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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 8188663 | High intensity discharge lamp A high intensity discharge lamp comprising a discharge vessel having a wall enclosing a discharge space, an ionizable material contained in said space, and at least two electrodes each having an embedded portion and an electrode shaft extending from the wall of the ... | 05/29/2012 |
| 8183780 | Discharge lamp and method for producing a bulb neck for a discharge lamp The invention relates to a discharge lamp with a discharge vessel (2) and at least one bulb neck (I, II) connected thereto with an inner quartz bar (6) and a first foil arrangement (9), which is arranged on the outer side (63) of the quar... | 05/22/2012 |
| 8174194 | Discharge lamp, light source device and projector A discharge lamp includes: an emitting portion in which a pair of electrodes are disposed, an electric discharge being generated between the pair of electrodes so as to emit light; at least either one electrode of the pair of the electrodes including: a small-diamet... | 05/08/2012 |
| 8169145 | Spark-discharge gap for power system protection device A spark gap includes two terminal electrodes enveloping a cavity. The cavity includes an electrical discharge space between the two terminal electrodes. The spark gap also includes an electrical insulator between the two terminal electrodes. ... | 05/01/2012 |
| 8159135 | Electrode for high pressure discharge lamp, high pressure discharge lamp, and method for manufacturing electrode for high pressure discharge lamptechnical field Provided is an electrode for a high pressure discharge lamp, which prevents spring-back of an electrode coil, and which has high productivity and high accuracy in positioning the coil. The electrode for the high pressure discharge lamp includes: an electrode core ba... | 04/17/2012 |
| 8159134 | Arrays of microcavity plasma devices and electrodes with reduced mechanical stress A preferred embodiment low stress electrode and a preferred array of microcavity plasma devices of the invention include a plurality of thin metal first electrodes and stress reduction structures and/or geometries designed to promote the flatness during and after pr... | 04/17/2012 |
| 8138675 | Stabilized emissive structures and methods of making An emitter is disclosed. The emitter includes a base layer comprising an array of nanocavities on an emission surface of the base layer, wherein facets of the nanocavities are substantially along equivalent crystallographic planes of one or more families of planes h... | 03/20/2012 |
| 8106588 | Dielectric barrier discharge lamp It is provided a dielectric barrier discharge lamp (10) for providing ultraviolet light, comprising an outer tube (12) filled with a discharge gas for providing ultraviolet light, an inner tube (14) arranged at least partially inside the outer t... | 01/31/2012 |
| 8089212 | Lower turn per inch (TPI) electrodes in ceramic metal halide (CMH) lamps An electrode assembly for a discharge lamp, particularly a ceramic metal halide (CMH) lamp, having a ceramic body defining a discharge chamber and at least one leg having an opening therethrough. An electrode assembly is received at least in part in the body, prefer... | 01/03/2012 |
| 8072146 | Fluorescent lamp The disclosed subject matter includes a fluorescent lamp and particularly a cold cathode fluorescent lamp that can be employed as a light source for a LCD backlight unit for a television, a computer, a display, and the like. The fluorescent lamp can include a couple... | 12/06/2011 |
| 8018156 | High-pressure discharge lamp having a ceramic discharge vessel High-pressure discharge lamp having a ceramic discharge vessel, in which two electrodes and a light-emitting filling are contained, wherein capillaries are positioned at the ends of the discharge vessel, in which capillaries leadthroughs are sealed off, which leadth... | 09/13/2011 |
| 8018155 | Short arc type high voltage electrical discharge electrode, short arc type high voltage electrical discharge tube, short arc type high voltage electrical discharge light source apparatus, and their manufacturing methods A short arc type high voltage electrical discharge electrode includes an electrode center spindle made from a refractory metal and having a tip; and an electrode main body made from a refractory metal and disposed at the tip of the electrode center spindle. The elec... | 09/13/2011 |
| 8013532 | Extra-high pressure discharge lamp An extra-high pressure discharge lamp, comprises an optical transparent light emitting section, sealing sections connected to the light emitting section, a pair of electrodes which face each other in the light emitting section, wherein one of the electrodes having a... | 09/06/2011 |
