Metered lockout valve

Details Metered lockout valve Metered lockout valve

1982-10-22

1985-10-08

Cohen, Irwin C.

Motors: expansible chamber type

With motive fluid valve

Contracting chamber exhaust valve controlled by expanding...

91445, F15B 1108, F15B 13042

Patent

active

045452873

ABSTRACT:
A metering lockout check valve which lowers gravity loads without chatter. The poppet has a conical concave face which surrounds an annular seat and is shaped so that as the poppet opens, the effective closing force increases requiring higher pressures in the opposite motor port to open the poppet. Conversely an overrun condition is prevented since when the pressure drops in the pump pressure side of the circuit, the poppet will reduce its opening and provide a metering function.

REFERENCES:
patent: 3049101 (1962-08-01), Ruhl
patent: 3217740 (1965-11-01), Vick
patent: 3583431 (1971-06-01), Diel
patent: 3596566 (1971-08-01), Krehbiel et al.
patent: 4361075 (1982-11-01), Block

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