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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 10654225 B1

PDFFull Text
Date of Patent:
May. 19, 2020

Filed:

May. 24, 2017

Method and a thermoplastic blade

Applicant:

Airbus Helicopters, Marignane, FR;

Inventor:

Patrick Boschet, Montigny le Bretonneux, FR;

Assignee:

AIRBUS HELICOPTERS, Marignane, FR;

Attorney:

Brooks Kushman P.C.

Primary Examiner:

Matthew J Daniels

Assistant Examiner:

Andrew L Swanson

Int. Cl.
CPC ...
B29C 70/02 (2006.01); B29C 35/02 (2006.01); B29C 70/34 (2006.01); F03D 1/06 (2006.01); B29D 99/00 (2010.01); B29C 35/08 (2006.01); B29L 31/08 (2006.01); B29C 65/36 (2006.01); B29C 65/34 (2006.01); B29K 71/00 (2006.01); B29K 105/16 (2006.01);
U.S. Cl.
CPC ...
B29C 70/025 (2013.01); B29C 35/0272 (2013.01); B29C 35/0805 (2013.01); B29C 70/34 (2013.01); B29D 99/0025 (2013.01); F03D 1/0675 (2013.01); B29C 65/34 (2013.01); B29C 65/3604 (2013.01); B29C 65/3676 (2013.01); B29C 2035/0811 (2013.01); B29K 2071/00 (2013.01); B29K 2105/16 (2013.01); B29K 2995/0008 (2013.01); B29L 2031/08 (2013.01); B29L 2031/082 (2013.01); F05B 2280/4007 (2013.01); Y02E 10/721 (2013.01); Y02P 70/523 (2015.11);
Abstract

A method of fabricating a blade. The blade comprises subassemblies made of thermoplastic composite materials, each subassembly comprising an internal arrangement and at least one external arrangement, each internal arrangement comprising a stack of intermediate layers comprising reinforcing fibers impregnated with a semicrystalline thermoplastic matrix, each external arrangement comprising at least one surface layer comprising reinforcing fibers impregnated with an alloy of a semicrystalline thermoplastic polymer and of an amorphous thermoplastic polymer. An assembly film comprising an amorphous thermoplastic material and a ferromagnetic member is interposed between two surface layers of two distinct subassemblies that are to be assembled together by a method of local heating by induction.

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