Transistor inverter for synchronized operation with a like paralleled inverter

Claim 1

IN A SATURABLE TRANSFORMER TYPE INVERTER ADAPTED TO BE ENERGIZED FROM A D-C SOURCE AND TO HAVE THE OUTPUT VOLTAGE THEREOF APPLIED TO A LOAD IN PARALLEL RELATIONSHIP TO THE OUTPUT VOLTAGE OF AT LEAST ONE OTHER LIKE INVERTER ALSO APPLYING VOLTAGE TO THE LOAD, IN COMBINATION, A TRANSISTOR BRIDGE, EACH ARM OF WHICH INCLUDES THE COLLECTOREMITTER CIRCUIT OF A TRANSISTOR HAVING EMITTER, COLLECTOR AND BASE ELECTRODES, SAID BRIDGE HAVING D-C INPUT MEANS FOR CONNECTION TO THE D-C SOURCE AND A-C OUTPUT MEANS, A TRANSFORMER HAVING A SATURABLE CORE PROVIDED WITH A PRIMARY AND AN OUTPUT WINDING, AND WITH A FEEDBACK WINDING FOR EACH TRANSISTOR IN SAID BRIDGE, THE LEAKAGE REACTANCE OF SAID CORE BEING LESS BETWEEN SAID OUTPUT WINDING AND SAID FEEDBACK WINDINGS THAN BETWEEN SAID OUTPUT WINDING AND SAID PRIMARY WINDING, MEANS FOR CONNECTING SAID PRIMARY WINDING TO SAID A-C OUTPUT MEANS OF SAID TRANSISTOR BRIDGE, MEANS FOR CONNECTING SAID OUTPUT WINDING TO A LOAD, MEANS FOR CONNECTING SAID RESPECTIVE FEEDBACK WINDINGS BETWEEN THE BASE AND EMITTER ELECTRODES OF RESPECTIVE ONES OF SAID TRANSISTORS OF SAID BRIDGE TO CONTROL THE CONDUCTION THEREOF, THE DIFFERENTIAL OF LEAKAGE REACTANCE BETWEEN SAID PRIMARY, OUTPUT AND FEEDBACK WINDINGS CAUSING SAID TRANSISTORS TO SWITCH WHEN THE IMPEDANCE OF THE OUTPUT WINDING OF A PARALLELED INVERTER DECREASES BEFORE SAID CORE OF SAID TRANSFORMER SATURATES.