Safety valve having extension spring closure mechanism

Details Safety valve having extension spring closure mechanism Safety valve having extension spring closure mechanism

2006-04-04

2006-04-04

Dang, Hoang (Department: 3672)

Wells

Valves, closures or changeable restrictors

Longitudinally movable operator

C137S527000

Reexamination Certificate

active

07021386

ABSTRACT:
A safety valve having an extension spring closure mechanism. In a described embodiment, a valve for use in a subterranean well is provided which includes a biasing device and a closure member having open and closed positions. The biasing device has a length which decreases as the closure member displaces toward the closed position. The biasing device may be an extension spring.

REFERENCES:
patent: 2064247 (1936-12-01), Evans
patent: 2711755 (1955-06-01), Owen
patent: 2780290 (1957-02-01), Natho
patent: 3356145 (1967-12-01), Fredd
patent: 4128106 (1978-12-01), Abercrombie
patent: 4340088 (1982-07-01), Geisow
patent: 4411316 (1983-10-01), Carmody
patent: 5137090 (1992-08-01), Hare et al.
patent: 5145005 (1992-09-01), Dollison
patent: 5159981 (1992-11-01), Le
patent: 5310005 (1994-05-01), Dollison
patent: 5564675 (1996-10-01), Hill, Jr. et al.
patent: 6196261 (2001-03-01), Dennistoun
patent: 6227299 (2001-05-01), Dennistoun
patent: 2003/0000582 (2003-01-01), Jackson
patent: 2003/0155131 (2003-08-01), Vick, Jr.
patent: 336323 (1930-10-01), None
patent: 772690 (1957-04-01), None
patent: 811237 (1959-04-01), None
U.K. Search Report for GB0417116.1.
Baker Oil Tools, “Baker ‘M’ Series Non-Elastomeric Valves” informational publication, undated.

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