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Gear bearing drive

  • US 8,016,893 B2
  • Filed: 06/21/2007
  • Issued: 09/13/2011
  • Est. Priority Date: 06/21/2006
  • Status: Expired due to Fees
First Claim
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1. A gear bearing drive comprising an assembly having an input stage and an output stage, the assembly comprising:

  • a sun gear sub-assembly comprising;

    a sun gear including a plurality of sun gear teeth extending radially outwardly and disposed circumferentially around the sun gear, anda motor having an external rotor disposed inside an interior region of the sun gear and concentrically surrounded by the sun gear teeth, the sun gear rotatable with the external rotor;

    a plurality of pinion sub-assemblies disposed to interface with and revolve around the sun gear sub-assembly, each pinion sub-assembly comprising an input pinion gear meshing with the sun gear and an output pinion gear, andan output ring gear disposed to mesh with the output pinion gear of each pinion sub-assembly.

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