Master cylinder assembly

Details Master cylinder assembly Master cylinder assembly

1976-11-11

1978-09-19

Schwadron, Martin P.

Power plants

Pressure fluid source and motor

Pulsator

60562, 251339, B60T 1120

Patent

active

041143779

ABSTRACT:
A master cylinder has tilt compensating valves including positioning stop collars that catch the portions of master cylinder piston assemblies to position the tilt compensating valves axially during assembly and eliminate travel losses required to close the valves which otherwise occur due to tolerance variations. A rubber seal holds each valve assembly in position once a valveretaining nut is tightened. The master cylinder piston positions are set at a gage dimension before tightening the valve nuts. The valves are therefore so positioned that they close upon a predetermined minimum amount of piston movement at the beginning of master cylinder actuation. The valve nuts may be tightened after the master cylinder is connected to the push rod assembly or a power brake unit, thus eliminating additional tolerance losses caused by push rod or booster variations. The tilt valves have very short stem lengths in relation to valve seat opening diameters in order to obtain maximum valve opening with minimum piston travel in the bore.

REFERENCES:
patent: 3262273 (1966-07-01), Harvey
patent: 3555822 (1971-01-01), Rivetti
patent: 3701257 (1972-10-01), Gaiser
patent: 3795111 (1974-03-01), Haraikawa
patent: 3854499 (1974-12-01), Sievenpiper

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