Patent application number | Description | Published |
20080293531 | Chain Noise Damping Device - A sprocket (S) for a chain driven power transmission system used on an internal combustion engine. Severe ITVH (Noise, Vibration, Harshness) characteristics associated with a chain engaging the sprocket is damped by two annular rings (R | 11-27-2008 |
20090093329 | CHAIN NOISE REDUCTION DEVICE - A cushion ring ( | 04-09-2009 |
20090205206 | ASSEMBLY SYSTEM AND METHOD FOR A TENSIONED CHAIN DRIVE SYSTEM - The assembly method includes packaging of items for shipment and secures components of the assembly in a fashion and in the related position required for further assembly, as a unit, to an engine that is in the process of being assembled. The timed assembly arrives at the engine plant secured together such that it allows handling, at least in part, as a single component and with its parts arranged in the relative position required for proper timing and for securing to other components of the engine. The chain ( | 08-20-2009 |
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 |
20100029424 | CHECK VALVE WITH SPRING RETAINED BALL - A portion of a bore of a hydraulic tensioner is used as a check valve seat for a check ball and an end of the plunger biasing spring received in the bore of the hydraulic tensioner has a tang with a length extending in from an outer diameter of the spring, to limit and retain the travel of a check ball from the check valve seat when the pressure of an external source is not greater than the pressure in a fluid chamber formed between the bore of the housing and the plunger. | 02-04-2010 |
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 |
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 |
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 |
20140179471 | CHAIN OR BELT TENSIONER WITH A RATCHET THAT DEACTIVATES - A tensioner comprising a piston slidably received within a piston bore of the housing having a plurality of grooves formed on an outer circumference, the piston forming a first pressure chamber with the piston bore. The tensioner uses a mechanism to remove a sliding pawl or expandable clip from engaging the grooves on the piston, such that the piston can move towards the housing and reduce chain load when fluid pressure is reduced in the first pressure chamber during engine shutdown, but not so much as to leave the chain uncontrolled during engine restart. The mechanism may for example be a fluid biased spool piston which engages the expandable clip or a pawl piston that engages a sliding pawl. | 06-26-2014 |