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| Number | Title | Issue Date |
| 8142313 | Hydraulic tensioner with overtravel limiter A hydraulic tensioner for a drive system, including a flexible, inextensible drive element, has a bi-directional travel limiter associated with a hydraulically biased tensioning cylinder. The travel limiter is bi-directional because it limits not only loading of the... | 03/27/2012 |
| 8025599 | Pivot arm tensioner with sliding ratchet mechanism An engine chain or belt tensioning system includes a tensioner pivot arm with a ratcheting means that includes backlash in an engine timing system. The tensioner system includes a tensioner pivot arm having a fixed pin, radially projecting ratchet teeth, a tensioner... | 09/27/2011 |
| 8021254 | 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 assembl... | 09/20/2011 |
| 8002656 | Tensioner for endless transmission belt A tensioner for an endless transmission belt includes a plunger body and a plunger. The plunger is movably provided in the plunger body to press the endless transmission belt. A pressure chamber provided between the plunger and the plunger body is configured to stor... | 08/23/2011 |
| 7972232 | Chain drive tensioner system with translating pivot point A chain drive tensioner system with translating pivot point is disclosed. The chain drive tensioner system with translating pivot point includes a chain drive tensioner assembly and a tensioner arm in operable communication with a chain. The chain drive tensioner as... | 07/05/2011 |
| 7927242 | Downward angle settable hydraulic tensioner In a hydraulic chain tensioner having a housing, a hollow plunger slidable in a plunger-accommodating hole in the housing, and a hollow sleeve extending into the plunger from a bottom of the plunger-accommodating hole, and a check valve mounted at the opposite end o... | 04/19/2011 |
| 7794345 | Dual backlash chain tensioner A dual backlash tensioner includes a support having a recess therein. A plunger is slidable in the recess and includes a shoe extending outward from the recess. A first resilient member acts between the support and the plunger and urges the shoe outwardly. An oscill... | 09/14/2010 |
| 7771302 | Apparatus for indicating power transmission belt dynamics An apparatus for indicating an automotive power transmission belt dynamic is provided. The apparatus includes a belt tensioner including a support housing and an arm rotatably connected to the support housing. A pulley is carried by the arm, the pulley having a belt... | 08/10/2010 |
| 7691017 | Hydraulic tensioner A hydraulic tensioner comprising a piston slidably inserted in a piston bore of a housing having rack teeth on an outer circumference thereof, a piston spring biasing the piston in a protruding direction, a pawl member having teeth engageable with the rack teeth of ... | 04/06/2010 |
| 7677999 | Chain tensioner A chain tensioner includes a housing defining a cylinder chamber, and a plunger having a small-diameter end and a spring both mounted in the cylinder chamber. A register ring is fitted in a ring-receiving groove formed in the inner periphery of the cylinder chamber ... | 03/16/2010 |
| 7641575 | Hydraulic tensioner The check valve unit of a hydraulic tensioner comprises a check ball, a ball guide and a disc-shaped retainer. The retainer is fixed to the high pressure oil chamber side of the ball guide by crimping an annular portion of the ball guide over the outer edge of the r... | 01/05/2010 |
| 7641576 | Reversible locking device for a timing chain tensioner A reversible locking device 1 for a tensioner 100 of a timing chain 20 includes a locking device body 3, integral with the tensioner 100 and protruding with respect to the body of the tensioner 100, which has a shaped slot | 01/05/2010 |
| 7618339 | Hydraulic tensioner with improved relief valve In a hydraulic tensioner having a relief valve inside its plunger, a relief valve spring-receiving plug, press-fit into the plunger is formed by forging a plurality of flat surfaces on its exterior. These flat surfaces, in cooperation with the cylindrical inner wall... | 11/17/2009 |
| 7597639 | Belt tensioner The invention is an improved tensioner for tensioning a power transmission belt. It is of the type having a pulley adapted to communicate with a surface of a power transmission belt, an arm supporting the pulley upon which the pulley is rotatably mounted via a pulle... | 10/06/2009 |
