Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction
Patent
1993-03-05
1994-08-30
Fox, John C.
Valves and valve actuation
With means to increase head and seat contact pressure
With positive reduction
251164, F16K 122
Patent
active
053420284
ABSTRACT:
An expanding valve assembly which includes a closure member supporting at least one segment supported on one side thereof for movement toward a valve seating surface upon movement of the closure member in selective response to valve stem movement. Each segment carries two spaced-apart, parallel wedging-camming surfaces configured to cooperate with complementary spaced-apart, parallel wedging-camming surfaces on the closure member to effect expansion of the segment during closure of the valve. In one embodiment a lift-and-turn mechanism provides selective rotational and axial movement of the closure member during different intervals of movement thereof.
REFERENCES:
patent: 556006 (1896-03-01), Fletcher et al.
patent: 880674 (1908-03-01), Ladd
patent: 1512431 (1924-10-01), Trowe
patent: 1995727 (1935-03-01), Wetherbee
patent: 2383549 (1945-08-01), Hilker
patent: 3477690 (1969-11-01), Murota et al.
patent: 3515371 (1970-06-01), King et al.
patent: 3823911 (1974-07-01), Natho et al.
patent: 4179099 (1979-12-01), Pierce, Jr.
patent: 4188014 (1980-02-01), Alvarez
patent: 4188016 (1980-02-01), Whaley
patent: 4189127 (1980-02-01), Constantino
patent: 4279404 (1981-07-01), Levin
patent: 4291862 (1981-09-01), Alvarez et al.
patent: 4334666 (1982-06-01), Alvarez et al.
patent: 4341369 (1982-07-01), Meyer
patent: 4405113 (1983-09-01), Erwin et al.
patent: 4530488 (1985-07-01), Kemp
patent: 4531710 (1985-07-01), Tort O.
patent: 4623119 (1986-11-01), van der Wiel
Orbit Valve International, Inc.; "Orbit Puts The Lid On Fugitive Emissions."; Circle Reader Response #32.
Fox John C.
McCarthy Bill D.
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