Patent ID: 6647858
Filing Date: 2003-11-18
Classification: B60T,Y10T

Abstract:
Apparatus for providing a force to a power booster of a brake system, comprising:a first input push rod member having one end adapted to be operatively coupled to a brake pedal and an opposite free end; a second input push rod member having one end adapted to be operatively coupled to a power booster of a brake system for providing a force to the power booster upon an input force being applied to the brake pedal and an opposite free end; a housing member operatively supporting the free ends of the first and second input push rod members so that the first and second push rod members extend along a common axis; a biasing element mounted within the housing member and operable to bias the first and second input push rod members for movement relative to each other along the common axis in response to the applied input force, the biasing member having a free length and a fully compressed length along the common axis; and a shunt member mounted within the housing member and having a shunt body extending along the common axis, the shunt member being operable to shunt the applied input force at a position intermediate the free length and fully compressed length of the biasing element so that the input force is thereafter applied to the shunt body at the intermediate position to shunt further compression of the biasing element under the applied input force.