Abstract:
A stranded outer lead wire assembly for a quartz pinch sealed lamp. The stranded outer lead wire assembly is a butt welded connection of a refractory metal outer pinch lead (e.g., molybdenum solid wire) and a stranded soft metal lead wire (e.g., nickel wire strands twisted together). The assembly is prefabricated and then welded to sealing foil to make a four part foliated lead wire assembly for pinch sealing in the quartz outer jacket. The foliated lead wire assembly and a quartz envelope lamp utilizing the stranded outer lead wire assembly are also claimed. The sealing machine is adapted to protect the stranded outer lead assembly with a water cooled sleeve. In an embodiment, the outer end of the stranded lead is fused to prevent fraying.
Abstract:
Devices and methods relating to insulation-free lead wires in compact fluorescent lamps are provided. For example, there is provided a compact fluorescent lamp including at least two lead wires. Each of the lead wires can be connected to a respective cathode of a respective discharge tube. The compact fluorescent lamp further includes a ballast circuit. The lead wires are isolated from one another without any insulation.
Abstract:
In a halogen-metal vapor lamp having a ceramic housing (2) and a current lead-through conductor (3) arranged in the ceramic housing, the glazed part of the current lead-through conductor (3) is a niobium alloy doped with phosphorus, in particular with 50 ppm to 0.5 wt. % phosphorus. The glazed part of the current lead-through conductor (3) preferably has inside the ceramic vessel (2) a shielding (4) from halides, which is connected to a tungsten electrode. The glazed part of a current lead-through conductor (3) in the form of a pin having a length of 5 to 30 mm and a diameter of 0.2 to 2 mm is a niobium alloy doped with phosphorus. For the glazing of current lead-through conductors in a ceramic burner, a current lead-through conductor made of a niobium alloy temperature-stabilized with phosphorus is glazed. For the production of halogen-metal vapor lamps having a ceramic housing (2) and a current lead-through conductor (3) arranged in the ceramic housing (2), the current lead-through conductor (3) is exposed to heat treatments at temperatures of at least 1000° C. and there does not soften so much that it bends.
Abstract:
A high pressure gas discharge lamp and the method of making same utilizing integrated circuit fabrication techniques. The lamp is manufactured from heat and pressure resistant planar substrates in which cavities are etched, by integrated circuit manufacturing techniques, so as to provide a cavity forming the gas discharge tube. Electrodes are deposited in the cavity. The cavity is filled with gas discharge materials such as mercury vapor, sodium vapor or metal halide. The substrates are bonded together and channels may be etched in the substrate so as to provide a means for connection to the electrodes. Electrodeless RF activated lamps may also be fabricated by this technique. Micro-lasers may also be fabricated by this technique as well.
Abstract:
An electric lamp includes a lamp vessel sealed in a gastight manner and having a wall of ceramic material. A current supply conductor is connected to an electric element arranged in the lamp vessel and issues to the exterior via a lead-through channel in the wall. The current supply conductor has a first part with a comparatively high and a second part with a comparatively low melting point, which parts form a welded joint with mutually facing ends. The first part merges into a narrowing end having a length L and having a circumference O at the transition, which length L is at least one tenth of the circumference O, while the end is embedded at least partly in the end of the second part. This induction has the advantage that the current supply conductor can be manufactured more efficiently and with less wastage.
Abstract:
Electric lamps having molybdenum metal parts exposed to an oxidizing environment can withstand exposure to higher operating temperature if the molybdenum metal parts are coated with silicon nitride (Si.sub.3 N.sub.4). Tungsten-halogen lamps having molybdenum outer leads coated with silicon nitride have operated for over 1500 hours at about 450.degree. C. without oxidation failure of the leads.
Abstract:
A conductive pattern board that comprises an electric insulation member and a plurality of electric conductive patterns. The patterns are formed on the insulation member. A recess is formed on the insulation member and between every two adjacent patterns.
Abstract:
Electric lamp inlead wires are provided with bends to shape them into desired configurations for holding a filament or arc tube. The bends are shaped to provide a small reverse bend section. This prevents an inherent springback tendency at the bends, and improves the permanency of the bent shapes.
Abstract:
An electric discharge tube is provided with a hermetically sealed leadthrough which electrically connects electrodes on the inner and outer walls of the envelope. The leadthrough consists of an aperture in the envelope having a conductive layer provided on the wall of the aperture. The aperture is hermetically sealed by means of a plug of thermally devitrified glass which is provided in the form of a suspension of a devitrified glass powder in an organic binder. To manufacture the leadthrough, the envelope of the tube is subjected to temperature treatments in which at a first temperature range the binder is fired from the suspension in an oxygen-containing atmosphere, and at a second temperature range the devitrifiable glass is devitrified in a non-oxidizing atmosphere. A hermetically sealed leadthrough results, without excessive oxidation of the electrodes, while the deformation of the glass envelope at the area of the leadthrough is avoided.
Abstract:
D R A W I N G THIS DISCLOSURE DEPICTS IMPROVED METHOD AND APPARATUS FOR AUTOMATICALLY PROCESSING FRONT PANELS OF CATHODE RAY TUBES IN A CONTINUOUS STEP-BY-STEP FASHION INCLUDING SPRAYING A LAQUER COATING ONTO A PHOSPHOR COATING ON THE PANELS. THE FRONT PANELS ARE LOADED IN A FRONT-SIDE-UP ATTITUDE ONTO AN ANNULAR ENDLESS CONVEYOR WHICH IS STEPPED AROUND A PLURALITY OF DISCRETE WORK STATIONS DISPOSED AROUND THE PERIMETER OF THE CONVEYOR, EACH OF THE WORK STATIONS BEING ADAPTED TO PERFORMED AT LEAST ONE PREDETERMINED OPERATION ON THE PANELS. LACQUER APPLICATOR MEANS IS SITUATED IN AT LEAST ONE SAID WORK STATIONS FOR APPLYING A LACQUER COATING ON THE PANELS. ENCLOSURE MEANS ARE PROVIDED FOR ENCLOSING THE LAQUER APPLICATOR AND ASSOCIATED DRYING STATIONS TO PREVENT ESCAPE OF LAQUER VAPORS TO THE ENVIRONMENT. VERTICALLY MOVABLE SHROUD MEANS ARE PROVIDED AT THE LAQUER APPLICATION STATION FOR ENSHROUDING THE PANELS DURING THE LAQUER APPLYING OPERATION TO MINIMIZE AIR CURRENTS WHICH MIGHT DISTURB THE SURFACE OF THE WET LACQUER.