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. 11, 2017
Filed:
Nov. 28, 2012
Applicant:
Pratt & Whitney Canada Corp., Longueuil, CA;
Inventors:
Assignee:
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02C 7/06 (2006.01); F01D 25/16 (2006.01); F01D 25/18 (2006.01); F01D 11/04 (2006.01); F02C 6/08 (2006.01);
U.S. Cl.
CPC ...
F02C 7/06 (2013.01); F01D 11/04 (2013.01); F01D 25/16 (2013.01); F01D 25/183 (2013.01); F02C 6/08 (2013.01);
Abstract
The gas turbine engine has a bleed air aperture formed in the radially outer wall upstream from the combustor and a bearing cavity formed within the radially inner wall, at least two bearing seals enclosing at least one bearing in the bearing cavity and separating the bearing cavity from associated buffer air entry points, an oil supply system including oil paths leading to each of the bearings; a buffer air supply system including buffer air paths leading to each of the entry points and a baffle partitioning one of the entry points.