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:
May. 17, 1994
Filed:
Jul. 30, 1992
Motoaki Shibayama, Kagawa, JP;
Takenori Tada, Kagawa, JP;
Terutsugu Oyama, Kagawa, JP;
Fumihiko Ishikawa, Kagawa, JP;
Hiromasa Higasa, Kagawa, JP;
Kabushiki Kaisha Shikoku Sogo Kenkyusho, Kagawa, JP;
Shikoku Denryoku Kabushiki Kaisha, Kagawa, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A superconduction bearing is provided in which the load capacity and rigidity of a rotary member are improved, run-out of the rotary member is prevented to support the rotary member in a stable, non-contacting manner, and manufacturing cost is reduced. The superconduction bearing includes a rotary member and a disk formed on the rotary member. The disk has permanent magnets provided thereon. The permanent magnets are magnetized to have opposite poles on top and bottom sides thereof. A permanent magnet section is thus formed by the disk and the permanent magnets. Superconductors are concentrically provided for rotatably supporting the rotary member. The permanent magnet section and the superconductor section are positioned opposite to each other. The width and thickness of the permanent magnets are set to 5 to 10 times the distance between the permanent magnet section and the superconductor section.