Collet biasing device for valve actuator

Details Collet biasing device for valve actuator Collet biasing device for valve actuator

2006-10-27

2010-02-16

Fristoe, Jr., John K (Department: 3753)

Valves and valve actuation

Fluid actuated or retarded

With mechanical movement between actuator and valve

C251S062000, C251S231000, C251S242000

Reexamination Certificate

active

07661650

ABSTRACT:
A valve actuator comprises a housing, a lever, a collet, and a biasing device. The lever is disposed within the housing and is adapted to be operatively coupled to rotate the valve shaft. The collet is carried by the lever and adapted to couple the lever to the valve shaft. The biasing device comprising a spring operatively coupled to the collet to bias the lever into a predetermined position.

REFERENCES:
patent: 3727837 (1973-04-01), Gazzera et al.
patent: 3985151 (1976-10-01), Smith
patent: 5176464 (1993-01-01), Tanner
patent: 5924671 (1999-07-01), Baumann
patent: 6062534 (2000-05-01), Eggleston
patent: 6076799 (2000-06-01), Baumann
patent: 6857448 (2005-02-01), Schwartzman
patent: 2 136 541 (1984-09-01), None
patent: WO-2005/124211 (2005-12-01), None
Written Opinion and International Search Report for PCT/US2007/079551, dated May 3, 2008.

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