Shaking apparatus
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United States of America Patent
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-
Aug 30, 1988
Issued Date -
N/A
app pub date -
Mar 12, 1986
filing date -
Nov 15, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A variably unbalanced rotating mechanism comprising a frame, a main shaft having a longitudinal axis and supported on the frame for rotation about the longitudinal axis, a drive for rotating the main shaft, first and second eccentric weights mounted for rotation coaxially with the main shaft, and a mechanism for rotating the weights in common with the main shaft and for selectively rotating the weights in opposite directions relative to each other and relative to the main shaft and independently of main shaft rotation.
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