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:
Jan. 26, 2016
Filed:
May. 11, 2011
Applicants:
Phillip George Dickinson, Harrogate, GB;
Paul Andrew Sykes, Otley, GB;
Norman Neilson Fulton, Harrogate, GB;
Thilak Raj Durairaj, Harrogate, GB;
Inventors:
Phillip George Dickinson, Harrogate, GB;
Paul Andrew Sykes, Otley, GB;
Norman Neilson Fulton, Harrogate, GB;
Thilak Raj Durairaj, Harrogate, GB;
Assignee:
NIDEC SR DRIVES, LTD, Harrogate, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/24 (2006.01);
U.S. Cl.
CPC ...
H02K 1/246 (2013.01); H02K 1/24 (2013.01);
Abstract
A rotating electrical machine has a rotor composed of laminations having salient poles. The poles have one or more holes which are positioned so as to reduce the peak stress experienced by the laminations when the rotor is rotating. The holes are chosen according to a disclosed design procedure which gives a reduction in peak stress for a given limit on the output of the machine.