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:
Jan. 31, 1989
Filed:
Dec. 26, 1985
Mikio Ogusu, Hamamatsu, JP;
Nippon Gakki Seizo Kabushiki Kaisha, Hamamatsu, JP;
Abstract
In a disc cartridge player of a type in which a cartridge housing the disc is loaded in the player for playback of the disc, a disc clamping device for clamping the disc on a turntable of the player includes a magnetic attraction generating device which is constructed by forming at least a part of either one of a disc stabilizer provided in the disc cartridge on the turntable from a magnet and the other from a magnetic substance. The magnetic attraction generating device can also be constructed by forming at least a part of both the disc stabilizer and the turntable respectively from a magnet. The provision of the magnetic attraction generating device enables reduction of a force of a spring urging a clamper for pressing the disc stabilizer with resulting reduction of a drive force for operating the clamper in a release direction in an eject mode and, in some case, even obviates the necessity for providing the clamper itself.