Dual input pressure compensated fluid control valve

Details Dual input pressure compensated fluid control valve Dual input pressure compensated fluid control valve

1981-08-20

1984-03-20

Michalsky, Gerald A.

Motors: expansible chamber type

With motive fluid valve

Relatively movable serial valves

91421, 1375961, 13759613, 251133, F15B 1304

Patent

active

044373880

ABSTRACT:
A dual input direction flow control valve responsive to a manual or an electrical control signal for control of positive and negative loads operated by a single pilot valve stage, which automatically maintains a relatively constant pressure differential across valve spool, while controlling positive and negative loads and which permits variation in the level of pressure differential in response to a pulse type control signal, while this pressure differential is maintained constant at each controlled level.

REFERENCES:
patent: Re29538 (1978-02-01), Budzich
patent: 3488030 (1970-01-01), Hulme et al.
patent: 3756282 (1973-09-01), Knutson
patent: 3839662 (1974-10-01), N'Guyen Van
patent: 4031811 (1977-06-01), Inaba et al.
patent: 4145956 (1979-03-01), Rumrill et al.
patent: 4190081 (1980-02-01), Coles
patent: 4235156 (1980-11-01), Olsen
patent: 4327627 (1982-05-01), Budzich
patent: 4333389 (1982-06-01), Budzich

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