Patent ID: 7654067

Claim:
A mower-conditioner comprising: a frame supporting a plant-cutting device; and a conditioning device configured to condition plants cut by the plant-cutting device, the conditioning device including first and second hollow conditioning rollers configured to press the plants cut by the plant-cutting device, each roller including a wall defining reliefs over an external periphery of the respective roller, an internal surface of the wall being exposed to an axis of rotation of the respective roller, and first and second end-plates disposed on opposite ends of each of the first and second rollers, respectively, a cross-section of the wall of each roller taken along an axis of rotation of the conditioning roller having a uniform thickness, around a circumference of the roller, extending from an outermost surface of the first end-plate along the axis of rotation to an outermost surface of the second end-plate along the axis of rotation, the first and second rollers each being without an internal shaft.