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. 12, 2001
Filed:
Sep. 24, 1999
Applicant:
Inventor:
Takahiro Sakaguchi, Kokubunji, JP;
Assignee:
TEAC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 1/7028 ; G11B 1/920 ;
U.S. Cl.
CPC ...
G11B 1/7028 ; G11B 1/920 ;
Abstract
A disk chucking mechanism for selectively chucking floppy disks onto a turntable has a strong neodym first magnet provided on an inner periphery of the turntable so as to attract a first hub and a second hub, and a weaker ferrite second magnet positioned low on an outer periphery of the turntable opposite a projection formed on the second hub and attracting only this second hub. By using these two magnets a satisfactory clamping of the floppy disks to the turntable can be achieved even when both lower grade (ordinary) and upper grade (high-density) floppy disks are loaded and driven.