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:
Mar. 26, 1991
Filed:
Dec. 05, 1988
Applicant:
Inventor:
Eiji Yamamori, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369289 ; 369290 ; 369291 ;
Abstract
Described is an apparatus for adapting the diameter of the disk-like recording medium. The apparatus includes a supporting member in the form of a ring having an opening for exposing the signal record area of the disk-like recording medium, such as an optical disk, to the outside, and having a diameter larger than the diameter of the disk-like recording medium. The recording medium is integrally retained by a holding system provided to the supporting member for holding the outer perimeter of the recording medium.