Helical bar concave
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United States of America Patent
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Nov 20, 2012
Grant Date -
Jun 16, 2011
app pub date -
Dec 11, 2009
filing date -
Dec 11, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A helical bar concave including a grate having helical mounting framework and helical cutouts to form a percent open area having a helical geometry. Configurable and segmented rub bars are mounted in a helical fashion to a cylindrical helical surface of the grate. The helical geometry in combination with configurable rub bars mounted in a helical fashion results in a configurable helical bar concave in which the number or aggressiveness of the threshing surface on the inside radius of the grate may be changed and/or the rub bars may be moved to the outside of the grate to change the percent open area and hence the separation characteristics of the concave.
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Cited Art Landscape
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