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:
Apr. 10, 2012
Filed:
Aug. 18, 2010
Hidehiko Hidaka, Kyoto, JP;
Shigeo Hayashi, Kyoto, JP;
Hiroyuki Ichizaki, Kyoto, JP;
Akihiro Nakagawa, Kyoto, JP;
Tatsuya Tatara, Kyoto, JP;
Harushige Osawa, Kyoto, JP;
Atsushi Inoue, Kyoto, JP;
Kazuya Ichimura, Kyoto, JP;
Hidehiko Hidaka, Kyoto, JP;
Shigeo Hayashi, Kyoto, JP;
Hiroyuki Ichizaki, Kyoto, JP;
Akihiro Nakagawa, Kyoto, JP;
Tatsuya Tatara, Kyoto, JP;
Harushige Osawa, Kyoto, JP;
Atsushi Inoue, Kyoto, JP;
Kazuya Ichimura, Kyoto, JP;
Nidec Corporation, Kyoto, JP;
Abstract
A motor includes a bearing mechanism, a stationary unit including a stator arranged radially outwards of the bearing mechanism, and a rotary unit supported by the bearing mechanism at the upper side of the stationary unit for rotation about a center axis with respect to the stationary unit. The rotary unit includes a substantially cylindrical closed-top rotor yoke having a cover portion arranged to cover the stator. The bearing mechanism includes a substantially cylindrical closed-bottom bush formed by a press work, a sleeve fixed inside the bush and provided with an upper portion protruding beyond the bush and a shaft inserted into the sleeve. An upper end of the bush is lower than or flush with an upper end of the stator in a direction parallel to the center axis.