Valve operating mechanism

Details Valve operating mechanism Valve operating mechanism

1994-07-26

1995-03-14

Fox, John C.

Pumps

Motor driven

Fluid motor

13759618, 251 611, 251212, F04B 1700, F16K 3112

Patent

active

053972210

ABSTRACT:
A valve operating mechanism which opens and closes a passage communicating to a cavity by contraction and restoration of a packing, with little mechanical movable parts for the opening/closing operation.

REFERENCES:
patent: 3937440 (1976-02-01), MacGregor et al.
patent: 4085942 (1978-04-01), Yoshida et al.

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