Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Patent
1989-04-14
1990-09-18
Hepperle, Stephen M.
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
303 962, G05D 1604
Patent
active
049571400
ABSTRACT:
In a hydraulic pressure control valve for use with a brake master cylinder, a hollow body of one-piece structure has an internal stepped bore through which outlet and inlet bores formed respectively in one and other ends of the body communicate with each other. A mounting portion to the master cylinder is provided adjacent the other end of the body. A piston is arranged in the stepped bore for reciprocative movement therealong in response to hydraulic pressure from the master cylinder. One end of the piston remote from the outlet bore has an end face serving as a valve seat. A substantially tubular cap element is arranged in the inlet bore and supports the one end of the piston. The cap element is fixed to the body by fixing arrangement which is accompanied with no relative rotation between the cap element and the body. A valve element arranged in a valve chamber defined by the cap element is normally spaced away from the valve seat, but is seated thereon when the hydraulic pressure reaches a predetermined level to move the piston toward the valve element.
REFERENCES:
patent: 3945686 (1976-03-01), Orzel
patent: 3964795 (1976-06-01), Mathues
patent: 4669268 (1987-06-01), Takeuchi et al.
patent: 4785847 (1988-11-01), Steer et al.
Hepperle Stephen M.
Nippon Air Brake Co., Ltd.
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