Patent ID: 7637829
Filing Date: 2009-12-29
Classification: F16H

Abstract:
1. An eccentric pivot arm tensioner comprising: a pivot arm having at least one travel stop and a pulley rotationally disposed on the pivot arm; the pivot arm pivotally engaged with a base; the base comprising an index member, the index member engagable with a cooperating feature on a mounting surface; a torsion spring disposed between the pivot arm and the base, the torsion spring imparting a spring force to the pivot arm; a first member disposed on the pivot arm; a second member disposed on the base, the second member cooperatively engagable with the first member whereby the torsion spring is held in a temporarily preloaded condition; a lock member temporarily engaged with the pivot arm, the lock member being rotatable by a movement of the pivot arm and disengagable from the pivot arm; a stop member engaged with the lock member, the stop member rotatable by the lock member during installation of the tensioner such that the stop member is disposed in a predetermined position with respect to the travel stop once the pivot arm has reached an operating position; and the stop member axially moveable whereby an initial axial movement of the stop member releases the first member from the second member thereby releasing the pivot arm to rotate, and upon a further axial movement of the stop member disengaging the lock member from the pivot arm.