Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Patent
1996-03-12
1998-07-07
Ferensic, Denise L.
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
137315, 251337, F16K 3112, F16K 3126
Patent
active
057753709
ABSTRACT:
A fluid pressure control valve apparatus, including a main body in which an input opening is formed in communication with a master cylinder and an output opening is formed in communication with a wheel cylinder. A stepped bore in the main body communicates with the openings, the bore being enlarged in the direction towards the input side. A cover member is inserted into the input opening and a stepped piston sidably fits into the bore and extends between a through hole of the cover member and the output opening side of the bore. A path in the piston has one end communicating with the through hole of the cover member and another end communicating with the output opening side. A valve seat formed at the one end of the path and a valve body are arranged in a valve chamber formed in the through hole of the cover member. A valve spring urges the valve body toward the valve seat and a retainer member supports one end of the valve spring. A pre-loaded spring urges the piston in a direction to separate from the valve body. An annular thin projecting portion formed integrally with the main body at the input opening side projects outwards from the end of the cover member and the cover member is fixed to the main body by deforming the projecting portion towards the cover member. An outer circumferential portion of the retainer member is held between the deformed projecting portion and the cover member.
REFERENCES:
patent: 2594405 (1952-03-01), Deters
patent: 3430648 (1969-03-01), Botkin
patent: 4314664 (1982-02-01), Wisyanski
patent: 5052759 (1991-10-01), Tanaka
Kaneko Takeshi
Matuo Akira
Ferensic Denise L.
Kim Joanne
Nabco Ltd.
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