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:
Apr. 24, 2001
Filed:
Mar. 18, 1999
Kabushiki Kaisha Sankyo Seiki Seisakusho, Nagano, JP;
Abstract
A disc chucking mechanism includes a turn table, on which a disc with a center hole is disposed, driven by a rotation/drive mechanism, said turn table having a cylindrical portion to which the center hole of a disc in fit, a first guide protruding radially outwardly of the outer circumferential surface of the cylindrical portion, second and third guides retractably provided at positions angularly spaced approximately 120° from the first guide with respect to the center of rotation of the cylindrical portion, and auxiliary guides provided at mid-positions between the second guide and the first guide and between the third guide and the first guide, a height of a peak point of each auxiliary guide being smaller than a height of a peak point of the first guide when measured from the outer circumferential surface of the cylindrical portion, wherein the distance of each auxiliary guide measured from the outer circumferenial surface of the cylindrical portion in smaller than the distance of the peak point of the first guide from the outer circumferential surface.