End Plug Seal Patents (Class 313/625)
  • Patent number: 10395879
    Abstract: According to one embodiment, a tungsten alloy includes 0.1 to 5 wt % of Zr in terms of ZrC.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: August 27, 2019
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.
    Inventors: Shinichi Yamamoto, Kayo Nakano, Hiromichi Horie
  • Patent number: 9437615
    Abstract: A ceramic metal halide lamp according to various embodiments can include a discharge vessel and an ionizable fill. The ionizable fill is sealed within the discharge vessel. The ionizable fill includes an oxygen dispenser to introduce oxygen in a form of a pellet into the discharge vessel in a controlled manner to facilitate a tungsten halogen wall cleaning cycle. The pellet comprises aluminum-oxide and molybdenum-oxide.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: September 6, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Agoston Boroczki, Peter Horvath, Istvan Kerenyi, Sandor Sebok, Anna Inczedy
  • Patent number: 9218950
    Abstract: A ceramic discharge vessel for discharge lamps is provided, with a central main part which extends between the tips of two electrodes and which is essentially tubular and with two ends for fixing and sealing an electrode system, wherein the ceramic discharge vessel has a longitudinal axis and wherein the main part consists of two halves which are connected in the middle of the main part wherein the two halves are frustoconically shaped with a draft angle p of 0.5°?p?7.0°.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: December 22, 2015
    Assignee: OSRAM GMBH
    Inventors: Chad Coughlin, Thomas Wichmann
  • Patent number: 9082606
    Abstract: A high-pressure discharge lamp may include a discharge vessel, which encloses a discharge volume, wherein a filler is housed in the discharge volume, wherein the discharge vessel is equipped with an end which is tubular and in which a two-part feedthrough is sealed by means of glass solder, wherein an electrode is attached to the feedthrough, which protrudes into the discharge volume, wherein the feedthrough is composed of a front part and a rear part, wherein the rear part is manufactured from niobium material and the front part is manufactured from iridium.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: July 14, 2015
    Assignee: Osram GmbH
    Inventors: Paul Braun, Klaus Stockwald
  • Publication number: 20150084501
    Abstract: Provided is an electrode assembly for a CMH lamp containing: primary mandrel surrounded by a secondary mandrel, which is nested inside of a coil overwind. The assembly of the primary mandrel, secondary mandrel, and coil overwind are connect to an electrode on one end and a lead wire on the other end and housed in ceramic housing. This assembly is efficient for increased thermal resistance of a CMH electrode while at the same time allowing seal glass to penetrate seal voids within the ceramic assembly.
    Type: Application
    Filed: September 25, 2013
    Publication date: March 26, 2015
    Applicant: General Electric Company
    Inventors: Agoston Boroczki, Akos Peter, Erazmus Gerencser
  • Publication number: 20150008821
    Abstract: A discharge lamp including an arc envelope defining a chamber and a first opening. A plug is positioned in the first opening through a first seal. The lamp further includes a dosing tube extending away from the chamber, and having a passageway extending into the chamber through a second opening in the arc envelope. The dosing tube is coupled to the arc envelope via a second seal. The first seal, the second seal, or both seals include a braze material having an active metal element in an amount ranging from about 0.1 weight percent to about 10 weight percent, based on the total weight of the braze material.
