Baker Hughes has patented a method for reclaiming and remagnetizing permanent magnet motors used in electric submersible pumps. The process involves heating the rotor to remove residual oil and water, cooling it, and then remagnetizing the permanent magnets. GlobalData’s report on Baker Hughes 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 Baker Hughes, Oil well fracking was a key innovation area identified from patents. Baker Hughes's grant share as of May 2024 was 50%. Grant share is based on the ratio of number of grants to total number of patents.
Reclaiming and remagnetizing permanent magnet rotors for motors
A recently granted patent (Publication Number: US12002610B2) outlines a method for reclaiming a permanent magnet rotor for an electric motor. The process involves removing the rotor from the motor, heating it to a specific temperature range, cooling it, and remagnetizing the permanent magnets within the rotor. The temperature range used in the method is crucial, as it ensures the demagnetization of the magnets without exceeding their Curie temperature. Additionally, the method includes steps such as cleaning the rotor's surfaces and testing it against desired specifications before remagnetization.
Furthermore, the patent describes a unique magnetization fixture designed for magnetizing permanent magnet rotors of electric motors. This fixture includes coils of magnet wire connected in series to form a multi-pole electromagnet, allowing for precise magnetization of individual subsections of the rotor. The fixture's design enables the magnetization of rotors with lengths greater than the fixture itself, ensuring thorough magnetization across the entire rotor assembly. Overall, the patented method and fixture provide a comprehensive solution for reclaiming and magnetizing permanent magnet rotors, enhancing the efficiency and performance of electric motors in various applications.
To know more about GlobalData’s detailed insights on Baker Hughes, buy the report here.
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GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. 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.
