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:
Oct. 08, 2019
Filed:
Sep. 08, 2017
Wenger Manufacturing, Inc., Sabetha, KS (US);
LaVon Wenger, Sabetha, KS (US);
Allan C. Spellmeier, Fairview, KS (US);
Philip B. Wiltz, Sabetha, KS (US);
Wenger Manufacturing Inc., Sabetha, KS (US);
Abstract
High thermal transfer, hollow core extrusion screws () include elongated hollow core shafts () equipped with helical fighting () along the lengths thereof. The fighting () may also be of hollow construction which communicates with the hollow core shafts (). Structure () is provided for delivery of heat exchange media (e.g., steam) into the hollow core shafts () and the hollow fighting (). The fighting () also includes a forward, reverse pitch section (). The extrusion screws () are designed to be used as complemental pairs as a part of twin screw processing devices (), and are designed to impart high levels of thermal energy into materials being processed in the devices (), without adding additional moisture.