Gas-filled incandescent lamp with integral fuse assembly

An electric incandescent lamp comprising;

• a vitreous envelope that contains an inert fill gas and is terminated at one end by an hermetic seal which has a pair of spaced ribbon-like conductors embedded therein,
• a filament or refractory metal wire suspended within said envelope,
• an inner lead-in conductor having one end disposed within the envelope and fastened to said filament and its other end embedded in said hermetic seal and connected to one of the ribbon-like conductors,
• means for preventing the formation of a destructive electric arc within the energized lamp when the filament fails comprising a non-coiled member of fusible metal that has one end electrically connected to a non-embedded part of said inner lead-in conductor which is located within said envelope and its opposite end embedded in the hermetic seal and fastened to the other of said ribbon-like conductors, and
• external connector means comprising an outer lead-in conductor that protrudes from said hermetic seal and has an end segment which is embedded in said hermetic seal and is electrically connected to the ribbon-like conductor which is fastened to said fusible metal member,
• said hermetic seal having an additional conductor member embedded therein which extends from an exposed surface of the hermetic seal toward and is secured to the ribbon-like conductor that is fastened to the inner lead-in conductor.