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. 27, 2021
Filed:
Mar. 06, 2019
Applicant:
Rolls-royce Corporation, Indianapolis, IN (US);
Inventors:
John R. Gebhard, Fishers, IN (US);
Adam L. Kempers, Indianapolis, IN (US);
Assignee:
ROLLS-ROYCE CORPORATION, Indianapolis, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 57/04 (2010.01); F01D 25/20 (2006.01);
U.S. Cl.
CPC ...
F16H 57/0441 (2013.01); F01D 25/20 (2013.01); F16H 57/0423 (2013.01); F16H 57/0452 (2013.01); F16H 57/0486 (2013.01); F05D 2220/32 (2013.01); F05D 2260/98 (2013.01);
Abstract
A gearbox is provided for use in a gas turbine engine. The gearbox includes a plurality of gears, a casing surrounding the plurality of gears, and a lubricant re-circulation system. The casing defines a sump positioned beneath the plurality of gears to retain lubricant. The lubricant re-circulation system includes a re-circulation pump, a re-circulation inlet positioned within the sump, and a re-circulation outlet positioned to supply lubricant to the plurality of gears.