    Type: Application
    Filed: July 3, 2014
    Publication date: January 8, 2015
    Inventors: Sundeep KUMAR, Mamatha NAGESH, Raghu RAMAIAH
  • Patent number: 8853923
    Abstract: A discharge tube of the present invention includes a glass bulb in which noble gas is enclosed, a pair of electrodes protruding from both ends of the glass bulb in the longitudinal direction of the glass bulb, and a connector connected to each of the electrodes. Each of the electrodes includes at least an axis section and a large-diameter section with a step section and a circumferential face. The step section has a first latching section for latching onto the connector. The circumferential face has a contact section with which the connector comes in contact. The connector includes a connector body into which the electrode is inserted, a second latching section for latching onto the first latching section of the electrode, and a connecting section connected to the contact section of the electrode. This achieves a discharge tube with high connection reliability and high heat radiation efficiency, and a light-emitting apparatus provided with this discharge tube.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: October 7, 2014
    Assignee: Panasonic Corporation
    Inventors: Erika Kawabata, Katsushi Sumisaki
  • Patent number: 8795019
    Abstract: To prevent bending of an electrode shaft portion by a method which requires minimum increase in production cost, in an electrode mount for a high pressure discharge lamp. A manufacturing method of an electrode mount for the high pressure discharge lamp includes: a process of subjecting the electrode mount to a heat treatment, the electrode mount including an electrode and a metal foil which are welded to each other; and an oxidation process of producing an oxide on a surface of the electrode shaft portion of the electrode by laser irradiation to form an oxidation portion on the surface, wherein a laser irradiation position is determined such that a whole or part of the oxidation portion is included in a sealing portion of the high pressure discharge lamp when the electrode mount is embedded in the sealing portion.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: August 5, 2014
    Assignee: Iwasaki Electric Co., Ltd
    Inventors: Atsushi Ohno, Kazushi Tominaga, Shinichi Takemasa
  • Publication number: 20140175976
    Abstract: A high-pressure discharge lamp may include a discharge vessel, which encloses a discharge volume, wherein a filler is housed in the discharge volume, wherein the discharge vessel is equipped with an end which is tubular and in which a two-part feedthrough is sealed by means of glass solder, wherein an electrode is attached to the feedthrough, which protrudes into the discharge volume, wherein the feedthrough is composed of a front part and a rear part, wherein the rear part is manufactured from niobium material and the front part is manufactured from iridium.
    Type: Application
    Filed: May 17, 2011
    Publication date: June 26, 2014
    Applicant: OSRAM GMBH
    Inventors: Paul Braun, Klaus Stockwald
  • Publication number: 20140070695
    Abstract: A voidless CMH lamp and a method of making such a lamp are provided. The CMH lamp includes a lamp body that receives at least one end plug. The end plug is constructed from a core of cermet material received within an outer layer of a ceramic material. An electrode is placed into the cermet material. The application of heat causes the cermet material to contract and eliminate voids between the lamp and cermet material. Co-sintering of the lamp, core, and outer layer provides a hermetic seal without necessarily using e.g., a sealing frit. Sintering of the ceramic material surrounding the cermet can be also used to improve light output and photometric performance of the lamp. The creation of one or more openings or recesses in the end plug can also provide performance improvements.
    Type: Application
    Filed: December 21, 2012
    Publication date: March 13, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Raghu RAMAIAH, Miles Elliot RICHARDS, David Allen THOMPSON
  • Patent number: 8519623
    Abstract: A high-pressure discharge lamp comprising two electrodes (16, 18), which are arranged facing each other in a discharge vessel (6) and are each in electric contact via a current feed system (20, 24, 26, 28, 30), wherein each current feed system penetrates a piston shaft (9,10) arranged in a gastight manner on the discharge vessel (6), wherein in the region of the outer current feed (28, 30) of at least one piston shaft (9) a cooling element (12) is arranged, and wherein the outer current feed (28, 30) and the cooling element (12) are in direct thermal and electric contact.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: August 27, 2013
    Assignee: OSRAM GmbH
    Inventors: Rainer Koger, Adam Kotowicz, Bernhard Winzek
  • Patent number: 8390195
    Abstract: A high pressure discharge lamp may include a ceramic discharge vessel and a longitudinal axis, wherein at least one electrode is led out of the discharge vessel by means of a metal-containing feed-through, wherein the feed-through is connected to one end of the discharge vessel by way of a ceramic-containing adjustment part, wherein the adjustment part is tubular and consists of individual layers with different compositions, at least two materials A and B forming a plurality of layers of the adjustment part, these materials being chosen such that their coefficient of thermal expansion is between that of the feed-through and that of the end of the discharge vessel or at most is just outside, the layer thickness of each layer being so low that no shearing forces can occur, and the layer thickness of each layer of the same material being different.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: March 5, 2013
    Assignee: Osram AG
    Inventors: Roland Huettinger, Stefan Juengst, Stefan Kotter, Steffen Walter
  • Patent number: 8368304
    Abstract: In various embodiments, a discharge lamp may include a lamp vessel that includes a discharge vessel enclosing a discharge medium and two lamp shafts each extending coaxially at opposite ends of the discharge vessel, two outer power-feed sections each extending to the outside from one of the lamp shafts, two electrodes each consisting of an electrode rod and electrode head, with the electrode rods being arranged along the lamp shafts such that the two electrode heads are located mutually opposite inside the discharge vessel, a sealed section in each of the two lamp shafts by which a gas-tight electricity passage is formed between the two outer power-feed sections on the one hand and the two electrodes on the other, a narrow section in each of the two lamp shafts that is arranged between the respective sealed section and the electrode head of the associated electrode, with the narrow section closely surrounding the electrode rod, and a damping/guiding element arranged between the narrow section of a lamp shaft
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: February 5, 2013
    Assignee: OSRAM AG
    Inventors: Swen-Uwe Baacke, Bernhard Ruhland, Wolfgang Seitz, Christian Wider
  • Patent number: 8350475
    Abstract: The invention relates to a high-pressure gas discharge lamp (8) for a lighting device, in particular for a headlight unit of a motor vehicle, with an electronic ignition system (9) that is arranged inside a lamp cap housing (1, 2) that comprises an upper part (1) and a cover (2), wherein said upper part (1) is provided with an opening (1.1) within which a high-voltage connection (4) between the high-pressure gas discharge lamp (8) and the electronic ignition system (9) is present, the cover (2) projects into said opening (1.1) and closes off this opening (1.1) in an insulating manner, and the mutually facing surfaces of the upper part (1) and the cover (2) form a labyrinth (3) that is interrupted by an insulating element (5).
