Incandescent Lamp Type Patents (Class 313/557)
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Patent number: 8853932Abstract: Techniques described herein generally relate to methods of manufacturing devices and devices including a filament having therein or coated with a catalyst and carbon nanotubes. The device may be configured to produce light with a luminary characteristic having a value higher than a value of the luminary characteristic of a device having an uncoated filament at a same operating condition. The luminary characteristic may include one or more of device irradiance or light efficiency. The filament may be a tungsten filament, and the carbon nanotubes may include multiwall carbon nanotubes or single wall carbon nanotubes. The filament may be coated with the carbon nanotubes using one or more deposition techniques including electric arc discharge, laser ablation and chemical vapor deposition (CVD). The filament may be coated with the catalyst using a method including one or more of electroless plating, electroplating, dip coating, spin coating, and radio frequency (RF) sputtering.Type: GrantFiled: January 31, 2011Date of Patent: October 7, 2014Assignee: Indian Institute of Technology KanpurInventors: Kamal Krishna Kar, Raghunandan Sharma, Ariful Rahman, Sanjay Agarwal
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Publication number: 20110241520Abstract: In various embodiments, a halogen incandescent lamp is provided. The halogen incandescent lamp may include a bulb, in which a light-emitting element is fixed by means of a frame, the bulb defining an axis, the frame having a frame wire and a separate part for holding the light-emitting element, wherein the separate part is a clip which is fastened on the frame wire, the clip having a functional limb, with the end of said functional limb being threaded or plugged into a coiled end of the light-emitting element.Type: ApplicationFiled: March 28, 2011Publication date: October 6, 2011Applicant: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNGInventors: Albert Fieger, Thomas Heil, Heinz Lang, Georg Rosenbauer, Roland Stark
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Patent number: 6956328Abstract: A tungsten halogen lamp (10) includes a light transmissive envelope (12), which encloses a tungsten filament (14) and a gaseous fill comprising an inert gas and a halogen-containing gas, such as an alkyl halide. In addition the fill includes a silicon-containing compound capable of gettering oxygen within the envelope. The atomic ratio of silicon to halogen in the envelope is selected so as to remove most, but not all of the oxygen present in the envelope A silicon:halogen ratio of less than about 0.5 more preferably, below about 0.4 has been found to be effective in this respect.Type: GrantFiled: September 18, 2003Date of Patent: October 18, 2005Assignee: General Electric CompanyInventors: Thomas H. Yu, Shailesh R. Sheth, Gino Savarino, Bart P. Terburg
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Patent number: 6583559Abstract: A getter comprising a calcium-aluminum compound including about 39% to about 43% calcium by weight produces a calcium vapor when sufficiently heated. The calcium vapor can condense to form a calcium film on an inside surface of a sealed evacuated enclosure such as a CRT to getter reactive species from the enclosed volume. The calcium-aluminum compound, preferably CaAl2 powder, can be mixed with either nickel powder, titanium powder, or both.Type: GrantFiled: June 22, 2000Date of Patent: June 24, 2003Assignee: SAES Getter S.p.A.Inventors: Corrado Carretti, Luca Toia, Claudio Boffito
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Publication number: 20020190644Abstract: In a discharge lamp comprising a discharge vessel surrounded by an outer bulb filled with nitrogen, a hydrogen getter is used comprising more than 80% by weight of Zr and Co and one or more elements chosen from the rare earth elements. The getter effectively removes hydrogen from the outer bulb and is not poisoned by nitrogen.Type: ApplicationFiled: April 30, 2002Publication date: December 19, 2002Inventor: Bennie Josephus De Maagt
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Patent number: 6472818Abstract: Providing a light bulb having a long life by preventing filament coil breakage. A glass bulb (1) has a sealing portion (4) at one end thereof and contains a filament coil (5). The filament coil (5) is suspended between lead-in wires (7, 8) extended externally of the sealing portion (4), with its opposite ends connected to respective one ends of the wires. The lead-in wires (7, 8) are supported by a stem (6) disposed between the sealing portion (4) and the filament coil (5). A getter (9) is disposed between the sealing portion (4) and the stem (6).Type: GrantFiled: July 13, 2000Date of Patent: October 29, 2002Assignee: Matsushita Electronics CorporationInventors: Taku Ikeda, Kazuo Maeda
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Publication number: 20020101158Abstract: The present invention has a lamp/getter assembly which reduces or eliminates mechanical and chemical wearing of the filament/leads in a lamp. One or more getters are formed across the filaments of the lead wires of a lamp during construction. During the cooking and sealing off process, the mechanical integrity of the lead wire/filament geometry is maintained by the effect of the getter structure. After the sealing process, the lamp is operated at lower than operating voltage and the getters operate to remove impurities. When the lamp is then operated at normal voltage and temperature, the getter melts and breaks.Type: ApplicationFiled: November 7, 2001Publication date: August 1, 2002Inventors: Murli Theegala, Holger Claus
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Patent number: 6278234Abstract: An image-forming apparatus comprises an electron source and an image-forming member disposed in an envelope. The image-forming member includes a fluorescent film and a metal back covering the fluorescent film. The metal back contains a gettering substance and the gettering substance is irradiated with electron beams emitted from the electron source.Type: GrantFiled: April 29, 1999Date of Patent: August 21, 2001Assignee: Canon Kabushiki KaishaInventors: Takeo Ono, Yasue Sato
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Patent number: 5428262Abstract: An electric incandescent lamp includes a metal getter strip secured to a filament. The getter strip has a closed circumferential bounding edge which defines a closed aperture through which the filament extends and an integral retaining portion biased against said filament for retaining the bounding edge between a pair of coil turns. In a favorable embodiment, the strip has opposing portions each with a respective closed aperture through which the filament extends. Tail portions bent against the filament bias the opposing bounding edge of the apertures between respective turns to secure the getter to the filament. The side edges of the getter are spaced from the lamp envelope to avoid blackening of the inner wall adjacent the getter strip.Type: GrantFiled: July 19, 1993Date of Patent: June 27, 1995Assignee: Philips Electronics North America CorporationInventor: Robert L. Geier
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Patent number: 5128106Abstract: An oxygen detector for use in a double envelope lamp is described. The detector may be formed by nitriding a metal surface to produce a metal piece with a first visual color or state. The surface thickness is sufficient to exclude oxygen during normal assemble, but thin enough to change colors during lamp operation if oxygen is present.Type: GrantFiled: July 12, 1990Date of Patent: July 7, 1992Assignee: GTE Products CorporationInventors: Jeffrey P. Buschmann, Arnold E. Westlund, Jr.
