Boost valve device

Details Boost valve device Boost valve device

1976-10-22

1978-03-28

Cohen, Irwin C.

Motors: expansible chamber type

With motive fluid valve

Inlet fluid supplemented by controlled fluid pressurized in...

137596, F15B 1108, F15B 13042

Patent

active

040808726

ABSTRACT:
A boost valve device is described which comprises a valve body formed therein with three check valves and hydraulic circuit including the check valves, which circuit functions to recirculate oil discharged from one side of a cylinder during no load operation to the other side of the cylinder to thereby boost the operation velocity of the cylinder under no load operation and to return the discharge oil to an oil tank during load operation. The valve body has an upper surface provided with ports corresponding to ports of a directional control valve and a lower surface provided with ports corresponding to ports of a manifold and is sandwiched between the directional control valve and the manifold with the ports in alignment.

REFERENCES:
patent: 2232514 (1941-04-01), Day
patent: 2267284 (1941-12-01), Livers
patent: 2367682 (1945-01-01), Kehle
patent: 2887990 (1959-05-01), Rogers
patent: 3071926 (1963-01-01), Olson et al.
patent: 3133559 (1964-05-01), Tennis
patent: 3299902 (1967-01-01), Williams
patent: 3530883 (1970-09-01), Kramer

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