Latecoere has been granted a patent for an innovative assembly method for composite parts with a thermoplastic matrix. The method involves overlapping parts, heating the faces, inserting a holing spike, and using assembly ties made of composite material. This technique allows for strong and durable connections between composite parts. GlobalData’s report on Latecoere gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Latecoere, Fiber-reinforced material joining techniques was a key innovation area identified from patents. Latecoere's grant share as of January 2024 was 43%. Grant share is based on the ratio of number of grants to total number of patents.

Assembly method for composite parts using thermoplastic riveting

Source: United States Patent and Trademark Office (USPTO). Credit: Latecoere SA

A recently granted patent (Publication Number: US11878474B2) outlines an innovative assembly method for composite parts using a thermoplastic-matrix material, employing thermoplastic riveting. The method involves overlapping two parts with visible faces, heating these faces to melt the thermoplastic material, inserting holing spikes to create cylindrical bores, and inserting an assembly tie made of composite material with a thermoplastic matrix. The tie is then cut to the correct height, covered with non-holed heating panels, and compressed to consolidate the parts.

Furthermore, the patent claims detail additional features such as the assembly tie being made of thermoplastic material with a reinforcing element that complements the cylindrical bore shape, the automation of assembly steps for multiple parts simultaneously, and the use of a holing grid for efficient holing of parts using multiple holing spikes. These advancements in the assembly method aim to streamline the process, improve the structural integrity of composite parts, and enhance overall efficiency in manufacturing operations.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.