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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.:

US 11548198 B1

PDFFull Text
Date of Patent:
Jan. 10, 2023

Filed:

Aug. 25, 2017

Single-screw extruder with hollow rotor member

Applicant:

Teknologian Tutkimuskeskus Vtt Oy, Espoo, FI;

Inventors:

Hannu Minkkinen, Tampere, FI;

Antti Ojala, Tampere, FI;

Kirsi Immonen, Tampere, FI;

Assignee:

TEKNOLOGIAN TUTKIMUSKESKUS VTT OY, Espoo, FI;

Attorney:

Nixon & Vanderhye PC

Primary Examiner:

Seyed Masoud Malekzadeh

Int. Cl.
CPC ...
B29C 48/395 (2019.01); B29B 7/42 (2006.01); B29B 7/90 (2006.01); B29C 48/68 (2019.01); B29C 48/56 (2019.01); B29C 48/59 (2019.01); B29C 48/51 (2019.01); B29C 48/625 (2019.01); B29C 48/685 (2019.01);
U.S. Cl.
CPC ...
B29C 48/397 (2019.02); B29B 7/425 (2013.01); B29B 7/429 (2013.01); B29B 7/90 (2013.01); B29C 48/56 (2019.02); B29C 48/59 (2019.02); B29C 48/681 (2019.02); B29C 48/51 (2019.02); B29C 48/625 (2019.02); B29C 48/688 (2019.02);
Abstract

A single-screw extruder (), and a method. The extruder () comprises—a cylindrical rotor member () having diameter (D) and length (L) and comprising a feeding zone (), —the rotor member () arranged in a barrel (), —the cylindrical surface of the rotor member () carrying cavity/cavities and/or projection(s) () arranged in helically extending rows, —the helically extending row(s) of the rotor member () having a pitch (P) and depth (d) in the feeding zone () of the rotor member, and the extruder () further compris-ing—a drive system () for the rotation of the rotor member () in the barrel (). The relation of the depth (d) to the diame-ter (D) of the rotor member, i.e. d:D, is not more than 1:20, and the relation of the pitch (P) of the rotor member to the di-ameter (D) of the rotor member, i.e. P:D, is not more than 1:4.

Find Patent Forward Citations

Minkkinen, Hannu. (2023). Single-screw extruder with hollow rotor member (U.S. Patent No. 11548198). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11548198

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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