Screening apparatus
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United States of America Patent
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Mar 31, 1998
Grant Date -
N/A
app pub date -
Oct 25, 1995
filing date -
Mar 3, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention is a screening apparatus for classifying material of different sizes. A screen is rotatably mounted on a frame for rotation around a first axis which is angled upwardly away from the horizontal, at an angle of from 0 to 30 degrees. The screen is symmetrical about the axis and has an open upper inlet end and a lower outlet end. The screen has a cylindrical portion extending from the inlet end towards the outlet end, having a diameter larger than its length, and a conical portion extending from the cylindrical portion towards the outlet end, tapering inwardly to a central outlet opening, the lowest point of the outlet opening being substantially higher than the lowest point of the screen. The frame is pivotally mounted on a trailer for pivoting about a longitudinal axis near a lower side edge of the trailer. The open inlet end of the screen faces one side of the trailer. A screened discharge conveyor and an oversize conveyor carried the screened and oversized material, respectively, away from the screen.
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