Grain cleaning unit with cleaning airstream vented above grain pan for a combine harvester
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United States of America Patent
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Aug 1, 2017
Grant Date -
Sep 22, 2016
app pub date -
Nov 19, 2013
filing date -
Nov 28, 2012
priority date (Note) -
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Abstract
A combine harvester includes threshing apparatus, a grain pan and a cleaning unit. The grain pan is arranged to collect a grain/chaff stream from the threshing apparatus and is driven in an oscillating manner to convey the collected grain/chaff to a rear edge from where the grain/chaff stream falls into the cleaning unit. The cleaning unit includes a fan unit for generating an airstream directed through the grain/chaff stream falling from the rear edge and an airstream vented above the grain pan.
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