Patent ID: 6390133
Filing Date: 2002-05-21
Classification: B60T,F15B

Abstract:
A hydraulic accumulator assembly for a hydraulic brake system, the accumulator assembly comprising:a pump housing having therein at least one accumulator bore, said accumlator bore having an inner wall; a piston movable within said accumulator bore, said piston dividing said accumulator bore into an accumulator chamber for receiving a hydraulic fluid and a spring chamber housing a gas, said accumulator chamber being communicable with the hydraulic brake system, and said spring chamber being substantially sealed from said accumulator chamber; a spring in said spring chamber for biasing said piston in the direction of said accumulator chamber; and a vent bore communicating with said spring chamber, said vent bore intersecting said inner wall and being formed in a way that allows said piston to pass over said vent bore substantially without interference.