Abstract: An electric lamp assembly which includes a bulb unit having a rectangularly shaped hermetic seal portion through which lead wires from a filament extend to the outside of the bulb unit, a bulb holder having a rectangularly looped band portion which grips the hermetic seal portion of the bulb unit with the lead wires projected outwardly from the bulb holder, a base assembly of moulded plastics supporting tightly the bulb holder and terminal members held by the base assembly and having inward ends projected toward the lead wires and welded to the same. The base assembly includes a hollow base structure and a rounded core structure which is coupled and welded to each other.

Abstract: A multi-planar, one-piece wire insert for supporting a coil filament body in an electric incadescent lamp in which the wire insert includes a top leg disposed in a plane out of the main plane of the insert so as to permit the coil filament body, as wound, to fit (match) the insert directly without requiring alteration to the ends of the coil filament body and/or changing of the wound coil geometry.

Abstract: A limited power, gaseous discharge lighting system, particularly suitable for use with suspended ceilings and for safe installation without shock and/or fire hazard and for rearrangement by non-electricians without special tools or experience, the light output of which is controlled by an electronic controller which responds to the ambient light available. The system uses non-armored flexible cables to supply individual relocatable gaseous discharge lighting fixtures and dimmers, and the cables are individually plugged into receptacles which furnish power strictly limited to permit the safe use of the cables, plugs and receptacles. High frequency operation permits efficient operation with rated light output and an electronic controller furnishes additional versatility and economy.

Abstract: To permit connection of a high temperature resistant plastic material forg a bulb holder element (4, 15, 20) to which a light bulb (1, 14, 19) is attached in the tubular opening of the base structure (5, 16), the bulb holder element is essentially barrel-shaped to permit alignment of the bulb with respect to the base structure, and subsequent connection by welding together the plastic base structure with the plastic bulb holder element by exposure to a high-frequency field. To cause melting of the plastic, ferromagnetic material, typically a nickel-iron alloy, is located between the bulb holder element and the base structure, for example in form of a ring (11) snapped into a groove (12) formed on the holder element.

Abstract: The device consists of a series network of a rectifier and a choke connected in parallel with a gas-discharge vessel and a capacitor. Between an intermediate tap of the primary of the saturating transformer and the positive terminal of the recitifer a thyristor is connected so that its cathode is connected with the intermediate tap. The control circuit of the thyristor consist of connected with each other secondary of the saturating transformer, unit for control pulse shaping, whose input is connected with the output of a voltage sensor mounted across the gas-discharge vessel. Between the intermediate tap of the primary of the saturating transformer and the positive terminal of the rectifier a series circuit of a diode and a second choke is connected so that the anode of the diode is connected with the intermediate tap.

Abstract: A thin film EL display device comprising a transparent conductive film formed on a transparent substrate, a first EL emission film formed on the transparent conductive film directly or by way of an insulation film, at least one set of voltage applying electrodes not connected electrically with each other and formed on the EL emission film directly or by way of an insulation film, a second EL emission film formed on the voltage applying electrode directly or by way of an insulation film and a conductive film formed on the second EL emission film directly or by way of an insulation film. Multi-color display is possible by the combination of emission color of the first EL emission film and/or the emission color of the second emission film. Easy lead out for the electrode is possible and pattern shape and width can optionally be set not restricted to the material for the transparent conductive film.

Abstract: A luminaire using a tungsten-halogen lamp, includes a circuit for supplying the lamp with a boosted D.C. operating voltage. The circuit includes a full-wave rectifying circuit for receiving a standard A.C. mains supply voltage, and a low pass filter connected to the output of the rectifier. The value of the time constant of the filter is chosen to produce at the rectifier output, an average D.C. voltage of about between 135 and 146 volts, preferably about 140 volts.

Abstract: A wall box dimmer is connected to a conventional fluorescent lighting system for providing a wide range of dimming. Overvoltages generated during chopping of the AC input waveform are dissipated and the lighting level is modified to reduce the overvoltages. DC power for the control electronics is derived from the voltage across the dimmer.

Abstract: An incandescent electric lamp with a concave conical foil filament suspended by mounting tabs inside a ring conductor between concave conical front and rear bulb walls. Current flows from a center post conductor through the foil filament to the ring conductor to the base. A reflective plate is mounted behind the foil filament to return heat to the filament.

Abstract: An incandescent electric lamp with a flat circular foil filament which emits a circular beam of maximum intensity in the direction perpendicular to the filament. The filament is mounted inside a ring conductor and has a reflective rear plate which returns heat to the filament as means of increasing the incandescence.Current flows from a center post conductor through the filament to a ring conductor.