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:
Mar. 29, 2005
Filed:
Apr. 20, 2001
Akiko Taira, Kanagawa, JP;
Toshiharu Nakazawa, Kanagawa, JP;
Akiko Taira, Kanagawa, JP;
Toshiharu Nakazawa, Kanagawa, JP;
Ebara Corporation, Tokyo, JP;
Abstract
A magnetic bearing control device that can operate a motor with low noise, has a simple system construction and is compact and inexpensive comprises: at least a pair of opposed electromagnets for supporting a suspended unit without contact; a motor M for rotating the suspended unit; and a controller for driving and controlling them. A DC/DC convertersupplies a driving power to an inverterfor driving the motor M. The inverterfor driving the motor M uses both PWM and PAM control schemes to drive and rotate the motor M.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile