Internal shunt for series connected lamps
AssigneeGeneral Electric Company
InventorLewis J. Schupp
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Abstract
An improved operation shunt for series connected incandescent-type lamps is disclosed utilizing a novel shunt material composition comprising an admixture of conductive metal particulates, an inorganic binder, and conductive non-metallic particulates and which is adhesively bonded to an insulative bead member interconnecting the spaced apart lamp inleads.
Claims10
In an incandescent lamp having a light-transmitting envelope, a refractory metal filament connected between a pair of metal inleads and said inleads being spaced apart by an electrically insulative bead member, the improvement wherein a shunt material comprising an admixture of conductive metal particulates, an inorganic binder, and conductive non-metallic particulates exhibiting voltage breakdown behavior, is adhesively bonded to said insulative bead member interconnecting and in physical contact with both spaced apart inleads, wherein the proportions in said admixture are maintained so that electrical conduction continues to take place between the metal particles after the breakdown voltage has been exceeded.
In an incandescent lamp having a light-transmitting glass envelope, a tungsten metal filament connected between a pair of metal inleads, said inleads being spaced apart by a glass bead member, and said lamp glass envelope being hermetically sealed to said inleads, the improvement wherein a shunt material comprising an admixture of conductive metal particulates, an inorganic binder, and conductive non-metallic particulates exhibiting voltage breakdown behavior is adhesively bonded to said glass bead member interconnecting and in physical contact with both spaced apart inleads wherein the proportions in said admixture are maintained so that electrical conduction continues to take place between the metal particles after the breakdown voltage has been exceeded.
Dependencies are inferred from the claim text.