| 7527572 | Chain tensioner A chain tensioner includes a housing having a cylinder chamber. A plunger is slidably mounted in the cylinder chamber. A spring is mounted in the cylinder chamber to bias the plunger outwardly of the cylinder chamber. The plunger has a radially extending locking pin... | 05/05/2009 |
| 7507172 | Timing belt tensioner with stops controlled by frictional brake A tensioner (10) features a backstop device (40) which allows free rotation of the pivot arm (20) in one direction but not the other. Reverse rotation is prevented by friction that is able to resist torque on the pivot arm (20) under ordi... | 03/24/2009 |
| 7494434 | Belt alternator starter accessory drive with dual tensioner An accessory drive for an engine has a belt driven starter generator adapted for driving and being driven by the engine. In an exemplary embodiment, the drive includes a first engine drive pulley and a second starter drive pulley. A drive belt engages the drive pull... | 02/24/2009 |
| 7455606 | Mechanical chain tensioner with a rotational ratcheting device A blade tensioner comprising a blade shoe with a proximal end pivotally attached to the bracket and a distal end of a clevis shape having a raised portion and a recessed portion for receiving a semicircular ratchet wheel, with an edge of the raised portion defined b... | 11/25/2008 |
| 7455607 | Tensioner A tensioner that includes a piston supported slidably in a piston bore formed in a housing, a piston spring biasing the piston in the protruding direction, and a circlip member having an expandable ring-shaped body that is engageable with the rack teeth of the pisto... | 11/25/2008 |
| 7427250 | Ring type hydraulic tensioner In a hydraulic tensioner a cylindrical plunger slidably protrudes from a plunger-accommodating hole in a tensioner housing. A check valve unit allows oil to flow under pressure into a high pressure chamber formed by the plunger and the housing, but blocks reverse fl... | 09/23/2008 |
| 7390276 | Belt assembly with a tensioning device A belt assembly, particularly for driving camshafts of an internal combustion engine, includes a driving gear, at least one driven gear, a belt, and a first and a second tensioner blade that are joined to one another for transmitting a defined force and motion. One ... | 06/24/2008 |
| 7360624 | Electric power steering apparatus An electric power steering apparatus includes a speed reducing mechanism for decelerating the rotation of a rotatable shaft in an electric motor and a converting mechanism for converting the output rotation of the speed reducing mechanism into the axial movement of ... | 04/22/2008 |
| 7351170 | Hydraulic tensioner A hydraulic tensioner comprises a hollow plunger slidable in a plunger-accommodating hole in a housing, the plunger and housing forming a high pressure oil chamber. A check valve unit, which includes a check ball and a check ball retainer, allows oil to flow into th... | 04/01/2008 |
| 7331891 | Tensioner for a chain or belt A chain or belt tensioner comprises a plunger displaceable in a bore of a housing between retracted and extended positions. The plunger and the bore between them define a variable volume chamber for receipt of pressurised hydraulic fluid. The tensioner is designed f... | 02/19/2008 |
| 7322895 | Automotive accessory drive system The apparatus of the present invention provides an improved automotive accessory drive system. The automotive accessory drive system including a drive pulley operatively connected to an engine, and a plurality of driven pulleys operatively connected to one of a plur... | 01/29/2008 |
| 7315108 | Driving device A piezoelectric element expands and contracts when a pulse voltage is applied. A fixing body is fixed to one end of the piezoelectric element in an expansion-contraction direction. A driving shaft is fixed to the other end of the piezoelectric element in the expansi... | 01/01/2008 |
| 7311168 | Rear wheel support structure of motorcycle or three-wheeled vehicle In a rear wheel support structure for a motorcycle or a three-wheeled vehicle in which a proximal end portion of a swing arm is vertically tiltably supported on a vehicle body frame by way of a tilting support shaft, a rear wheel is rotatably supported on the swing ... | 12/25/2007 |
