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:
Oct. 03, 2003
Yasuyuki Abe, Miyagi, JP;
Shuichi Kikuchi, Miyagi, JP;
Susumu Shibagaki, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A recording medium cartridge includes a disc, an inner rotor and a shutter in a shell. Torque is applied to the inner rotor by a coil spring to drive the shutter so as to maintain the closed state of an opening part provided in the shell. When the recording medium cartridge is inserted into a disc device, the inner rotor is rotated against the resilient force of the coil spring by a shutter opening mechanism provided in the disc recording and reproducing device. Thus, the shutter is moved to a position where the opening part provided in the shell is opened. When the cartridge is ejected from the disc device, the inner rotor is rotated by the resilient force of the coil spring to close the shutter.