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Continuously variable planetary gear set

  • US 7,198,582 B2
  • Filed: 02/03/2005
  • Issued: 04/03/2007
  • Est. Priority Date: 08/11/2003
  • Status: Expired due to Term
First Claim
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1. A power transfer assembly comprising:

  • a plurality of balls distributed radially about a longitudinal axis of the power transfer assembly, each ball having a tiltable axis about which it rotates;

    an input disc in contact with the balls;

    an output disc in contact with the balls;

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

    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

    a housing having a case and a case cap, the case cap securely attached to the case, the case and case cap enclosing the idler, discs, and balls.

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