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:
Jan. 13, 2004
Filed:
Dec. 19, 2000
Toshiyasu Koda, Sakaki-machi, JP;
Mamoru Miyagawa, Sakaki-machi, JP;
Yuji Hayashi, Sakaki-machi, JP;
Nissei Plastic Industrial Co., Ltd., Nagako-ken, JP;
Abstract
An injection apparatus for transferring melted metals is capable of metering and degassing the melted metal in a reservoir to reserve metals in the liquid phase for injection. The injection apparatus includes a heating cylinder having a metering chamber. An injection screw is movably and rotationally installed within the heating cylinder. A tip end of the injection screw forms a plunger insertable into the metering chamber with a clearance for sliding. The reservoir includes an axial portion free of screw flights between the plunger and a feeding portion that has a screw flight around its axis. A projected portion for limiting the feeding of granular metals flowing to the reservoir and for preventing the metals in liquid phase from flowing backward during injection is provided on a boundary between the feeding portion and the reservoir.