High volume poppet valve with orifice opening speed control

Details High volume poppet valve with orifice opening speed control High volume poppet valve with orifice opening speed control

1978-10-30

1981-09-22

Cohen, Irwin C.

Motors: expansible chamber type

With motive fluid valve

Pilot valve

73837, 91 5, 251 25, 251 48, F15B 13042, F16K 31122

Patent

active

042903432

ABSTRACT:
A high volume valve for controlling flow of fluid from a source of fluid under pressure, such as in an accumulator, to an actuator used for testing specimens under high rates of loading. The valve includes a poppet type valve piston that is normally held in a closed position by hydraulic pressure behind the poppet, and when the pressure holding the poppet closed is released, the main supply of fluid under pressure acts on the poppet to open it very quickly. A second accumulator open to the opposite side of the poppet from the main source of pressure is utilized for controlling speed of opening of the valve. The amount the poppet opens also can be adjusted for controlling the rate of flow of fluid from the main source of pressure to the actuator.

REFERENCES:
patent: 2587539 (1952-02-01), Seaman
patent: 2815008 (1957-12-01), Hirt
patent: 2911005 (1959-11-01), Adelson
patent: 3282283 (1966-11-01), Takeda
patent: 3434393 (1969-03-01), Cairatti
patent: 3980002 (1976-09-01), Jarman et al.
patent: 4007667 (1977-02-01), Elias et al.
patent: 4093002 (1978-06-01), Tardy

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