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:
May. 12, 2026
Filed:
Sep. 09, 2024
Pratt & Whitney Canada Corp., Longueuil, CA;
Daniel Van Den Ende, Mississauga, CA;
Dave Menheere, Norval, CA;
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Abstract
An aircraft engine, has: a compressor, a combustor downstream of the compressor, and a turbine; a recuperator having a heat absorption conduit fluidly connecting the compressor to the combustor and a exhaust conduit fluidly connecting the turbine to ambient air surrounding the aircraft engine, the heat absorption conduit in heat exchange relationship with the exhaust conduit; a compressor conduit fluidly connecting the compressor to the heat absorption conduit of the recuperator, the compressor conduit defining a bypass outlet upstream of the recuperator relative to the flow of the compressed air; and a closure at the bypass outlet, the closure having: a closed position in which the closure closes the bypass outlet; and an opened position in which the closure opens the bypass outlet, wherein the closure is structured to move from the closed position to the opened position upon a pressure drop through the recuperator exceeding a pressure drop threshold.