Electrical connector

Claim 1

In a system of electrically interconnected electronic and electrical equipment including a first structural element comprising a rack assembly and a second structural element comprising a modular electronic unit supported by said rack assembly and removable therefrom, an electrical connector comprising: a first electrical-connector element attachable to one of said structural elements; a second electrical-connector element attachable to the other one of said structural elements, said second electrical-connector element being mutually engageable with said first electrical-connector element, each of said first and said second electrical-connector elements being a unitary body of molded plastic material carrying a plurality of electrical contacts electrically connecting the modular electronic unit into the system when said first and said second electrical connector elements are mutually engaged; means for attaching said first electrical-connector element to its associated said structural element, said attaching means including a threaded nut pressed in said one structural element, and further including at least two double-D shaped apertures for alignment, and a threaded screw carried in said one electrical-connector element; and means for keying said first and said second electrical-connector elements whereby electrically compatible pairs of said first and said second electrical-connector elements are made mutually engageable and electrically non-compatible pairs of said first and said second electrical-connector elements are prevented by said keying means from being mutually engaged, said keying means including a keyway coaxial with said attaching means, the keyway being retained in said one electrical-connector element by the screw, said keying means including a key insertable in the keyway when said first and said second electrical-connector elements are mutually engaged, said key being attached to the other one of said first and said second electrical-connector elements.