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:
Jul. 08, 2025
Filed:
May. 13, 2021
Iwaki Co., Ltd., Tokyo, JP;
Toshiki Oniduka, Iruma-gun, JP;
Shinichirou Koreeda, Iruma-gun, JP;
Toshiaki Kamei, Sayama, JP;
Hikaru Saitou, Iruma-gun, JP;
Masaya Ueno, Iruma-gun, JP;
Takuya Seki, Sayama, JP;
IWAKI CO., LTD., Tokyo, JP;
Abstract
A rotor, a magnetic bearing, and a drive unit that rotationally drives the rotor. The magnetic bearing includes a bearing stator and a ring-shaped bearing rotor member. The drive unit has a drive stator and a ring-shaped drive rotor member. The bearing stator has a plurality of bearing stator cores consisting of a magnetic material, disposed on an outer peripheral side of the bearing rotor member. The bearing stator core has a first portion extending in a first direction orthogonal to a direction facing the bearing rotor member, and a pair of second portions extending to a bearing rotor member side from both end portions in the first direction of the first portion. The drive stator is formed so as to pass through a position between an outer peripheral surface of the rotor and the first portion core and between the pair of second portions.