A - Human Necessities – 01 – C
Patent
A - Human Necessities
01
C
A01C 7/00 (2006.01) A01C 7/08 (2006.01) A01C 7/10 (2006.01) A01C 7/20 (2006.01)
Patent
CA 2398143
A system for maintaining an appropriate air flow in an air stream in an air seeder. A fan provides an air stream to carry agricultural materials for distribution across a width of a seeding implement. A tank contains a granular agricultural material and a metering device dispenses the material into the air stream. The system is calibrated such that a known weight of material is dispensed for each revolution of the metering device whereby the rotational speed of the metering device multiplied by the known weight per revolution results in a known per minute rate of agricultural material being dispensed into the air stream. A microprocessor is programmed to derive an appropriate fan speed for the per minute rate of agricultural material being dispensed and send a signal to a fan control to adjust the speed of the fan to correspond to the appropriate fan speed.
Bourgault Industries Ltd.
Macpherson Leslie & Tyerman Llp
LandOfFree
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