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:
Sep. 21, 2021
Filed:
Feb. 22, 2019
Applicants:
Rolls-royce Plc, London, GB;
Rolls-royce Deutschland Ltd & CO KG, Dahlewitz, DE;
Inventors:
John R Mason, Bristol, GB;
Thomas Philip Astley, Berlin, DE;
Assignees:
ROLLS-ROYCE plc, London, GB;
ROLLS-ROYCE DEUTSCHLAND LTD & CO KG, Dahlewitz, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 25/20 (2006.01); F16H 57/04 (2010.01); F01D 21/14 (2006.01); F02C 7/36 (2006.01); F02C 7/06 (2006.01); F01M 1/18 (2006.01); F01M 1/02 (2006.01); F01M 1/12 (2006.01);
U.S. Cl.
CPC ...
F01D 25/20 (2013.01); F01D 21/14 (2013.01); F01M 1/02 (2013.01); F01M 1/18 (2013.01); F02C 7/06 (2013.01); F02C 7/36 (2013.01); F16H 57/0442 (2013.01); F16H 57/0471 (2013.01); F16H 57/0476 (2013.01); F01M 2001/0215 (2013.01); F01M 2001/123 (2013.01); F05D 2260/40311 (2013.01); F05D 2260/98 (2013.01); F05D 2270/09 (2013.01); F05D 2270/301 (2013.01); F16H 57/048 (2013.01); F16N 2210/02 (2013.01); F16N 2210/14 (2013.01); F16N 2260/20 (2013.01);
Abstract
A method () and apparatus () for lubrication of a gearbox () of an aircraft engine comprise provision () of oil to the gearbox () through a primary oil system () driven by a core () of the engine () in normal conditions; detection () of windmilling conditions and/or failure of the primary oil system (); and in response to the detected condition or failure, activation () of an electric pump () of an auxiliary oil system (), to provide oil to the gearbox ().