Patent ID: 8042461

Claim:
A partial control system for a pneumatic waste compressor consisting of a compression cylinder with a compression piston connected to a compression plate by means of a piston rod, wherein said compression plate is slidably mounted in a compression chamber under the compressor cylinder, wherein material for compression is deposited through a first door of the compression chamber, wherein compressed waste is removed through a second door below the first door, wherein the compression cylinder is connected at the top to a fast air-escape valve, wherein said fast air-escape valve is coupled by a wire to a manually operated control valve, wherein said manually operated control valve is set to a front position (piston down), a central position (piston locked), and a rear position (piston return), wherein the control valve on the inlet side is coupled to two valves, wherein said two valves open for admission of compressed air from a compressor when the door is closed, and remain closed when the door is open, wherein the partial control system comprises a non-return valve, which is inserted in the wire and closes for admission of compressed air to the cylinder, and of a closing valve whose admission side is coupled to the wire in front of the non-return valve by a wire and whose discharge side is coupled to the wire after the non-return valve by a wire, and that there are means to activate the valve for closure, when the piston is in its lowest bottom position in the cylinder, whereby the supply of air to the compressor stops, and to open it again, when the piston is raised from its bottom position, when new waste is to be filled into the compressor.