Linear motion-type gate valve

Details Linear motion-type gate valve Linear motion-type gate valve

2011-03-01

2011-03-01

Fristoe, Jr., John K (Department: 3753)

Valves and valve actuation

Reciprocating valve

Gate

C251S329000

Reexamination Certificate

active

07896313

ABSTRACT:
A gate valve includes a valve plate for opening and closing a gas passageway, and an air cylinder and a shaft for linearly moving the valve plate between a main housing portion and a storage housing portion of a housing, and the air cylinder is arranged on the first lateral surface side of the housing in parallel with a moving direction of the valve plate, and the shaft is arranged so as to overlap with the valve plate in parallel with the moving direction. A tip end of the shaft is coupled with the valve plate at a position situated near a front end portion in the moving direction thereof.

REFERENCES:
patent: 3330530 (1967-07-01), Andrae
patent: 3333814 (1967-08-01), Sargent
patent: 3352535 (1967-11-01), Power
patent: 3722857 (1973-03-01), Townsend
patent: 5101861 (1992-04-01), Deville et al.
patent: 7011294 (2006-03-01), Ehrne et al.
patent: 7662280 (2010-02-01), Cooney
patent: 58-156781 (1983-09-01), None
patent: 4-254071 (1992-09-01), None
patent: 2006-77984 (2006-03-01), None

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