Automatic cam operated plural valve control system

Claim 1

AN AUTOMATIC CONTROL SYSTEM COMPRISING: A PLURALITY OF THREE-WAY VALVES HAVING A PRESSURE INLET, AN OUTLET COMMUNICATING WITH A REMOTE PRESSURE OPERATED VALVE, AND A RELIEF, AND VALVE MEANS SELECTIVELY MOVABLE BETWEEN A FIRST POSITION WHEREIN SAID OUTLET IS CONNECTED WITH SAID INLET AND A SECOND POSITION WHEREIN SAID OUTLET IS CONNECTED WITH SAID RELIEF; A CAM SHAFT; A FIRST CAM MOUNTED ON SAID CAM SHAFT, SECURED THERETO AND DRIVEN THEREBY; A PLURALITY OF SECOND CAMS MOUNTED TO ROTATE FREELY ON SAID CAM SHAFT ADJACENT SAID FIRST CAM; A DOG AND A LUG FORMED ON EACH OF SAID SECOND CAMS, EACH OF SAID DOGS BEING ADAPTED TO ENGAGE THE LUG ON THE NEXT ADJACENT CAM; A DOG FORMED ON SAID FIRST CAM ADAPTED TO ENGAGE THE LUG ON THE ONE OF SAID SECOND CAMS NEXT ADJACENT IT; A CLEFT IN THE PROFILE OF EACH OF SAID CAMS; MEANS FOR SELECTIVELY VARYING THE LENGTH OF EACH OF SAID CLEFTS; A CAM FOLLOWER ASSOCIATED WITH EACH OF SAID CAMS AND CONTROLLING THE MOVEMENT OF ONE OF SAID VALVE MEANS BETWEEN SAID FIRST POSITION AND SAID SECOND POSITION IN ACCORDANCE WITH THE PROFILE OF SAID CAM; MEANS FOR ROTATING SAID CAM SHAFT; FIRST SWITCH MEANS ACTIVATING SAID ROTATING MEANS; AND SECOND SWITCH MEANS DEACTIVATING SAID ROTATING MEANS AFTER PREDETERMINED ANGULAR ROTATION OF SAID CAM SHAFT.