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:
Jan. 04, 2022
Filed:
Feb. 13, 2020
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventor:
Paul Stone, Guelph, CA;
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 5/02 (2006.01); B23P 15/02 (2006.01);
U.S. Cl.
CPC ...
F01D 5/027 (2013.01); B23P 15/02 (2013.01); F05D 2220/32 (2013.01); F05D 2230/10 (2013.01); F05D 2260/15 (2013.01); Y10T 29/49336 (2015.01);
Abstract
A method of balancing a gas turbine engine rotor comprises the step of obtaining a rotor disc with a circumferential array of balance tabs projecting from a peripheral rim of the disc. Stress shielding scallops are defined in the rotor disc between the tabs. The balancing is achieved by removing material from at least one of the tabs.