Internal building partition structures

Claim 1

IN A BUILDING HAVING A FLOOR AND A CEILING, AN INTERNAL BUILDING PARTITION STRUCTURE WHICH INCLUDES: A METAL FLOOR TRACK LOCATED UPON SAID FLOOR, SAID FLOOR TRACK INCLUDING A HOLLOW FLANGE EXTENDING UPWARDLY THEREFROM AWAY FROM SAID FLOOR ALONG THE ENTIRE LENGTH OF SAID TRACK, SAID FLANGE HAVING PARALLEL SIDE WALLS AND TOP WALL POSITIONED AT THE UPPERMOST EXTREMITIES OF SIDEWALLS OF SAID FLOOR TRACK, AND HAVING A PLURALITY OF OPENINGS FORMED IN SAID TOP WALL SO AS TO LEAD INTO THE INTERIOR OF SAID HOLLOW FLANGE; A HOLLOW METAL CEILING TRACK, HAVING A BOTTOM SLOT FORMED THEREIN, MOUNTED ON SAID CEILING SO AS TO BE LOCATED PARALLEL TO SAID BOTTOM TRACK DIRECTLY ABOVE SAID FLANGE; A PLURALITY OF HOLLOW METAL STUD MEMBERS, EACH OF SAID MEMBERS EXTENDING VERTICALLY INTO SAID SLOT AND HAVING A LOWER END ENGAGING AND FITTING CLOSELY AGAINST SAID FLANGE SO AS TO BE IN COMMUNICATION WITH THE INTERIOR OF SAID FLANGE THROUGH SAID OPENING IN SAID TOP WALL OF SAID FLANGE AND WITH THE INTERIOR OF SAID CEILING TRACK; MEANS FOR CONNECTING EACH OF SAID STUD MEMBERS TO SAID TOP WALL OF SAID FLANGE; AND A PLURALITY OF PARTITION PANELS, EACH OF SAID PARTITION PANELS BEING LOCATED ON SAID FLOOR TRACK