Busduct equipment with polarized elements and conduit shell joining means

Claim 1

E.ECTRICAL SUPPLY AND DISTRIBUTION EQUIPMENT COMPRISING A PLURALITY OF STRAIGHT CONDUIT SECTIONS, HAVING A CROSS-SECTION SYMMETRIC WITH RESPECT TO A LONGITUDINAL MIDPLANE AND AN APERTURE ADJACENT EACH END OF EACH OF SAID SECTIONS, IN THE WALL OF EACH SECTION, BOTH OF SAID APERTURES BEING LOCATED TO ONE AND THE SAME SIDE OF SAID MIDPLANE; A PLURALITY OF LONGITUDINAL CONDUCTORS SIMILARLY ARRANGED SYMMETRICALLY IN EACH SECTION WITH RESPECT TO SAID MIDPLNE, SAID CONDUCTORS HAVING LENGTHS COEXTENSIVE WITH THE LENGTHS OF THE CORRESPONDING SECTION; INSULATING SUPPORTING MEANS IN EACH SECTION FOR SUPPORTING SAID CONDUCTORS; CONDUCTIVE CONDUCTOR-COUPLING MEANS ELECTRICALLY INTERCONNECTING CORRESPONDING CONDUCTORS IN CONSECUTIVE SECTINS; AND CONDUIT-COUPLING MEANS, FOR INTERCONNECTING CONSECUTIVE CONDUIT SECTIONS, COMPRISING TWO SHELL MEMBERS AT LAST PARTLY SURROUNDING THE ADJACENT ENDS OF SAID CONSECUTIVE SECTIONS AND AT LEAST PARTLY ENCLOSING SAID CONDUCTOR-COUPLING MEANS, ONE OF WHICH SHELL MEMBERS HAS TWO LUGS IN ENGAGEMENT SEPARATELY WITH SAID APERTURES ADJACENT TO ADJACENT ENDS OF SAID CONSECUTIVE SECTIONSD, AND MEANS FOR TIGHTENING SAID SHELL MEMBERS AROUND BOTH SAID CONSECUTIV SECTIONS.