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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 11759989 B1

PDFFull Text
Date of Patent:
Sep. 19, 2023

Filed:

Sep. 12, 2022

Optical sheet forming device and optical sheet forming method

Applicant:

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

Inventors:

Koji Mizunuma, Tokyo, JP;

Yuusuke Uno, Tokyo, JP;

Masahiro Tanada, Numazu, JP;

Assignee:

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

Attorney:

DLA PIPER LLP US

Primary Examiner:

Nahida Sultana

Assistant Examiner:

Debjani Roy

Int. Cl.
CPC ...
B29C 48/08 (2019.01); B29C 48/305 (2019.01); B29C 48/91 (2019.01); B29C 48/12 (2019.01); F21V 8/00 (2006.01); B29C 48/88 (2019.01); B29C 48/00 (2019.01); B29C 43/22 (2006.01); B29C 43/46 (2006.01); B29C 48/31 (2019.01); B29C 59/04 (2006.01); G02B 5/02 (2006.01); B29C 45/27 (2006.01); B29C 43/24 (2006.01); B29L 11/00 (2006.01);
U.S. Cl.
CPC ...
B29C 48/08 (2019.02); B29C 43/222 (2013.01); B29C 43/46 (2013.01); B29C 45/2737 (2013.01); B29C 48/0011 (2019.02); B29C 48/0022 (2019.02); B29C 48/12 (2019.02); B29C 48/305 (2019.02); B29C 48/313 (2019.02); B29C 48/91 (2019.02); B29C 48/914 (2019.02); B29C 59/04 (2013.01); G02B 5/02 (2013.01); G02B 6/0065 (2013.01); B29C 43/24 (2013.01); B29C 2043/466 (2013.01); B29K 2995/0026 (2013.01); B29L 2011/0075 (2013.01);
Abstract

An extruding unit, a forming roll unit and a thick portion forming mechanism are provided. The extruding unit has an ejecting slit which ejects sheet-shaped molten resin. The ejecting slit includes a standard gap portion and an enlarged gap portion. The standard gap portion is formed as a gap having a constant size. The enlarged gap portion is formed as a gap larger than the standard gap portion in a position corresponding to a thick portion. The thick portion forming mechanism forms one or several thick portions which are thicker than other portion, in the sheet-shaped molten resin continuously in the extrusion direction.

Find Patent Forward Citations

Mizunuma, Koji. (2023). Optical sheet forming device and optical sheet forming method (U.S. Patent No. 11759989). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11759989

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

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