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:
Jan. 03, 1989
Filed:
Oct. 08, 1987
Applicant:
Inventor:
Hideo Tsumura, Kamakura, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ; G11B / ;
U.S. Cl.
CPC ...
360135 ; 360 9807 ;
Abstract
A disc assembly for a magnetic disc apparatus comprises a plurality of vertically arranged magnetic discs each having a central aperture, a rotating shaft which is inserted in the central aperture of each of the magnetic discs and which is connected to a rotating source to be driven together with the magnetic discs, spacers interposed between the magnetic discs, and a clamp attached onto a top surface of the shaft, wherein a temperature compensating disc having substantially the same outer diameter as the magnetic discs is mounted on the clamp in one piece.