Pressure regulating servovalve

Details Pressure regulating servovalve Pressure regulating servovalve

1995-01-18

1996-07-09

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

13762564, 251 50, F15B 13043

Patent

active

055335519

ABSTRACT:
It comprises a distributor body having an output port, a feed port and a return port, and a slider adapted to slide inside the distributor body between a first position isolating the output port from the feed and return ports, a second position connecting the output port to the feed port and a third position connecting the output port to the return port. The slider co-operates with the distributor body to define two pilot chambers fed with a pilot fluid, an output chamber is connected to the output port by an output passage, and a damper chamber in the distributor body includes mechanical means for reducing its hydraulic stiffness and connected to the output port via a damper passage including a calibrated orifice.

REFERENCES:
patent: 3286734 (1966-11-01), Hartshorne
patent: 3443594 (1969-05-01), Frayer
patent: 3856047 (1974-12-01), Takayama
patent: 3983908 (1976-10-01), Bartholomaeus
patent: 4316599 (1982-02-01), Bouvet et al.
patent: 4321941 (1982-03-01), Hunschede et al.

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