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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 10300641 B1

PDFFull Text
Date of Patent:
May. 28, 2019

Filed:

Feb. 19, 2016

Cylindrical article made of fiber-reinforced resin material, injection molding mold thereof, and injection molding method

Applicant:

Enplas Corporation, Saitama, JP;

Inventor:

Kenjiro Taki, Saitama, JP;

Assignee:

ENPLAS CORPORATION, Saitama, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Michael C Miggins

Int. Cl.
CPC ...
B29C 45/00 (2006.01); B29C 45/26 (2006.01); B29C 45/27 (2006.01); B29K 105/12 (2006.01); B29K 309/08 (2006.01); B29C 45/33 (2006.01);
U.S. Cl.
CPC ...
B29C 45/0046 (2013.01); B29C 45/0005 (2013.01); B29C 45/0025 (2013.01); B29C 45/261 (2013.01); B29C 45/2708 (2013.01); B29C 45/33 (2013.01); B29C 2045/0027 (2013.01); B29C 2045/0031 (2013.01); B29K 2105/12 (2013.01); B29K 2309/08 (2013.01);
Abstract

A molten resin containing reinforcing fibers is injected from a gate into a cavity formed between an external piece and a center pin, and the molten resins containing the reinforcing fibers join together in the cavity. Thus, a weld line is formed in the molten resin containing the reinforcing fibers in the cavity. With this injection molding mold, moving the external piece with respect to the center pin changes an interval with the center pin. This forcibly causes the molten resin containing the reinforcing fibers in the cavity to flow and disturbs directions of the reinforcing fibers at the weld line. Consequently, the reinforcing fibers at the weld line and near the weld line in a cylindrical article tangle, improving strength at a part where the weld line is formed in the cylindrical article.

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Taki, Kenjiro. (2019). Cylindrical article made of fiber-reinforced resin material, injection molding mold thereof, and injection molding method (U.S. Patent No. 10300641). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10300641

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