The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 2015
Filed:
Jun. 06, 2012
Larry Portolese, Granger, IN (US);
Gregory Kline, South Bend, IN (US);
Paul W. Futa, North Liberty, IN (US);
David Tuttle, South Bend, IN (US);
Brad Mcroberts, Mishawaka, IN (US);
Greg Lafferty, Plymouth, IN (US);
Larry Portolese, Granger, IN (US);
Gregory Kline, South Bend, IN (US);
Paul W. Futa, North Liberty, IN (US);
David Tuttle, South Bend, IN (US);
Brad McRoberts, Mishawaka, IN (US);
Greg Lafferty, Plymouth, IN (US);
HONEYWELL INTERNATIONAL INC., Morristown, NJ (US);
Abstract
A system provides 'fail fixed' functionality and allows a user to manually manipulate fuel flow to a gas turbine engine in the unlikely event the primary control means is unavailable. The fuel metering unit includes a fuel metering valve, a flow increase valve, and a flow decrease valve. The flow increase valve and flow decrease valves are both in fluid communication with the fuel metering valve and are each adapted to selectively receive fuel flow commands from a primary fuel flow command source and from a secondary fuel flow command source. The flow increase and decrease valves are responsive to the fuel flow commands to selectively control the position of the fuel metering valve.