Valves and valve actuation – Fluid actuated or retarded – Fluid and non-fluid actuators
Reexamination Certificate
2005-03-01
2005-03-01
Hirsch, Paul J. (Department: 3753)
Valves and valve actuation
Fluid actuated or retarded
Fluid and non-fluid actuators
C251S031000
Reexamination Certificate
active
06860464
ABSTRACT:
A valve actuator assembly is provided for selectively opening and closing a valve. The valve actuator assembly includes a primary motor and secondary motor both operatively coupled to an output shaft and adapted to receive valve position commands and operable, in response thereto, to selectively drive the output shaft in a valve open or close direction and a tertiary motor adapted to receive a flow of pressurized air and operable, in response thereto, to drive the output shaft in a valve close direction.
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Bennett Donald D.
Bergin Thomas F.
Forrest Steven T.
Louis Ronald J.
Quitmeyer James N.
Hirsch Paul J.
Honeywell International , Inc.
Mullen, Esq. Douglas A.
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