| 7999475 | Short arc type discharge lamp A short arc type discharge lamp has a pair of electrodes, at least one of which has an electrode body and an axis part. A taper part is formed at a base side of the electrode body. Plural holes extending in an axis direction of the electrode in line are formed at th... | 08/16/2011 |
| 7952283 | High intensity discharge lamp with improved crack control and method of manufacture A high intensity discharge lamp comprises an arc tube, which encloses an arc chamber. The arc chamber contains a gas fill and the arc tube is terminated by at least one sealed portion. The sealed portions enclose an electrode assembly. The electrode assembly compris... | 05/31/2011 |
| 7800307 | Electrode and extra-high pressure discharge lamp using the same An electrode for an extra-high pressure discharge lamp, comprises large diameter portion which is symmetrical with respect to an axis of the electrode, a small diameter portion connected to the large diameter portion, wherein the large diameter portion is connected ... | 09/21/2010 |
| 7759872 | Discharge lamp A discharge lamp in which fluctuation of the arc when the lamp starts and in which devitrification and damage of the arc tube are prevented, so that light intensity can be kept uniform over a long time is achieved by the cathode having a tapering part with a diamete... | 07/20/2010 |
| 7755292 | Ultraminiature broadband light source and method of manufacturing same An ultraminiature light source using a double-spiral shaped tungsten filament includes end contact portions which are separated to allow for radial and length-wise unwinding of the spiral. The double-spiral filament is spaced relatively far apart at the end portions... | 07/13/2010 |
| 7733026 | Lamp with an improved lamp behaviour The invention relates to a Hg free high pressure discharge lamp having a quartz envelope and a halide filling, wherein the lamp comprises at least one electrode which comprises tungsten and ≧0 wt. % and ≦0.5 wt. % thorium and whereby the lamp comprises at least ... | 06/08/2010 |
| 7719193 | Discharge lamp cathode having tip, middle, and body portions A discharge lamp includes a cathode and an anode which face each other in an arc tube, wherein the cathode is made of tungsten in which thorium oxide is doped. The cathode has a cylindrical body portion, a tip portion having a cone shape, and a middle portion formed... | 05/18/2010 |
| 7705538 | High-pressure discharge lamp A high-pressure discharge lamp includes a quartz glass discharge chamber (1) having at least one end (11) provided with a molybdenum film sealing element (2) and at least one electrode (4) which is connected to the sealing element (2 | 04/27/2010 |
| 7671536 | Arc tube for discharge lamp device A mercury-free arc tube for a discharge-lamp device having a sealed glass chamber with at least metallic halide for main light emission and rare gas. Both end openings of a glass tube are pinch-sealed and electrode bars are provided so as to oppose to each other. Ea... | 03/02/2010 |
| 7649319 | Ultra-high pressure mercury lamp An ultra-high pressure mercury lamp in which the tungsten comprising the electrodes is prevented from spraying during starting and operation, and blackening on the inside wall of the arc tube is prevented is achieved in that at least one of the electrodes has an axi... | 01/19/2010 |
| 7642721 | High pressure discharge lamp A high pressure discharge lamp can be used in a vehicle lighting device as a light source in place of a halogen lamp, and can be driven with a reduced starting voltage while being miniaturized. A gas is filled in a space between an arc tube and an outer tube of the ... | 01/05/2010 |
| 7642720 | Addressable microplasma devices and arrays with buried electrodes in ceramic An array of microcavity plasma devices is formed in a ceramic substrate that provides structure for and isolation of an array of microcavities that are defined in the ceramic substrate. The ceramic substrate isolates the microcavities from electrodes disposed within... | 01/05/2010 |
| 7635950 | Short-arc type high pressure discharge lamp having gaps formed among electrode axes, metal foils and a glass material surface A short-arc type high pressure discharge lamp in which durability is improved and a lamp apparatus including the same is provided. Glass material portions 52A into which glass material enters respectively are provided on both sides of an electrode axis... | 12/22/2009 |
