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Electromotive drives

  • US 8,550,949 B2
  • Filed: 12/18/2012
  • Issued: 10/08/2013
  • Est. Priority Date: 10/28/2005
  • Status: Active Grant
First Claim
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1. An electromotive device comprising:

  • a plurality of balls arranged angularly about an axis;

    a first disc in contact with the balls;

    a second disc in contact with the balls, wherein the first and second discs are positioned relative to one another on opposite sides of the plurality of balls;

    an idler in contact with the balls, the idler positioned radially inward of the balls;

    an electrical stator configured to rotate about said axis, wherein the electrical stator is directly coupled to one of the first disc, second disc, or idler;

    an electrical rotor configured to rotate about said axis, wherein the electrical stator is directly coupled to one of the first disc, second disc, or idler;

    wherein the electrical stator and the electrical rotor are configured relative to one another to together function as an electrical motor or as an electrical generator.

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