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:
Jan. 13, 2015
Filed:
Mar. 30, 2012
Natsuhiko Mori, Kuwana, JP;
Nobuyoshi Yamashita, Kuwana, JP;
Fuminori Satoji, Kuwana, JP;
Isao Komori, Kuwana, JP;
Toshiyuki Mizutani, Kuwana, JP;
Masafumi Okuma, Tokyo, JP;
Kenichi Mitani, Tokyo, JP;
Natsuhiko Mori, Kuwana, JP;
Nobuyoshi Yamashita, Kuwana, JP;
Fuminori Satoji, Kuwana, JP;
Isao Komori, Kuwana, JP;
Toshiyuki Mizutani, Kuwana, JP;
Masafumi Okuma, Tokyo, JP;
Kenichi Mitani, Tokyo, JP;
NTN Corporation, Osaka-shi, JP;
Abstract
It is an object of the present invention to provide a bearing member having a highly accurate dynamic pressure generating portion stably at low cost. Dynamic pressure grooves () and () are formed as the dynamic pressure generating portions on an inner circumferential surface of the electroforming portion () by an electroforming process, and injection molding is performed by using a resin while inserting the electroforming portion (), thereby forming a bearing member (). A shaft member () is inserted into an inner circumference of the bearing member.