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:
Sep. 20, 1977
Filed:
Jul. 07, 1975
Zehev Tadmor, Haifa, IL;
Imrich Klein, Highland Park, NJ (US);
Scientific Process & Research, Inc., Highland Park, NJ (US);
Abstract
Apparatus and method for preparing a plasticated material from solids introduced into the apparatus, the apparatus including a barrel having a screw conveyor defining a channel for conveying the material in a downstream direction as the material is melted, the channel including a solids conveying zone and a melting zone downstream from the solids conveying zone, the apparatus and the method including, respectively, means and the step of providing an abrupt change in the volume of the channel at a specified location between the solids conveying zone and the melting zone for inducing the formation of a melt pool in the channel at that location.