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:
Oct. 01, 2002
Filed:
Jul. 09, 1999
Tetsuhiro Shiomi, Kanagawa, JP;
Takuya Niitsu, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A disc cartridge housing a driving rotating unit and adapted to be loaded along with the driving rotating unit on a recording and/or reproducing apparatus. A shutter mechanism for opening/closing an opening provided in a main cartridge body portion includes two shutter members movable along the major surface of the main cartridge body portion. An area in which the first shutter member and the second shutter member are moved is delimited by first and second wall sections arranged facing each other. The first and second shutter members are intruded into a spacing defined between the first and second wall sections. The first and second wall sections are arranged in the portions of the main cartridge body portion facing the major surface of the disc-shaped recording medium so that the wall sections face each other with a pre-set separation in-between. The main cartridge body portion is formed with first and second openings facing the first and second wall sections. These first and second openings are adapted for exposing a portion of the signal recording region of the disc-shaped recording medium to outside across the inner and outer rims of the disc-shaped recording medium and for allowing the center of the disc-shaped recording medium to face outwards. The first and second shutter members are arranged for movement between the first and second wall sections. The second shutter member is rotated in association with the first shutter member by having its portion engaged and held by an engagement holding portion provided on the first shutter member.