| 7310996 | Sensor A sensing system having at least one magnetic or inductive sensor for determining the position of a piston. The sensor system has a positioning device with which at least two sensing positions for the sensing system can be set and adjusted. ... | 12/25/2007 |
| 7285065 | Belt tensioner with installation pin A belt tensioner for tensioning the belt of a belt drive system includes an eccentric adjusting member, a pivot structure eccentrically mounted on the adjusting member for pivoting around the adjusting member, a belt-tensioning pulley mounted to rotate on the pivot ... | 10/23/2007 |
| 7267626 | Auto tensioner The boss portion of an arm is oscillatably supported with respect to a support member. A tension pulley is rotatably engaged with a tip portion of the arm. A guide plate is fixed to the axial tip portion of the support member to face the boss portion. A friction pla... | 09/11/2007 |
| 7258225 | Method and apparatus for diverting material An apparatus for diverting material in a controlled manner comprising a diverter plate attached to a mounting assembly. The diverter plate is shaped for receiving falling material and facilitating the flow of the material onto a conveyance means or into storage. The... | 08/21/2007 |
| 7250015 | Hydraulic tensioner In a hydraulic tensioner, a check valve provided on the rear end of a circular, cylindrical inner tensioner body, fits into a recess formed in the bottom of a hole in an outer body which receives the inner body. The check valve is radially offset from the center lin... | 07/31/2007 |
| 7247109 | Pulley fixing apparatus of image forming apparatus A pulley fixing apparatus of an office machine having a pulley fixing part rotatably fixing a driven pulley on a frame, a sliding part movably supporting the pulley fixing part on the frame, and an automatic tension adjusting part elastically urging the pulley fixin... | 07/24/2007 |
| 7244204 | Hydraulic tensioner In a hydraulic tensioner, a check valve assembly comprises a synthetic resin ball guide with a check ball movable therein. Oil grooves are provided in the wall of the ball guide, and minimum clearance is allowed between the ball and the wall of the ball guide. The b... | 07/17/2007 |
| 7240776 | Bottom valve apparatus of hydraulic shock absorber In a bottom valve apparatus in which a flow passage is formed in a bottom piece, a check valve opening and closing the flow passage is provided in one face side of the bottom piece, and a coil spring urging the check valve is fastened by a bolt and a nut which are p... | 07/10/2007 |
| 7241239 | Auto tensioner In an auto tensioner, a high pressure oil chamber sectioned by a leading end portion of a cylinder and a plunger is provided within the cylinder. A gas chamber and an oil reservoir chamber are sectioned in a sealed manner in an outer periphery of the cylinder and th... | 07/10/2007 |
| 7237647 | Electric power steering apparatus An electric power steering apparatus includes a speed reducing mechanism for decelerating the rotation of a rotatable shaft in an electric motor and a converting mechanism for converting the output rotation of the speed reducing mechanism into the axial movement of ... | 07/03/2007 |
| 7235027 | Automatic tensioner for timing chain The tensioner includes a cylinder inside a large capacity reservoir tank without interference with other components. The tensioner maintains oil inside the cylinder at all times, thereby improving the response of the tensioner when the engine is re-started after a l... | 06/26/2007 |
| 7226377 | Tensioner with adjustable biasing force of a traction member A tensioner for a traction member, in particular a belt of a traction drive for an internal combustion engine, includes a base constructed for rotation about a rotation axis and having a pivot arm. The pivot arm has a free end for connection of a rotatable tension r... | 06/05/2007 |
| 7223190 | Hydraulic chain tensioner In a hydraulic chain tensioner for an engine timing drive, an annular groove is formed on an outer circumferential surface of a plunger, and a friction ring is disposed in the groove. The friction ring is composed of an external resin ring and an internal steel ring... | 05/29/2007 |
