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:
Mar. 28, 2017
Filed:
Oct. 20, 2015
Nidec Corporation, Kyoto, JP;
Tomohiro Hasegawa, Kyoto, JP;
Shunji Matsumoto, Kyoto, JP;
Takahiro Kikuichi, Kyoto, JP;
Mitsuhito Nishio, Kyoto, JP;
Noriaki Yamada, Kyoto, JP;
Satoru Otsu, Kyoto, JP;
Hiroyoshi Teshima, Kyoto, JP;
Kiyoto Ida, Kyoto, JP;
NIDEC CORPORATION, Kyoto, JP;
Abstract
There is provided a blower fan including a motor. In its bearing apparatus, the inner circumferential surface of the rotor cylindrical portionand the outer circumferential surface of the bearing portion are arranged to together define a seal gap. The bushingincludes a bushing base portionand a bushing cylindrical portion. The inner circumferential surface of the bushing cylindrical portionand the outer circumferential surface of the rotor cylindrical portionare arranged to together define a vertical gap. The vertical gap is arranged to have a minimum radial width equal to or smaller than a maximum width of the seal gap. A lower end portion of the rotor raised portionand an upper end portion of the bushing cylindrical portionare arranged to together define a second horizontal gap