Patent application number | Description | Published |
20080293526 | Hydraulic Tensioner with a Band Type Check Valve - A hydraulic tensioner is described. The hydraulic tensioner hasincludes an inlet portion which defines a pressurized fluid inlet. The hydraulic tensioner also hasincludes a housing defining a chamber which is coupled to the inlet portion. A band check valve separates the pressurized fluid inlet from the chamber, and a piston slideably engages the housing. An automobile having a driving shaft and a driven shaft may include such a hydraulic tensioner. A method of manufacturing athe hydraulic tensioner is also disclosed. | 11-27-2008 |
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 |
20090325749 | ROTATIONAL ONE WAY CLUTCH CHAIN TENSIONER WITH FRICTIONAL DAMPING - A tensioner for a power transmission system includes two tensioning arms operatively engaged with a strand of either the chain or the belt of the power transmission system. The upper end of each tensioning arm is connected to a one way rotational clutch which is pivotally mounted between the upper ends of the tensioning arms. The one way clutch rotates in one direction in response to changing chain loads to adjust the tension substantially equally on both strands at the same time. In order to prevent over-tensioning, a damping means is included in the one-way clutch. When a pre-determined overload threshold is reached, the amount of torque required to overcome the coefficient of friction of a spring in the damper allows the one way clutch to slip in the direction opposite from its normal rotational direction, thereby relieving the overload condition on the chain. | 12-31-2009 |
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 |
20100170458 | CONCENTRIC CAM WITH CHECK VALVES IN THE SPOOL FOR A PHASER - A camshaft assembly for an internal combustion engine has a hollow outer shaft with slots along its length and an inner shaft with holes along its length. The holes on the inner shaft are aligned with the slots on the outer shaft. A first set of cam lobes are fixed to the outer shaft and a second set of cam lobes are placed on the slots of outer shaft with a clearance fit. A means fixes the second set of cam lobes to the inner shaft, while simultaneously allowing the second set of cam lobes to be a clearance fit to the outer shaft. The means fixing the second set of cam lobes to the inner shaft may be a hollow pin which is hydroformed or a rivet insert which is expanded by insertion, pulling, and removal of a threaded rod. | 07-08-2010 |
20110162604 | PHASER BUILT INTO A CAMSHAFT OR CONCENTRIC CAMSHAFTS - A camshaft assembly for an internal combustion engine comprising: a hollow outer shaft | 07-07-2011 |
20110162605 | CAM TORQUE ACTUATED PHASER USING BAND CHECK VALVES BUILT INTO A CAMSHAFT OR CONCENTRIC CAMSHAFTS - A camshaft assembly in which a bearing ( | 07-07-2011 |
20130192550 | ADDITIONAL SPRING AND FOLLOWER MECHANISM BUILT INTO VALVE COVER OR BEARING BRIDGE - A torque pulsated variable cam timing camshaft arrangement for a reciprocating piston, internal combustion engine is provided. The arrangement includes a sprocket. A torque pulsated phaser unit is operatively associated with the sprocket. A camshaft is operatively associated with the sprocket and the camshaft torsionally powers the phaser unit. The camshaft has a cam lobe engaged with a first cam follower for controlling a position of a spring biased valve. A spring biased second cam follower is engaged with the cam lobe providing a torsional input to the camshaft. | 08-01-2013 |
20140202408 | FLEXIBLE COUPLING/LINKAGE FOR AN ACTUATOR - A flexible coupling linkage ( | 07-24-2014 |
20140261266 | SHARED OIL PASSAGES AND/OR CONTROL VALVE FOR ONE OR MORE CAM PHASERS - A variable cam timing phaser ( | 09-18-2014 |