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:
Mar. 30, 2021
Filed:
May. 18, 2020
Applicant:
Raytheon Technologies Corporation, Farmington, CT (US);
Inventors:
Thomas Bruce Avis, Manchester, CT (US);
Francis Parnin, Suffield, CT (US);
Assignee:
RAYTHEON TECHNOLOGIES CORPORATION, Waltham, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 25/20 (2006.01); F16N 7/02 (2006.01); F01M 1/02 (2006.01); F16N 29/02 (2006.01); F16N 7/40 (2006.01); F01M 1/12 (2006.01);
U.S. Cl.
CPC ...
F01D 25/20 (2013.01); F01M 1/02 (2013.01); F01M 1/12 (2013.01); F16N 7/02 (2013.01); F16N 7/40 (2013.01); F16N 29/02 (2013.01); F05D 2260/98 (2013.01); F16N 2210/02 (2013.01); F16N 2210/14 (2013.01); F16N 2260/06 (2013.01); Y02T 50/60 (2013.01);
Abstract
A method of operating a lubrication system for a gas turbine engine includes pumping a lubricant from a supply conduit to a bearing compartment. A pressure differential in the bearing compartment. The supply conduit is evacuated in response to the pressure differential creating step. The supply conduit is refilled with the lubricant from a reservoir conduit fluidly joined to the supply conduit at a junction by gravitationally draining the reservoir conduit.