Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7872420 | Ceramic metal halide lamp having rated lamp wattage between 450 W and 1500W without flicker In a metal halide lamp having a rated lamp wattage of greater than or equal to 450 W, which includes: a translucent ceramic arc tube enclosure including: a main tube inside which a discharge space is formed; and two narrow tubes having smaller diameter than the main... | 01/18/2011 |
| 7868551 | Fluorescent tube having an increasing internal diameter, a method of driving the fluorescent tube, an illuminating device for display device, and a display device having the illuminating device A fluorescent tube in which no luminance gradient in the longitudinal direction occurs even when a one-side high-voltage driving method is used, a method of driving the fluorescent tube, an illuminating device for display device, and a display device having the illu... | 01/11/2011 |
| 7414366 | Single-ended discharge vessel with diverging electrodes A ceramic discharge vessel for a high-intensity discharge lamp includes a hollow body and two capillaries attached to the body. The capillaries have respective electrodes therein, where portions of the electrodes inside the body are spaced from each other and have l... | 08/19/2008 |
| 7394200 | Ceramic automotive high intensity discharge lamp A high intensity discharge lamp, the lamp including a light emitting vessel having a wall made of ceramic material that defines an inner space with a first end portion having a respective first opening formed therein and a second end portion having a respective seco... | 07/01/2008 |
| 7291981 | Short arc lamp with improved manufacturability A short arc lamp incorporates a cylindrical reflector body having a reflector cavity opening to a first end and an anode aperture through a base surface at a second end. The body has a step at the second end. A front sleeve with a step for positional engagement of a... | 11/06/2007 |
| 7239106 | System and method for facilitating fluid three-dimensional movement of an object via directional force A reeving system for filming movies, sporting events, or any other activity that requires fluid movement of a camera or other object to any position within a defined volume of space. To accomplish positioning embodiments move an object throughout three-dimensional s... | 07/03/2007 |
| 7187129 | High pressure gas discharge lamp and method of manufacturing the same High pressure vapor discharge lamp provided with a discharge vessel. The discharge vessel encloses a discharge space provided with a filling of mercury and a rare gas, for example, in a gastight manner. An electrode is arranged in the discharge space for generating ... | 03/06/2007 |
| 6927539 | Device and method for operating a high pressure discharge lamp An ultra-high pressure high pressure discharge lamp device in which the lamp voltage and the distance between the lamp electrodes can be kept stable is achieved by an operating device supplying an alternating current with rectangular waves to the discharge lamp and ... | 08/09/2005 |
| 6888311 | Ultrahigh pressure mercury lamp with an anode configured to have a high thermal capacity An ultrahigh pressure mercury lamp which is small and has high light radiation intensity and moreover good color reproduction with high efficiency in which, even with a large amount of mercury added, a failure of the mercury to vaporize in the bulb part does not occ... | 05/03/2005 |
| 6819048 | High pressure discharge lamp having a ceramic discharge vessel The discharge volume has an internal length L and a maximum diameter D at its center, with the discharge vessel being equipped with a light-emitting filling and with two electrodes at the ends of the discharge vessel, with the lamp being operated by means of high fr... | 11/16/2004 |
| 6800997 | Cold-cathode fluorescent lamp The present invention has an object to provide a cold-cathode fluorescent lamp which can suppress sputtering caused by electric discharge and reduce consumption of mercury so as to achieve a longer lifetime even if a lamp current is large and a lighting tube has a s... | 10/05/2004 |
| 6798139 | Three electrode ceramic metal halide lamp A ceramic body (14) for a discharge vessel (12) includes a central barrel portion (60) and two end plus (64, 66), which close opposite ends of the barrel. Main electrode (32, 34) and an initiator electrode 50 are supplied wi... | 09/28/2004 |
