US 7,614,353 B2
	Sowing device
Josef Hainzl, Andorf (Austria); Christian Stiegler, Berg im Attergau (Austria); Franz Spiesberger, Lohnsburg (Austria); Andreas Egger, Raab (Austria); Franz Diermaier, Taiskirchen (Austria); and Walter Dullinger, Neuhofen im Innkreis (Austria)
Assigned to Wintersteiger AG, Ried im Innkreis (Austria)
Filed on Oct. 23, 2008, as Appl. No. 12/288,799.
Claims priority of application No. A 1726/2007 (AT), filed on Oct. 24, 2007.
Prior Publication US 2009/0107369 A1, Apr. 30, 2009
Int. Cl. A01C 7/00 (2006.01); A01C 15/00 (2006.01)

U.S. Cl. 111—199  [111/200; 111/903; 111/904; 111/921; 111/922]

4 Claims

1. A sowing device having a travelling framework (2), which comprises a storage roll (3) for a seed strip (4) equipped with individual grains (5) of a seed, and an unwinding unit (6) for the seed strip (4) drivable as a function of the travel distance, wherein a sensor (15) for the individual grains (5) in the seed strip (4) is provided in the area of the seed strip section (14) between the unwinding unit (6) and a ground-proximal deflection roll (8), and a control unit (16), connected to the sensor (15) and to a travel distance encoder (18), activates the drive (17) of the unwinding unit (6) as a function of the difference between an actual location of the seed grains (5) detected by the sensor (15) and a setpoint location predefinable via use of the travel distance encoder (18).