Safety valve with extension springs

Details Safety valve with extension springs Safety valve with extension springs

2004-12-03

2009-10-06

Gay, Jennifer H (Department: 3676)

Wells

Valves, closures or changeable restrictors

Longitudinally movable operator

C166S373000, C166S319000

Reexamination Certificate

active

07597149

ABSTRACT:
A safety valve with extension springs. In a described embodiment, a valve for use in a subterranean well includes a closure member having open and closed positions. A structure displaces to cause the closure member to displace between the open and closed positions. A biasing device has a length which decreases as the structure displaces to cause the closure member to displace toward the closed position.

REFERENCES:
patent: 2064247 (1934-04-01), 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: 5159981 (1992-11-01), Le
patent: 5310005 (1994-05-01), Dollison
patent: 5358053 (1994-10-01), Akkerman
patent: 5411096 (1995-05-01), Akkerman
patent: 5564675 (1996-10-01), Hill, Jr. et al.
patent: 6328062 (2001-12-01), Williams et al.
patent: 6957703 (2005-10-01), Trott et al.
patent: 2003/0000582 (2003-01-01), Jackson
patent: 2003/0155131 (2003-08-01), Vick, Jr.
patent: 2005/0039922 (2005-02-01), Vick et al.
patent: 336323 (1930-10-01), None
patent: 772690 (1957-04-01), None
patent: 811237 (1959-04-01), None
patent: 811237 (1959-04-01), None
patent: 2405165 (2005-02-01), None
Robert Norton, Machine Design: An Integrated Approach, 1996, Prentice Hall, p. 827.
U.K. Search Report for GB0417116.1.
U.S. Appl. No. 10/642,801; filed Aug. 18, 2003.
Baker Oil Tools, “Baker ‘M’ Series Non-Elastomeric Valves” informational publication, undated.
Office Action for U.S. Appl. No. 10/642,801 dated Jul. 18, 2005.
Search Report for PCT/US2005/043099.
Written Opinion for PCT/US2005/043099.
International Preliminary Report on Patentability for PCT/US2005/043099.
Examination Report issued Sep. 19, 2008, for UK Patent Application Serial No. GB0711319.4, 1 page.
International Preliminary Report on Patentability issued Jun. 14, 2007, for International Patent Application Serial No. PCT/US05/43099, 7 pages.
Examination Report issued Apr. 23, 2009, for UK Patent Application Serial No. 0711319.4, 1 page.

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