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:
Jul. 05, 1983
Filed:
Sep. 05, 1980
Hans Kuhnlein, Nuremberg-Grossgrundlach, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
A brushless D-C motor of the type having a permanent magnet rotor, a plurality of individual stator windings which are disposed 90.degree. apart with respect to each other, and at least two Hall-effect galvanomagnetic transducers which are disposed 90.degree. apart with respect to each other, and within the air gap of the motor. The galvanomagnetic transducers produce control signals in response to the angular position of the rotor for controlling the conductive states of semiconductive switching devices which are each electrically disposed in series with respective individual stator windings, and a controlled current generator which controls the current flowing through the stator windings so as to conform with a sinusoidal wave shape.