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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 11679536 B1

PDFFull Text
Date of Patent:
Jun. 20, 2023

Filed:

Sep. 20, 2018

Method for molding composite material blade, composite material blade, and molding die for composite material blade

Applicant:

Mitsubishi Heavy Industries, Ltd., Tokyo, JP;

Inventors:

Ryoji Okabe, Tokyo, JP;

Masami Kamiya, Tokyo, JP;

Kentaro Shindo, Tokyo, JP;

Assignee:

MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;

Attorney:

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

Primary Examiner:

Andrew D Graham

Int. Cl.
CPC ...
B29C 44/18 (2006.01); B29C 44/14 (2006.01); B29C 44/34 (2006.01); B29C 70/20 (2006.01); B29C 70/46 (2006.01); B29C 70/54 (2006.01); B29C 70/56 (2006.01); F01D 5/14 (2006.01); F01D 5/28 (2006.01); B29K 105/04 (2006.01); B29K 105/08 (2006.01); B29L 31/08 (2006.01);
U.S. Cl.
CPC ...
B29C 44/14 (2013.01); B29C 44/18 (2013.01); B29C 44/3415 (2013.01); B29C 70/202 (2013.01); B29C 70/46 (2013.01); B29C 70/541 (2013.01); B29C 70/56 (2013.01); F01D 5/147 (2013.01); F01D 5/282 (2013.01); B29K 2105/04 (2013.01); B29K 2105/089 (2013.01); B29L 2031/08 (2013.01); F05D 2230/23 (2013.01); F05D 2300/603 (2013.01);
Abstract

A composite material blade molding method is for molding a composite material blade by curing a prepreg. The composite material blade has a back-side blade member and a belly-side blade member which are superposed and joined. The composite material blade molding method includes: a lamination step for forming a back-side laminate in a back-side molding die and forming a belly-side laminate in a belly-side molding die; an inner surface cowl plate disposition step for disposing an inner surface cowl plate for maintaining an inner space formed by the back-side laminate and the belly-side laminate; a die mating step for die-mating the back-side molding die and the belly-side molding die and disposing a foaming agent in the inner space maintained by the inner surface cowl plate; and a curing step for heating and expanding the foaming agent and heat-curing the back-side laminate and the belly-side laminate.

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