A - Human Necessities – 01 – B
Patent
A - Human Necessities
01
B
56/33, 341/97
A01B 69/00 (2006.01) A01B 69/04 (2006.01) A01D 41/127 (2006.01) A01D 45/02 (2006.01)
Patent
CA 1233220
ROW CROP HARVESTER GUIDANCE SYSTEM CONTROL CIRCUIT Abstract of the Disclosure A row crop harvester guidance system control circuit comprises a control valve for actuating a hydraulic cylinder connected to the tongue of a pull type harvester responsive either to first and second row crop sensing units mounted on opposite sides of a crop receiving passageway of the harvester or to a manual override switch. The row crop sensing units operate respectively a pair of sensor switches connected in circuit with the control valve. To prevent simultaneous generation of signals by both of the sensor switches, a pair of relays are connected in circuit with the sensor switches and the control valve. The manual override switch is connected in circuit with the relays and generates a control signal for operation of the hydraulic cylinder. The control signal has priority over any contradictory signal generated automatically by either of the sensor switches.
460864
Borden Ladner Gervais Llp
Deere & Company
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