Screening bucket
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United States of America Patent
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Mar 25, 2014
Grant Date -
May 2, 2013
app pub date -
Jul 14, 2011
filing date -
Jul 15, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A screening bucket includes a support structure securable to the moving arm of an operating machine, a screening drum secured to that structure allowing it to rotate about an axis, a rotation unit for the screening drum and switching device for the rotation unit that switches the rotation unit between a first operating mode in which the screening drum is set in rotation at a substantially constant predetermined working speed and a second operating mode in which the rotation speed of the screening drum is reduced. The rotation unit further includes a detector assembly for detecting an angular position of the drum, cooperating with the switching device such that the rotation unit is automatically brought into the second operating mode when the drum is situated in the region of at least one predetermined portion of a revolution.
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