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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 12728588 B1

PDFFull Text
Date of Patent:
Sep. 08, 2026

Filed:

Jan. 15, 2025

3d printing-based device for shield tunnel lining formation

Applicant:

Zhejiang University City College, Hangzhou, CN;

Inventors:

Zhi Ding, Hangzhou, CN;

Ke Lou, Hangzhou, CN;

Yingtao Hu, Hangzhou, CN;

Shijie Zhang, Hangzhou, CN;

Zhen Wang, Hangzhou, CN;

Wenwei Zhou, Hangzhou, CN;

Huiping Tang, Hangzhou, CN;

Assignee:

Zhejiang University City College, Hangzhou, CN;

Attorney:
Primary Examiner:

Galen H Hauth

Assistant Examiner:

Mohamed K Ahmed Ali

Int. Cl.
CPC ...
B29C 64/118 (2017.01); B29C 64/259 (2017.01); B29C 64/295 (2017.01); B29C 64/30 (2017.01); B29C 64/393 (2017.01); B29C 71/02 (2006.01); B33Y 10/00 (2015.01); B33Y 40/00 (2020.01); B33Y 40/20 (2020.01); B33Y 50/02 (2015.01); B33Y 80/00 (2015.01); E21D 11/40 (2006.01); B29L 31/10 (2006.01);
U.S. Cl.
CPC ...
B29C 64/118 (2017.08); B29C 64/259 (2017.08); B29C 64/295 (2017.08); B29C 64/30 (2017.08); B29C 64/393 (2017.08); B29C 71/02 (2013.01); B33Y 10/00 (2014.12); B33Y 40/00 (2014.12); B33Y 40/20 (2020.01); B33Y 50/02 (2014.12); B33Y 80/00 (2014.12); E21D 11/40 (2013.01); B29L 2031/10 (2013.01);
Abstract

The present disclosure provides a 3D printing-based device for shield tunnel lining formation, which utilize a more rapid and efficient extrusion process. Solid printing materials are fed into a specially structured tunnel forming mechanism via a pneumatic conveying system. In conjunction with a lining cooling jacket and a shield machine's advancement control device, the 3D printing-based device enables continuous 3D printing of the tunnel lining.

Find Patent Forward Citations

Ding, Zhi. (2026). 3d printing-based device for shield tunnel lining formation (U.S. Patent No. 12728588). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12728588

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

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