END CAP, SOCKET, AND ADAPTORS FOR USE WITH A LAMP

摘要

An end cap and socket system for use with a lamp bulb may include an end cap and a socket body. The end cap may include a first cylindrical portion with a first diameter, and a second cylindrical portion with a second diameter smaller than the first cylindrical portion. The socket may a key portion projecting from a front face of the socket. A adaptor for use with a socket may include a key portion. Alternatively, the end can may include a key disk with a key groove cut into the key disk, and the socket may include a key piece with a key rib structured to couple with the key groove. An adaptor for use with an end cap may include an adaptor body portion and a whole, wherein a contact pin can be inserted through the hole. These keying features are intended to prevent improper coupling between mismatched lamps and sockets or insure that the lamp, when mated to the socket, may be rotated in only one direction.