Method and device for screening materials, such as aggregates and/or soils
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United States of America Patent
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Sep 23, 2014
Grant Date -
Apr 18, 2013
app pub date -
Oct 10, 2012
filing date -
Oct 13, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A method and a device for screening aggregates and/or soils with a screening deck, where each point of the screening deck revolves continuously in the same rotating direction along a circular path. This movement is effected by the fastening frame of the screening deck being bearing-mounted upon at least two eccentric shafts, where each eccentric shaft is in turn bearing-mounted on a device body with bearings, through the midpoints of which extends a rotation axis of the eccentric shaft. Additionally, a throw axis spaced from the rotation axis of the eccentric shaft extends through the midpoints of bearings present between each eccentric shaft and the fastening frame, so that when the device is in operation, the throw axis revolves around the rotation axis along a circular path continuously in the same direction. All mass forces of movable structural components have been balanced with respect to rotation axes.
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