Patents Examined by James Derrington
  • Patent number: 6578384
    Abstract: An arrangement in the loading end of a multi-section glass bending furnace, where the glass sheets travel along a special rail from one furnace section to the next section in mould carriages (8) moving in cycles on the said rail. For unloading and loading the mould with the bent glass (10) resting on it is shifted in mould carriage (8) from the rail over to side station (7), while the carriage keeps moving forward on the rail. There is in or will be removed to said rail from the side station one or more moulds earlier brought from the rail. In the side station the first transmitter (5) is to take the mould out of the mould and the second transmitter (6) is there to take the mould to the carriage and both transmitters are operating with the furnace section.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: June 17, 2003
    Assignee: Glassrobots Oy
    Inventor: Esko Peltonen
  • Patent number: 6579404
    Abstract: A method of making precision geometry honeycomb material formed of a composite material and exhibiting dimensional uniformity, is disclosed. Composite material is molded in the cavity of a single-sided female mold to form a first web with a plurality of honeycomb cell portions of the desired cell shape in the web. The details of the cavity mold configuration are captured to form the honeycomb cell portions in the composite material during molding the web by applying pressure to the composite material in the mold with an elastomeric pressure intensifier. The composite material of the web is stabilized as by curing. First and second molded webs are precisely aligned in a fixture and joined together at facing cell nodes thereof by bonding yielding a honeycomb material with superior geometric platform.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: June 17, 2003
    Assignee: Northrop Grumman Corporation
    Inventors: Richard A. Lewis, Richard C. Yocky, Michael Rivera
  • Patent number: 6574994
    Abstract: A method for manufacturing optical fiber preform and fiber. According to the method, a core cane segment is formed with a refractive index delta preferably between 0.2% and 3% that is most preferably formed by an OVD method. A sleeve is formed including at least one down-doped moat preferably having a refractive index delta between −0.1% and −1.2% and at least one up-doped ring preferably having a refractive index delta between 0.1% and 1.2%. The sleeve is formed by introducing glass precursor and dopant compounds into a cavity of a preferably silica glass tube (e.g., one of an MCVD and PCVD method). The core cane segment is inserted into the sleeve and the sleeve is collapsed onto the core cane segment to form a core-sleeve assembly. The core-sleeve assembly is again drawn into a cane and additional cladding is preferably formed thereon. Optical fiber may be drawn from the preform in a conventional draw apparatus.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: June 10, 2003
    Assignee: Corning Incorporated
    Inventors: Michael B. Cain, Liam R. dePaor, Robert B. Desorcie, Richard M. Fiacco, Cynthia B. Giroux
  • Patent number: 6571800
    Abstract: A tobacco filling device includes a base with an outlet defined in a first end thereof and a cover is pivotally connected to a second end of the base. A pushing member is movably engaged with a slot defined in a top surface of the base. A plurality of pawls are connected to a top surface of the pushing member and each pawls has an end extending upward and away from the outlet. A knob is connected to the pushing member.
    Type: Grant
    Filed: March 25, 2002
    Date of Patent: June 3, 2003
    Inventor: Chin-Tung Yu
  • Patent number: 6571582
    Abstract: The use of silica powders having large particle sizes in making sol-gel silica bodies has been found to have important advantages. Among these are higher gel strength, higher silica loading, more rapid aging and drying of the gel, a reduction in the amount of organic additives leading to reduced process time required for organic burn-off, and easier removal of contaminant particles due to their larger size. It was also discovered that spherical particle morphology contributes to the improved properties.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: June 3, 2003
    Assignee: Fitel USA Corp.
