Epicyclic transmission for zero turning radius vehicles
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United States of America Patent
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N/A
Issued Date -
N/A
app pub date -
Nov 3, 2003
filing date -
Dec 7, 2001
priority date (Note) -
Abandoned
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Abstract
A drive shaft rotated by a drive gear is coupled to an epicyclic gear arrangement which is rotatable as a unit about the drive shaft's longitudinal axis, as well as about its own axis. A driven gear is rotatably mounted on the on the drive shaft between the drive gear and the gear arrangement. Facing surfaces of the drive and driven gears are provided with annular concavities. A pivotally adjustable friction disk extends between, and in contact with, the concave surfaces. The opposite side of the driven gear is operatively connected to the gear arrangement. When the drive shaft is rotated, the gear arrangement is rotated about its own axis in response to drive shaft rotation and is rotated about the drive shaft's axis in accordance with the position of the friction disk. The speed and direction of the wheel-driving output are thus controlled.
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