Abstract: An electric lamp having a light source disposed in a light transmissive envelope, conductive lead-throughs extending from said light source through the envelope to the exterior, and a lamp base having a pair of contact terminals connected to the lead-throughs by clamping between two clamping portions of the terminals and welding of the clamping portions at two opposing surfaces of the lead-through. The terminals have a plating with a melting point low enough such that the plating forms a brazed joint with the lead-through when a welding current from a resistance welder is passed through the clamping portions and the respective lead-through.

Abstract: An electric lamp having a light transmissive envelope enclosing a light source, a circumferential mold-sealing member disposed on an end portion of said envelope, and a lamp base of synthetic material pressure molded onto the mold-sealing member and the envelope end portion. The mold-sealing member provides an effective seal with the corresponding edge of a base mold, allowing the base to be molded directly onto the lamp envelope. For envelopes sealed by a pinch or wedge press, the mold-sealing member is a circumferential ring and for stem-sealed lamps the mold-sealing member is a sealing cap which closes the stem cavity.

Abstract: An incandescent automotive lamp for mounting in a lamp socket comprising a light-transmitting envelope, an insulating base, and a plurality of conductive wires. The light-transmitting envelope contains an energizable light source and has a sealed-end portion. The insulating base includes a housing, a flange portion, a plurality of channels, and a divider portion. The housing has a cavity in which the sealed-end portion is secured. The flange portion is located on the housing and has a substantially bevelled frustum and a rim with diametrically opposed notches. Each channel passes through the housing and leads into the cavity. The divider portion depends from the bottom of the housing. The divider portion has a pair of substantially flat faces, a pair of sides, and a bottom. At least one of the faces is adjacent to the channels of the housing. Each side has a base notch. The conductive wires connect to the energizable light source and pass through the sealed-end portion of the envelope.

Abstract: The coiled tungsten filament of an incandescent lamp is made more resistant to sagging by exposing the filament to a vaporized phosphorus atmosphere so as to form tungsten monophosphide on the filament. The filament is subsequently heated in order to dissociate the tungsten monophosphide and evaporate the phosphorus therefrom.