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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 10611104 B1

PDFFull Text
Date of Patent:
Apr. 07, 2020

Filed:

Jun. 15, 2017

Heating elements for repair of molding defects for carbon fiber thermoplastic composites

Applicant:

GM Global Technology Operations Llc, Detroit, MI (US);

Inventors:

Xiaosong Huang, Novi, MI (US);

Hamid G. Kia, Bloomfield Hills, MI (US);

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);

Attorney:

Harness, Dickey & Pierce, P.L.C.

Primary Examiner:

Philip C Tucker

Assistant Examiner:

Brian R Slawski

Int. Cl.
CPC ...
B29C 65/00 (2006.01); B29C 65/70 (2006.01); B29C 73/12 (2006.01); B29C 65/22 (2006.01); B29C 73/34 (2006.01); B29C 43/02 (2006.01); B29C 35/02 (2006.01); B29C 35/08 (2006.01); B32B 37/00 (2006.01); B32B 27/12 (2006.01); H05B 3/36 (2006.01); H05B 3/18 (2006.01); H05B 3/38 (2006.01); B29C 73/30 (2006.01); B29C 43/18 (2006.01); B29C 43/32 (2006.01); B29C 43/22 (2006.01); B29C 43/52 (2006.01); B29K 105/06 (2006.01);
U.S. Cl.
CPC ...
B29C 73/12 (2013.01); B29C 43/18 (2013.01); B29C 43/222 (2013.01); B29C 43/32 (2013.01); B29C 65/22 (2013.01); B29C 66/8122 (2013.01); B29C 66/81262 (2013.01); B29C 73/30 (2013.01); B29C 73/34 (2013.01); B29C 43/52 (2013.01); B29C 65/70 (2013.01); B29C 66/301 (2013.01); B29C 66/721 (2013.01); B29C 66/73921 (2013.01); B29C 2035/0811 (2013.01); B29K 2105/06 (2013.01); B29K 2883/00 (2013.01); B32B 27/12 (2013.01);
Abstract

Methods of repairing a manufacturing defect in a molded polymeric composite structure are provided. A polymeric patch may optionally be disposed over a defect on a first contoured surface of the molded polymeric composite structure having the defect. A heating element that defines a second contoured surface complementary with at least a portion of the first contoured surface is applied over the polymeric patch. The heating element includes an electrically conductive layer that includes a fabric and a thermoset polymer. The polymeric patch is heated with the heating element, where the heating element has a substantially uniform temperature across the second contoured surface so that the polymeric patch fills the defect. Methods of making the customized heating elements and the customized heating elements are also provided.

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