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. 19, 2016
Filed:
May. 30, 2012
Applicants:
Aida Alvarez, Portugalete, ES;
Yi Wang, Nottingham, GB;
Lee a Clark, Derby, GB;
Inventors:
Assignee:
ROLLS-ROYCE plc, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D 25/20 (2006.01); F01D 25/18 (2006.01); F02C 7/06 (2006.01);
U.S. Cl.
CPC ...
F01D 25/18 (2013.01); F01D 25/183 (2013.01); F01D 25/20 (2013.01); F02C 7/06 (2013.01); F16C 2360/23 (2013.01); Y02T 50/671 (2013.01); Y10T 137/0396 (2015.04);
Abstract
A bearing chamber apparatus () comprising a bearing chamber () having one or more seals () which seal an interior () of the chamber from an exterior () of the chamber; and further comprising: a pump in fluid communication with the interior of the chamber; and a controllable valve () in fluid communication with the interior of the chamber and the outside atmosphere. The arrangement allows oil leakage from the bearing chamber to be prevented and also allows a minimum pressure to be maintained within the bearing chamber.