3-mode front wheel drive and rear wheel drive continuously variable planetary transmission
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United States of America Patent
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Oct 3, 2017
Grant Date -
May 12, 2016
app pub date -
Jun 5, 2014
filing date -
Jun 6, 2013
priority date (Note) -
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Abstract
A front wheel drive or rear wheel drive continuously variable transmission is provided having an input shaft, an output shaft, a continuously variable tilting ball planetary variator, a compound planetary gearset assembly having first, second, third, and fourth rotating elements, and a plurality of torque transmitting devices. The compound planetary gearset assembly has a simple single pinion gearset and a compound double pinion gearset, having fixedly connected planetary carriers and fixedly connected ring gears, creating a joint planetary gear carrier and joint ring gear. The outer planetary gears engage the ring gear which drives the output shaft. Selective torque transmitting devices include clutches and braking clutches.
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