Joint means for bus duct

Claim 1

THE COMBINATION COMPRISING A FIRST BUS DUCT SECTION AND A SECOND BUS DUCT SECTION IN ELECTRICAL SERIES AT A JOINT REGION; EACH OF SAID BUS DUCT SECTIONS COMPRISING A PLURALITY OF ELONGATED FACE TO FACE BUS BARS MOUNTED IN SPACED PARALLEL RELATIONSHIP; SAID FIRST BUS DUCT SECTION BUS BARS OVERLAPPING AND ABUTTING CORRESPONDING BUS BARS OF SAID SECOND BUS DUCT SECTION AT SAID JOINT REGION; INSULATING MEANS AT SAID JOINT INTERPOSED BETWEEN PAIRS OF ABUTTING BUS BARS; AN ANCHORING MEANS HAVING OPPOSITE SURFACES BETWEEN WHICH SAID JOINT REGION IS DISPOSED; A THREADED FORCE MULTIPLYING MEANS OPERATIVELY CONSTRUCTED AND POSITIONED TO ACT UPON A FIRST OF SAID SURFACES AND URGE SAID BUS BARS TOWARD THE OTHER OF SAID SURFACES TO FIRMLY SEAT ABUTTING BUS BARS AGAINST EACH OTHER AND THEREBY ACHIEVE GOOD ELECTRICAL CONTACT; EACH OF THE BUS DUCT SECTION INCLUDING AN ELONGATED HOUSING WHEREIN SAID BUS BARS ARE DISPOSED, SAID JOINT REGION BEING POSITIONED AND CONSTRUCTED WHEREBY A FIRST OF SAID HOUSINGS EXERTS A