Wheel cylinder

Motors: expansible chamber type – Fluid supply through diverse paths to single expansible chamber – Second path activated in response to pressure or flow in...

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Details

91422, 188349, 303 6C, F15B 13042

Patent

active

042928834

ABSTRACT:
A wheel cylinder includes a housing defining a bore. A piston is reciprocably received in the bore and cooperates with the housing to define a pressure chamber. The wheel cylinder comprises a passage for supplying pressurized fluid to the pressure chamber from a fluid pressure source. The supply passage includes a first portion defined by an annular groove on the piston and a blind axial bore in the piston which communicates with both the annular groove and with the pressure chamber. A valve apparatus is received in the blind bore and modulates the fluid pressure supplied to the pressure chamber as a function of the fluid pressure provided by the pressure source.

REFERENCES:
patent: 2207173 (1940-07-01), Goepfrich
patent: 2282556 (1942-05-01), Bowen
patent: 2858804 (1958-11-01), Banker
patent: 3707210 (1972-12-01), Nyunoya et al.
patent: 3866984 (1975-02-01), Seip
patent: 3904253 (1975-09-01), Riquart
patent: 4188073 (1980-02-01), Ishikawa et al.

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