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:
Jun. 01, 2021
Filed:
Nov. 01, 2019
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventor:
Simon Cartier, St-Bruno de Montarville, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 25/16 (2006.01); F16C 25/08 (2006.01); F16C 33/66 (2006.01); F16C 19/08 (2006.01); F16C 19/18 (2006.01);
U.S. Cl.
CPC ...
F01D 25/162 (2013.01); F16C 19/08 (2013.01); F16C 19/182 (2013.01); F16C 25/083 (2013.01); F05D 2220/323 (2013.01); F05D 2240/52 (2013.01); F05D 2240/54 (2013.01); F05D 2270/093 (2013.01); F16C 33/6637 (2013.01); Y10T 29/49904 (2015.01);
Abstract
A method of operating a gas turbine engine of a multi-engine aircraft is disclosed, where the gas turbine engine has an engine shaft mounted for rotation in a bearing of a bearing assembly. The method comprises limiting motive power supplied to the aircraft by the gas turbine engine by operating the gas turbine engine in a standby mode; and when the gas turbine engine is operating in the standby mode, using an oil piston integrated in the bearing supporting the engine shaft of the gas turbine engine to generate an axial preload force on the bearing.