ELECTRIC DEVICE DRIVE ASSEMBLY AND COOLING SYSTEM FOR ELECTRIC DEVICE DRIVE
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United States of America Patent
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N/A
Issued Date -
Apr 18, 2013
app pub date -
Oct 12, 2012
filing date -
Oct 12, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Drive assemblies for electric devices, such as vehicles, include an electric motor that includes a rotor assembly and a stator assembly positioned within the rotor assembly. The stator assembly is fixed to a stationary axle and includes a pole and a coil around the pole. The rotor assembly includes a housing to which a plurality of magnets are attached. The rotor assembly is supported on the stationary axle by bearings. A drive mechanism, such as a sprocket, pulley or gear is provided on the housing of the rotor assembly and rotates with the housing. In various embodiments, the stationary axle includes an internal bore for receiving coolant, a longitudinal rib within the internal bore, and longitudinal channels in its outer surface.
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