Coupling ring having detent means

Claim 1

A first electrical connector assembly for use in connecting to a second electrical connector assembly, the first connector assembly of the type having: a cylindrical housing having a front portion, a rear portion and an annular shoulder on the outside of the housing between the front and rear portions; a coupling ring telescoped over the housing, said coupling ring having a forward portion adapted to connect to said second housing and a rear portion that includes an annular shoulder extending inwardly; means for mounting said coupling ring to said first housing for rotational and axial movement relative to said first housing; and means for selectively preventing rotation of the coupling ring to prevent unwanted rotation of the coupling ring when the first connector assembly and the second connector assembly are coupled together, the improvement wherein the means of preventing rotation of the coupling ring comprises: at least one rearwardly extending projection mounted on the rear face of the shoulder on said housing, said rearward projection resiliently deflectable in the forward direction; at least one notch in said coupling ring shoulder, said notch adapted to receive the rearwardly extending projection on said housing when said coupling ring is in its forward most position; and a ring telescopically mounted over the coupling ring for rotational and axial movement relative to said coupling ring, said ring having a forward portion and a rear portion that includes an inwardly extending shoulder that includes at least one forwardly extending projection adapted to mate with the notch in said coupling ring when said ring is pressed forwardly against said coupling ring.