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. 27, 1983
Filed:
Jun. 05, 1981
Applicant:
Inventors:
Akira Iwawaki, Yokohama, JP;
Eiji Horiuchi, Yokohama, JP;
Sadahiko Shinya, Ninomiya, JP;
Kinshiro Kojima, Kawasaki, JP;
Katsuo Kodama, Yokohama, JP;
Kotaro Kawabata, Yamato, JP;
Hisahiko Fukase, Tokyo, JP;
Assignee:
Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
4253 / ; 264540 ; 264541 ; 2642092 ; 2642098 ; 425532 ; 425558 ; 425561 ; 425380 ; 425381 ; 425465 ; 425466 ; 425467 ;
Abstract
An extrusion head for use in blow molding machines for molding parison having a single layer or wall or a plurality of layers or walls, in which a plunger is slidably interposed between a head body and a core and the plastic material is successively accumulated in an accumulation chamber defined between the extruding end of the plunger, the head body and the core so that the faster the plastic material is introduced into the extrusion head, the faster it is extruded.