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. 04, 2007
Filed:
Mar. 30, 2004
Hideki Kuwajima, Kyoto, JP;
Kaoru Matsuoka, Osaka, JP;
Shigeo Obata, Hyogo, JP;
Kenichi Miyamori, Hyogo, JP;
Hideki Kuwajima, Kyoto, JP;
Kaoru Matsuoka, Osaka, JP;
Shigeo Obata, Hyogo, JP;
Kenichi Miyamori, Hyogo, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
Disclosed is a spindle motor and a disk drive unit equipped with the same, having advantages of preventing hard collision between a disk and a signal conversion element due to lifting of rotating components, and avoiding the signal conversion element and swing means for positioning the signal conversion element from being damaged irreparably. Specifically, spindle motorcomprises rotor unit, stator, stator-side bearing memberin engagement with rotor-side bearing memberto form a shaft rotating type fluid bearing, and chassis. Rotor hubhas hollow cylinder portionnear central axisof rotation, and cylindrical portionof support columnsecured to chassisis positioned inside the hollow space of cylinder portionwithout being in contact thereto. Coveris placed with a bottom side of abutment portionkept in abutment upon an upper end of cylindrical portionof support columnwith a predetermined small clearance provided between upper endof rotor huband the bottom side of abutment portion