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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.:

US 12768284 B1

PDFFull Text
Date of Patent:
Oct. 20, 2026

Filed:

Dec. 04, 2024

Rotor crack detection and mitigation

Applicant:

Pratt & Whitney Canada Corp., Québec, CA;

Inventors:

Dikran Mangardich, Richmond Hill, CA;

Jason Herborth, Acton, CA;

Tom Mcdonough, Barrie, CA;

Assignee:

PRATT & WHITNEY CANADA CORP., Longueuil, CA;

Attorney:

CANTOR COLBURN LLP

Primary Examiner:

Nathaniel E Wiehe

Assistant Examiner:

Theodore C Ribadeneyra

Int. Cl.
CPC ...
F01D 21/06 (2006.01); B64D 27/10 (2006.01); B64D 45/00 (2006.01); F01D 11/00 (2006.01); F01D 21/00 (2006.01); G01M 15/14 (2006.01);
U.S. Cl.
CPC ...
F01D 21/003 (2013.01); B64D 27/10 (2013.01); B64D 45/00 (2013.01); F01D 11/001 (2013.01); F01D 21/06 (2013.01); G01M 15/14 (2013.01); B64D 2045/0085 (2013.01); F05D 2260/80 (2013.01); F05D 2270/09 (2013.01);
Abstract

Gas turbine engines include a rotating component having a disc and defining an axis therethrough. A static component is arranged axially adjacent to the rotating component and includes a primary rub flange that extends axially from the disc of the rotating component toward the static component. The static component includes an interfacing rub flange extending axially from the static component toward the rotating component and is arranged radially adjacent to the primary rub flange. The primary rub flange includes a primary rubbing surface and the interfacing rub flange includes an interfacing rubbing surface with the primary rubbing surface spaced from the interfacing rubbing surface by a separation gap. The primary rub flange is configured to deflect in the presence of a crack in the disc to close the separation gap such that the primary rubbing surface contacts the interfacing rubbing surface.

Find Patent Forward Citations

Mangardich, Dikran. (2026). Rotor crack detection and mitigation (U.S. Patent No. 12768284). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12768284

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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