Nordex has filed a patent for a segmented wind turbine rotor blade design featuring pressure pieces between segments, connected to bolts for assembly. The pressure pieces allow for screwing force application via an assembly tool. Adjacent pressure pieces are rotated by 180°. GlobalData’s report on Nordex 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 Nordex, Aerial inspection drones was a key innovation area identified from patents. Nordex's grant share as of January 2024 was 66%. Grant share is based on the ratio of number of grants to total number of patents.

Segmented wind turbine rotor blade with pressure pieces for assembly

Source: United States Patent and Trademark Office (USPTO). Credit: Nordex SE

A wind turbine rotor blade patent application (Publication Number: US20240026856A1) describes a unique design for connecting rotor blade segments using connecting bolts and sleeve-shaped pressure pieces. These pressure pieces, mounted on the connecting bolts, feature cylindrical sections and tool engaging sections for assembly tools. The adjacent pressure pieces are rotated by 180° to create specific axial regions for effective connection. The design ensures a secure form fit connection, allowing for the application of screwing force to the connecting bolts. Additionally, the patent includes details on the dimensions of the pressure pieces, clearances between them, and the method for joining the rotor blade segments using the described components.

Furthermore, the patent application includes claims related to a kit for connecting rotor blade segments, individual pressure pieces for this purpose, and a method for joining the segments using the described components. The kit comprises connecting bolts and pressure pieces, while the individual pressure piece features a sleeve-shaped body with cylindrical and tool engaging sections. The method outlined in the patent involves partially screwing the connecting bolts, mounting the pressure pieces in a form-fit manner, and using an assembly tool to secure the connection. The method also includes steps for aligning the assembly tool and screwing the connecting bolts effectively. Overall, the patent application presents a detailed and innovative approach to connecting wind turbine rotor blade segments, emphasizing secure connections and efficient assembly processes.

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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.