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:
Apr. 13, 2004
Filed:
Jul. 09, 2001
Hidehiko Ota, Ehime, JP;
Yoshinori Takada, Ehime, JP;
Hideaki Yamataka, Ehime, JP;
Seigo Matsumoto, Ehime, JP;
Tsuyoshi Hashida, Ehime, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A disk retaining mechanism that realizes a reduction of its thickness while maintaining a clamping force and a centering accuracy of the clamper, with a structure, in which: a guide ( ) is disposed in a manner to closely confront a clamper retaining member ( ); a clamper unit retaining portion of the clamper retaining member ( ) has such a shape that a part of which an entire circumference is cut out; a clamper unit for depressing a disk ( ) is provided with a disk holder ( ) having an engagement projection (M); and an annular engagement groove (F) formed in a turntable ( ) for loading the disk ( ) is arranged below an upper end of a main shaft ( ) that transfers rotation of a motor unit ( ).