Radio controlled plural motor crane control system

Claim 1

IN COMBINATION WITH A CRANE HAVING THREE OPERATING MOTORS, A SYSTEM FOR REMOTELY CONTROLLING SAID MOTORS COMPRISING AN OPERATOR-CONTROLLED TRANSMITTER LOCATED AWAY FROM SAID CRANE AND A RECEIVER MOUNTED ON SAID CRANE; SAID TRANSMITTER COMPRISING MEANS FOR GENERATING A CARRIER SIGNAL FIRST OPERATOR-CONTROLLED MEANS FOR GENERATING A FIRST TRAIN OF EVENLY SPACED PULSES, A SECOND OPERATOR-CONTROLLED MEANS FOR GENERATING A SECOND TRAIN OF EVENLY SPACED PULSES DISPLACED TIMEWISE FROM THE PULSES OF SAID FIRST TRAIN; THIRD OPERATOR-CONTROLLED MEANS FOR GENERATING A THIRD TRAIN OF EVENLY SPACED PULSES DISPLACED TIMEWISE FROM THE PULSES OF SAID FIRST AND SECOND TRAINS, MEANS FOR MODULATING SAID CARRIER WITH SAID PULSE TRAINS, AND MEANS FOR RADIATING THE MODULATED CARRIER; SAID RECEIVER COMPRISING MEANS FOR RECEIVING THE RADIATED MODULATED CARRIER AND FOR DERIVING THEREFROM A DETECTED SIGNAL CONSTITUTING ALL OF THE PULSES OF SAID PULSE TRAIN, MEANS RESPONSIVE TO ALL OF THE PULSES OF SAID DETECTED SIGNAL TO GENERATE A CONTROL PULSE TRAIN, MEANS RESPONSIVE TO ALL OF SAID PULSES IN SAID DETECTED SIGNAL TO GENERATE FIRST, SECOND AND THIRD PULSED TIMING SIGNALS, MEANS RESPONSIVE TO BOTH SAID CONTROL PULSE TRAIN AND SAID FIRST, SECOND AND THIRD PULLED TIMING SIGNALS FOR EXTRACTING PULSES ACCORDING TO SAID ORIGINAL FIRST, SECOND THIRD TRANSMITTED PULSE TRAINS, MEANS RESPONSIVE TO EXTRACTED FIRST TRAIN PULSES FOR CONTROLLED ONE OF SAID MOTORS, MEANS RESPONSIVE TO EXTRACTED SECOND TRAIN PULSES FOR CONTROLLING A SECOND ONE OF SAID MOTORS, AND MEANS RESPONSIVE TO EXTRACTED THIRD TRAIN PULSES FOR CONTROLLING A THIRD ONE OF SAID MOTORS.