Non-parallel four-bar linkage for suspending an agricultural implement header
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United States of America Patent
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Jun 14, 2011
Grant Date -
Aug 5, 2010
app pub date -
Apr 14, 2010
filing date -
Oct 30, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A suspension system for agricultural implements having at least one floating head using a four-bar linkage and permitting the floating head to accommodate variations in ground surface elevation in a lateral or transverse direction. By permitting the floating head to float, a more consistent cutting height is realized when ground surface elevation varies in a transverse direction. A main frame is provided to which the ground engaging wheels are attached. A sub-frame is connected to the main frame via the four-bar linkage and the linkage arms of the four-bar linkage are not parallel to one another as viewed from above. The linkage arms of the four-bar linkage are pivotally attached to the main frame and sub-frame by spherical bearings.
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