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:
Apr. 26, 2022
Filed:
Apr. 02, 2019
Applicant:
Rolls-royce Plc, London, GB;
Inventor:
Neil J. Davies, Ashbourne, GB;
Assignee:
ROLLS-ROYCE PLC, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 25/20 (2006.01); F16H 57/04 (2010.01); F01M 1/02 (2006.01); F02C 7/36 (2006.01); F02K 3/06 (2006.01); F16N 7/16 (2006.01); F16N 7/40 (2006.01); F16N 29/02 (2006.01);
U.S. Cl.
CPC ...
F16H 57/0442 (2013.01); F01D 25/20 (2013.01); F01M 1/02 (2013.01); F02C 7/36 (2013.01); F02K 3/06 (2013.01); F16H 57/043 (2013.01); F16H 57/0479 (2013.01); F16H 57/0486 (2013.01); F16N 7/16 (2013.01); F16N 7/40 (2013.01); F16N 29/02 (2013.01); F05D 2260/40311 (2013.01); F05D 2260/98 (2013.01); F16N 2210/02 (2013.01); F16N 2260/32 (2013.01);
Abstract
A lubrication system for a gas turbine engine, the system comprising: a gearbox, the gearbox comprising a sump; an oil tank; a primary gearbox lubrication system configured to pump oil from the oil tank to lubricate the gearbox with a gearbox primary feed; a secondary gearbox lubrication system, configured to lubricate the gearbox with oil from the sump when the oil level in the sump reaches a predetermined level; wherein the system is configured to increase the oil level in the sump to at least the predetermined level in response to a failure of the primary gearbox lubrication system.