Master cylinder

Power plants – Pressure fluid source and motor – Pulsator

Patent

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Details

60562, B60T 1128

Patent

active

047079894

ABSTRACT:
A piston defines in a cylinder housing a pressure chamber connected to a brake pipe and a fluid supply chamber connected to an oil reservoir. The piston has a recess facing the pressure chamber at one end thereof. A valve member is provided in the recess for making or breaking fluid communication between the pressure chamber and the oil reservoir through the supply chamber. A compression spring is disposed in the recess for urging the valve member into its closed position. A spring retainer is fitted about the end of the piston for holding the spring in the recess. A supporting member is provided in the housing on the opposite side of the pressure chamber from the piston. The valve member is supported by a connecting rod extending axially movably through the spring retainer and the supporting member. A compression spring is connected between the spring retainer and the supporting member for urging the connecting rod in the direction which causes the valve member to open. The spring retainer is movable axially of the piston, while the supporting member is fixed to the housing.

REFERENCES:
patent: 3406522 (1968-10-01), Fay
patent: 4132073 (1979-01-01), Ewald
patent: 4267697 (1981-05-01), Hodkinson
patent: 4313302 (1982-02-01), Farr
patent: 4384458 (1983-05-01), Kawaguchi
patent: 4516400 (1985-05-01), Tarplee
patent: 4550567 (1985-11-01), Schaefer
patent: 4598955 (1986-07-01), Belart
patent: 4621498 (1986-11-01), Schaefer

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