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:
Feb. 21, 2006
Filed:
Jul. 16, 2002
Osamu Nagatsuka, Kanagawa, JP;
Osamu Nagatsuka, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A spindle motor adapted to be loaded with a disk provided with an attracted plate and to rotate the disk is provided which comprises a turn table having a flange portion on a front surface of which the disk is to be mounted and on a back surface of which a rotor yoke is supported, and a cylindrical portion a distal end of which is to be opposed to the attracted plate, the turn table being supported on a housing of a stator through a rotational shaft; an attraction magnet fixed to the distal end of the cylindrical portion of the turn table, and an aligning member an inner periphery of which is engaged with an outer periphery of the cylindrical portion and an outer periphery of which is to be brought into contact with an inner periphery of a center hole of the disk to align the disk; and an urging member interposed between the aligning member and the flange portion of the turn table to urge the aligning member by restoration force, wherein the urging member is comprised of an annular spring material with a plurality of peaks in wave shape.