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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 11813785 B1

PDFFull Text
Date of Patent:
Nov. 14, 2023

Filed:

Jul. 28, 2021

Extruder screw having paths within the screw, extruder, and extrusion method

Applicant:

Shibaura Machine Co., Ltd., Tokyo, JP;

Inventors:

Akiyoshi Kobayashi, Fuji, JP;

Shigeyuki Fujii, Numazu, JP;

Takafumi Sameshima, Mishima, JP;

Assignee:

Shibaura Machine Co., Ltd., Tokyo, JP;

Attorney:

DLA PIPER LLP US

Primary Examiner:

Charles Cooley

Int. Cl.
CPC ...
B29C 48/51 (2019.01); B29C 48/57 (2019.01); B29C 48/67 (2019.01); B29C 48/285 (2019.01); B29C 48/68 (2019.01); B29C 48/25 (2019.01); B29B 7/48 (2006.01); B29C 48/395 (2019.01); B29C 48/80 (2019.01); B29B 7/82 (2006.01); B29C 48/40 (2019.01); B29C 48/63 (2019.01); B29C 48/03 (2019.01); B29C 48/55 (2019.01); B29C 48/53 (2019.01); B29C 48/54 (2019.01); B29K 101/12 (2006.01); B29K 105/00 (2006.01);
U.S. Cl.
CPC ...
B29C 48/51 (2019.02); B29B 7/483 (2013.01); B29B 7/488 (2013.01); B29B 7/489 (2013.01); B29C 48/2511 (2019.02); B29C 48/288 (2019.02); B29C 48/57 (2019.02); B29C 48/67 (2019.02); B29C 48/681 (2019.02); B29B 7/823 (2013.01); B29B 7/826 (2013.01); B29C 48/03 (2019.02); B29C 48/397 (2019.02); B29C 48/402 (2019.02); B29C 48/53 (2019.02); B29C 48/54 (2019.02); B29C 48/55 (2019.02); B29C 48/63 (2019.02); B29C 48/832 (2019.02); B29C 48/834 (2019.02); B29K 2101/12 (2013.01); B29K 2105/25 (2013.01);
Abstract

A conveyance portion, a barrier portion, and a path are provided at places of a portion of a screw main body in which a kneading portion is provided. In at least one of the places, an entrance is opened to cause raw materials, conveyance of which is limited by a barrier portion to increase pressure on the raw materials, to flow in. The raw materials flowing in from the entrance flow through the path in the opposite direction to a conveyance direction of the conveyance portion. An exit is opened in an outer circumferential surface of the screw main body at a position outside the conveyance portion in which the entrance is opened.

Find Patent Forward Citations

Quick Actions:

Kobayashi, Akiyoshi. (2023). Extruder screw having paths within the screw, extruder, and extrusion method (U.S. Patent No. 11813785). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11813785

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

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