Patent ID: 6457568
Filing Date: 2002-10-01
Classification: B60T,F16D,Y10S,Y10T

Abstract:
A brake actuator assembly for a park and hold hydraulic brake system of a vehicle comprising:(A) a brake pedal, for a hydraulic braking system, which is pivotal, under the imposition of manual operating forces, from an at-rest position 1) through an operating stroke in which the vehicle's brakes are engaged and in which said brake pedal returns automatically to said at-rest position upon release of the manual operating forces to release the brakes, 2) through a locked position which is located beyond an end of said operating stroke, and 3) to a beyond-lock position which is located beyond said locked position; (B) a brake pedal locking mechanism which cooperates with said brake pedal so as to 1) automatically latch said brake pedal in said locked position upon movement of said brake pedal into said locked position, thereby holding the brakes in their engaged condition upon release of the actuating forces, and 2) automatically unlatch said brake pedal from said locked position upon movement of said brake pedal into said beyond-lock position, thereby permitting return of said brake pedal to said at-rest position upon release of the actuating forces and releasing the brakes; (C) an accelerator pedal; and (D) a kickoff mechanism which couples said accelerator pedal to said brake pedal locking mechanism and which actuates said brake pedal locking mechanism to unlatch said brake pedal from said locked position upon actuation of said accelerator pedal.