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:
Dec. 08, 2009
Filed:
Oct. 02, 2008
Masaaki Minamimura, Nagano-ken, JP;
Yasuhiko Takeuchi, Nagano-ken, JP;
Toshiyasu Koda, Nagano-ken, JP;
Mamoru Miyagawa, Nagano-ken, JP;
Ikuo Uwadaira, Nagano-ken, JP;
Taku Kawano, Nagano-ken, JP;
Masaaki Minamimura, Nagano-ken, JP;
Yasuhiko Takeuchi, Nagano-ken, JP;
Toshiyasu Koda, Nagano-ken, JP;
Mamoru Miyagawa, Nagano-ken, JP;
Ikuo Uwadaira, Nagano-ken, JP;
Taku Kawano, Nagano-ken, JP;
Nissei Plastic Industrial Co., Ltd., Nagano-ken, JP;
Abstract
A method of preventing leaking of molten metal from a nozzle in an injection apparatus comprising, metering the molten metal by travel of a plunger head backward from a most forward position to a most backward position at the rear of a supply opening while maintaining nozzle contact after completion of an injection step and supplying molten metal from a furnace into a cylinder body through the supply opening, after completion of the metering, closing the supply opening by travel of the plunger head forward at a low speed from the backward position to a stand-by position ahead of the supply opening for cutting off the communication between the molten metal in the cylinder body and the molten metal in the furnace.