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:
Sep. 01, 2009
Filed:
Feb. 24, 2004
Takeyoshi Yamamoto, Ozu, JP;
Yasunori Tokuno, Ozu, JP;
Masahiro Jyono, Ozu, JP;
Taizo Ikegawa, Ozu, JP;
Takeyoshi Yamamoto, Ozu, JP;
Yasunori Tokuno, Ozu, JP;
Masahiro Jyono, Ozu, JP;
Taizo Ikegawa, Ozu, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A magnet () for trapping abraded powder is disposed in a connecting passage between an opening of a sleeve and an opening of a hydrodynamic bearing motor, and a shaft (), a sleeve (), a thrust flange (), and a thrust main plate () are made of an austenitic stainless. With this configuration, since the austenitic stainless acting as a nonmagnetic substance is used, it is possible to increase a degree of cleaning. Further, abraded powder of the austenitic stainless is transformed into a magnetic substance, and thus a flow of the abraded powder to the outside can be prevented by providing the magnet for trapping abraded powder in the connecting passage between an opening of a bearing and the outside of the motor.