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. 10, 2003
Filed:
Nov. 16, 2000
Taro Kishibe, Hyogo, JP;
Mikio Hirano, Osaka, JP;
Shigenori Uda, Osaka, JP;
Yuko Otani, Osaka, JP;
Masashi Senoo, Tottori, JP;
Kouji Kuyama, Tottori, JP;
Shuichi Yamane, Tottori, JP;
Akio Ando, Tottori, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A turntable device includes a disc base on the circumference thereof, and the disc base has a hardness more than a given level. The surface of the disc base is roughened at a given level in order to prevent the disc from slipping and adhesion to the disc base. The disc base can compensate surface wobble caused by the disc base. A manufacturing method of the turntable device includes the steps of: a) dripping liquid resin mixed with fine particles on the circumference of the turntable; and b) hardening the resin to form the disc base. The turntable device is good for e.g. CD players, optical disc driving apparatuses.