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:
Nov. 27, 2018
Filed:
Nov. 23, 2012
Applicant:
Rolls-royce Plc, London, GB;
Inventors:
Peter Ellison Heaton, Derby, GB;
Crispin David Bolgar, Nottingham, GB;
Assignee:
ROLLS-ROYCE plc, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02C 7/06 (2006.01); F01D 25/16 (2006.01); F02C 7/28 (2006.01); F01D 25/18 (2006.01); F02C 6/08 (2006.01); F16C 33/76 (2006.01); F01D 11/04 (2006.01); F01D 11/06 (2006.01);
U.S. Cl.
CPC ...
F02C 7/06 (2013.01); F01D 11/04 (2013.01); F01D 11/06 (2013.01); F01D 25/162 (2013.01); F01D 25/183 (2013.01); F02C 6/08 (2013.01); F02C 7/28 (2013.01); F16C 33/762 (2013.01); F05D 2260/601 (2013.01);
Abstract
A gas turbine engine sealing air system including a bearing chamber seal to prevent lubricant fluid loss from a fluid chamber, the sealing effected by ingress of sealing air. The system includes an air vent duct coupled to the bearing chamber seal. An ejector is located within the air vent duct to pump sealing air from the bearing chamber seal and through the air vent duct. A first duct is coupled between a starter air system of the gas turbine engine and the ejector to provide motive fluid to the ejector during gas turbine engine starting.