Patent ID: 8002101
Filing Date: 2011-08-23
Classification: F16H

Abstract:
1. A park lock assembly for an automatic transmission, the park lock assembly comprising: a wheel coupled for common rotation with an output shaft of the transmission, the wheel including a plurality of radial projections including an end portion having an outer surface, wherein the plurality of radial projections define a plurality of radial recesses disposed circumferentially between the plurality of radial projections; a resilient arm disposed adjacent the wheel and including a first end, a second end, and an engagement surface opposing the outer surface of the end portion of the plurality of radial projections, wherein the resilient arm is positionable between an engaged position and a disengaged position, and wherein the engagement surface contacts the outer surface of the end portion in the engaged position and is separated from the outer surface in the disengaged position; and a positioning assembly engaged with the resilient arm to move the resilient arm between the disengaged position and the engaged position, whereby the resilient arm provides a flexing force from the engagement surface of the resilient arm to the outer surface of the wheel in the engaged position, and whereby the flexing force includes a radial component force directed radially inward on the wheel and a tangential component force that resists rotation of the wheel.