| 6707252 | Metal halide lamp A safety metal halide lamp with a high luminous efficiency and a long lamp life is provided. The metal halide lamp includes an arc tube made of light-transmissive ceramic, in which a pair of electrodes is provided and cerium iodide (CeI3) and sodium iodid... | 03/16/2004 |
| 6683411 | Discharge lamp, ultraviolet ray irradiation apparatus and method of using the apparatus Discharge lamp includes a synthetic quartz glass tube having an inside diameter of 8 mm or over and a pair of filaments provided within and at opposite ends of the glass tube with an L (cm) filament-to-filament distance, and rare gas and metal including a... | 01/27/2004 |
| 6624580 | High pressure electric discharge lamp A high pressure electric discharge lamp adapted to utilize dielectric barrier discharges can include an arc tube having a discharge space that contains at least a rare gas and an outer tube airtightly surrounding the arc tube. At least one material select... | 09/23/2003 |
| 6597115 | Light source device A light source device for a video monitor including a concave reflector with a middle opening and an optical axis, said optical axis being positioned tilted obliquely and a discharge lamp including an emission part with a cathode and an anode located oppo... | 07/22/2003 |
| 6566813 | Overvoltage protection device with concentric arcing horns An overvoltage protection device (1) with a first electrode (2) which has a first arcing horn (3), with a second electrode (4) which has a second arcing horn (5), with an air-breakdown spark gap (6) which is active between the arcing horns (3, 5), and wit... | 05/20/2003 |
| 6515423 | High-pressure discharge lamp The high-pressure discharge lamp comprises a lamp vessel (1) in which an anode (4) and a cathode (5) are disposed spaced apart by an electrode distance D of 1-2 mm, the anode (4) having a tip (9) with a blunt end surface S. The area of the end surface S i... | 02/04/2003 |
| 6501231 | Metal halide lightbulb strobe system The system contains a quartz arc tube surrounding a gas tight envelope containing mercury, a metal halide, a rare earth gas and a pair of end to end spaced apart tungsten electrodes attached at a distal end to a molybdenum foil seal. A circuit is provided... | 12/31/2002 |
| 6104134 | Fluorescent lamp A fluorescent lamp comprising a bulb, a fluorescent material coated on an internal surface of the bulb, a stem, a discharge chamber filled with gas and mercury, a thermal cathode filament coated with electron emitting material, lead wires passing air-tigh... | 08/15/2000 |
| 5986402 | Metal halide lamp A metal halide lamp with a distance of less than 3.0 mm between the electrodes, in which in the hermetically sealed portion no cracks occur, which can be produced without difficulty, and which enables advantageous operation is achieved with a halide lamp ... | 11/16/1999 |
| 5723944 | Metal halide lamp of the short arc type To minimize "color hue" and "flickering" on an irradiated surface such as a screen or the like, is achieved by the fact that, in a metal halide lamp of the short arc type which has a cathode and an anode in which at least rare earth halides and mercury ar... | 03/03/1998 |
| 5712530 | Mercury lamp of the short arc type having an electrode terminal with tantalum thereon A mercury lamp of the short arc type in which tantalum can absorb impurity gases to a sufficient degree even if the inside of the arc tube reaches a high temperature is achieved by providing an arc tube, within which mercury and an inert gas are encapsula... | 01/27/1998 |
| 5604400 | Overvoltage protection element An overvoltage protection element for discharging transient overvoltages, with two electrodes (2), a disruptive discharge-spark air between the electrodes (2) and a housing (4) containing the electrodes (2). Each electrode (2) has a connecting leg (5) and... | 02/18/1997 |
| 5589735 | Emission device with a cadmium lamp An emission device which operates a cadmium lamp with a light intensity sufficient for used in industrial applications is achieved by an emission device having a cadmium lamp with a fluorescent tube within which a cathode and an anode are space a small di... | 12/31/1996 |
| 5539271 | Horizontal burning metal halide lamp An improved arc tube for a horizontal burning metal halide arc discharge lamp is disclosed to avoid light output fluctuations which otherwise occur during lamp operation. The improved arc tube construction employs opposing planar pinch seal regions which ... | 07/23/1996 |
