Planetary gear transmission systems or components – Planet pinion is friction gear – Variable speed ratio
Reexamination Certificate
2007-04-03
2007-04-03
Estremsky, Sherry (Department: 3681)
Planetary gear transmission systems or components
Planet pinion is friction gear
Variable speed ratio
Reexamination Certificate
active
11051064
ABSTRACT:
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.
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Allen David J.
Miller Donald C.
Smithson Robert A.
Estremsky Sherry
Fallbrook Technologies Inc.
Knobbe Martens Olson & Bear LLP
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