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Continuously variable planetary gear set

  • US 7,201,695 B2
  • Filed: 02/03/2005
  • Issued: 04/10/2007
  • Est. Priority Date: 08/11/2003
  • Status: Expired due to Term
First Claim
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1. A transmission comprising:

  • a plurality of traction rollers distributed radially about a longitudinal axis of the transmission, each ball having a tiltable axis about which it rotates;

    an input disc in contact with the traction rollers;

    an output disc in contact with the traction rollers;

    an idler coaxial and rotatable about the longitudinal axis and in contact with the traction rollers;

    a speed signaling section on one of the input disc, output disc, traction rollers, or idler;

    a speed detecting part cooperating with the speed signaling section to detect the speed of one of the input disc, output disc, traction rollers, or idler; and

    a cage adapted to maintain a radial and axial orientation of the balls about the idler, wherein the cage is further adapted to rotate about the longitudinal axis and wherein the cage comprises;

    a disc-shaped input stator positioned between the balls and the input disc;

    a disc-shaped output stator positioned between the balls and the output disc; and

    a plurality of spacers adapted to rigidly connect the stators.

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