| 5483121 | Hollow cathode discharge tube A hollow cathode discharge tube is used for atomic absorption analysis. The tube has a cathode which includes a first hollow portion and a second hollow portion connected to each other. The second hollow portion has a diameter greater than the first hollo... | 01/09/1996 |
| 5210468 | Gas-discharge display element driven by using seed discharge In a gas discharge display element according to the present invention, two pairs of electrodes are arranged in a discharge space of a display cell and one of the electrode pairs which forms a first discharge space between the first electrodes is driven su... | 05/11/1993 |
| 5210463 | Metal halide low-power high-pressure discharge lamp Low-power, high-pressure discharge lamps, that is lamps having a power rag below and up to about 400 W, have a quartz discharge vessel retaining a metal halide fill which, to obtain a color temperature between 2700° to 3400° C. contains sodium and tin.... | 05/11/1993 |
| 5177407 | Glow discharge lamp having dual anodes and circuit for operating same An AC operated glow lamp having a cathode electrode and a pair of anode electrodes driven from a capacitively ballasted autotransformer that provides phase inversion so as to enable a full wave rectification of the discharge current thus operating in a DC... | 01/05/1993 |
| 5061877 | Discharge tube capable of stable voltage discharge An arc discharge device is formed by two electrodes which are hermetically sealed within a glass tube filled with an inert gas. One electrode is cup shaped, with an open end. The other electrode enters the open end and approaches the bottom of the cup sha... | 10/29/1991 |
| 5057741 | Glow discharge starter having dual gaps A glow discharge starter having an hermetically sealed envelope containing an ionizable medium, a bimetallic electrode including a bimetallic element, and a counter electrode. The bimetallic element has a free end adapted to form first and second discharg... | 10/15/1991 |
| 5055740 | Horizontal burning metal halide lamp An arc tube for a horizontally burning metal halide lamp having electrodes disposed below the axis of a generally cylindrical arc tube with an asymmetric pinch about the electrodes.... | 10/08/1991 |
| 5051655 | Electrodes for single ended arc discharge tubes Electrodes for a single ended arc discharge tube in which the electrodes diverging from the foil leads are generally concave towards each other between the lead-in wire ribbons and the free ends thereof from which the arc is drawn, the electrodes being sp... | 09/24/1991 |
| 5032768 | Gas discharge display device A gas discharge device having the characteristic of low discharge voltage, the construction being such that the cathode is surrounding the discharge space of the anode. A barrier and the cathode are each alternately formed with different height portions; ... | 07/16/1991 |
| 5027030 | Glow discharge lamp having zero anode voltage drop A glow discharge lamp includes a light-transmitting envelope containing a rare gas fill material. The envelope contains a spherical-shaped region having a predetermined internal radius R. A phosphor coating is disposed on the inner surface of the envelope... | 06/25/1991 |
| 5025190 | Glow discharge lamp A glow discharge lamp that includes a light transmitting envelope containing a noble gas fill material and a pair of electrodes disposed in the envelope. Lead-in wires coupled to the electrodes and extend to and are hermetically sealed in the envelope The... | 06/18/1991 |
| 4998036 | Metal vapor discharge lamp containing an arc tube with particular bulb structure A single end-sealed type metal vapor discharge lamp includes an arc tube having a bulb made up of a discharge portion defining a discharge region and a sealing portion with a shoulder portion situated adjacent to the discharge portion. A pair of electrode... | 03/05/1991 |
| 4990826 | Low voltage gas discharge device This invention provides an illumination device capable of producing large animated displays using glowing neon or other noble gases without the need for a source of high voltage as is required in normal neon signs. By means of large numbers of electrode p... | 02/05/1991 |
| 4988917 | Hooked electrode for arc lamp A hooked arc discharge lamp electrode may be formed with electrodes slanting towards each other and towards the electrode roots. The hooking back of the electrode tips forms a gap between the electrode tip and the electrode shaft that prevents the arc fro... | 01/29/1991 |
