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:
Aug. 09, 2011
Filed:
Jun. 12, 2007
Hirotsugu Marumoto, Chiba, JP;
Munekatsu Kamiya, Hong Kong, CN;
Hirotsugu Marumoto, Chiba, JP;
Munekatsu Kamiya, Hong Kong, CN;
Sumitomo Heavy Industries, Ltd., Tokyo, JP;
Spiral Logic Limited, Hong Kong, CN;
Abstract
An object is to reduce the axial dimension of an injection apparatus, melt a molding material uniformly, and improve the quality of molded products. A screw () comprises a plasticizing portion which comprises a body portion () and a flight () projectingly formed on an outer circumferential surface of the body portion (). A groove-depth setting region is defined over a predetermined section of the plasticizing portion, and in the groove-depth setting region, the ratio γof a groove depth τto a diameter δof pellets of a molding material falls within the range of 1≦γ≦1.5 where the groove depth τis a depth of a groove () formed along the flight (). In the groove (), pellets are arranged laterally and caused to advance while rolling along the groove (). Since the pellets do not aggregate, no solid bed is formed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile