaft bearing bridge for fastening camshaft bearings to an engine block, comprises a tensioner housing with a guiding-side guide shoe, a tensioning piston slidably guided in a piston bore of the tensioner housing and provided with a tensioning-side tensioning shoe, and a fastening flange projecting laterally from the tensioner housing and having a mounting surface facing the tensioning side. A mounting plane defined by the mounting surface of the fastening flange intersects the tensioner housing at an axial distance from the guiding surface of the guide shoe at most 40% of axial transport length of the tensioner between the guiding surface of the guide shoe and the tensioning surface of the tensioning shoe. The camshaft bearing bridge has a contact surface for the fastening flange, to be in contact with the mounting surface of the fastening flange. A camshaft-camshaft chain drive for an internal combustion engine comprising such a tensioner is provided, where the camshaft bearing bridge can be attached to an engine block component. | 12-03-2015 |
20150362048 | TENSIONING RAIL HAVING AN ALSI ALLOY SUPPORT BODY - Tensioning rail for tensioning a traction element ( | 12-17-2015 |
20150369345 | TENSIONING RAIL WITH RESILIENT PRESS-ON REGION - A tensioning rail for an endless drive, in particular a timing chain drive of an internal combustion engine, comprises a sliding lining body and a reinforcement body inserted in the sliding lining body and connected thereto by a detent connection, the sliding lining body comprising a slide rail for contact with an endless drive and a press-on region for the tensioning piston of a tensioning device. The tensioning rail is characterized in that the press-on region is arranged in a resiliently movable fashion on the slide rail and comprises a detent device as a constituent part of the detent connection such that the detent device is adapted to be locked due to the resilient movement of the press-on region. An endless drive having a tensioning rail of the type disclosed is also provided. | 12-24-2015 |
20160033016 | TENSIONER WITH SPRING FORCE CONTROL - A tensioner for tensioning a chain or belt span which uses two pistons. The movement of the two pistons may be coupled together. The first piston provides damping to the chain span and a second piston provides variable, dominant and automatically adjusting spring force to the chain span. The tensioner automatically adjusts the mean tension force to keep the chain or belt tension as low as possible without sacrificing chain or belt control, significantly improving drive efficiency at new chain or belt conditions and conditions with dynamic loads. | 02-04-2016 |
20160069432 | TENSIONING OR GUIDE RAIL HAVING A RIVETED SLIDING LINING BODY - A tensioning or guide rail for a flexible drive, in particular a chain drive of an internal combustion engine, comprises a support body, a sliding lining body attached to the support body and provided with a sliding surface for contacting a flexible drive means. In addition, the sliding lining body has a fastening opening extending from a rear face, which rests on the support body, to the sliding surface and having arranged therein a fastening bolt connected to the support body by a force-closed connection or an integral bond, and the fastening bolt comprises an enlarged formed head produced by means of a riveting process and used for securing the sliding lining body on the support body. | 03-10-2016 |
20160097439 | TENSIONING OR GUIDE RAIL HAVING A CONTINUOUS RECESSED SLIDING BODY - A tensioning or guide rail for a drive chain, in particular for a chain drive of an internal combustion engine, comprises a carrier body with at least two chain guide sections and with at least one recessed section. The at least one recessed section is arranged between two chain guide sections and recessed relative to a tangent connecting the adjoining chain guide sections, the at least two chain guide sections having each a sliding-contact surface for contacting the drive chain. A continuous sliding body is arranged on the carrier body along the at least two chain guide sections and the at least one recessed section, the sliding body defining the sliding-contact surfaces of the at least two chain guide sections and a surface of the at least one recessed section, the surface facing the drive chain. | 04-07-2016 |
20160102737 | TENSIONING RAIL WITH LUBRICANT PASSAGE - A tensioning rail for an endless drive means, in particular for a chain drive of an internal combustion engine, comprises a support body and a sliding body arranged on the support body and having a sliding surface for contacting the endless drive means as well as at least one lubricant opening for wetting the sliding surface with lubricant. A press-on area provided on the support body and used for contacting a tensioning device has an inflow opening for the lubricant. A feed passage extending from the inflow opening through the support body and a lubricant passage extending in the longitudinal direction of the support body allow the supply of lubricant to the at least one lubricant opening. | 04-14-2016 |
20160102738 | TENSIONING RAIL WITH WEAR PROTECTION ELEMENT - A tensioning rail for a drive chain, in particular for a chain drive of an internal combustion engine, comprises a basic body and a spring unit, the basic body including a sliding surface for contact with the drive chain and a press-on surface. The spring unit comprises a tensioning end arranged on the press-on surface and a support end supportable on a counter bearing, a wear protection element being provided, which is arranged at the support end of the spring unit. In addition, the invention relates to a chain drive including such a tensioning rail as well as to the use of such a tensioning rail for a chain drive of an internal combustion engine. | 04-14-2016 |
20160116030 | COMPLIANT TENSIONER ARM - A compliant tensioner arm assembly including an arm, an elastically deformable body disposed on a surface of the arm, and a sliding surface disposed on the elastically deformable body is disclosed. The elastically deformable body allows the sliding surface to yield to a load condition of the sliding surface so that the sliding surface yields to the load condition. | 04-28-2016 |
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 |
20160146314 | RETENTION MECHANISMS FOR BICYCLE DRIVE TRAINS - Retention mechanisms for bicycle drive trains are disclosed. In some embodiments, a retention mechanism may include a backplate having at least one spur, at least one chain ring coupled to the backplate, and a slider coupled to the spur. The slider may be positioned between the at least one chain ring and a bicycle chain, and may include at least one track and at least one chain guide (e.g., an O-ring or ring component) seated in the track. The at least one chain guide may be configured to rotate about the track while applying tension to the bicycle chain so as to reduce friction and/or dampen noise. | 05-26-2016 |
20160252166 | TENSIONER LEVER | 09-01-2016 |
20160252167 | TENSIONING RAIL WITH BAYONET CATCH | 09-01-2016 |