Patent ID: 8051917

Claim:
A soil treatment apparatus driveable in a driving direction across soil, comprising: a chassis; and a plurality of tool units, each of the plurality of tool units including a bracket having a first end section pivotally mounted on the chassis to be driven up and down about a first pivoting axis, and a second end section opposite the first end section, a plunger tool device being pivotally linked at the second end section of the bracket about a second pivoting axis, and a stop to limit movement of the plunger tool device, the stop being formed such that plunging is carried out at a predefined plunging angle, each stop of the plurality of tool units being separate from each other and each stop being arranged to be moved together with its respective bracket, the first pivoting axis being disposed behind the second pivoting relative to the driving direction, and the plunger tool device being linked and formed such that the plunger tool device is subjected to a centrifugal force in a direction toward a position limited by the stop whenever the bracket is pivoted about the first pivoting axis.