Expansible device

Details Expansible device Expansible device

1979-01-26

1981-10-20

Weakley, Harold W.

Valves and valve actuation

With means to increase head and seat contact pressure

Seat pressed to valve

92 50, 92103M, 188366, 188 724, 192 85A, 192 88A, 251173, F16K 2500

Patent

active

042956331

ABSTRACT:
An expansible device for exerting force which has a generally "S" shape cross-section, being formed by stepped diameter cylinder, and arrangements using such a device are disclosed. The device may exert sealing forces and be controlled by admission of fluid pressure which acts on a thin wall member so supported as to be subjected to compressive stress alone.

REFERENCES:
patent: 1157793 (1915-10-01), Metten
patent: 2793058 (1957-05-01), Jacobson
patent: 2799470 (1957-07-01), Margrave
patent: 2970802 (1961-02-01), Ocampo
patent: 3112095 (1963-11-01), Batzer
patent: 3216695 (1965-11-01), Bartholet
patent: 3472062 (1969-10-01), Owen
patent: 3680982 (1972-08-01), Jacobellis
patent: 3995723 (1976-12-01), Holcomb
patent: 4026514 (1977-05-01), Sumner

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