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. 13, 2026
Filed:
Dec. 18, 2024
Pratt & Whitney Canada Corp., Longueuil, CA;
Ivan Sidorovich Paradiso, Toronto, CA;
Daniel Alecu, Ottawa, CA;
PRATT & WHITNEY CANADA CORP., Québec, CA;
Abstract
Gas turbine engines include an engine core having compressor, combustor, and turbine sections arranged within an engine casing. A transfer tube is arranged on an exterior of the casing and configured to define a fluid conduit for fluid to be transferred about the engine. A fitting is connected to the transfer tube and a seal assembly is arranged between the fitting and the transfer tube. The seal assembly provides a fluid seal between the fluid conduit and an ambient environment at a connection between the fitting and the transfer tube. The seal assembly includes a primary seal arranged in a gap between the fitting and the transfer tube and a secondary seal arranged in the gap between the primary seal and an ambient environment. The secondary seal is configured to expand into engagement with the fitting and the transfer tube when exposed to temperatures of at least 800° F.