Patent ID: 6938700

Claim:
A knock-on sweep for a tillage implement including a wedge mount tool support for securing the sweep in a wedged position on a shank for forward movement through soil, and a retaining structure biased into engagement with the sweep when the sweep is in the wedged position to prevent the sweep from dislodging from the sweep support, the retaining structure movable against the bias for removing the sweep from the shank, the knock-on sweep comprising: a mounting portion adapted for wedging on the tool support having an uppermost edge; a central point located forwardly and below the mounting portion; forward edges extending outwardly and rearwardly from the central point; a top surface portion extending upwardly and rearwardly from the point to the mounting portion and defining a generally downwardly and rearwardly curved surface; a contact surface located forwardly of the uppermost edge, the contact surface extending below the top surface portion and adapted for contacting the retaining structure when the retaining structure is biased into engagement with the sweep; and the mounting portion including a central raised area extending upwardly from the top surface portion forwardly adjacent the contact surface to thereby deflect soil away from an uppermost boundary of the contact surface to prevent wearing away of the contact surface and prevent contact of the retaining structure with the soil.