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:
Sep. 15, 1987
Filed:
Nov. 07, 1985
Masao Nakamori, Kawaguchi, JP;
Harunobu Ichinose, Tokyo, JP;
Copal Company Limited, , JP;
Abstract
A magnetic disc mounting mechanism for use in a disc drive unit adapted to drive a magnetic disc while magnetically attracting and holding the disc on a spindle shaft. The coupling mechanism includes a forcible pressing member for forcibly fitting a center core of the disc onto the spindle shaft and a member which is adapted to release the pressing of the forcible pressing member while operating an ejecting mechanism. This member operates to release, after the forcible pressing member has pressed the center core of the disc onto the spindle shaft such as to couple the disc to the spindle shaft, the pressing force exerted by the pressing member so that the load of the spindle motor during driving the disc is reduced advantageously.