BASELESS CARTRIDGE LAMP AND SOCKET THEREFOR

摘要

A dual filament lamp is installed in its cooperating socket without the use of intermediate base, cement or bulb stem. The elimination of the intermediate elements improves the ability to manufacture lamps having precise filament alignment with respect to their sockets. Portions of at least three filament support members which extend outside the lamp envelope are formed with loops which cooperate with at least three socket pins to limit installations of the lamp in the socket to a single rotational orientation. The loops may include bends or be of different lengths to provide the desired orientation.