Operator for a gate valve

Details Operator for a gate valve Operator for a gate valve

1980-03-27

1981-06-30

Schwadron, Martin P.

Valves and valve actuation

Mechanical movement actuator

Gear

74 30, 251329, F16K 3154

Patent

active

042758661

ABSTRACT:
A dual legged pedestal extending upwardly from the chest of a gate valve rotatably supports a pinion gear. The pinion gear, including a shaft having one end extending penetrably lateral to a leg of the pedestal, is in mesh with a rack affixed to the top of the rectilinearly translatable gate. A detachable tool is engageable with the extending end of the shaft for imparting rotary motion thereto resulting in translation of the rack. A combined spacer and thrust member adds rigidity to the legs of the pedestal and maintains the rack in mesh with the pinion gear.

REFERENCES:
patent: 542238 (1895-07-01), Brown
patent: 886208 (1908-04-01), Hadley
patent: 1028497 (1912-06-01), Schmid et al.
patent: 1497946 (1924-06-01), Schmidt
patent: 1654093 (1927-12-01), Reid
patent: 1801237 (1931-04-01), Hanson
patent: 2055347 (1936-09-01), Hackman
patent: 2150813 (1939-03-01), Ball
patent: 2223702 (1940-12-01), Penick et al.
patent: 2297597 (1942-09-01), White
patent: 2730130 (1956-01-01), Guidry
patent: 2753889 (1956-07-01), Carr et al.
patent: 3034371 (1962-05-01), Cantalupo et al.
patent: 3230781 (1966-01-01), Dubilier
patent: 3473397 (1969-10-01), Fry
patent: 4231389 (1980-11-01), Still et al.

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