Rotary current interchange structure

Claim 1

CURRENT INTERCHANGE STRUCTURE COMPRISING AN INTERNAL AND AN EXTERNAL CONDUCTIVE MEMBER DISPOSED IN CONCENTRIC SPACED RELATION AND CONNECTED FOR RELATIVELY ROTATIONAL MOVEMENT, ONE OF SAID MEMBERS HAVING MEANS FOR PROVIDING AN ANNULAR CHANNEL WHOSE OPEN SIDE IS DISPOSED TOWARD THE OTHER MEMBER, SAID CHANNEL HAVING A PAIR OF GENERALLY LATERALLY EXTENDING SIDEWALLS AND A BOTTOM SURFACE, THE OTHER CONDUCTIVE MEMBER HAVING A PAIR OF OBLIQUE SURFACES, SAID OBLIQUE SURFACES BEING IN AXIAL SPACED RELATION AND EACH BEING DISPOSED OPPOSITE THE INTERSECTION OF ONE OF SAID SIDEWALLS AND SAID BOTTOM SURFACE AND SPACED THEREFROM TO FORM THEREWITH A PAIR OF SUBSTANTIALLY PARALLEL ANNULAR CAVITIES BETWEEN SAID CONDUCTIVE MEMBERS WHICH ARE CHARACTERIZED BY A PAIR OF DIVERGENT SIDEWALLS, A HELICALLY WOUND CONDUCTIVE CURRENT INTERCHANGE SPRING MEMBER DISPOSED IN EACH OF SAID CAVITIES, THE EFFECTIVE DISTANCES BETWEEN SAID CONDUCTIVE MEMBERS ACROSS SAID CAVITIES BEING LESS THAN THE OUTSIDE HELICAL DIAMETER OF SAID SPRING MEMBERS SO THAT THE CONVOLUTIONS OF EACH ARE INCLINED RELATIVE TO ITS HELICAL AXIS WHEREBY THE RESILIENCY OF SAID SPRING MEMBERS HOLD SAID CONVOLUTIONS IN UNIFORMLY ADVANCING SPIRAL RELATION WITH EACH OTHER AND MAINTAINS THEM IN FIRM ELECTRICAL CONTACT WITH SAID MEMBERS.