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:
May. 09, 1995
Filed:
Oct. 07, 1993
Applicant:
Inventor:
Koichi Katakura, Nagano, JP;
Assignee:
Kabushiki Kaisha Sankyo Seiki Seisakusho, Nagano, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 9808 ;
Abstract
A magnetic disc drive device contains a cylindrical hub integrally rotating with a magnetic disc, the cylindrical hub having disc clamp holes defined in an end surface thereof; a motor for rotating the cylindrical hub; and a projecting member formed between the disc clamp hole and the magnetic disc to be clamped in such a manner that the projecting member is extended in the axis direction of the hub on said end surface of the hub.