Abstract: An electric lamp construction is described having a pair of conductive inlead wires of dispersion-strengthened copper alloy to serve as the sole means of physical support for a resistive incandescent filament electrically connected thereto, wherein said inlead wires have a surface metallurgical structure of fibrous dispersion-strengthened copper alloy. Said metallurgical surface of the inlead wires can further serve to enhance bonding of other materials thereto including metals such as nickel and aluminum as well as nonmetallic gettering materials such as phosphorous compounds.

Abstract: A tubular incandescent lamp comprises an elongated tubular envelope and a filament assembly disposed longitudinally extending in the tubular envelope by means of ring-like anchors. The filament assembly comprises a plurality of coil-shaped filaments, subcoils coupled with the filaments and connectors formed by strand wires. The ends of the connector are fitted into the subcoils and fixed therein.

Abstract: The planar multi-coil filament of a high-wattage halogen-cycle incandescent lamp is suspended within the envelope by a mount assembly having support rods that are fastened to the lead-in conductors, the ends of the filament and the insulating bridge members by mechanical means rather than metal-to-metal welds. The mechanical junctures are effected by providing a coiled portion on one of the components and then crimping or hot-clamping it around the inserted part of the other component. The expense and quality control problems encountered with tungsten-to-tungsten and molybdenum-to-tungsten welds in the prior art halogen-cycle lamps are thus eliminated. Lamp cost is further reduced by fabricating the envelope from a selected hard glass and, in the case of lamps having large planar filaments, distortion of the filament coiled sections is prevented by modifying the mount structure to provide a "floating bridge" action.

Abstract: A multihundred watt incandescent projection lamp has a continuous coiled filament in a rectangular area in front of a reflector, the filament comprising folded segments two of which extend substantially parallel from two lead wires into the envelope of the lamp. The coil end turns of the filament telescope over the lead wire ends which comprise the sole electrical supply, the sole support for the filament and also for the reflector.

Abstract: The invention relates to halogen incandescent lamps for use in photoreproduction processes and with a simple and cheaper filament construction. In this construction the filament sections emitting light during operation form one assembly with the connection conductors interconnecting them and connection conductors of a large length have in one or more places helically wound turns which are shortcircuited by a support connected thereto.

Abstract: A high power tungsten-halogen lamp having a filament arrangement suspended between a pair of alumina bridge members which are supported by a pair of vertically disposed tungsten rods. To provide a ruggedized mount, the free ends of the vertical rods are retained in respective externally protruding cavities provided in the dome of the lamp envelope.

Abstract: An electric incandescent lamp and method of manufacturing same in which two filaments stretched in frames are arranged. The frames are coupled together by a brace having a central portion which is incorporated in the exhaust tube seal in the upper wall of the lamp envelope.

Abstract: An incandescent lamp such as a tungsten filament lamp in which the filament is a series of alternate active coil sections and inactive straight sections. The surrounding glass envelope is correspondingly drawn down around the straight sections to reduce the volume of the envelope and to provide mechanical support for the filament.

Abstract: In a tubular, double ended electric incandescent lamp in which the filament comprises coiled segments spaced from each other, the filament coiled segments are electrically connected by means of skip space wire sections coiled at each end thereof, which are threaded onto the filament segments.