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:
Aug. 13, 2002
Filed:
Aug. 30, 2000
Hiroshi Meguro, Miyagi, JP;
Kazutoshi Yamamoto, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A main cartridge body unit reduced in size and thickness. To this end, the main cartridge body unit includes a disc-shaped recording medium a main cartridge body unit including an upper plate and a lower plate both of a metal material, forming a plate pair, and an intermediate frame recording and/or reproducing apertures formed in the main cartridge body unit for exposing a portion of a recording area of the disc-shaped recording medium to outside across the inner and outer rims of the disc-shaped recording medium, and a shutter member provided for linear movement within the inside of the main cartridge body unit for opening/closing the recording and/or reproducing aperture. The intermediate frame is sandwiched between the upper and lower plates The disc-shaped recording medium is housed in the main cartridge body unit