VARIATOR
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United States of America Patent
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app pub date -
Mar 22, 2013
filing date -
Jan 23, 2012
priority date (Note) -
Abandoned
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Abstract
A toroidal variator having an input surface and an output surface coaxially mounted for rotation on a shaft defining a variator axis and two rollers in driving engagement with the input and output surfaces, a take-off drive operatively engaged with the output surface and disposed radially of the variator axis whereby a radial contact force perpendicular to and intersecting the variator axis is generated and wherein the rollers are located such that the points of contact of the rollers with the input and output surfaces at one particular ratio within the operating range of the variator lie generally in a plane which is substantially perpendicular to the direction of the radial contact force. This plane lies on or close to the neutral axis of bending of the variator structure whereby both normal contact loads between the discs and the two rollers will be generally the same.
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