Valve assembly including a torsion spring coupling a valve...

Details Valve assembly including a torsion spring coupling a valve... Valve assembly including a torsion spring coupling a valve...

2006-08-09

2010-06-22

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

Valves and valve actuation

Rotary valves

Butterfly

C251S305000, C251S337000, C251S077000

Reexamination Certificate

active

07740228

ABSTRACT:
A valve assembly comprises a flow control valve including a valve shaft, an electrical actuator comprising an actuator output shaft, and a torsion spring coupling the valve shaft and the actuator output shaft.

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patent: 1505281 (2005-02-01), None
European Search Report - EP 07 25 2707 - dated Nov. 7, 2007, 6 pages.

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