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. 23, 1980
Filed:
Nov. 24, 1978
Josef Klein, Troisdorf-Sieglar, DE;
Reifenhauser KG, Troisdorf, DE;
Abstract
A nozzle assembly has an upstream part which transforms a solid thermoplastic-resin strand into an upstream tube section which is centered on an axis and flows axially. Formations inside this upstream part impart rotation about the axis to at least a portion of the material of the upstream tube section. This upstream tube section is then deflected by a distributor radially outwardly and then forced through a plurality of generally angularly equispaced radially extending throttle passages in a throttle ring. The individual solid streams issuing from this throttle ring are united into a downstream tube section that is passed axially through a downstream nozzle part which is also provided with formations that impart rotation about the axis to at least a portion of the material of the downstream tube section. Eventually the tube issues from the downstream end of the downstream nozzle part as a large-diameter tube suitable for blow molding.