Roller screen and method for sorting materials by size
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United States of America Patent
Stats
-
Dec 28, 2004
Grant Date -
Feb 26, 2004
app pub date -
Aug 26, 2002
filing date -
Aug 26, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A screen roller is provided, configured to rotate as one of a plurality of rollers in a roller screen. The roller may include left hand spiral grooves formed in a first region of the surface of the roller, extending from one end of the roller toward the center, and right hand spiral grooves formed in a second region of the surface of the roller, extending from the other end of the roller toward the center of the roller. The roller may include a bumper strip around the central portion of the roller and configured to protect the roller from damage in the event the roller strikes a neighboring roller. The features on the surface of the roller may be formed on a sleeve that slides onto a shaft. The sleeve may be the length of the roller or may be one of a plurality of sleeves on the shaft.
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