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. 29, 1988
Filed:
Jul. 23, 1986
Applicant:
Inventors:
Nobuhiko Naganawa, Ibaragi, JP;
Yoshitake Kato, Ibaragi, JP;
Minoru Fujita, Ibaragi, JP;
Kazuya Fukunaga, Toride, JP;
Assignee:
Hitachi Maxell, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360133 ; 360128 ;
Abstract
A disc cartridge which comprises an outer case formed of a top half and a bottom half assembled to the top half to provide a disc chamber for accommodating a recording disc adapted to be rotated, a pair of pressure plates mounted in the top half and bottom half so as to oppose each other, cleaning sheets laid between a disc and the pressure plates and openings defined respectively in the top half and bottom half so as to correspond to each of the pressure plates for pressing the pressure plates toward the disc.