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:
Feb. 28, 1995
Filed:
Sep. 13, 1993
Applicant:
Inventor:
Akira Yamamura, Tokyo, JP;
Assignee:
Nippon Ferrofluidics Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 905 ; 310 36 ; 310 51 ;
Abstract
This invention discloses a magnetic bearing device comprising a rotary member rotatably supported on a supporting member through a magnetic bearing, a free oscillating member which is oscillatable almost coaxially with the rotary member and disposed at a position not being in contact with both supporting member and rotary member, magnetic coupling member for oscillating the free oscillating member and the rotary member together, and a damping member disposed between the free oscillating member and the supporting member.