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. 22, 1987
Filed:
Oct. 10, 1985
Yoshiya Taniguchi, Hyogo, JP;
Toyo Machinary & Metal Co., Ltd., Hyogo, JP;
Abstract
The invention relates to injection molding and is provided with a heating cylinder, an injection nozzle disposed at the forward end of the heating cylinder, a resin feed means, such as screw, which feeds molten resin to a portion in the vicinity of the forward end of the heating cylinder. Also provided is a piston means, such as a plunger, which has a stop valve mechanism that closes when it is moved in an injection direction and is opened when it is moved in a counterinjection direction and injects molten resin, fed to a portion in the vicinity of the forward end of the heating cylinder, into a cavity through the injection nozzle, whereby, through driving of the resin feed means and the piston means, charging of molten resin into the forward end of the heating cylinder and injection of the molten resin into a cavity are carried out partially concurrently.