Gate valve

Details Gate valve Gate valve

1995-06-02

1997-04-08

Fox, John C.

Valves and valve actuation

Pivoted valves

Gate

2512505, F16K 300

Patent

active

056180276

ABSTRACT:
A valve comprising a gate closure member which is actuated by a stem that is operatively connected with the valve operator handle at the upper end of the stem and the lower end of the stem connected to a toothed pinion engaging an arcuate toothed rack on the gate thereby rotating the gate, or to a toothed pinion engaging a linearly straight toothed rack on the gate thereby reciprocating the gate across the fluid flow-path in a direction transverse to the stem axis, an when the closure member is a tapered wedge gate, the stem is operatively connected with the valve operator handle by means of a Lift-and-Turn mechanism.

REFERENCES:
patent: 1695014 (1928-12-01), Heggem
patent: 2263617 (1941-11-01), Daniel
patent: 2707488 (1955-05-01), Overdijk
patent: 2883147 (1959-04-01), Mirza et al.
patent: 3123334 (1964-03-01), Hitz
patent: 3404864 (1968-10-01), Reddy
patent: 4253485 (1981-03-01), Legille
patent: 4962911 (1990-10-01), Soderberg

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