Dead-front electrical receptacle

Claim 1

IN COMBINATION, A DUST TIGHT, DEAD FRONT ELECTRICAL CONNECTING UNIT, A PLUG HAVING A PLURALITY OF PLUG CONTACTS RECEIVED IN SAID UNIT, SAID UNIT INCLUDING A RECEPTACLE HOUSING HAVING FIXED CONTACTS PASSING THROUGH A CLOSED END OF SAID HOUSING AND INSULATED THEREFROM, A PARTITION MOUNTED IN SUBSTANTIALLY AXIALLY FIXED POSITION AND IN A DUST TIGHT MANNER INTERMEDIATE THE ENDS OF SAID HOUSING, SAID PARTITION AND CLOSED END OF SAID HOUSING FORMING A DUST TIGHT ARCING COMPARTMENT, SAID FIXED CONTACTS BEING RECEIVED IN SAID COMPARTMENT, A RECEPTACLE CARRYING MEMBER HAVING A RECEPTACLE, SAID MEMBER MOUNTED IN SLIDING FACHION ADJACENT AN OPEN END OF SAID HOUSING, SAID PLUG BEING RECEIVED IN SAID RECEPTACLE, A PLURALITY OF RECEPTACLE CONTACTS, CARRIED IN SAID RECEPTACLE AND ENGAGED BY SAID PLUG CONTACTS, SAID RECEPTACLE CONTACTS EXTENDING THROUGH SAID PARTITION INTO SAID COMPARTMENT AND BEING ENGAGED BY SAID FIXED CONTACTS EXTENDING THROUGH SAID PARTITION AND, SAID RECEPTACLE CONTACTS HAVING A SLIDING, CLOSE FITTING, AND DUST EXCLUDING JOINT WITH SAID PARTITION AND MEANS COOPERABLE BETWEEN SAID HOUSING AND SAID RECEPTACLE CARRYING MEMBER BEING OPERABLE UPON REMOVAL OF SAID PLUG FROM SAID UNIT TO FIRST SEPARATE SAID RECEPTACLE CONTACTS FROM SAID FIXED CONTACTS AND THEREAFTER SEPARATE SAID PLUG CONTACTS FROM SAID RECEPTACLE CONTACTS.