Gate valve device

Details Gate valve device Gate valve device

1995-06-07

1996-10-22

Bennett, Henry A.

Valves and valve actuation

With means to increase head and seat contact pressure

251193, F16K 2500

Patent

active

055669220

ABSTRACT:
A gate valve device which includes a partition wall having an opening, a valve member movable along the partition wall to open or close the opening, a driving system for moving the valve member, and a pressing mechanism for pressing the valve member toward the partition wall. The pressing mechanism has a pressing member projectable toward and retractable from the valve member, wherein the pressing mechanism presses the valve member against the partition wall when the valve member is in a position closing the opening.

REFERENCES:
patent: 2666539 (1954-01-01), Avery
patent: 3170668 (1965-02-01), Anlisa
patent: 3789875 (1974-02-01), Mchee
patent: 4062515 (1977-12-01), Bobo
patent: 4313815 (1982-02-01), Graves, Jr. et al.
patent: 4550742 (1985-11-01), Stearns

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