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. 22, 2023
Filed:
Jul. 06, 2021
Pratt & Whitney Canada Corp., Longueuil, CA;
Felix Gauthier, Longueuil, CA;
Pratt & Whitney Canada Corp., Longueuil, CA;
Abstract
A lubrication system is provided for a turbine engine. A lubricant source includes a source outlet. Feed circuits are fluidly coupled with the source outlet in parallel. The feed circuits include a first feed circuit and a second feed circuit. The second feed circuit includes a pump with a pump inlet and a pump outlet. A bypass circuit is fluidly coupled with the pump inlet and the pump outlet. A bleed circuit is fluidly coupled with the first feed circuit. A flow regulator is configured to regulate flow through the bypass circuit during a first mode of operation and a second mode of operation. The flow regulator is configured to close the bleed circuit during the second mode of operation. A sensor system is configured to monitor fluid flow directed to the first feed circuit and/or the second feed circuit.