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:
Oct. 30, 2007
Filed:
May. 21, 2004
Applicants:
Alan J Mitcham, Ponteland, GB;
Anthony G Razzell, Derby, GB;
Inventors:
Alan J Mitcham, Ponteland, GB;
Anthony G Razzell, Derby, GB;
Assignee:
Rolls-Royce plc, London, GB;
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A stator corecomprises laminations () of low loss stator iron forming a body of magnetic nature and lamination components () of high thermal conductivity material regularly arranged within that body. The high thermal conductivity components () increasing the effective radial thermal conductivity rate of the corewhereby temperature gradients are reduced in comparison with previous stator cores. Thus, there is a reduction in operational temperature of the electrical insulation on the stator windings.