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:
Aug. 12, 2025
Filed:
Apr. 29, 2022
Pratt & Whitney Canada Corp., Longueuil, CA;
Krishna Prasad Balike, Brampton, CA;
Edwin Wong, North York, CA;
Daniel Fudge, Vaughan, CA;
Ignatius Theratil, Mississauga, CA;
Paul Stone, Guelph, CA;
Charles Mason, Milton, CA;
Karan Anand, Mississauga, CA;
Pascal Doran, Montreal, CA;
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Abstract
A method includes: obtaining a rotor having a hub and a plurality of blades protruding from the hub, the plurality of blades including first blades and second blades disposed in alternation around a central axis of the rotor, natural vibration frequencies of the first blades different from natural vibration frequencies of the second blades; determining that a difference between a first natural vibration frequency of a first blade of the first blades and a second natural vibration frequency of a second blade of the second blades is below a threshold; and modifying a shape of the first blade until the difference between the first natural vibration frequency and the second natural vibration frequency is at or above the threshold.