| 7633227 | Discharge lamp with lamp base structure The invention relates a high-pressure discharge lamp, which comprises: an outer bulb (1) in which a discharge vessel (11) is arranged around a longitudinal axis (22), the discharge vessel enclosing, in a gastight manner, a discharg... | 12/15/2009 |
| 7573202 | Metal/dielectric multilayer microdischarge devices and arrays A microdischarge device that includes one or more electrodes encapsulated in a nanoporous dielectric. The devices include a first electrode encapsulated in the nanoporous dielectric and a second electrode that may also be encapsulated with the dielectric. The electr... | 08/11/2009 |
| 7501764 | Fluorescent lamp and method of manufacturing same A cold cathode fluorescent tube where an electron emitting electrode is sealed in shows much deterioration in the luminance with time, thereby being not adequate for a long time use. The electrode emitting electrode is formed in such a shape that an electric field i... | 03/10/2009 |
| 7495396 | Dielectric barrier discharge lamp A dielectric barrier discharge lamp is disclosed, which comprises a discharge vessel having a principal axis. The discharge vessel encloses a discharge volume filled with a discharge gas. The discharge vessel further comprises end portions intersected by the princip... | 02/24/2009 |
| 7466080 | Flat-type fluorescent lamp and liquid crystal display device having the same A flat-type fluorescent lamp includes a lamp body and a first external electrode. The first external electrode is positioned on an end portion of the lamp body. The first external electrode includes a main electrode portion and a first auxiliary electrode portion. T... | 12/16/2008 |
| 7446477 | Dielectric barrier discharge lamp with electrodes in hexagonal arrangement A dielectric barrier discharge lamp comprises a discharge vessel that has a principal axis, the discharge vessel encloses a discharge volume filled with a discharge gas. The discharge vessel further comprises end portions intersected by the principal axis. There are... | 11/04/2008 |
| 7443100 | ARC tube discharge lamp with compression strain layer In a mercury-free arc tube, electrodes are configured by electrode rods heat-treated at 1,200 to 2,200° C. in a vacuum atmosphere, and which have a thickness of 0.3 mm or more. The size (radius R) of a residual compression strain layer formed around the electrode r... | 10/28/2008 |
| 7423369 | Cold cathode for discharge lamp having diamond film A cold cathode for a discharge lamp includes a metal plate that has bending portions; a diamond film that is formed on a face of the metal plate, except for the bending portions; and a metal member that is mounted on the metal plate. ... | 09/09/2008 |
| 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 |
| 7397191 | High pressure discharge lamp having a conical part and a cylindrical body part A high pressure discharge lamp in which the cathode has a cylindrical body part and a conical part which is doped with thorium dioxide (ThO2), and with a diameter which decreases in a direction from the body part toward the tip area of the conical part by... | 07/08/2008 |
| 7388330 | Plasma display panel having electrode shorted segment with electrode void regions formed therein A display panel comprising a substrate, a plurality of first electrodes formed on a surface of the substrate and extending from a first portion of the substrate, and a plurality of second electrodes formed on the surface of the substrate and extending from a second ... | 06/17/2008 |
| 7385350 | Arrays of microcavity plasma devices with dielectric encapsulated electrodes The invention concerns microcavity plasma devices and arrays with thin foil metal electrodes protected by metal oxide dielectric. Devices of the invention are amenable to mass production techniques, and may, for example, be fabricated by roll to roll processing. Exe... | 06/10/2008 |
| 7385342 | Flat lamp for emitting lights to a surface area and liquid crystal display using the same A flat lamp for emitting light to a surface area of a liquid crystal display device includes a bottom having a channel uniformly crossing an entire surface of the bottom, an arc-discharging gas is disposed within the channel, a cover disposed upon an upper junction ... | 06/10/2008 |
| 7378786 | Surface light source device and liquid crystal display apparatus having the same A surface light source device may include a first substrate and a second substrate having a plurality of space-dividing portions to divide an inner space between the first and second substrates into a plurality of discharge regions. First and second electrodes may b... | 05/27/2008 |
