Planting – Drilling – Furrow opener
Reexamination Certificate
2007-05-15
2007-05-15
Novosad, Christopher J. (Department: 3641)
Planting
Drilling
Furrow opener
C111S167000, C111S194000, C172S574000, C172S701000
Reexamination Certificate
active
11451628
ABSTRACT:
An agricultural plough (1) including a longitudinally extending support member (2) having a forward portion to be attached to a vehicle to thereby enable the apparatus (1) to be towed by the vehicle; a generally “n” shaped frame (500) fixed to the support member (2) and including a pair of ends (505, 510) located on opposite longitudinal sides and spaced normal to the support member (2); a pair of axles (13, 14) attached to and extending laterally from the ends and providing a pair of laterally extending rotational axes, the axes being located on opposite sides of the member (2) and in a plane extending transversely normal to the member (2) and at an acute angle longitudinally so as to extend rearwardly down, the axes each being inclined by an acute angle of 6 to 12 degrees to a plane extending normal to the member (2) to diverge rearwardly; a plough disc (18, 20) supported on each axle to rotate about the rotational axes, with the discs (18, 20) and axles being configured so that the discs (18, 20) converge rearwardly and downwardly, the discs (18, 20) being displaced rearwardly from the forward portion; a wheel attached to the support member (2) and rotatable about an axis generally transverse of the support member (2), the wheel (12) being located rearwardly of the axles (13, 14); and structure connected to the support member (2) and to be attached to the vehicle, to urge the member downwardly so that the discs (18, 20) are urged into soil and the wheel (12) is urged into contact with a soil surface rearwardly of the discs (18, 20) so that upon forward movement of the vehicle with the discs (18, 20) engaged in the soil, each disc (18, 20) forms a separate groove and a corresponding ridge in the soil between the grooves, with the ridge being engaged by the wheel (12) to urge the soil to cover seeds located in the grooves.
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Ceekay Innovations Pty Ltd
Ladas and Parry LLP
Novosad Christopher J.
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