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:
Aug. 02, 2011
Filed:
Mar. 16, 2007
Lavon Wenger, Sabetha, KS (US);
Galen J. Rokey, Sabetha, KS (US);
Allan Spellmeier, Fairview, KS (US);
LaVon Wenger, Sabetha, KS (US);
Galen J. Rokey, Sabetha, KS (US);
Allan Spellmeier, Fairview, KS (US);
Wenger Manufacturing, Inc., Sabetha, KS (US);
Abstract
An improved extruder () is provided which permits successful introduction of very high quantities of injected steam into material being processed, on the order of 6-8% or more by weight steam. The extruder () includes an elongated extruder barrel () having at least one elongated, axially rotatable, helically flighted extrusion screw () therein. The barrel () is equipped with obliquely oriented steam injection ports () along the length thereof, housing steam injectors (). The barrel () includes relatively high free volume steam injection heads (and) having therein screw sections () of relatively long pitch length, together with steam restriction heads (, and) on opposite sides of the injection heads (, and) having therein relatively short pitch length screw sections ().