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: January 8, 2013
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Wolfgang Daub, Michael Eusterbrock, Gideon Kanne
  • Patent number: 8319431
    Abstract: A High Intensity Discharge lamp and method of making same having an arc tube defining a discharge chamber with opposite ends of the tube each receiving an electrode extending into the discharge chamber and define an axial gap therebetween. A thermal shield extends from each opposite end of the arc tube and defines a radial gap with the tube. The thermal shields in some embodiments extend from end plugs in the arc tube; and, in another embodiment use formed, integrally with one arc tube sections and the tube sections joined.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: November 27, 2012
    Assignee: General Electric Company
    Inventors: Agoston Boroczki, Istvan Csanyi, Christopher E. Omalley, Attila Agod, Venkata Subbaiah Chennamshetty, Shanmugam Venkatachalam Ravi, Guy Henry Turner
  • Patent number: 8299709
    Abstract: A lamp is provided with an axially and radially graded structure to reduce the possibility of thermal stresses, cracks, and other defects in the lamp. In one embodiment, a system includes a ceramic lamp having a ceramic arc envelope and an end structure coupled to the ceramic arc envelope, wherein the end structure is graded both axially and radially into a plurality of regions. In another embodiment, a system includes a lamp having a layered end structure with a plurality of layers disposed one over another and that extend in both axial and radial directions relative to an axis of the lamp, wherein the plurality of layers include different materials having different coefficients of thermal expansion, Poisson's ratios, or elastic moduli, or a combination thereof.
    Type: Grant
    Filed: February 5, 2007
    Date of Patent: October 30, 2012
    Assignee: General Electric Company
    Inventors: Bernard Patrick Bewlay, Dennis Joseph Dalpe, Bruce Alan Knudsen, Mohamed Rahmane, Svetlana Selezneva, James Scott Vartuli, James Anthony Brewer
  • Patent number: 8174193
    Abstract: A vehicular discharge lamp includes a pair of electrodes including sealed portions sealed in a pair of pinch seal portions of a light emitting tube, wherein each of the sealed portions is segmented into: a first intermediate region positioned in the middle of the electrode in an axial direction; two end regions configured as both end portions of the sealed portion in the axial direction; and two second intermediate regions positioned between the first intermediate region and the end regions, respectively, wherein concave or convex fabrication portions are formed in the second intermediate regions, and wherein a ratio of formation area of the fabrication portions to an area of an outer peripheral surface of the first intermediate region is set to be smaller than that of the formation area of the fabrication portions to an area of outer peripheral surfaces of the second intermediate regions.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: May 8, 2012
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Masaya Shido, Masato Harazaki
  • Patent number: 8118447
    Abstract: Disclosed is a LED lighting apparatus with one or more swivel connections. The LED lighting apparatus includes a housing with at least one end, at least one light emitting diode extending along the housing and at least one end cap. The end cap has an opening with a sidewall to cap the end of the housing and a surface opposite the opening and spanning the sidewall. At least two pin connectors extend from the surface and are connectable to a standard fluorescent or incandescent light fixture. Various configurations are described such that the housing will rotate within the end caps with application of a rotational force after connection of the pin connectors to the light fixture to adjust the light output direction of the LED lighting apparatus.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: February 21, 2012
    Assignee: Altair Engineering, Inc.
