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Continuously variable planetary gear set

  • US 7,462,123 B2
  • Filed: 08/07/2007
  • Issued: 12/09/2008
  • Est. Priority Date: 08/11/2003
  • Status: Expired due to Fees
First Claim
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1. A power train comprising:

  • a first source of rotational power;

    an electric generator;

    a plurality of balls, each ball having an internal axis of rotation configured to tilt in operation;

    a first disc in contact with the balls, the first disc configured to be nonrotatable;

    a second disc in contact with the balls;

    a rotatable cage adapted to support the plurality of balls axially and radially, the rotatable cage coupled to the first source of rotational power; and

    an idler in contact with the balls and located radially inward of the balls, the idler coupled to the electric generator.

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