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:
May. 09, 1978
Filed:
Oct. 24, 1975
Applicant:
Inventor:
Warner J de Putter, Hardenberg, NL;
Assignee:
Wavin B. V., Zwolle, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29B / ; B65G / ; B29F / ; B29F / ;
U.S. Cl.
CPC ...
366 75 ; 198625 ; 425204 ; 425208 ; 366 81 ; 366 83 ;
Abstract
An extruder for synthetic material is disclosed which includes an extruder housing provided with at least two worm conveyer shafts, each having one or more helices thereon. An inlet opening is provided in the housing at the extruder input for introducing the synthetic material and a degassing outlet is provided in the housing downstream of the inlet. Intermediately of the material inlet and degassing outlet, distributing members are arranged on the worm shaft peripheries, the distributing members comprising intermeshing tooth-shaped heightened parts of generally hemispherical configuration.