Locking valve and flow control valve assembly

Details Locking valve and flow control valve assembly Locking valve and flow control valve assembly

1990-09-25

1992-01-21

Michalsky, Gerald A.

Motors: expansible chamber type

With motive fluid valve

Contracting chamber exhaust valve controlled by expanding...

91443, 91447, F15B 1304

Patent

active

050819046

ABSTRACT:
A locking valve for selectively locking fluid pressure in a fluid cylinder in the event of failure of the source of fluid pressure to the cylinder and including an integral fluid flow control valve, the locking valve also including a fluid pressure seal between the fluid supply port and the pilot port of the locking valve to prevent back pressure on the pilot pressure operated valve components.

REFERENCES:
patent: 2959188 (1960-11-01), Kepner
patent: 3229721 (1966-01-01), Bingel
patent: 3335750 (1967-08-01), Kepner
patent: 3792715 (1974-02-01), Parrett et al.
patent: 3817154 (1974-06-01), Martin
patent: 3975987 (1976-08-01), Panis
patent: 3980336 (1976-09-01), Bitonti
patent: 4018136 (1977-04-01), Kaetterhenry
patent: 4073311 (1978-02-01), McGeachy
patent: 4103699 (1978-08-01), Vik
patent: 4171007 (1979-10-01), Bouteille
patent: 4172582 (1979-10-01), Bobnar
patent: 4192338 (1980-03-01), Gerulis
patent: 4287812 (1981-09-01), Iizumi
patent: 4531449 (1985-07-01), Reith
patent: 4624445 (1986-11-01), Putnam
patent: 4742849 (1988-05-01), Prudhomme et al.
patent: 4838306 (1989-06-01), Horn et al.
Hydraulic and Pneumatic Check and Relief Check Valves author, Kepner Products Company, 995 N. Ellsworth Avenue Villa Park, IL 60181.

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