Abstract: An electrical contact for a lamp having at least one electrical jack employed in conjunction with lamp housing and an electrical conductor. The contact includes a body element possessing a first end portion, second end portion, and an intermediate turned or bent portion. The body element is constructed of flexible conductive material to permit bending of the first and second end portions relative to one another. A pair of flexible flanges extend from the first portion and serve to form a channel and to contact the lamp electrical jack. The flanges include at least one edge portion capable of scrapping the lamp electrical jack. The electrical conductor connects to the second end portion of the body element which is held to the lamp housing.

Abstract: A lighting system using a PL fluorescent lamp which is capable of screwing into a standard electrical lamp socket utilizing a base member possessing a mechanism for mechanically supporting a PL fluorescent lamp. A male fitting is connected to the base member and includes an outer surface which may be threaded in configuration. An adaptor is also used in the present system and is capable of mechanically and electrically connecting to a standard Edison electrical lamp socket. The adaptor includes an external threaded outer surface for threadingly engaging the standard Edison lamp socket, and also includes an inner surface in the form of a lamp socket. The inner surface lamp socket of the adaptor is capable of mechanically and electrically contacting the outer surface of the male fitting. The adaptor inner lamp socket and male fitting are of a non-standard size. The adaptor locks into the standard Edison electrical lamp socket, preventing its usage by standard incandescent lamp bases.

Abstract: A mechanism for locking a fluorescent lamp adaptor to a standard incandescent screw-in lamp socket utilizing base member having a bottom and wall portions. The wall portion of the base member possesses an inner surface and an outer surface and an aperture extends through the wall portion. A male screw-in element is also utilized and is confined to the base member for freely rotating relative to the base member and the screw-in lamp socket. A tool urges the threaded male screw-in element into threading engagement with the standard screw-in lamp socket to permit insertion and removal of the lamp adaptor in relation to the standard screw-in lamp socket.