    Inventors: Suhas Bhandarkar, Yoram De Hazan, John Burnette MacChesney, Thomas Edward Stockert
  • Patent number: 6568216
    Abstract: A method for manufacturing a discharge tube, including heating a quartz tube by irradiation and closing it shut, is presented, in which variation of the heating temperature of the quartz tube can be reduced. Laser light is irradiated on a portion of the quartz tube, and in the step of sealing the portion of the quartz tube onto which laser light has been irradiated, the laser light is scanned while oscillating back and forth. The intensity of the laser light is controlled such that the intensity of the laser light when the size of a displacement of the laser light is maximal is smaller than the intensity of the laser light when the size of the displacement of the laser light is minimal.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: May 27, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takeshi Meguro, Masaji Sakamoto, Kenji Hirai, Motomi Sakoda
  • Patent number: 6568217
    Abstract: A method for manufacturing a fluorescent lamp that can achieve stable luminous characteristics and discharge characteristics and also does not suffer from cracks in the interconnected portion of the glass tubes while handling or lighting the fluorescent lamp is provided. Interconnecting portions located in the vicinity of open end portions of glass tubes that are positioned adjacent to each other are heated respectively from inside to form a welding portion, and then, the glass tubes are thrust against each other and thinned by conducting a preliminary tapping of the welding portion from inside using hammers. Next, the welding portion is opened by conducting a main tapping to form an interconnected portion, and end portions in the vicinity of the interconnected portion are closed by heating and melting, and then the end portions are molded.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: May 27, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazuyoshi Sudou, Masahiro Takeuchi, Kazumasa Koyabashi
  • Patent number: 6562284
    Abstract: This invention relates to a method of producing a honeycomb ceramic body exhibiting a predetermined radial dimension comprising producing a green ceramic honeycomb body that exhibits a radial dimension at least 9% greater than the predetermined radial dimension and a cell density of at least 500 cpsi. The method further involves shrinking the green body during firing to form a sintered honeycomb ceramic body exhibiting the final predetermined radial dimension. This invention also relates to a method of producing a ceramic body comprising the following steps: (a) compounding and plasticizing a ceramic raw material mixture and forming the plasticizable raw material mixture into a green ceramic body by extrusion through an extrusion die; (b) drying the green body and thereafter firing the green body at a time and at a temperature sufficient to sinter the ceramic body resulting in a radial shrinkage of the green ceramic body in the radial dimension due to the firing of at least 9%.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: May 13, 2003
    Assignee: Corning Incorporated
    Inventors: Douglas M. Beall, Gregory A. Merkel, Brian E. Stutts
  • Patent number: 6560994
    Abstract: Disclosed is a mold including upper and lower molds for obtaining glass optical elements by press molding a glass molding material softened by heat, in which either one of the upper and lower molds is made of a ceramic matrix and the matrix has no surface hole having a diameter of 300 microns or more on the molding surface, and a method for manufacturing glass optical elements using the mold. For example, on the upper mold 21 and the lower mold 22, formed is a &bgr; type silicon carbide having a thickness that a molding surface can be reproduced by grinding and a density of 3.20 g/cm3 or more so as to include at least the molding surface facing a surface of the glass molding material G. The mold according to the invention can be reused even where pullouts occur from repetitive use.
    Type: Grant
    Filed: July 17, 1998
    Date of Patent: May 13, 2003
    Assignee: Hoya Corporation
    Inventor: Shinichiro Hirota
  • Patent number: 6563093
    Abstract: A ceramic pin heating element having exterior heating conductors and integrated electrical connection surfaces, and method for making same. A first body is injection molded from a first injection-moldable ceramic composite compound having a first electrical resistance, and a second body is injection-molded from a second injection-moldable ceramic composite compound having a second electrical resistance about the first body so as to form a compound body. The compound body is then sintered. The resulting ceramic pin heating element is directly formed without additional steps for protecting (insulating) the element so as to prevent the exterior, complementary heating conductors from contacting the housing and/or terminal bolts. The danger of breakage of the pins at the mounting location and/or at the seal seat through variations in the thickness of contact and/or insulation coatings is minimized.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: May 13, 2003
    Assignee: Robert Bosch GmbH
    Inventors: Gert Lindemann, Wilfried Aichele, Friederike Lindner
  • Patent number: 6558611
    Abstract: A method for producing ceramic bodies, particularly ceramic foils, from a castable slip made of a dispersion of a ceramic powder in a solvent. A dispersion of an aqueous vinyl-acetate homopolymer or an aqueous vinyl-acetate/ethene copolymer being used as the solvent.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: May 6, 2003
    Assignee: Firma Kerafol Keramische Folien GmbH
    Inventors: Thomas Betz, Thomas Frey, Anette Haubenreich, Franz Koppe
  • Patent number: 6559103
    Abstract: A process is provided for preparing solid superconducting mixed-metal oxides whereby the superconductor can be formed into any predetermined shape by way of viscous sol precursors. The superconductors are also formed by this process into homogeneous phases.
