Device for cultivating soil or brushing debris having a drive shaft and plurality of gears
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United States of America Patent
Stats
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Jul 30, 2013
Grant Date -
Jan 10, 2013
app pub date -
Sep 14, 2012
filing date -
Feb 26, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A device for cultivating soil or brushing debris includes a frame supporting a transmission and a motor. The transmission defines a housing. A drive shaft, which is at least partially surrounded by the housing, is driven by the motor. The drive shaft is a worm having a first set of threads on an exterior surface thereof and a second set of threads on the exterior surface thereof. The first set of threads are spaced-apart from and angled with respect to the second set of threads. A first gear, a second gear, and a third gear are all supported at least partially within the housing. External teeth of the second gear are in constant engagement with external teeth of both the first and third gears. A shaft is fixedly attached to the second gear and an assembly is removable attached to the shaft.
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