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:
Jul. 15, 2003
Filed:
Mar. 01, 2000
Applicant:
Inventor:
Hideaki Funakoshi, Osaka, JP;
Assignee:
Funai Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/82 ; G11B 1/906 ;
U.S. Cl.
CPC ...
G11B 5/82 ; G11B 1/906 ;
Abstract
An information recording disk is disposed on a turntable. A damper fasten the information recording disk onto the turntable and coaxially rotated together with the turntable. A sensor unit includes a photo emitter and a photo detector opposed to each other such that respective optical axes are aligned on a straight line. An interception member is formed with the damper and periodically intercepts light emitted from the photo emitter so that the sensor unit detects the damper rotates together with the information recording disk.