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:
Apr. 04, 2000
Filed:
Jun. 18, 1998
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
The present invention is directed to a hopper structure for feeding a powdery material adapted to enable gas, etc., generated in a plasticizing cylinder to escape irrespective of the state of feed of the powdery material within a hopper. To this end, the hopper structure of the present invention is arranged such that the plasticizing cylinder is formed with a material feed port for providing a communication between the interior and the exterior of the plasticizing cylinder, and that a hopper is provided for feeding a powdery material via the material feed port to the outer periphery of a screw within the plasticizing cylinder, and that a material feeding tube is mounted to the bottom of the hopper for allowing a communication between the bottom of the hopper and the vicinity of the outer periphery of the screw, with a gap for the removal of air being formed between the outer peripheral surface of the material feeding tube and the inner peripheral surface of the material feed port, the gap extending from the vicinity of the outer periphery of the screw to the exterior. The present invention is applied for the feed of a powdery molding material into the plasticizing cylinder of an in-line screw injection molding machine or of an in-line screw extrusion molding machine.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile