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:
Nov. 21, 2017
Filed:
Feb. 24, 2016
Nidec Corporation, Kyoto, JP;
Tomotsugu Sugiyama, Kyoto, JP;
Teiichi Hirono, Kyoto, JP;
Shinichiro Noda, Kyoto, JP;
Akihiro Kimura, Kyoto, JP;
Yoshiharu Ikegami, Kyoto, JP;
Tomohiro Hasegawa, Kyoto, JP;
Masafumi Fujimoto, Kyoto, JP;
Tomohiro Yoneda, Kyoto, JP;
NIDEC CORPORATION, Kyoto, JP;
Abstract
A dynamic pressure bearing apparatus includes a bearing portion, a shaft, a radial dynamic pressure bearing portion, and a seal gap. An annular member arranged in an annular shape, fixed to the shaft axially between the seal portion and the attachment surface, and arranged to extend radially outward beyond an opening of the seal gap. A minute horizontal gap extending radially is defined between an upper surface of the bearing portion and a lower surface of the annular member. The seal gap is arranged to be in communication with an exterior space through the horizontal gap.