Differential motion conveyor drive
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United States of America Patent
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Aug 5, 2003
Grant Date -
N/A
app pub date -
Jan 2, 2002
filing date -
Jan 2, 2002
priority date (Note) -
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Abstract
A differential motion conveyor drive includes at least three pairs of drive shafts carrying eccentric weights that are selected to correspond to the terms of a Fourier series in order to achieve optimal conveying speed and efficiency. To approximate the Fourier series terms, in one preferred embodiment, each of the first pair of shafts carries a weight and rotates at a predetermined operating speed .omega.. Each of the second pair of shafts carries a smaller weight and rotates at an operating speed 2.omega., and each of the third pair of shafts carries an even smaller weight and rotates at an operating speed 3.omega.. An appropriate weight distribution results in a differential motion conveyor drive that consistently produces a higher conveying speed compared to that produced by a prior art drive throughout a range of operating speeds.
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