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:
Feb. 03, 1998
Filed:
Jul. 11, 1996
Applicant:
Inventors:
Noboru Takarasawa, Nagano, JP;
Norihide Yoshida, Nagano, JP;
Assignee:
Sankyo Seiki Mfg. Co., Ltd., Nagano-ken, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 9905 ;
Abstract
In accordance with the invention, a disk chucking mechanism comprises a spindle for engaging the center hole of a metallic hub fastened in the center portion of a disk and a turntable that rotates as a single unit with the spindle. A drive pin is provided for engaging an off-center hole provided in the hub at a location off-center with respect to the center of the hub for regulating the movement of the hub. A chucking magnet is included which is fastened to the turntable for magnetically attracting the hub. The chucking magnet has a plurality of magnetic pieces.