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:
Feb. 24, 2026
Filed:
Oct. 15, 2024
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventor:
Ian Macfarlane, St-Bruno, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 25/16 (2006.01); F01D 25/24 (2006.01); F16C 27/04 (2006.01);
U.S. Cl.
CPC ...
F01D 25/162 (2013.01); F01D 25/24 (2013.01); F16C 27/045 (2013.01); F05D 2240/50 (2013.01); F16C 2360/23 (2013.01);
Abstract
A gas turbine engine of an aircraft is provided. The gas turbine engine includes a shaft, a housing and an auxiliary ball bearing assembly to rotatably support the shaft within the housing. The auxiliary ball bearing assembly includes inner and outer races, ball bearings between the inner and outer races, an axial spring anchored between the housing and the outer race to prevent axial movement of the shaft during overhaul and an oil cavity defined between the housing and the outer race for axial damping during the overhaul and for radial damping during operational conditions.