Power plants – Combustion products used as motive fluid – Combined with regulation of power output feature
Reexamination Certificate
2007-06-04
2010-11-23
Cuff, Michael (Department: 3741)
Power plants
Combustion products used as motive fluid
Combined with regulation of power output feature
C060S734000
Reexamination Certificate
active
07836676
ABSTRACT:
A system allows a user to manually manipulate fuel flow to a gas turbine engine during a loss of power to the fuel supply system fuel metering unit. The fuel metering unit includes a fuel metering valve, a metering valve actuator, a fail-fixed valve, a flow increase valve, and a flow decrease valve. The fuel metering unit is configured such that, upon electrical power interruption to the metering valve actuator, the fail-fixed valve shifts and provides a hydraulic lock on the fuel metering valve, to thereby maintain its position. The flow increase and flow decrease valves are powered from a power source that is independent of that used to power the fuel metering unit and, when appropriately energized will allow movement of the fuel metering valve.
REFERENCES:
patent: 3753350 (1973-08-01), Nott
patent: 4033112 (1977-07-01), Schuster
patent: 4248040 (1981-02-01), Kast
patent: 4270345 (1981-06-01), Kast
patent: 4276809 (1981-07-01), Kast
patent: 4344281 (1982-08-01), Schuster et al.
patent: 4375780 (1983-03-01), Davis
patent: 4470337 (1984-09-01), Kast
patent: 4608820 (1986-09-01), White et al.
patent: 4718229 (1988-01-01), Riley
patent: 5088278 (1992-02-01), Smith et al.
patent: 5235806 (1993-08-01), Pickard
patent: 5403155 (1995-04-01), Head et al.
patent: 5490379 (1996-02-01), Wernberg et al.
patent: 5555720 (1996-09-01), Wernberg et al.
patent: 5709079 (1998-01-01), Smith
patent: 5735122 (1998-04-01), Gibbons
patent: 5784884 (1998-07-01), Poerio et al.
patent: 6205766 (2001-03-01), Dixon et al.
patent: 6401446 (2002-06-01), Gibbons
patent: 6715278 (2004-04-01), Demers
patent: 6912837 (2005-07-01), Demers
patent: 7191054 (2007-03-01), Machida
patent: 2005/0022498 (2005-02-01), Futa, Jr. et al.
patent: 2005/0072160 (2005-04-01), Futa et al.
patent: 2005/0217235 (2005-10-01), Zielinski et al.
patent: 2007/0199314 (2007-08-01), Futa et al.
patent: 2007/0234732 (2007-10-01), Shelby et al.
Futa, P.W.; Wieger, G.S.; Lewis, S.A.; Lafferty, G.A.; Van Oosterum, J.C.; System For Positioning A Piston Including A Fail Fixed Valve For Holding The Piston In Position During A Power Interruption And Method Of Using Same; filed Feb. 28, 2006.
Futa, Jr. Paul W.
Lafferty Gregory A.
Cuff Michael
Honeywell International , Inc.
Ingrassia Fisher & Lorenz P.C.
Wongwian Phutthiwat
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