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:
Jun. 20, 1989
Filed:
Mar. 30, 1988
Applicant:
Inventors:
Josef Feigel, Landshut, DE;
Klaus Pfendler, Bonndorf, DE;
Assignee:
Standard Elektrik Lorenz Aktiengesellschaft, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310156 ; 310216 ;
Abstract
An electronically commutated, collectorless direct-current motor is disclosed whose stator has a drum winding and an external magnetic yoke surrounding same, and whose rotor consists of a shaft, a multipolar, permanent-magnet body, and an internal magnetic yoke. To reduce the moment of inertia, the internal magnetic yoke has kidney-shaped apertures. The direct-current motor exhibits a good dynamic behavior and is used in data processing equipment.