Patent ID: 7743842
Filing Date: 2010-06-29
Classification: A01B

Abstract:
1. A marker assembly for use with an agricultural implement to place a marker furrow in a surface, comprising: a marker frame having a first end adapted to be connected to the agricultural implement, wherein the marker frame includes a set of parallel linkages that may be retracted and extended by an actuator, and wherein the parallel linkages are fully extended when the actuator is in a fully extended position; and a float linkage connected to an outer knuckle member and said actuator; said float linkage bolted to a pair of arms formed with and extending upwardly from said outer knuckle member; said bolt forms a pivot that permits limited vertical movement of the marker frame when the actuator is in the fully extended position to allow the vertical position of the marker frame relative to the agricultural implement to vary during changes in the contour of the surface; wherein a bottom surface of said float linkage limits pivot displacement of said float linkage.