HUB MOTOR
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United States of America Patent
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Issued Date -
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app pub date -
Aug 17, 2016
filing date -
Jul 1, 2016
priority date (Note) -
Granted
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Abstract
A gear motor for decreasing speed at a mechanical power output is provided with a housing; a supporting shaft through the housing; an electric motor in the housing and including a stator secured to the supporting shaft, and a rotor surrounding the stator and driven by the outer stator; a planetary gear train surrounding the rotor and including planet gear assemblies, a stationary ring gear at one end of the planet gear assemblies, and a driving ring gear at the other end of the planet gear assemblies. The driving ring gear rotates the housing either in one direction or in each of two opposite directions. The planet gear assemblies and the rotor form an annular rotor. Each planet gear assembly includes coaxial first and second planet gears. The first planet gear meshes the stationary ring gear. The second planet gear meshes the driving ring gear.
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