07204777 is referenced by 138 patents and cites 159 patents.

A continuously variable planetary gear set is described having a generally tubular idler, a plurality of balls distributed radially about the idler, each ball having a tiltable axis about which it rotates, a rotatable input disc positioned adjacent to the balls and in contact with each of the balls, a rotatable output disc positioned adjacent to the balls opposite the input disc and in contact with each of the balls such that each of the balls makes three-point contact with the input disc, the output disc and the idler, and a rotatable cage adapted to maintain the axial and radial position of each of the balls, wherein the axes of the balls are oriented by the axial position of the idler.

Title
Continuously variable planetary gear set
Application Number
11/51052
Publication Number
7204777 (B2)
Application Date
February 3, 2005
Publication Date
April 17, 2007
Inventor
Robert A Smithson
Cedar Park
TX, US
David J Allen
Santa Cruz
CA, US
Donald C Miller
Fallbrook
CA, US
Agent
Knobbe Martens Olson & Bear
Assignee
Fallbrook Technologies
CA, US
IPC
F16H 15/48
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