Double action, electrical connector coupling device

In a connector comprising a cylindrical female receptacle member including a tubular portion which receives a projecting end of a cylindrical male plug member including a plug shell received within said receptacle member tubular portion, and wherein one of said members bears at least one bayonet pin which projects radially from said one member and is received within a bayonet cam groove on the opposed periphery of the other member, and wherein said plug shell bears a radial shoulder intermediate of its ends, said radial shoulder having an outer diameter in excess of the inner diameter of the receptacle member tubular portion so as to abut the nose of the tubular portion, said plug member including a coupling ring concentrically carried by said male plug member and having a portion concentrically surrounding said receptacle and forming the bayonet connection with said receptacle member, and said shoulder having an outer diameter less than the inner diameter of said coupling ring, the improvement comprising:

• the end of said coupling remote from said receptacle member being fine threaded on its inner periphery,
• a split washer installable onto said plug shell from the front of said plug shell, being located behind the plug shell shoulder and having an inner diameter in excess of said plug shell proper but less than the outer diameter of said plug shell shoulder and having an outer diameter in excess of said plug shell shoulder, and
• a cylindrical fitting fine threaded on its outer periphery and being threaded to the inner periphery of said ring, said fitting having a nose at one end and an inner diameter in excess of the diameter of said plug shell shoulder, but less than the outer diameter of the plug shell proper, and the nose of said fitting being recessed at its inner periphery so as to receive said split washer and hold it concentric with the fitting, such that after said plug is mated to said receptacle and said fitting is further threaded to said ring, the fitting abuts the split washer, the split washer abuts the plug shell shoulder, and the plug shell shoulder abuts the nose of said receptacle tubular portion, so as to cause metal-to-metal locking of said plug shell to said receptacle member.

A double action electrical connector coupling device for an electrical connector comprising a cylindrical female receptacle including a tubular portion receiving a projecting end of a cylindrical male plug including a plug shell received within said receptacle tubular portion, said receptacle tubular portion bearing at least one bayonet pin projecting radially outwardly thereof, a coupling ring concentrically carried by said male plug member and having a portion concentrically surrounding said receptacle and a bayonet cam groove within the inner periphery of said coupling ring portion and receiving said at least one bayonet pin, said plug shell bearing a radial shoulder intermediate of its ends with said radial shoulder having an outer diameter in excess of the inner diameter of the receptacle tubular portion so as to abut the nose of the tubular portion but having an outer diameter less than the outer diameter of said ring, said device comprising:

• the end of said ring remote from said receptacle member being fine threaded on its inner periphery,
• a split washer installable onto said plug shell from the front of said plug shell, being located behind the plug shell shoulder and having an inner diameter in excess of said plug shell proper but less than the outer diameter of said plug shell shoulder and having an outer diameter in excess of said plug shell shoulder, and
• a cylindrical fitting fine threaded on its outer periphery and being threaded to the inner periphery of said ring, said fitting having a nose at one end and an inner diameter in excess of the diameter of said plug shell shoulder, but less than the outer diameter of the plug shell proper, and the nose of said fitting being recessed at its inner periphery so as to receive said split washer and hold it concentric with the fitting, such that after said plug is mated to said receptacle and said fitting is further threaded to said ring, the fitting abuts the split washer, the split washer abuts the plug shell shoulder, and the plug shell shoulder abuts the nose of said receptacle tubular portion, so as to cause metal-to-metal locking of said plug shell to said receptacle member.