    Inventors: David L. Simon, John Ivey
  • Patent number: 8115389
    Abstract: To provide a high pressure discharge lamp in which no fusing of the metal foil occurs even if the high pressure discharge lamp is switched on for a certain time a high pressure discharge lamp is provided having a discharge vessel comprised of a light emission part and sealing parts made of glass connected to opposite ends of said light emission part; metal foils buried in a respective one of said sealing parts; a pair of electrodes comprised of core rods and tip end parts, said tip end parts being arranged oppositely to each other in the light emission part; and said core rods being melted and fused together with a respective one of the metals foils; wherein cavities are formed which reach from a surface of a respective one of the metal foils to an interior of the core rod, and the glass constituting said sealing part has entered into said cavities.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: February 14, 2012
    Assignee: Ushio Denki Kabushiki Kaisha
    Inventors: Shuki Kasaishi, Satoru Umezaki, Yoichi Mukaino
  • Patent number: 8102121
    Abstract: A single-ended ceramic discharge lamp is described which has an integral optical surface such as a parabolic or elliptical reflector. The single-ended configuration eliminates the need for the mounting structures found in double-ended lamps that can interfere with the light emitted from the lamp, particularly in focused beam applications.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: January 24, 2012
    Assignee: OSRAM SYLVANIA Inc.
    Inventors: Lori R. Brock, Arlene Hecker, Jeffrey T. Neil
  • Publication number: 20120013250
    Abstract: An ultra-high-pressure mercury lamp according to various embodiments is an ultra-high-pressure mercury lamp in which a luminous tube employing a quartz bulb is attached to a neck part of a reflector by injecting first cement, and a metal base is attached to the neck-part end of the luminous tube by injecting second cement, wherein, if a is the outer diameter of the first cement and second cement after injection, b is the total axial depth of the first cement and second cement after injection, and c is the outer diameter of the quartz bulb in the vicinity of the luminous tube where the metal base is attached, the following relationships are satisfied: 1.3<a/c<2.4; 0.5<b/c<1.6.
    Type: Application
    Filed: July 15, 2011
    Publication date: January 19, 2012
    Applicant: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG
    Inventors: Hidehiro Kohno, Hideyuki Matsumoto
  • Patent number: 8093815
    Abstract: A high-pressure discharge lamp and a reflector lamp including a discharge vessel enclosing a discharge space which is provided with an ionizable filling comprising one or more halides. The discharge vessel is substantially constituted by a ceramic material having first and second end portions. Current-supply conductors issue through each end portion to respective electrodes arranged in the discharge space so as to maintain a discharge. At least one of the current-supply conductors is formed as a rod including iridium. The rod is directly sealed to the ceramic material.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: January 10, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Josephus Christiaan Maria Hendricx, Peter Jozef Vrugt, Franciscus Johannes Gerardus Hakkens, Cornelis Johannes Maria Denissen
  • Patent number: 8053990
    Abstract: A system, in certain embodiments, includes a high intensity discharge lamp having a composite leg. The composite leg includes a plurality of leg sections coupled together in series. The plurality of leg sections includes different materials, coefficients of thermal expansion, Poisson's ratios, or elastic moduli, or a combination thereof. A method, in certain embodiments, includes enclosing a high intensity discharge within a ceramic arc envelope. The method also includes reducing thermal stresses associated with the high intensity discharge via a composite leg extending outwardly from the ceramic arc envelope. The composite leg includes a plurality of leg sections coupled together in series. The plurality of leg sections includes different materials, coefficients of thermal expansion, Poisson's ratios, or elastic moduli, or a combination thereof.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: November 8, 2011
    Assignee: General Electric Company
    Inventors: Bernard Patrick Bewlay, Bruce Alan Knudsen, Mohamed Rahmane, James Scott Vartuli, James Anthony Brewer
  • Patent number: 8004194
    Abstract: The lamp uses a sealing system with a ceramic supporting element (17) having a short length LA together with a W—Nb leadthrough part (18, 19, 20) and a specially adapted glass solder (21), which is based on an Al2O3 rare earth oxide system. In this case, the W part is accommodated in the supporting part over a length LW of 1 mm, and the aspect ratio LW/DUW, formed from the length LW and the diameter DUW of the W part, is at least 10.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: August 23, 2011
    Assignee: OSRAM Gesellschaft mit beschränkter Haftung
    Inventors: Paul Braun, Roland Hüttinger, Klaus Stockwald
  • Patent number: 7990035
