Poppet valve with force feedback control

Details Poppet valve with force feedback control Poppet valve with force feedback control

1993-09-03

1995-06-06

Hepperle, Stephen M.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

1374875, 1374895, F16K 3112

Patent

active

054215455

ABSTRACT:
A force feedback popper valve has a valve element for controlling fluid flow from an inlet port to an outlet port. A meter-in orifice communicates pressurized fluid from the inlet port to a control chamber above the valve element. A pilot valve provides a meter-out orifice between the control chamber and the outlet port to selectively reduce the pressure level in the control chamber in response to a control force applied to the pilot valve. A feedback spring is disposed in the control chamber between the valve element and the pilot valve so that displacement of the valve element is proportional to the control force exerted against the pilot valve.

REFERENCES:
patent: 2755058 (1956-07-01), Margrave
patent: 4585206 (1986-04-01), Itoh
patent: 4848721 (1989-07-01), Chudakov
patent: 5137254 (1992-08-01), Aardema
patent: 5144983 (1992-09-01), Schwelm

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