Read this description of “rare earth motor” that doesn’t use battery. It’s a bold claim with limited details because it is patent pending. Has anyone replicated the results described here? Could we improve on them with new methods or materials?
“Attract-Repel Demo: We constructed an apparatus to demonstrate the simultaneous resultant attraction in the equatorial plane and the resultant repulsion in the polar plane between two permanent magnets with opposite poles facing one another. To reduce friction during motion, the permanent magnets were attached to carts with eight wheels. Four permanent magnets were positioned on each cart. The magnets were made of neodymium (NdFeB), grade 52, and measured 5.08 cm long, 2.54 cm wide and 1.27 cm thick. They were magnetized through their 1.27 cm thickness. Each magnet has a Brmax of 14,800 Gauss and pull force of 41.28 kg. To minimize magnetic interference, the carts and rails were made of aluminum alloy and the screws and nuts were made of brass.”
Read about the author, Sam Davis, “Editor-In-Chief of Power Electronics Technology magazine and website. He has 18 years experience in electronic engineering design and management, six years in public relations and 25 years as a trade press editor. He holds a BSEE from Case-Western Reserve University, and did graduate work at the same school and UCLA. Sam was the editor for PCIM, the predecessor to Power Electronics Technology, from 1984 to 2004. His engineering experience includes circuit and system design for Litton Systems, Bunker-Ramo, Rocketdyne, and Clevite Corporation.. Design tasks included analog circuits, display systems, power supplies, underwater ordnance systems, and test systems. He also served as a program manager for a Litton Systems Navy program.”
If true, what would it means for demand of permanent magnets?