    Abstract: With regard to a metal vapor discharge lamp with a triple tube structure including a discharge tube, an inner tube, and an outer tube, misalignment of axes of the inner tube and the outer tube is prevented. The metal vapor discharge lamp (14) is composed of a discharge tube (30) having a pair of electrodes therein, an inner tube (32) having a pinch-sealed part (86) at an end thereof and hermitically housing the discharge tube therein, and an outer tube (34) housing the inner tube therein, and a base (36). In a clearance between the inner tube and the outer tube, there disposed a restrain member (37) for restraining movement of the inner tube relative to the outer tube in a direction orthogonal to an axis of the metal vapor discharge lamp.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: August 2, 2011
    Assignee: Panasonic Corporation
    Inventors: Rie Tonomori, Masanori Higashi, Shunsuke Kakisaka, Kazuo Takeda
  • Patent number: 7977885
    Abstract: In certain embodiments, a lamp is provided with an arc envelope including a ceramic, an end member including a material different from the ceramic, and a compliant seal disposed between the end member and the arc envelope. The compliant seal includes a plurality of layers having different thermal expansion characteristics in an order of gradual change between the arc envelope and the end member.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: July 12, 2011
    Assignee: General Electric Company
    Inventors: Bernard Bewlay, Bruce Knudsen, Mohamed Rahmane, James Vartuli, James Brewer
  • Patent number: 7973479
    Abstract: A discharge lamp for a vehicle is provided with a ceramic luminous tube, a front side electrode and a rear side electrode held by the ceramic luminous tube, a first lead wire connected to the front side electrode, a second lead wire connected to the rear side electrode, a third lead wire having a front end portion connected to the first lead wire, an outer tube, and a socket. The ceramic luminous tube, the first lead wire, the second lead wire and the third lead wire are accommodated in the outer tube. The ceramic luminous tube includes a luminous portion and a pair of small diameter tube portions. The luminous portion is formed into a substantially cylindrical shape extending in a longitudinal direction. The third lead wire includes a horizontal portion extending in the longitudinal direction above the luminous portion.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: July 5, 2011
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Toshiaki Tsuda, Masaya Shido
  • Patent number: 7973478
    Abstract: The invention relates to an improved electrode rod (1) holder with the aid of a metal tube piece 5 and a metal plate 6 connected in a fixed manner to the metal tube piece for a mercury ultra-high pressure discharge lamp.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: July 5, 2011
    Assignee: OSRAM Gesellschaft mit beschränkter Haftung
    Inventor: Adam Kotowicz
  • Patent number: 7973462
    Abstract: A UV lamp comprises: a bulb (2) containing a mixture of an inert gas and metallic halides; at least one first electrode (4) and one second (4) electrode associated with the bulb (2); a connector (6), coupled to the bulb (2) and having two thin metal plates (12a) protruding from a portion of said connector (6). Each flat thin plate (12a) is electrically connected to an electrode (4) and is spaced apart from the other thin plate (12a) by at least 20 mm.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: July 5, 2011
    Assignee: UV4 Tan S.R.L.
    Inventor: Luca Bizzozzero
  • Patent number: 7952282
    Abstract: There is described a brazing alloy having a first component comprising a source of molybdenum and a source of aluminum and a second component comprising boron, wherein a weight ratio of said second component to said first component is not greater than 1:20. The addition of boron results a substantially lower melting point than alloys employing molybdenum and aluminum alone. It is suitable for use in discharge vessels having a hollow bodies selected from the group of monocrystalline alumina, polycrystalline alumina and aluminum nitride; metallic electrode holders fitted into ends of the hollow body; and sealed thereto by a braze.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: May 31, 2011
    Assignee: OSRAM SYLVANIA Inc.
    Inventors: George C. Wei, Yi Zheng
  • Patent number: 7952284
    Abstract: A metal halide lamp with a more stable lamp voltage, comprising a ceramic discharge vessel which encloses a discharge space, in which a first and a second electrode are arranged, which discharge vessel has a central zone extending between the electrodes and being closed at either side by a first and a second end zone, respectively, in which the first end zone surrounds, with little clearance, a current supply conductor connected to the first electrode and extending to the exterior through a seal to the wall of the first end zone, which current supply conductor has a halide-resistant section facing the discharge space and a section remote from the discharge space, wherein the halide-resistant section of the first current supply conductor comprises a wire made of tungsten or of tungsten alloyed with molybdenum.
