Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 19, 2019
Patent Application Number
15298066
Date Filed
October 19, 2016
Patent Citations Received
Patent Primary Examiner
Patent abstract
A combine including a frame, power unit and a crop gathering and processing device. A grain tank is mounted on the frame. An elongated closed end tube is vertically oriented within the grain tank and has a plurality of uniformly spaced openings along its length. A pneumatic pump pressurizes the interior of the tube. A pressure sensor senses the interior pressure of the elongated tube, so that grain building up therein selectively covers the plurality of openings to cause a proportionate increase in air pressure.
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