Planter with four bar linkage
First Claim
1. An agricultural planter comprising:
- a frame;
at least one toolbar, wherein the toolbar includes first and second parallel bars, the first bar being coupled to the frame, and wherein the toolbar further includes first and second arms pivotally coupling its first and second parallel bars; and
an actuator coupled to one of the first and second arms in the toolbar for raising and rotating the second bar relative to the first bar to a first position, and for further raising and rotating the second bar relative to the first bar to a second position;
wherein the first or second arm is non-linear;
wherein one of the first and second arms is configured as a pair of elongated support members, said members pivotally coupling the first and second parallel bars; and
wherein the actuator is pivotally coupled at one end to a mounting member extending from the first bar and disposed between and pivotally coupled to the support member at a location away from the one end.
1 Assignment
0 Petitions
Accused Products
Abstract
An agricultural planter includes a frame and left and right wings pivotally attached to respective ends of the frame, all of which have a plurality of spaced row units. Each wing includes a forward bar pivotally coupled to the frame for forward folding for transport and an aft bar having row units attached thereto. Each aft bar is aligned parallel with and is pivotally coupled to its associated forward bar by at least one pair of first and second non-parallel coupling arms. A hydraulic cylinder coupled to the forward bar and to one of the pivoting arms raises the associated aft bar with row units above the soil to a first elevated position to facilitate turning the planter. Further extension of the hydraulic cylinder causes additional elevation, and substantial rotation of the aft bar and row unit combination to provide a low and narrow planter profile for transport and storage.
17 Citations
16 Claims
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1. An agricultural planter comprising:
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a frame; at least one toolbar, wherein the toolbar includes first and second parallel bars, the first bar being coupled to the frame, and wherein the toolbar further includes first and second arms pivotally coupling its first and second parallel bars; and an actuator coupled to one of the first and second arms in the toolbar for raising and rotating the second bar relative to the first bar to a first position, and for further raising and rotating the second bar relative to the first bar to a second position; wherein the first or second arm is non-linear; wherein one of the first and second arms is configured as a pair of elongated support members, said members pivotally coupling the first and second parallel bars; and wherein the actuator is pivotally coupled at one end to a mounting member extending from the first bar and disposed between and pivotally coupled to the support member at a location away from the one end. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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2. The agricultural planter of claim l wherein the actuator is disposed between the first and second parallel bars.
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16. An agricultural planter comprising:
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a frame; left and right wings comprising left and right toolbars, wherein each tool bar includes first and second parallel bars, the first bar of each tool bar being pivotally coupled to left and right portions of the frame respectively, and wherein each toolbar further includes first and second arms pivotally coupling the first and second parallel bars of each toolbar; and a first actuator coupled to one of the first and second arms of the left toolbar for raising and rotating the second bar of the left toolbar relative to the first bar of the left toolbar from a planting position to a first raised position, and for further raising and rotating the second bar of the left toolbar relative to the first bar of the left toolbar to a second raised position, and a second actuator coupled to one of the first and second arms of the right toolbar for raising and rotating the second bar of the right toolbar relative to the first bar of the right toolbar from a planting position to a first raised position, and for further raising and rotating the second bar of the right toolbar relative to the first bar of the right toolbar to a second raised position; wherein the first or second arm is non-linear; wherein one of the first and second arms is configured as a pair of elongated support members, said members pivotally coupling the first and second parallel bar; and wherein the first actuator is pivotally coupled at one end to a mounting member extending from the first bar and disposed between and pivotally coupled to the support members at a location away from the one end.
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Specification