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:
Aug. 01, 1989
Filed:
Jun. 08, 1988
Junji Takahashi, Saitama, JP;
Isami Kenmotsu, Saitama, JP;
Pioneer Electronic Corporation, Tokyo, JP;
Abstract
A disk clamping device for a compatible disk player capable of playing both compact disks and video disks in which the clamping force for the thicker video disk is greater than that for the thinner compact disk. The clamping device includes a turntable for mounting a selected one of a video disk and a compact disk, a hub for centering the disk mounted on the turntable, a clamper having a first surface for pressing the video disk and a second surface projecting in a clamping direction further than the first surface for pressing the compact disk, and a magnet constituting at least a part of the second surface of the clamper or the turntable for generating a force urging the clamper against the turntable.