Patent ID: 6467267
Filing Date: 2002-10-22
Classification: B60T

Abstract:
A fluid pressure boosting device comprising:a housing, an input member which is slidably moved in the housing by input applied at a time of an operation, a control valve which is provided in the housing and operated by the input member for controlling fluid pressure of a fluid pressure source according to a travel of said input member to develop working fluid pressure for operating a working unit so that said working fluid pressure acts on a surface of said control valve in an inoperative direction, and an elastic member disposed between said control valve and said input member for developing a force according to the travel of the input member relative to the housing so that the force by the elastic member acts on said control valve in an operative direction, said control valve being controlled according to said travel such that a force generated by said working fluid pressure balances with the force generated by said elastic member.