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First ideas of a magnetic motor were put forward by Petrus Peregrinus de Maricourt in 1269, who imagined a toothed wheel that is continually moving by the force of magnets. [ 4 ] [ 5 ] A popular example of a magnet motor, although without rotating axis, was put forward by John Wilkins in 1670: A ramp with a magnet at the top, which pulled a ...
The motors performed well and led to nearly $1.7 million in sales in 1947. In 1950, Franklin introduced the first electric motor that was fully submersible. The new pump motors were quiet, resistant to freezing, smaller, easy to install, and had a high pumping capacity.
The company continued to use the Delco Remy brand for some products under license from General Motors. [ 3 ] In October of 2007 Remy Worldwide Holdings filed a voluntary prepackaged proceeding under chapter 11 of the US Bankruptcy Code and exited the proceedings in 2008.
Alnico is a NRE permanent magnetic material used in permanent magnet motor applications such as magnetic speed and flow sensors, electric generators, and consumer goods. These magnets exhibit weaker performance in comparison to NdFeB and SmCo counterparts but still maintain high coercivity and are far cheaper due to their lack of rare earth metals.
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Thermomagnetic motors (also known as Curie wheels, [1] Curie-motors [2] [3] and pyromagnetic motors [4]) convert heat into kinetic energy using the thermomagnetic effect, [5] i.e., the influence of temperature on the magnetic material magnetization.
1916 Owen Magnetic at Crawford Museum. The first Owen Magnetic was introduced at the 1915 New York auto show when Justus B. Entz's electric transmission was fitted to the Owen automobile: "R.M. Owen have leased the large new three story fireproof building at the corner of Fifth avenue and One Hundred and Forty-second street, New York, where they will build the new Owen Magnetic motor cars."
For the small size applications, correlated magnets can be used in positioning devices, consumer electronics, magnetic couplings, and vehicle attachment. [4] Potential applications include attach and release work-holding mechanisms, magnetic separators, fluid seals and valves, motor and motion control, factory automation, prosthetics, security devices, and power generation.