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:
Aug. 22, 2006
Filed:
Apr. 21, 2004
Mark C. Morris, Phoenix, AZ (US);
Alan G. Tiltman, Fountain Hills, AZ (US);
Kin Poon, Tempe, AZ (US);
Bradley A. Volkmann, Phoenix, AZ (US);
Mark C. Morris, Phoenix, AZ (US);
Alan G. Tiltman, Fountain Hills, AZ (US);
Kin Poon, Tempe, AZ (US);
Bradley A. Volkmann, Phoenix, AZ (US);
Honeywell International, Inc., Morristown, NJ (US);
Abstract
A gas turbine engine is configured to use relatively cool, low pressure air discharged from a low pressure compressor to supply buffer air to lubrication sump seals. The engine is further configured such that the lubrication sump is thermally layered by isolating relatively hot, high pressure compressor air from the sump by utilizing a warm vent mixing cavity, which is located radially between of the hot high pressure compressor air and the cool buffer air, which is located in a buffer cavity between the vent cavity and the sump.