Synchronizing control circuit

Claim 1

A CONTROL SYSTEM FOR SYNCHRONIZING A PLURALITY OF ACTUATORS EACH CONNECTED TO A POWER SOURCE AND EACH HAVING SEPARATE MEANS FOR CONTROLLING THE POWER INPUT THERETO, MEANS PROVIDING A DEMAND SIGNAL ACTUATING SAID POWER INPUT MEANS TO DISPLACE SAID ACTUATORS IN A DESIRED DIRECTION TOWARD A DESIRED POSITION, MEANS CONNECTED TO EACH ACTUATOR FOR PRODUCING AN ELECTRICAL SIGNAL REFLECING THE POSITION OF SAID ACTUATOR, MEANS FOR COMPARING SAID POSITIONAL SIGNALS WITH SAID DEMAND SIGNAL AND DEACTUATING SAID POWER INPUT MEANS WHEN A PREDETERMINED RELATION THEREBETWEEN INDICATES THE DESIRED POSITION HAS BEEN REACHED, SAID POSITIONAL SIGNALS ALSO HAVING A PREDETERMINED RELATIONSHIP ONE TO THE OTHER WHEN MOVEMENT OF SAID ACTUATORS IS PROPERLY SYNCHRONIZED AND MEANS RESPONSIVE TO A DEVIATION OF SAID POSITIONAL SIGNALS FROM SAID PREDETERMINED RELATIONSHIP, REFLECTING AN ASYNCHRONOUS RELATION BETWEEN SAID ACTUATORS, FOR VARYING THE POWER INPUT MEANS TO ESTABLISH A SYNCHRONOUS RELATION BETWEEN ALL OF SAID ACTUATORS.