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:
Jun. 28, 2005
Filed:
Mar. 11, 2004
Taizo Ikegawa, Kadoma, JP;
Masahiro Jyono, Kadoma, JP;
Yasunori Tokuno, Kadoma, JP;
Takeyoshi Yamamoto, Kadoma, JP;
Satoko Miki, Kadoma, JP;
Taizo Ikegawa, Kadoma, JP;
Masahiro Jyono, Kadoma, JP;
Yasunori Tokuno, Kadoma, JP;
Takeyoshi Yamamoto, Kadoma, JP;
Satoko Miki, Kadoma, JP;
Abstract
A gas dynamic bearing motor is provided that is capable of setting a bearing radius to a large value to obtain a sufficient radial stiffness, and preventing lock of the bearing and scattering of wear powder outside the bearing. An annular grooveis provided on a lower end surfaceof a hubto thereby enable a deformation of an inner circumferential surfaceof the hubwhen recording disksare loaded on the hubto be suppressed to a small value, thereby enabling partial contact in the radial bearing to be suppressed and lock of the bearing to be prevented. Further, a protrusionis provided on a basein a circumferential direction and fitted in the annular grooveto construct a labyrinth seal, thereby enabling scattering of wear powder generated on bearing surfaces outside the bearing to be prevented.