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US 12,543,618 B2Granted
Retractable spike tooth harrow for large field cultivator
AssigneeCNH Industrial America LLC
InventorJason Eric Andrews
Life of this patent
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Abstract
A spike tooth harrow of a tillage implement includes a plurality of arms configured to couple to a frame section of the tillage implement. The spike tooth harrow also includes a plurality of bars coupled to the plurality of arms, wherein each bar of the plurality of bars includes a plurality of spikes angled relative to a direction of travel of the tillage implement, the plurality of bars are coupled to the plurality of arms via cables, and the spike tooth harrow is configured to extend and to retract the plurality of bars relative to the plurality of arms.
Claims13
A tillage implement, comprising:
- a center frame section;
- a wing frame section coupled to the center frame section;
- and
- a spike tooth harrow coupled to the wing frame section, comprising:
- a plurality of arms coupled to the wing frame section;
- and
- a plurality of bars coupled to the plurality of arms, wherein each bar of the plurality of bars comprises a plurality of spikes angled relative to a direction of travel of the tillage implement, the plurality of bars are coupled to the plurality of arms via cables, and the spike tooth harrow is configured to extend and to retract the plurality of bars relative to the plurality of arms;
- wherein each arm of the plurality of arms comprises a hydraulic cylinder disposed within, and the cables are coupled to an end of the hydraulic cylinder;
- wherein each arm of the plurality of arms comprises a top wall, and a first side wall and a second side wall flanking the top wall, and the first side wall comprises a slot extending along a portion of the first side wall relative to a longitudinal axis of a respective arm of the plurality of arms that the hydraulic cylinder is disposed within;
- and
- wherein each arm of the plurality of arms comprises a pin coupled to the end of the hydraulic cylinder, the pin extends out of the slot, and the cables are coupled to the pin.
8 more elements
A spike tooth harrow of a tillage implement, comprising:
- a plurality of arms configured to couple to a frame section of the tillage implement;
- and
- a plurality of bars coupled to the plurality of arms, wherein each bar of the plurality of bars comprises a plurality of spikes angled relative to a direction of travel of the tillage implement, the plurality of bars are coupled to the plurality of arms via cables, and the spike tooth harrow is configured to extend and to retract the plurality of bars relative to the plurality of arms;
- wherein each arm of the plurality of arms comprises a hydraulic cylinder disposed within, and the cables are coupled to an end of the hydraulic cylinder;
- wherein each arm of the plurality of arms comprises a top wall, and a first side wall and a second side wall flanking the top wall, and the first side wall comprises a slot extending along a portion of the first side wall relative to a longitudinal axis of a respective arm of the plurality of arms that the hydraulic cylinder is disposed within;
- and
- wherein each arm of the plurality of arms comprises a pin coupled to the end of the hydraulic cylinder, the pin extends out of the slot, and the cables are coupled to the pin.
4 more elements
A method for controlling extension and retraction of a spike tooth harrow of a tillage implement, comprising:
- adjusting a stroke length of a respective hydraulic cylinder disposed within each arm of a plurality of arms of the spike tooth harrow, wherein the plurality of arms are coupled to a plurality of bars, the plurality of bars are coupled to the plurality of arms via cables each bar of the plurality of bars comprises a plurality of spikes angled relative to a direction of travel of the tillage implement, and the plurality of bars are coupled to an end of each respective hydraulic cylinder via cables, wherein each arm of the plurality of arms comprises a top wall, and a first side wall and a second side wall flanking the top wall, and the first side wall comprises a slot extending along a portion of the first side wall relative to a longitudinal axis of a respective arm of the plurality of arms that the respective hydraulic cylinder is disposed within, and wherein each arm of the plurality of arms comprises a pin coupled to the end of the respective hydraulic cylinder, the pin extends out of the slot, and the cables are coupled to the pin;
- and
- in response to adjusting the stroke length, adjusting a distance between the plurality of arms and the plurality of bars.
Dependencies are inferred from the claim text.