THREE SPEED GEARBOX FROM SINGLE PLANETARY GEARSET
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United States of America Patent
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Issued Date -
Dec 29, 2011
app pub date -
Jun 28, 2011
filing date -
Jun 29, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention is a three forward speed gearbox with reverse from a single planetary gearset. The forward speed ratios include a low gear, one to one, and overdrive. The reverse gear ratio is identical with the low gear. Forward rotation of the output shaft in first gear is accomplished by reversing the direction of the input motor. This is easily achieved from a bi-directional prime mover such as a hydraulic motor or electric motor. Another advantage of using a bi-directional prime mover is that the bi-directional rotation of the input shaft provides forward, reverse and back drive to accumulate energy in an accumulator.
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