Valves and valve actuation – Fluid actuated or retarded – With mechanical movement between actuator and valve
Reexamination Certificate
2006-01-17
2006-01-17
Look, Edward K. (Department: 3751)
Valves and valve actuation
Fluid actuated or retarded
With mechanical movement between actuator and valve
C251S315010, C060S416000
Reexamination Certificate
active
06986499
ABSTRACT:
A valve, actuator and control system that allows minimizing the size of the actuator and operation of the control system in a manual mode that automatically prevents accidental operation by pipeline pressure is disclosed. The actuator uses gas pressure from the pipeline to power the actuator. In the event gas pressure is unavailable, a pair of manual hand pumps are incorporated to allow operation of the actuator and valve.
REFERENCES:
patent: 6231027 (2001-05-01), Baker et al.
patent: 6302128 (2001-10-01), Muchow
patent: 6793194 (2004-09-01), Grinberg
patent: WO 02/37008 (2002-05-01), None
patent: WO 03/025428 (2003-03-01), None
Ard Daryl L.
Arriens Frank J.
Davis Albert S.
Mefford David R.
Saldivar John M.
Conley & Rose, P.C.
Cooper Cameron Corporation
Fristoe Jr. John K.
Look Edward K.
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