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. 30, 2002
Filed:
Feb. 18, 2000
Applicant:
Inventors:
Ian C D Care, Derby, GB;
Arnold C Newton, Derby, GB;
Assignee:
Rolls-Royce plc, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02K 3/06 ;
U.S. Cl.
CPC ...
F02K 3/06 ;
Abstract
A gas turbine engine ( ) is provided with a plurality of shafts ( ) interconnecting its compressor portions ( ) with its turbine portions ( ). Each shaft ( ) is supported in the hotter part of the engine by electromagnetic bearings ( ) and by rolling element bearings ( ) in the remainder of the engine ( ). The arrangement provides a simplified liquid lubrication system for the rolling element bearings ( ) which reduces the likelihood of lubricant thermal degradation of the lubricant.