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:
Oct. 28, 1997
Filed:
May. 25, 1995
Applicant:
Inventors:
Assignee:
Mecos Traxler AG, Winterthur, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02N / ;
U.S. Cl.
CPC ...
310 905 ;
Abstract
A magnetic bearing supports an object such as a rotor in a stable, contactless position. The bearing has electromagnets, each associated with a respective current control means (e.g., amplifier or power switch), disposed to exert magnetic forces in various directions to levitate the rotor. A constant-current source feeds a constant (total) current the electromagnets in parallel. Sensing means detect movements of the rotor from the position and inform a controller that responds by controlling the respective current to each electromagnet to maintain the rotor in position.