Enclosed trolley busway system

Claim 1

IN AN ENCLOSED CONDUCTOR SYSTEM OF THE CHARACTER DESCRIBED, A PLURALITY OF MODULAR COMPONENTS FOR SUCH SYSTEM EACH COMPRISING A CONDUCTOR ENCLOSURE SECTION FORMED OF THERMO-SETTING PLASTIC MATERIAL OF HIGH IMPACT AND BEAM STRENGTH AND NON-CONDUCTIVE OF ELECTRICAL CURRENT, SAID SECTION BEING GENERALLY OF HOLLOW RECTANGULAR SHAPE IN TRANSVERSE CROSS-SECTION AND HAVING A SUBSTANTIALLY HORIZONTAL TOP WALL AND SUBSTANTIALLY VERTICAL SIDE WALLS WHICH RESPECTIVELY TERMINATE IN INTURNED COPLANAR FLANGES TO PROVIDE THE SECTION WITH A BOTTOM WALL HAVING A SLOT OF LIMITED UNIFORM WIDTH EXTENDING ALONG THE FULL LENGTH OF THE SECTION MIDWAY BETWEEN THE SIDE WALLS THEREOF, THE TOP WALL OF SAID SECTION BEING PROVIDED INTERNALLY THEREOF AT SPACED INTERVALS ABOVE THE LENGTH THEREOF WITH A PLURALITY OF LATERALLY SPACED LONGITUDINALLY EXTENDING PARALLEL GROOVES OF GENERALLY T-SHAPED TRANSVERSE SECTIONS FOR RESPECTIVELY RECEIVING THEREIN IN ELECTRICALLY INSULATED RELATION THE UPPER PORTIONS OF A PLURALITY OF I-SHAPED CONDUCTOR RAILS, THE UPPER SURFACES OF SAID INTURNED BOTTOM FLANGES BEING RESPECTIVELY FACED WITH CURRENT GROUNDING STRIPS EXTENDING THE FULL LENGTHS OF SAID FLANGES TO PROVIDE GROUNDED SUPPORTING TRACKS FOR A CURRENT COLLECTING DEVICE MOVABLE WITHIN SAID ENCLOSURE IN ELECTICAL CONTACT WITH SAID RAILS, AND MEANS FOR DETACHABLY COUPLING IN LONGITUDINAL ALINEMENT ADJOINING ONES OF SAID SECTIONS AND ADJOURNING GROUNDING STRIPS THEREOF TO PROVIDE AN ENCLOSURE WITH ELECTRICALLY CONTINUOUS GROUNDING STRIPS OF ANY DESIRED LENGTH.