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. 07, 1998
Filed:
Aug. 08, 1996
Applicant:
Inventor:
Armin Conrad, Herborn, DE;
Assignee:
Balzers-Pfeiffer GmbH, Asslar, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 905 ; 310 90 ; 310 / ;
Abstract
A magnetic bearing arrangement for a rotor of a D.C. electric motor, which is rotated due to cooperation of a permanent magnet provided on the rotor and stator coils, and including a magnetic bearing, and at least one additional coil arrangement provided in a region of the permanent magnet at a side of a stator of the electric motor, and in which a voltage is induced by the rotatable permanent magnet means, with the at least one of the amplitudes and at least one of the phases of the relative geometrical position of the at least one additional coil arrangement and the permanent magnet being used as a sensor signal for stabilizing the magnetic bearing.