Valve assembly

Details Valve assembly Valve assembly

2006-03-28

2006-03-28

Walczak, David J. (Department: 3751)

Valves and valve actuation

Lost motion between actuator and valve

C251S129110, C251S248000

Reexamination Certificate

active

07017882

ABSTRACT:
A valve assembly includes a valve stem which is connected with a valve. A drive member is disposed in engagement with the valve stem. A gear assembly is operable to rotate the drive member to effect axial movement of the valve stem. The gear assembly is driven by an electrical motor. In the event of a power failure, the valve may be moved to a closed condition by either a return spring or an auxiliary source of electrical energy. To facilitate movement of the valve between the open and closed conditions, the valve is pressure balanced.

REFERENCES:
patent: 2906143 (1959-09-01), Musser
patent: 3604287 (1971-09-01), Humphreys
patent: 3640140 (1972-02-01), Gulick et al.
patent: 3808895 (1974-05-01), Fitzwater
patent: 3889924 (1975-06-01), Karpenko
patent: 4114469 (1978-09-01), Stratienko
patent: 4619156 (1986-10-01), Kiryu
patent: 4823638 (1989-04-01), Ishikawa
patent: 4906881 (1990-03-01), Knight
patent: 5195721 (1993-03-01), Akkerman
patent: 5338993 (1994-08-01), Briggs et al.
patent: 6488260 (2002-12-01), Dietz
patent: 6769665 (2004-08-01), Silva et al.

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