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:
Sep. 10, 1991
Filed:
Oct. 05, 1988
Applicant:
Inventor:
Martin Burgbacher, St. Georgen, DE;
Assignee:
Papst-Motoren GmbH & Co. KG, St. Georgen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310361 ; 310154 ; 310254 ;
Abstract
A permanent magnet excited electric motor is provided with a low circumferential hump-like protrusion on the face of each electromagnetic pole to partially decrease the air gap between the stator and rotor and act as a so-called magnetic cam to exert a force on the rotor to smooth an otherwise uneven parasitic slot torque that occurs between the interaction of slot openings of the electromagnetic poles and the gaps between the permanent magnet poles.
Burgbacher, Martin. (1991). Permanent magnet excited electric motor (U.S. Patent No. 5047682). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5047682
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile