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:
Dec. 19, 2000
Filed:
Mar. 18, 1999
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Sanyo Seiki Seisakusho, Nagano, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369271 ; 360 9912 ;
Abstract
A disc chucking mechanism includes a turn table 3 on which a disc 19 with a center hole 20 is located, a chucking magnet 10 for magnetically attracting a center hub 21 of the disc 19 to it, and a magnet yoke 60. The magnet yoke 60 includes a ring-like member which is inserted between the turn table 3 and the chucking magnet 10, engaging portions 62 which are extended from the ring-like member of the magnet yoke toward the turn table 3, and brought into engagement with the turn table, and magnet engaging portions 61 which are extended in the direction opposite to the bending direction of the engaging portions 62, and urgingly fix the chucking magnet 10.