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:
Nov. 09, 1982
Filed:
Aug. 21, 1981
Applicant:
Inventor:
Masahiko Ohki, Toyota, JP;
Assignee:
Sumitomo Rubber Industries, Ltd., Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29F / ;
U.S. Cl.
CPC ...
4251311 ; 264171 ; 2641 / ; 4251335 ; 425186 ; 4251 / ; 425462 ;
Abstract
A multi-extrusion die assembly for use in a multi-extrusion arrangement for thermoplastic materials in which undesirable oozing out or exuding of thermoplastic material through mating surfaces between a die box and a preformer or deformation of extruded material at a second introducing passage, etc. are prevented through improvements on the disposition of extruders and constructions of the die box and preformer, while attaching and detaching of a block and a lower box with respect to the die box are facilitated for efficient extrusion.