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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 11820062 B1

PDFFull Text
Date of Patent:
Nov. 21, 2023

Filed:

Jun. 23, 2021

Extrusion methods wherein material is guided through a passage crossing over between adjacent cylindrical bodies

Applicants:

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

Hsp Technologies Inc., Ibaraki, JP;

Inventors:

Akiyoshi Kobayashi, Fuji, JP;

Shigeyuki Fujii, Numazu, JP;

Takafumi Sameshima, Mishima, JP;

Hiroshi Shimizu, Tsukuba, JP;

Assignees:

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

HSP Technologies Inc., Ibaraki, JP;

Attorney:

DLA PIPER LLP US

Primary Examiner:

Charles Cooley

Int. Cl.
CPC ...
B29C 48/51 (2019.01); B29C 48/49 (2019.01); B29C 48/40 (2019.01); B29B 7/42 (2006.01); B29B 7/48 (2006.01); B29B 7/84 (2006.01); B29C 48/57 (2019.01); B29C 48/385 (2019.01); B29C 48/76 (2019.01); B29B 7/74 (2006.01); B29C 48/395 (2019.01); B29B 7/82 (2006.01); B29C 48/00 (2019.01); B29C 48/405 (2019.01); B29K 33/00 (2006.01); B29K 69/00 (2006.01);
U.S. Cl.
CPC ...
B29C 48/49 (2019.02); B29B 7/422 (2013.01); B29B 7/426 (2013.01); B29B 7/429 (2013.01); B29B 7/483 (2013.01); B29B 7/487 (2013.01); B29B 7/489 (2013.01); B29B 7/7461 (2013.01); B29B 7/845 (2013.01); B29C 48/385 (2019.02); B29C 48/402 (2019.02); B29C 48/51 (2019.02); B29C 48/57 (2019.02); B29C 48/766 (2019.02); B29B 7/826 (2013.01); B29C 48/023 (2019.02); B29C 48/397 (2019.02); B29C 48/405 (2019.02); B29K 2033/12 (2013.01); B29K 2069/00 (2013.01);
Abstract

A screw includes a screw main body, a conveyance portion conveying a raw material, and a passage provided in the screw main body. The passage includes a first passage element, a second passage element, and a third passage element. The screw main body has a plurality of cylindrical bodies arranged in an axial direction of the rotating shaft. At least a portion of the conveyance portion is formed on outer peripheral surfaces of the cylindrical bodies adjacent to each other, and the passage is formed in the cylindrical body so as to cross over between the adjacent cylindrical bodies.

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