US Patent 9137938 Agricultural implement with self-centering pivots

A self-centering pivot assembly for an agricultural implement having a tool bar is provided. The self-centering pivot assembly includes at least one spring, a bar segment operatively connected to one or more working tools of the agricultural implement, and a mounting assembly operatively connected between the tool bar and the bar segment. The self-centering pivot assembly further includes a pivot operatively connected to the bar segment and the at least one spring such that as the agricultural implements travels over the ground and the bar segment deviates laterally from a neutral position, the at least one spring temporarily compresses and urges the bar segment back towards the neutral position.