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:
Nov. 12, 1996
Filed:
Feb. 27, 1995
Tadao Yoneta, Shizuoka, JP;
Takashi Unno, Shizuoka, JP;
Yukihiro Kurita, Shizuoka, JP;
Chikaya Shinba, Shizuoka, JP;
NTN Corporation, Osaka, JP;
Abstract
AC input voltage is lowered at a transformer, rectified at a rectifying circuit, then smoothed at a smoothing circuit, and thus produced DC voltage is supplied to an inverter which drives a motor. The rectified DC voltage is provided to a DC/DC converter to generate power supply for a magnetic bearing, and DC power supply for controlling the magnetic bearing is generated at a DC/DC converter. During the power failure regenerative electric power from motor is provided to DC/DC converter to produce power voltage for the magnetic bearing, and DC voltage for controlling the magnetic bearing is provided from DC/DC converter.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile