Power plants – Pressure fluid source and motor – Condition responsive control of motive fluid flow
Reexamination Certificate
2006-02-28
2006-02-28
Lopez, F. Daniel (Department: 3745)
Power plants
Pressure fluid source and motor
Condition responsive control of motive fluid flow
C091S437000, C091S447000, C137S596150, C137S596160
Reexamination Certificate
active
07003949
ABSTRACT:
An integrated three function valve (ITFV) that combines the functions of a bypass valve (e.g.183a,185a,161a) into a single assembly is disclosed. The ITFV allows continued operation after any two failures. With the integrated three function valve, no combination of electrical or hydraulic component failures, regardless of expected failure rate, will prevent an actuator from continued safe operation
REFERENCES:
patent: 4009642 (1977-03-01), Vanderlaan
patent: 4150686 (1979-04-01), El Sherif et al.
patent: 4870819 (1989-10-01), Walzer
patent: 5493861 (1996-02-01), Friedrichsen
Curd David A.
Fenny Carlos A.
Price Ian L.
Schultz David P.
Bell Helicopter Textron Inc.
Lopez F. Daniel
Walton James E.
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