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:
Jul. 28, 2026
Filed:
Dec. 19, 2024
Pratt & Whitney Canada Corp., Longueuil, CA;
Cedric Chan Chuen, Laval, CA;
Hugues Pellerin, Montreal, CA;
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Abstract
A de-aerator includes a de-aerator housing having a fluid inlet through which a mixture of oil and air enters, an air-oil outlet through which mixture of oil and air of lower oil concentration exits, and an oil outlet through which a flow of oil exits. An impeller is positioned in the de-aerator housing and is driven about an impeller axis to separate oil from the mixture of air and oil and direct the oil toward the oil outlet, and a seal is positioned in the de-aerator housing downstream of the impeller. The seal includes a plurality of seal fins extending radially outwardly from an impeller hub of the impeller toward an inner housing surface of the de-aerator housing. The plurality of seal fins define a labyrinth seal with the inner housing surface to minimize an oil outlet oil flow from exiting the de-aerator housing via the air-oil outlet.