Bleeder valve assembly

Details Bleeder valve assembly Bleeder valve assembly

1988-04-07

1990-02-13

Walton, George L.

Valves and valve actuation

Fluid actuated or retarded

With mechanical movement between actuator and valve

251 75, 251229, 251279, 251299, 74471R, 74470, F16K 31122

Patent

active

048999792

ABSTRACT:
A valve assembly has a valve lid assembly which can be fitted in sealing relation on a valve seat, an over-center device can serve to force the lid on to the seat; a drive shaft connected to the lid assembly and drive means for rotating the shaft to open and close the valve seat, the over-center device serving to oppose rotation of the shaft up to a critical position whereupon the device assists in rotation of the shaft to open the valve seat.

REFERENCES:
patent: 914744 (1909-03-01), McDowell
patent: 1295638 (1919-02-01), Triggs
patent: 1357960 (1920-11-01), Cruse
patent: 1926513 (1933-09-01), Clamer
patent: 2121707 (1938-06-01), McGee
patent: 2238814 (1941-04-01), Kneass, Jr.
patent: 2488125 (1949-11-01), Hungate
patent: 2814310 (1957-11-01), Lower
patent: 2850259 (1958-09-01), Larson
patent: 3037737 (1962-06-01), Konemund et al.
patent: 3277794 (1966-10-01), Diolot
patent: 4103495 (1978-08-01), Graham
patent: 4158367 (1979-06-01), Mailliet
patent: 4280681 (1981-07-01), Harris
patent: 4288060 (1981-09-01), Mittell
patent: 4573661 (1986-03-01), Chapman

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