Pneumatic material conveyor

Claim 1

A PNEUMATIC CONVEYOR SYSTEM COMPRISING A MIXING DEVICE INCLUDING A MIXING CHAMBER, A SOURCE OF SOLID, GRANULAR MATERIAL AND A SOURCE OF AIR UNDER PRESSURE EACH COMMUNICATING WITH SAID CHAMBER, A COLLECTION CHAMBER INTO WHICH SOLID MATERIAL CONVEYED BY SAID AIR IS TO BE DISCHARGED, CONVEYOR CONDUIT MEANS DELIVERING A STREAM OF AIR LADEN WITH SOLID, GRANULAR MATERIAL FROM SAID MIXING CHAMBER TO SAID COLLECTION CHAMBER, A SUCTION CONDUIT MEANS SUPPLYING AIR INTO SAID MIXING CHAMBER, AN ASPIRATING DEVICE IN ONE OF SAID CONDUIT MEANS INTRODUCING MATERIAL INTO SAID AIR STREAM, A SOLID MATERIAL LEVEL DETECTING MEANS ASSOCIATED WITH SAID COLLECTION CHAMBER SENSING THE LEVEL OF SOLID MATERIAL THEREIN, A FLOW CONTROL MEANS FOR SAID CONVEYOR CONDUIT MEANS OPERABLE TO SELECTIVELY HALT AND PERMIT FLOW OF SAID CONVEYOR AIR STREAM, MEANS CONNECTING SAID FLOW CONTROL MEANS WITH SAID LEVEL DETECTING MEANS AND OPERATING THE FORMER FROM THE LATTER, A MANUALLY OPERABLE REMOTE CONTROL CONNECTED TO SAID FLOW CONTROL MEANS AND INDEPENDENTLY OPERATING THE LATTER, A BLOCKAGE CLEARING MEANS OPERATIVELY CONNECTED TO SAID MIXING CHAMBER AND TO SAID CONVEYOR CONDUIT MEANS AND RESPONSIVE TO A PREDETERMINED PRESSURE RISE THEREIN TO APPLY THE FULL PRESSURE OF THE AIR SUPPLY AND DISCHARGE THE BLOCKAGE.