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. 09, 2014
Filed:
Nov. 30, 2011
Tomoyoshi Sakamoto, Ota, JP;
Minoru Ojiro, Ota, JP;
Takashi Hirose, Ota, JP;
Yasuhiko Hata, Ota, JP;
Hiroki Katagiri, Ota, JP;
Tomoyoshi Sakamoto, Ota, JP;
Minoru Ojiro, Ota, JP;
Takashi Hirose, Ota, JP;
Yasuhiko Hata, Ota, JP;
Hiroki Katagiri, Ota, JP;
RP Topla Limited, Osaka, JP;
Abstract
A hollow body molding device having molten resin injected into a main cavity, fluid is pressure-injected through a pressure port after the injection of molten resin, a floating core moves to the outlet side, the molten resin is extruded from the outlet simultaneously with the movement of the floating core, and a hollow molded body is molded, the hollow body molding device having a floating core storage portion connected to the main cavity and stores the floating core moved by the pressurized fluid, an auxiliary cavity stores molten resin discharged from the main cavity and the floating core storage portion, communication passages and which communicate the floating core storage portion and the auxiliary cavity with each other; and an opening and closing means that opens and closes the communication passages by sliding movement. In the hollow body molding device, each inlet cross-sectional area B of the communication passages is specified.