Electrical control panel structure

Claim 1

AN ELECTRICAL STRUCTURE COMPRISING, A HOUSING HAVING A FRONT OPENING, A BUSWAY INCLUDING A PLURALITY OF BUS BARS IN THE HOUSING, EACH BUS BAR HAVING A PLUG-IN OPENING, A UNIT TO BE INSERTED AND WITHDRAWN THROUGH THE FRONT OPENING INTO AND OUT OF THE HOUSING AND INCLUDING STAB CONTACTS FOR PLUG-IN CONNECTION TO AND DISCONNECTION FROM THE PLUG-IN OPENINGS OF SAID BUS BARS, SAID BUSWAY HAVING AN ALIGNING SLOT, SUPPORT MEANS IN THE HOUSING FOR MOUNTING SAID UNIT WHEN INSERTED, GUIDE MEANS ON SAID UNIT AND IN SAID HOUSING FOR COOPERATION WHEN THE UNIT IS INSERTED TO GUIDE THE UNIT INTO CONNECTED RELATION WITH SAID BUS BARS, SAID GUIDE MEANS INCLUDING AN ELONGATED GUIDE BAR MOUNTED ON SAID SUPPORT MEANS AND A GUIDE SLOT FORMED IN SAID UNIT TO RECEIVE THE GUIDE BAR, SAID GUIDE BAR AND GUIDE SLOT BEING ARRANGED TO PREVENT SUBSTANTIAL MOVEMENT OF THE UNIT RELATIVE TO THE SUPPORT MEANS IN ALL DIRECTIONS PERPENDICULAR TO THE PATH OF GUIDANCE DURING INSERTION AND WITHDRAWAL OF THE UNIT, AND MEANS ON THE GUIDE BAR EXTENDING THROUGH SAID ALIGNING SLOT IN THE BUSWAY FOR ALIGNING THE GUIDE BAR RELATIVE TO SAID BUS BARS TO ASSURE POSITIVE CONNECTION OF SAID UNIT TO SAID BUS BARS WHEN THE UNIT IS INSERTED.