Threaded lamp adapter

A connector for adapting a lamp to be threaded into a socket of a lighting fixture comprising:

• a cylindrical body portion adapted to receive first and second conductors to be connected to the energizing terminals of said lamp,
• a hollow cylindrical sleeve adapted to be electrically connected to one of said conductors and threaded at least on its exterior for connection to said light socket in said fixture and rotatably mounted on said body for relative rotation with respect thereto about a common axis,
• a securing ring fixedly mounted on one end of said body and slidably engaging said sleeve for permitting relative rotation but limiting axial movement between said sleeve and said body, said ring being adapted for connection to the other of said conductors,
• one of said sleeve and said ring having an axially projecting cam and the other having an opening adapted to receive said cam when said sleeve and said ring are rotated to a relative orientation whereat said cam is in registration with said opening, whereby continuous rotation of said body relative to said socket in one direction with said sleeve threads engaging said socket will cause said sleeve to be threaded into said socket and after said sleeve is fully engaged in said socket said body will rotate relative to said sleeve and said socket and rotation of said body in the opposite direction will cause said sleeve to rotate with said body to be threaded out of said socket.