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. 15, 2017
Filed:
Mar. 09, 2012
Applicant:
Lennart Stridsberg, Stockholm, SE;
Inventor:
Lennart Stridsberg, Stockholm, SE;
Assignee:
STRIDSBERG INNOVATION AB, Stockholm, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/32 (2006.01); H02K 9/19 (2006.01); H02K 5/20 (2006.01);
U.S. Cl.
CPC ...
H02K 9/19 (2013.01); H02K 1/32 (2013.01); H02K 5/20 (2013.01);
Abstract
An electric motor/generator includes a rotor with magnets mounted on the surface of the rotor, the magnets facing the stator over a gap. The magnets have a very high flux density but a limited ability to withstand high stator currents at high temperatures, preferably magnets made of the N48H material. By providing rotor magnet cooling means that reduces the temperature of the magnets by a cooling fluid, use of magnets with lower maximum working temperature and higher flux density is permitted and thereby higher flux can be obtained from the magnets.