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. 05, 2006
Filed:
Apr. 06, 2004
Teruyuki Takizawa, Neyagawa, JP;
Yoshito Saji, Ashiya, JP;
Hironori Okazawa, Katano, JP;
Kuniko Nakata, Neyagawa, JP;
Teruyuki Takizawa, Neyagawa, JP;
Yoshito Saji, Ashiya, JP;
Hironori Okazawa, Katano, JP;
Kuniko Nakata, Neyagawa, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A disc cartridge includes a cartridge body, first and second shutters, and a rotational member. The cartridge body includes a disc storage portion to store a disc in a rotatable state, a chucking hole provided on the bottom of the disc storage portion so as to get the disc chucked externally, and a head access window provided on the bottom of the disc storage portion so as to allow a head, which reads and/or writes data from/on the disc, to access the disc. The first and second shutters are provided so as to expose or cover the head access window by rotating in the disc storage portion. The rotational member is provided so as to rotate in the disc storage portion, too. The first and second shutters are interlocked with the rotational member so as to rotate in mutually opposite directions and at respectively different velocities.