Supporting arm for electrotherapeutic treatment head

Claim 1

IN ELECTROTHERAPEUTIC APPARATUS, A SOURCE OF PULSES HAVING FREQUENCIES OVER ONE MEGACYCLE, AN ELECTROTHERAPEUTIC TREATMENT HEAD CONTAINING PRIMARY AND SECONDARY COILS, A COAXIAL CABLE ELECTRICALLY CONNECTED TO SUPPLY PULSE ENERGY FROM SAID SOURCE TO SAID PRIMARY COIL, THE SECONDARY COIL BEING LOCATED FOR INDUCTIVE COUPLING TO THE PRIMARY COIL TO RADIATE ENERGY INDUCTIVELY SUPPLIED THERETO, AND SUPPORT ARM STRUCTURE FOR SAID HEAD INCLUDING JOINT MEANS RENDERING THE ARM STRUCTURE CAPABLE OF SELECTIVE ARTICULATION, THE OVERALL ARM LENGTH BEING IN THE RANGE 1/2 TO 31/2 METERS, THE ARM STRUCTURE INCLUDING AT LEAST ONE SEGMENT CONSISTING OF DIELECTRIC MATERIAL AND CONNECTED IN LOAD BEARING SERIES RELATION WITH THE ARM STRUCTURE SO AS TO PRECLUDE RADIATION BY THE ARM OF HIGH FREQUENCY ENERGY IN THE 1/2 TO 6 METER RANGE, A CABINET SUPPORTING THE ARM STRUCTURE, THE ARM STRUCTURE ALSO INCLUDING A LOCKABLE METALLIC PRIMARY JOINT CARRIED ABOVE THE CABINET TOP, A LOCKABLE METALLIC SECONDARY JOINT SPACED FROM SAID PRIMARY JOINT, SAID SEGMENT BEING IN THE FORM OF A SHAFT EXTENDING INTERMEDIATE SAID JOINTS, THE ARM STRUCTURE ALSO INCLUDING A METALLIC SWIVEL JOINT BEYOND AND SPACED FROM SAID SECOND JOINT TO CARRY SAID HEAD, AND A SECOND DIELECTRIC SEGMENT IN THE FORM OF A SHAFT EXTENDING INTERMEDIATE SAID SECOND JOINT AND SWIVEL JOINT, THE SPACING BETWEEN SAID DIELECTRIC SEGMENTS BEING LESS THAN 1/2 METER, A METALLIC POST EXTENDING VERTICALLY TO CARRY SAID FIRST JOINT, AND A METALLIC SLEEVE SUPPORTING SAID POST TO TURN ABOUT A VERTICAL AXIS, THE SLEEVE BEING CARRIED BY THE CABINET TOP, THE OVERALL HEIGHT OF SAID POST, SLEEVE AND FIRST JOINT BEING LESS THAN 1/2 METER.