Electromechanical current sensing apparatus for use with high voltage electric power transmission conductors

Claim 1

AN ELECTROMECHANICAL DEVICE FOR SENSING ALTERNATING CURRENT FLOW IN A HIGH VOLTAGE CONDUCTOR AND REPRODUCING IT AT GROUND POTENTIAL COMPRISING: (A) A HOLLOW UPSTANDING INSULATOR ADAPTED TO RECEIVE THE HIGH VOLTAGE CONDUCTOR AT ITS UPPER END WHILE ITS LOWER END IS GROUNDED, (B) A FIRST TRANSDUCER AT THE UPPER END OF SAID INSULATOR CONNECTED FOR ENERGIZATION IN RESPONSE TO CURRENT FLOW THROUGH SAID CONDUCTOR AND FOR OSCILLATORY MOVEMENT IN SYNCHRONISM WITH THE FREQUENCY OF THE ALTERNATING CURRENT WITH THE DISPLACEMENTS BEING A FUNCTION OF THE MAGNITUDE OF THE CURRENT FLOW IN SUCCEEDING HALF CYCLES, (C) A SECOND TRANSDUCER AT THE LOWER END OF SAID INSULATOR, (D) AN INSULATING MEMBER EXTENDING THROUGH SAID INSULATOR AND RIGIDLY INTERCONNECTING THE MOVING ELEMENTS OF SAID TRANSDUCERS WHEREBY SAID SECOND TRANSDUCER GENERATES AN ALTERNATING CURRENT THE MAGNITUDE AND FREQUENCY OF WHICH CORRESPOND TO THE MAGNITUDE AND FREQUENCY OF THE ALTERNATING CURRENT FLOW IN SAID CONDUCTOR, AND (E) EACH TRANSDUCER INCLUDING: (1) A PERMANENT MAGNET STRUCTURE FAST ON SAID INSULATING CONNECTING MEMBER, AND (2) TWO COILS HAVING THE RESPECTIVE MAGNET STRUCTURE CENTRALLY LOCATED WITH RESPECT THERETO AND CONNECTED IN PUSH-PULL RELATION WITH RESPECT TO THE MAGNETIC FIELD THEREOF.