Patent ID: 7331279

Claim:
A round baling press, comprising: a baling press chamber having a door in a rear section of the baling press chamber, the door being movable along a path between a closed position where the door extends along the back side of the baling press chamber and a fully open position defining a discharge opening of a maximum size permitting a completely formed bale of a size which is the largest capable of being formed in said press chamber to be ejected from the baling press chamber; and a door position sensor arrangement for providing information of at least a plurality of positions of said door, including intermediate positions between said closed and fully open positions, as said door moves along said path, and the door position sensor arrangement being responsive to movement of said door for providing an electrical door position signal having a value representing a given position of said plurality of positions occupied by the door at any time as said door moves along the path; an electronic control connected to the door position sensor arrangement; an electro-hydraulic control valve being connected to said electronic control; an extensible and retractable hydraulic actuator being connected to the to the electro-hydraulic control valve and to the door so as to be capable of moving the door between the fully open and closed positions; and said electronic control being operable to effect operation of said electro-hydraulic control valve so as to drive the actuator at a speed corresponding to a value of the door position signal received from the sensor arrangement representing said given position occupied by said door.