Coupling device and agricultural machine comprising such a device
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United States of America Patent
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-
Aug 9, 2016
Grant Date -
Apr 23, 2015
app pub date -
Jun 5, 2013
filing date -
Jun 25, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A coupling device for an agricultural machine including a support for hitching to a tractor and at least one arm articulated to the support and protruding from the support in a direction parallel to a direction of advance of the tractor, the arm carrying, in an articulated manner, a chassis carrying a work element having a cutting angle relative to the ground to allow fine control of the cutting angle during movements of the work element. The coupling device further includes an upper connecting-rod, a lower connecting-rod, and a central connecting-rod, each of the upper and lower connecting-rods is articulated to the support and the central connecting-rod to form, projected in a vertical plane parallel to the direction of advance, a deformable quadrilateral, and the central connecting-rod is articulated to the chassis. An agricultural machine can include the coupling device.
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