Hydraulic brake booster and shield therefor

Details Hydraulic brake booster and shield therefor Hydraulic brake booster and shield therefor

1976-10-15

1978-08-01

Maslousky, Paul E.

Expansible chamber devices

With fluid purifying means

92168, F15B 2104, F16J 1518

Patent

active

041035933

ABSTRACT:
A hydraulic brake booster includes a housing that defines a pressure chamber. A piston slidably mounted in a housing bore is responsive to increasing pressures in the pressure chamber to move relative to the housing to actuate a braking mechanism, such as a master cylinder. The piston carries a sealing ring to slidingly seal the piston to the housing bore and a shield to protect the surface of the housing bore from atmospheric contaminates during long periods, when the hydraulic booster is in a brake-release position. The shield releasably connects to the piston and telescopes into a piston cavity for compact assembly with the piston.

REFERENCES:
patent: 1727398 (1929-09-01), Farmer et al.
patent: 1939845 (1933-12-01), Farmer
patent: 1964029 (1934-06-01), Brackenbury
patent: 2005387 (1935-06-01), Pelton
patent: 2142190 (1939-01-01), Hewitt
patent: 2367185 (1945-01-01), Cary
patent: 2545506 (1951-03-01), Walsh
patent: 2722402 (1955-11-01), Crookston
patent: 3713364 (1973-01-01), Francia

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