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:
Mar. 24, 2026
Filed:
Dec. 19, 2024
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventor:
Hugues Pellerin, Montreal, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C 2/08 (2006.01); B64D 27/10 (2006.01); F04C 2/14 (2006.01); F04C 11/00 (2006.01); F04C 15/00 (2006.01);
U.S. Cl.
CPC ...
F04C 2/084 (2013.01); F04C 2/14 (2013.01); F04C 11/001 (2013.01); F04C 15/0061 (2013.01); F04C 15/0073 (2013.01); B64D 27/10 (2013.01); F04C 2240/60 (2013.01);
Abstract
A gear pump arrangement of an aircraft gas turbine engine is provided. The gear pump arrangement includes an accessory, a quill shaft, two gear pumps in series, axial retention members at the accessory and one of the two gear pumps to axially retain the quill shaft and torque transmitting members (TTMs). The TTMs include a first TTM between the one of the two gear pumps and the quill shaft and a second TTM between the quill shaft and the accessory whereby the quill shaft directly links the one of the two gear pumps to the accessory.