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:
Jan. 18, 2005
Yuji Iwaki, Miyagi, JP;
Shuichi Kikuchi, Miyagi, JP;
Teiko Hoshi, Miyagi, JP;
Naoki Inoue, Kanagawa, JP;
Manabu Obata, Kanagawa, JP;
Mitsuyoshi Kawaguchi, Kanagawa, JP;
Yuji Iwaki, Miyagi, JP;
Shuichi Kikuchi, Miyagi, JP;
Teiko Hoshi, Miyagi, JP;
Naoki Inoue, Kanagawa, JP;
Manabu Obata, Kanagawa, JP;
Mitsuyoshi Kawaguchi, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A method for producing an inner shell used for a disc cartridge in which an optical disc, an inner shell and shutter members are housed in a main cartridge body unit. The inner shell provided in the main cartridge body unit includes a first molded portion, provided with an aperture, a second molded portion having a resin injection port and molded at a position where the aperture is formed, and a flanged thin-walled section connecting the first and second molded portions to each other. The method includes the steps of injecting molten resin into a cavity defined by a fixed metal die and a movable metal die for molding the first molded portion, the second molded portion, and the flanged thin-walled section, and severing the flanged thin-walled section by a punch provided to the movable metal die before the molten resin injected into the cavity is cooled and solidified.