Conductor bar

Claim 1

A CONDUCTOR BAR COMPRISING A LONGITUDINALLY EXTENDING SHEET METAL SHELL OF UNIFORM METAL THICKNESS THROUGHOUT INCLUDING A TRANSVERSELY CONTINUOUS TOP WALL AND DOWNWARDLY EXTENDING TRANSVERSELY SPACED SIDE WALLS INTEGRAL WITH SAID TOP WALL, THE UPPER PORTIONS OF SAID SIDE WALLS CONTIGUOUS TO SAID TOP WALL HAVING TRANSVERSELY ALIGNED LONGITUDINAL INDENTATIONS AT THEIR OUTER SIDES FORMING TRANSVERSELY ALIGNED DOWNWARDLY FACING LONGITUDINAL SHOULDERS AT THEIR INNER SIDES IN DOWNWARDLY SPACED RELATION TO SAID TOP WALL, AND A SEPARATE CONDUCTOR STRIP OF STRIP METAL OF SUBSTANTIALLY GREATER THICKNESS THAN THE SHEET METAL THICKNESS OF SAID SHELL AND HAVING A CURRENT CONDUCTING CAPACITY INDEPENDENT OF THAT OF SAID SHELL, SAID CONDUCTOR STRIP BEING POSITIONED WITHIN SAID SHELL IN CURRENT CONDUCTING RELATIONSHIP THEREWITH AGAINST SAID SHOULDERS IN SPANNING RELATION BETWEEN SAID SIDE WALLS AND HAVING A TRANSVERSELY DISPOSED DOWNWARDLY FACING CONTACT FACE, THE PORTIONS OF SAID SIDE WALLS BELOW SAID SHOULDERS EACH CONSISTING OF AN OUTER WALL PORTION, A BEND PORTION EXTENDING TRANSVERSELY INWARDLY FROM SAID OUTER WALL PORTION, AND AN INNER WALL PORTION EXTENDING UPWARDLY FROM SAID BEND PORTION AND HAVING A LONGITUDINAL FREE EDGE IN VERTICALLY OPPOSED ABUTTING RELATIONSHIP TO SAID CONTACT FACE OF SAID CONDUCTOR STRIP, SAID INNER WALL PORTIONS BEING IN TRANSVERSELY OPPOSED SPACED RELATION TO EACH OTHER AND THEIR OPPOSED SURFACES CONSTITUTING WITH SAID CONTACT FACE OF SAID CONDUCTOR STRIP A DOWNWARDLY OPEN GUIDEWAY CHANNEL, AND THE CURRENT CONDUCTING RELATIONSHIP BETWEEN SAID CONDUCTOR STRIP AND SAID SHELL BEING SUCH THAT THE CURRENT CONDUCTING CAPACITY OF SAID CONDUCTOR BAR IS THE SUM OF THE CURRENT CONDUCTING CAPACITIES OF SAID CONDUCTOR STRIP AND SAID SHELL.