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:
Jun. 17, 2025
Filed:
Jun. 14, 2022
Pratt & Whitney Canada Corp., Longueuil, CA;
Laslo Diosady, Etobicoke, CA;
Daniel Alecu, Brampton, CA;
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Abstract
Blowdown valves and associated methods for separating oil and air in a lubrication system of an aircraft engine are provided. A method includes receiving a mixture of air and oil at a blowdown valve including a valve member movable between a valve-closed position and a valve-open position. With the valve member in the valve-open position, the method includes impinging the mixture against the valve member. A first portion of the mixture having a first fraction of oil is released from the blowdown valve upstream of the valve member. A second portion of the mixture having a second fraction of oil greater than the first fraction of oil is guided around and past the valve member. The second portion of the mixture is released from the blowdown valve downstream of the valve member.