Universal receptacle shell coding device

Claim 1

A CODABLE UNIVERSAL RECEPTACLE SHELL ASSEMBLY COMPRISING A FIRST RECEPTACLE SHELL FOR HOUSING A FIRST ELECTRICAL CONNECTOR: COMPRISING A BACK PLATE AND A WALL FORMING AN INTEGRAL UNIT, SAID WALL HAVING A FRONT EDGE SPACED APART FROM SAID BACK PLATE; SAID SHELL HAVING AN APERTURE IN SAID WALL, SAID APERTURE EXTENDING FROM SAID FRONT EDGE OF SAID WALL TOWARDS SAID BACK PLATE; A CODING PLATE HAVING A LEADING EDGE AND A TRAILING EDGE AND PROPORTIONED TO FIT OVER THE APERTURE IN SAID SHELL WALL, SAID CODINGPLATE HAVING A CODING NOTCH THEREIN, SAID CODING NOTCH EXTENDING FROM SAID LEADING EDGE OF SAID CODING PLATE TOWARDS SAID TRAILING EDGE; MEANS TO CONNECT SAID CODING PLATE TO SAID SHELL OVER SAID APERTURE, WHEREBY SAID LEADING EDGE OF SAID CODING PLATE AND SAID FRONT EDGE OF SAID WALL ARE ALIGNED AND SAID CODING NOTCH IN SAID CODING PLATE IS POSITIONED OVER AT LEAST A PORTION OF SAID APERTURE IN SAID WALL; A SECOND RECEPTACLE SHELL FOR HOUSING A SECOND ELECTRICAL CONNECTOR, SAID SECOND SHELL BEING CAPABLE OF FITTING WITHIN SAID FIRST SHELL TO PERMIT MATING OF SAID FIRST AND SECOND ELECTRICAL CONNECTORS; SAID SECOND SHELL COMPRISING A BACK PLATE AND A WALL FORMING AN INTEGRAL UNIT, SAID SECOND SHELL HAVING A PLURALITY OF APERTURES IN ITS WALL FOR ACCEPTING A CODING PIN; AND A CODING PIN INSERTED INTO ONE OF SAID APERTURES TO MATCH THE CODING NOTCH OF SAID FIRST SHELL, TO PERMIT MATING OF ONLY SIMILARLY CODED FIRST AND SECOND RECEPTACLE SHELLS.