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:
Oct. 25, 2011
Filed:
Aug. 08, 2008
Hirotsugu Marumoto, Chiba, JP;
Shigeru Takeuchi, Chiba, JP;
Kohei Washida, Chiba, JP;
Daisuke Goto, Chiba, JP;
Munekatsu Kamiya, Hong Kong, CN;
Hirotsugu Marumoto, Chiba, JP;
Shigeru Takeuchi, Chiba, JP;
Kohei Washida, Chiba, JP;
Daisuke Goto, Chiba, JP;
Munekatsu Kamiya, Hong Kong, CN;
Sumitomom Heavy Industries, Ltd., Tokyo, JP;
Spiral Logic Limited, Hong Kong, CN;
Abstract
An object is to reduce the axial dimension of an injection apparatus (), facilitate the work of removing and inserting a screw (), and improve the quality of molded products. The injection apparatus () comprises a heating cylinder (), a screw (), and a drive apparatus. The screw () includes a plasticizing portion which includes a body portion () and a flight () projectingly formed on an outer circumferential surface of the body portion (). An index ε, which is obtained by dividing a value obtained by adding a screw stroke S and a screw effective length L together by the screw stroke S, satisfies the relation 2.0<ε<4.5. Even when the screw () is shortened, resin can be melted satisfactorily. Accordingly, the axial dimension of the injection apparatus () can be reduced.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile