Electrical coupling device

Claim 1

A COUPLING DEVICE FOR OBTAINING A VOLTAGE FROM A HIGH VOLTAGE POWER LINE CURRENT CONDUCTOR, AND SERVING AS A PERMANENT INSULATING SUPPORT FOR THE CONDUCTOR, COMPRISING A HIGH VOLTAGE HOLLOW TUBULAR INSULATOR HAVING ONE OPEN END AND ONE CLOSED END WITH A CAVITY DEFINED ALONG THE LENGTH OF THE INTERIOR THEREOF, SAID CLOSED END HAVING AN EXTERNAL FORMATION FOR RECEIVING AND SUPPORTING SAID CURRENT CONDUCTOR ON SAID INSULATOR, AND ENABLING SAID INSULATOR TO BE LOCATED IN PREDETERMINED ANGULAR ORIENTATION WITH RESPECT TO THE LONGITUDINAL DIRECTION OF SAID CONDUCTOR, A MEASURING COIL MOUNTED WITHIN THE INSULATOR ADJACENT THE CLOSED END WITH THE AXIS OF THE COIL IN PREDETERMINED ANGULAR ORIENTATION WITH RESPECT TO THE DIRECTION OF THE EXTERNAL FORMATION OF THE CLOSED END OF THE INSULATOR, A CAP COVERING THE OPEN END OF SAID INSULATOR, A PAIR OF OUTPUT LEADS EXTENDING FROM SAID COIL THROUGH AND INSULATED FROM SAID CAP, AND MEANS SEALING SAID CAP ON SAID INSULATOR.