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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.:

US 12716387 B1

PDFFull Text
Date of Patent:
Aug. 25, 2026

Filed:

Dec. 09, 2020

Method of operating an aircraft engine and fuel system using multiple fuel types

Applicant:

Pratt & Whitney Canada Corp., Longueuil, CA;

Inventors:

Sean Durand, Brossard, CA;

Harris Shafique, Longueuil, CA;

David Waddleton, Candiac, CA;

Assignee:

PRATT & WHITNEY CANADA CORP., Longueuil, CA;

Attorney:

Norton rose fulbright Canada LLP

Primary Examiner:

Phutthiwat Wongwian

Assistant Examiner:

Jacek undefined Lisowski

Int. Cl.
CPC ...
F02C 7/224 (2006.01); B64D 27/10 (2006.01); B64D 37/30 (2006.01); B64D 37/34 (2006.01);
U.S. Cl.
CPC ...
F02C 7/224 (2013.01); B64D 27/10 (2013.01); B64D 37/30 (2013.01); B64D 37/34 (2013.01); F05D 2220/323 (2013.01); F05D 2240/35 (2013.01);
Abstract

The fuel system can have a jet fuel subsystem having a jet fuel conduit extending from a first reservoir area to a fuel nozzle across an auxiliary system operable using a flow of the jet fuel, at least one fuel delivery system operable to circulate a controlled flow rate of the jet fuel within said conduit and across the auxiliary system, a recirculation conduit branching off from the jet fuel conduit downstream of the auxiliary system, an actuator valve operable to selectively direct a flow of jet fuel to the at least one fuel nozzle or to the recirculation conduit; and an alternative fuel subsystem having an alternative fuel conduit extending from a second reservoir area to a fuel nozzle.

Find Patent Forward Citations

Durand, Sean. (2026). Method of operating an aircraft engine and fuel system using multiple fuel types (U.S. Patent No. 12716387). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12716387

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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