    Type: Grant
    Filed: January 16, 2006
    Date of Patent: May 31, 2011
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Tim Van Eysendyk, Jan Margareta Peeraer
  • Patent number: 7923932
    Abstract: A high intensity arc discharge lamp having a short metal seal plug running hotter than typical of capillary seals, enables a lamp with a metal fill to achieve a vapor pressure higher than the one set by the cold spot temperature typically of a capillary seal lamp. Corrosive fill materials, such as halogens are excluded. Zinc may be used to in starting the lamp.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: April 12, 2011
    Assignee: Osram Sylvania Inc.
    Inventors: Walter P. Lapatovich, James Avallon, John Selverian
  • Patent number: 7911143
    Abstract: The invention relates to a discharge lamp, in particular a high-pressure discharge lamp, having a discharge vessel (1) which has two diametrically opposite necks (2, 3) into each of which a holding rod (5, 10) is fused at least in places, with an electrode (4, 9) which extends into the discharge vessel (1) being arranged on each holding rod (5, 10), and with in each case at least one annular plate (7, 12) at least partially clasping a holding rod (5, 10), with at least one of the annular plates (7, 12) being arranged in the discharge vessel (1).
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: March 22, 2011
    Assignee: OSRAM Gesellschaft mit beschränkter Haftung
    Inventors: Rainer Koger, Lars Menzel, Matthias Morkel
  • Patent number: 7843137
    Abstract: The inventive luminous vessel has strong bonding and improved adhesion of the current through conductor provided in the luminous container to a sealing member or the like. A luminous vessel has a luminous container, a solid current through conductor made of a metal or a cermet and a sintered body of a molded body containing at least metal powder fixed to the outside of the current through conductor.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: November 30, 2010
    Assignee: NGK Insulators, Ltd.
    Inventors: Keiichiro Watanabe, Takashi Ota, Norikazu Niimi
  • Patent number: 7825597
    Abstract: A discharge lamp has an electrode comprising a base portion having a base portion side flange portion, and a lid portion having a lid portion side flange portion. In a sealed space of the electrode, heat conductive member is enclosed. At time of lighting, the electrode is not damaged, and the discharge lamp can be stably operated. In the electrode, the diameter direction width of a welding portion of a base portion side flat portion and a lid portion side flat portion is 0.8 to 3.0. Further, an angle formed by the base portion side flat portion and a base side slope portion is 30 degrees or less and an angle formed by the lid portion side flat portion and a lid side slope portion is 30 degrees or less. The sum total of these angle is 160 degrees or less.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: November 2, 2010
    Assignee: Ushio Denki Kabushiki Kaisha
    Inventors: Tsuneo Okanuma, Yoshio Kagebayashi
  • Patent number: 7764019
    Abstract: A lamp includes an envelope of a vitreous composition, having a pinched part at least one end to form a seal isolating an interior of the envelope from the environment of the envelope, and an arrangement for conducting electrical current to the interior of the envelope, having a section embedded in one of the pinched parts of the envelope and a section external to the envelope. At least part of embedded section of the arrangement for conducting electrical current is at least partly surrounded by a composition including at least one of phosphorus in a non-volatile form and an acid thereof.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: July 27, 2010
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Oliver Boehme, Thomas Frings, Wilhelmus Johannes Jacobus Welters, Marten Willem Schuiteman, Johannes Martinus Jansen
  • Patent number: 7745999
    Abstract: The elongate bulb (1) of the lamp, which defines a longitudinal axis (A), is closed at opposite ends by sealing parts (6; 32), with in each case one cap being fitted at one end, the cap having an electrical contact element (13; 25) which is connected in an electrically conductive manner to a supply conductor (15; 21) leading to a luminous means, the contact element being accommodated in a tubular extension (11; 22) of the sealing part; the contact element (13; 25) has an attachment part (14; 24) which is directed inward toward the lamp interior and is equipped with at least two barbs (20; 26) which are in contact with the tubular extension (11; 21).
    Type: Grant
    Filed: May 19, 2007
    Date of Patent: June 29, 2010
    Assignee: OSRAM Gesellschaft mit beschraenkter Haftung
    Inventors: Jurgen Graf, Andreas Hohlfeld, Michael Hulsemann, Anton Schogl, Karen Twesten
  • Patent number: 7741779
    Abstract: A metal vapor discharge lamp and a lighting fixture are downsized without causing breakage of an outer tube because of optimization of a positional relation among the outer tube (34), an inner tube (32), and an arc tube (40). The metal vapor discharge lamp has the arc tube, the inner tube housing the arc tube, and the outer tube housing the inner tube. The positional relation satisfies the relation of 2×A+B?1.06. In a cross section of the lamp (the cross section of the arc tube is unshown for convenience), A (mm) represents the shortest distance between the arc tube and the inner tube along a line in a radial direction of the inner tube, and B (mm) represents a distance between the inner tube and the outer tube on a line segment C that is extension of the line.
