High vacuum gate valve

Details High vacuum gate valve High vacuum gate valve

1974-03-18

1976-08-10

Schwadron, Martin P.

Valves and valve actuation

With means to increase head and seat contact pressure

Gate valve

251301, 251368, 251300, F16K 304, F16K 3100

Patent

active

039737535

ABSTRACT:
Gate valve having a closure member mounted on a swinging arm pivotally mounted for movement transversely of the axis of the valve openings. A wedge member carried by the arm drives the closure member in a direction parallel to the axis of the openings when moved longitudinally of the arm. An actuator pivots a cam which bears against the wedge member to swing the arm to a predetermined position in which the closure member is aligned with the openings and thereafter to move the cam to drive the closure member axially and seal one of the openings. Resilient members urge the closure member toward its retracted position and prevent the wedge member from moving forward until the arm reaches the predetermined position.

REFERENCES:
patent: 2676780 (1954-04-01), Wheatley
patent: 2718235 (1955-09-01), Galbreath et al.
patent: 3191381 (1965-06-01), Lerwick et al.
patent: 3237916 (1966-03-01), Bryant
patent: 3343562 (1967-09-01), Combes
patent: 3352535 (1967-11-01), Power
patent: 3489171 (1970-01-01), Michael, Jr. et al.
patent: 3521665 (1970-07-01), Poulsen
patent: 3554486 (1971-01-01), Thebado

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