Continuously variable planetary gear set

Details Continuously variable planetary gear set Continuously variable planetary gear set

2007-08-07

2010-02-02

Lewis, Tisha D (Department: 3655)

Planetary gear transmission systems or components

Planet pinion is friction gear

Variable speed ratio

C475S196000, C475S005000, C476S036000, C476S038000, C903S918000

Reexamination Certificate

active

07654928

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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