    Type: Grant
    Filed: May 28, 2007
    Date of Patent: June 22, 2010
    Assignee: Panasonic Corporation
    Inventors: Kazuo Takeda, Hiroji Morimoto
  • Patent number: 7710039
    Abstract: A compact fluorescent lamp comprises a discharge tube arrangement with at least one discharge tube. The tube is formed of glass, encloses a discharge volume filled with a discharge gas and has a fluorescent phosphor coating disposed on the inner surface of the tube. The tube forms a continuous arc path and is provided with electrodes disposed at each end of the arc path. The lamp also comprises a ballast circuit connected to the electrodes by lead-in wires and to a supply voltage by lead-out wires for controlling the current in the tube. A bulb shaped outer envelope has a substantially spherical portion enclosing the tube arrangement and an elongated end portion enclosing the ballast circuit. The end portion of the outer envelope having an open end on a base side is closed and terminated by a closing means of the same material as the outer envelope. The closing means is provided with a tubular opening.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: May 4, 2010
    Assignee: General Electric Company
    Inventors: István Würsching, Ferenc Papp, József Fülöp, László Bánkuti
  • Patent number: 7710038
    Abstract: A ceramic discharge vessel is described that is provided a feedthrough comprised of a molybdenum alloy containing at least 75 weight percent molybdenum and greater than 5 weight percent of nickel and at least one other alloying metal selected from copper and iron, wherein the weight ratio of the amount of nickel to the combined amount of copper and iron, Ni:(Fe,Cu), in the alloy is in the range of 1:1 to 9:1. The thermal expansion coefficient of the alloy is sufficiently matched to that of the ceramic so that the feedthrough may be sealed to the discharge vessel without causing cracking. Preferably, the feedthrough is directly sealed to the ceramic discharge vessel without the use of an intermediate frit material.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: May 4, 2010
    Assignee: OSRAM Sylvania Inc.
    Inventor: Thomas J. Patrician
  • Patent number: 7687996
    Abstract: A compound body has a first body part (15) made of glass and a mechanical connection (20, 60) which is melted on the first body part (15) and contains aluminum.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: March 30, 2010
    Assignee: PerkinElmer Optoelectronics GmbH & Co. KG
    Inventor: Ingo Dünisch
  • Patent number: 7652429
    Abstract: This invention is about a CMH lamp arc tube seal construction where the feedthrough electrode contains a cermet in such a manner that the said cermet is either not exposed outside the ceramic capillary (which in most cases is polycrystalline alumina, PCA) or if it is exposed to the outside of the arc tube, the part that is exposed has no current carrying function. The invention provides safe ways of assembling the cermet so as to avoid breakage of the said cermet due to mechanical stresses in the electrical connections.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: January 26, 2010
    Assignee: Resat Corporation
    Inventor: Jakob Maya
  • Patent number: 7615929
    Abstract: A lamp having a ceramic arc envelope, an end structure coupled to the ceramic arc envelope and extending across an opening in the ceramic arc envelope, where the end structure comprises a passageway communicative with an interior chamber of the ceramic arc envelope is provided. The lamp further includes a molybdenum-rhenium electrode lead extending through and sealed with the passageway. The molybdenum-rhenium electrode lead includes a molybdenum-rhenium alloy. Furthermore, the lamp includes an arc electrode tip coupled to the electrode lead inside the interior chamber.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: November 10, 2009
    Assignee: General Electric Company
    Inventors: Bernard Patrick Bewlay, Bruce Alan Knudsen, Mohamed Rahmane, James Anthony Brewer, James Scott Vartuli, Istvan Csanyi, Jozsef Gabeli, Agoston Boroczki, Robert Baranyi
  • Publication number: 20090267513
    Abstract: At least on one end (6a) of a metal halogenide lamp comprising a ceramic discharge vessel, the stopper (11) homogeneously consists of an MoV alloy. The stopper is welded to the duct (9) on the outside.