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Patent number: 4923424Abstract: This invention relates to incandescent lamps and more particularly to the gettering of such lamps. In accordance with the present invention, there is provided an incandescent lamp comprising an envelope, a tungsten filament mounted within the envelope, a fill gas, and a getter comprising phosphorus and a borane compound and/or partially halogenated derivatives thereof. In accordance with another aspect of the present invention, there is provided a method of gettering an incandescent lamp. The method comprises providing the above-described getter in an unsealed lamp envelope; sealing the lamp envelope; and activating the getter located within the sealed envelope.Type: GrantFiled: August 8, 1989Date of Patent: May 8, 1990Assignee: GTE Products CorporationInventor: John W. Shaffer
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Patent number: 4894584Abstract: The electric lamp has a getter capable of binding hydrogen, oxygen and stoichiometrically water at a comparatively low temperature. The getter comprises Pd as a first metal, chemically bound to a second metal from the group Zr and Y, the mol. % of the first metal in the getter lying between 0.4 and 15. The getter further comprises chemically bound oxygen, mole 0/mole second metal being 0.02-1.0. The particle size is .ltoreq.40 .mu.m.Type: GrantFiled: May 10, 1988Date of Patent: January 16, 1990Assignee: U.S. Philips CorporationInventors: Maarten W. Steinmann, Wilhelmus A. A. A. Martens, Johannes J. G. S. A. Willems
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Patent number: 4857804Abstract: A tungsten-halogen lamp achieves long life in any burning orientation by the inclusion within the lamp of copper, which reduces filament sag and filament corrosion.Type: GrantFiled: March 31, 1986Date of Patent: August 15, 1989Assignee: GTE Products CorporationInventor: Robert M. Griffin
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Patent number: 4727286Abstract: Electric incandescent lamp employing phosphine (PH.sub.3) as the getter.Type: GrantFiled: November 16, 1981Date of Patent: February 23, 1988Assignee: GTE Products CorporationInventors: James P. Keenan, Peter R. Gagnon
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Patent number: 4550270Abstract: This invention provides a tungsten-halogen lamp having a thin-wire filament and a hydrogen-impervious envelope. Containment of hydrogen within the lamp envelope suppresses tungsten corrosion of the filament and prevents early termination of the lamp. In the preferred embodiment, an aluminosilicate glass is employed as the hydrogen-impervious envelope material. This invention overcomes a substantial impediment in the development of a feasible tungsten-halogen lamp as a replacement for the standard Edison-type lamp for general lighting purposes.Type: GrantFiled: May 2, 1983Date of Patent: October 29, 1985Assignee: GTE Products CorporationInventors: Stephen F. Kimball, Emery G. Audesse, Robert M. Griffin
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Patent number: 4451760Abstract: Life expectancy, through reduction of filament sag and halogen corrosion of tungsten filaments, is greatly increased for tungsten-halogen lamps by including within the filament environment a quantity of copper. The copper can be present as one of the lead-in wires; a plating on the lead-in wires; a separate copper insert; or a coating on the filament. It is believed the copper acts as an oxygen getter.Type: GrantFiled: April 28, 1982Date of Patent: May 29, 1984Assignee: GTE Products CorporationInventors: Robert M. Griffin, Roy C. Martin
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Patent number: 4450381Abstract: A tungsten-halogen incandescent lamp has a hermetically sealed light-transmitting envelope with a fill of inert gas and halogen, a tungsten filament and a preferential tungsten deposition site of palladium material within the envelope.Type: GrantFiled: April 5, 1982Date of Patent: May 22, 1984Assignee: GTE Products CorporationInventors: George B. Kendrick, George L. Duggan, Carlos Ochoa
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Patent number: 4449070Abstract: A tungsten-halogen lamp employs a slidable getter which automatically positions itself in the lowest, and thus, coolest, portion of the envelope where it is most efficient. This feature allows such lamps to be burned in a horizontal or vertical mode; the vertical mode including both base down and base up positioning.Type: GrantFiled: April 28, 1982Date of Patent: May 15, 1984Assignee: GTE Products CorporationInventors: John W. Shaffer, Gary L. Houseknecht
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Patent number: 4430599Abstract: A tungsten-halogen lamp employs a quantity of loose copper particles within the envelope to function as an oxygen getter. The loose particles allow the copper to be positioned in the lowest, and thus coolest, part of the lamp whereby the lamp can be burned in any orientation.Type: GrantFiled: April 28, 1982Date of Patent: February 7, 1984Assignee: GTE Products CorporationInventor: Carl F. Kackenmeister