    Type: Application
    Filed: November 29, 2006
    Publication date: October 29, 2009
    Applicant: OSRAM GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
    Inventor: Dieter Trypke
  • Patent number: 7602115
    Abstract: An electrode system with a current feedthrough through a ceramic discharge vessel is provided which, on one hand, increases the visible output of lamps and, on the other hand, allows smaller dimensions. For this purpose, the current feedthrough is made of rhenium or a platinum-group metal. In this way, improved color reproduction is also achievable. In preferred embodiments: (a) the current feedthrough is made of rhenium or a rhenium alloy or a platinum-group metal or a platinum-group metal alloy and the current feedthrough is brazed flush in the discharge vessel, (b) the discharge vessel has no shaft, and/or (3) the current feedthrough is in the form of one or more joined spheres.
    Type: Grant
    Filed: March 25, 2005
    Date of Patent: October 13, 2009
    Assignee: W.C. Heraeus GmbH
    Inventors: Reinhold Weiland, Harald Manhardt, David Lupton
  • Publication number: 20090243486
    Abstract: Disclosed is a discharge lamp, particularly a high-pressure xenon or mercury discharge lamp, comprising a bulb that is provided with two diametrically arranged bulb shafts, each of which supports one electrode with an electrode holding rod and an electrode head. The electrode holding rods are gas-tightly fixed in final sections of the bulb shafts by means of a sealing process. According to the invention, the bulb shafts encompass at least two knobs for supporting the electrodes, which are in contact with the electrode holding rods in at least some sections.
    Type: Application
    Filed: September 26, 2006
    Publication date: October 1, 2009
    Applicant: PATENT-TREUHAND-GESELLSCHAFT FUR elektrische Gluhlampen mbH
    Inventor: Anton Albrecht
  • Publication number: 20090218946
    Abstract: A lamp (1) has a preferably tubular container (10) consisting of at least partly transparent material and having a first opening (13) which is sealed by a metallic first seal (11) which preferably contains aluminum, wherein the surface of the first seal (11) facing the interior (17) of the container includes a convexly shaped portion (19). The first closure can be melted on the tube.
    Type: Application
    Filed: April 24, 2006
    Publication date: September 3, 2009
    Applicant: PerkinElmer Optoelectronics GmbH & Co. KG
    Inventor: Ingo Dunish
  • Patent number: 7573201
    Abstract: The invention relates to a dielectric barrier discharge lamp having outer electrodes which have ends in the form of plug connection elements.
    Type: Grant
    Filed: September 15, 2005
    Date of Patent: August 11, 2009
    Assignee: Osram Gesellschaft mit beschraenkter Haftung
    Inventors: Georg Bschorer, Hans-Gerhard Bürzele, Reinhard Lecheler, Andreas Lochschmidt
  • Patent number: 7560865
    Abstract: A discharge lamp of the short arc type having an arc tube, a hermetically sealed tube at each of opposite ends of the, a pair of electrodes which are located in the arc tube, electrode rods which support the electrodes, support parts which are each formed by part of one of the hermetically sealed tubes, optionally cylindrical retaining bodies which are each located within and welded to a respective one of the support parts and in which a respective one of the electrode rods time is held securely, and a trigger component which is located on an outer side surface of the support parts, the support parts of the respective hermetically sealed tube and/or the cylindrical retaining bodies are formed of a material that contains a metal or a metallic compound for increasing the dielectric constant. In this way, even with a great distance between the electrodes of the lamp and a high gas filling pressure, the operating properties of the lamp can be improved and it can be reliably operated at a low breakdown voltage.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: July 14, 2009
    Assignee: Ushiodenki Kabushiki Kaisha
    Inventors: Masaki Katou, Motohiro Sakai
  • Publication number: 20090160339
    Abstract: A ceramic discharge vessel is described that is provided a feedthrough comprised of a molybdenum alloy containing at least 75 weight percent molybdenum and greater than 5 weight percent of nickel and at least one other alloying metal selected from copper and iron, wherein the weight ratio of the amount of nickel to the combined amount of copper and iron, Ni:(Fe,Cu), in the alloy is in the range of 1:1 to 9:1. The thermal expansion coefficient of the alloy is sufficiently matched to that of the ceramic so that the feedthrough may be sealed to the discharge vessel without causing cracking. Preferably, the feedthrough is directly sealed to the ceramic discharge vessel without the use of an intermediate frit material.
    Type: Application
    Filed: December 21, 2007
    Publication date: June 25, 2009
    Applicant: OSRAM SYLVANIA INC.
    Inventor: Thomas J. Patrician