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: May 6, 2003
    Assignee: The Boeing Company
    Inventors: Brad Lee Kirkwood, Thomas S. Luhman, Ronald Roy Stephenson, Michael Strasik
  • Patent number: 6553789
    Abstract: A method produces homogenous quartz glass plates without streaks. The method is applied to starting quartz glass body which has an X—X geometrical axis and good refractive index homogeneity in its central area, and a refractive index homogeneity decreasing as the axis lies further from a central area. The body is divided into at least two concave parts by longitudinal cuts parallel to the axis once the central area has been processed out of the body. The parts are placed separately in corresponding molds and heated therein such that they are molded to form quartz glass plates having a desired thickness.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: April 29, 2003
    Assignee: Schott Glass
    Inventors: Rolf Martin, Andreas Menzel, Frank Coriand, Wolfgang Schmidt
  • Patent number: 6550282
    Abstract: A method for manufacturing an optical fiber (100) having low PMD, comprises the steps of: a) heating at least one end portion (3a) of a preform (3); b) drawing an optical fiber (100) from a free end of said heated end portion (3a) along a fiber drawing axis (I—I); c) coating said optical fiber (100) with a suitable coating material; d) applying to said coated optical fiber (100) a torque about said fiber drawing axis (I—I), e) winding said coated optical fiber (100) onto a collecting spool (9). According to the invention, step d) is carried out by means of a pulley (16) supported upstream of said collecting spool (9) and rotated about the fiber drawing axis (I—I), said optical fiber (100) being wound up onto said pulley (16) for an angle of at least about 360°. Advantageously, such method also allows to notably increase the amount of optical fiber produced per unit of time with respect to the prior art.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: April 22, 2003
    Assignee: Pirelli Cavi e Sistemi S.P.A.
    Inventors: Giacomo Stefano Roba, Roberto Pata
  • Patent number: 6544467
    Abstract: A method of manufacturing a ceramic body and a gas sensor is disclosed. The method comprises mixing a ceramic material and an organometallic material with a solvent to form a mixture. The organometallic material comprises both a metallic component and an organic ligand. The mixture is disposed onto a surface, dried, and removed to form the ceramic body. The sensor is made by disposing the ceramic body adjacent to an unfired electrolyte body having an electrode disposed on each side thereof to form a green sensor. The green sensor is co-fired to form the sensor.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: April 8, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: Walter T. Symons, Kaius K. Polikarpus, Kerry J. Gross
  • Patent number: 6536241
    Abstract: At least two machines placed side by side, including a series of centrifuging wheels arranged in a cascaded manner and driven in rotation about axes all having substantially in a same direction. Two consecutive wheels rotate in opposite directions, and are simultaneously fed with material to be fiberized. The material is poured onto the first wheel, is accelerated, and is conveyed onto the second wheel, and then optionally onto following wheels, in order to be converted into fibers by centrifugal ejection, the fibers being picked up by a gas stream and collected by a gathering device. The main axes of two adjacent machines are positioned along a non-zero angle adjusted in order for two gas streams emitted by the two adjacent machines to meet and combine. Such machines may find application in the manufacture of products based on mineral fibers.
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: March 25, 2003
    Assignee: Isover Saint-Gobain
    Inventors: Valerie Dupouy, Alain Debouzie
  • Patent number: 6536236
    Abstract: A method of producing a polarizing glass article that exhibits a broad band of high contrast polarizing properties in the infrared region of the radiation spectrum. The polarizing glass is phase-separated or exhibits photochromic properties based on silver, copper, or copper-cadmium halide crystals or a combination thereof, which are precipitated in the glass and having a size in the range of 200-5000 Å. The glass has a surface layer containing elongated silver, copper, or copper cadmium metal particles, or a mixture thereof. The method comprises subjecting the glass article to a time-temperature cycle in which the temperature is at least about 76° C. or greater above the glass softening point, in a step to thermally form and precipitate large halide crystals, and elongated metallic particles under a stress of not over about 3000 psi, preferably not over about 2675 psi.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: March 25, 2003
    Assignee: Corning, Incorporated
    Inventors: David G. Grossman, Lisa R. Vandegrift, Joseph M. Williams, George N. Whitbred, III
  • Patent number: 6532771
    Abstract: Glass is produced in a glassmelting furnace by combusting fuel and oxidant having an oxygen content greater than 80 vol. % oxygen in a melting zone to form molten glass, wherein the surface of the molten glass is exposed to the gaseous atmosphere in the melting zone and the water vapor content of the atmosphere at the surface of the molten glass is greater than 35 vol. %, and oxidant having an oxygen content greater than 80 vol. % is injected into the refining zone of the furnace under conditions to minimize mixing of said oxidant with gases above said oxidant and sweep water vapor at the surface of the molten glass into the melting zone to lower the water vapor content of the atmosphere at the surface of the molten glass.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: March 18, 2003
    Assignee: Praxair Technology, Inc.
    Inventors: Hisashi Kobayashi, William Joseph Snyder, Kuang Tsai Wu
  • Patent number: 6526782
    Abstract: This invention pertains to apparatus and process for making core/clad glass fibers. The apparatus includes a central tube or receptacle connected at the top to a pressure controller and terminating in a reduced section; a side tube or receptacle positioned at about the level of the upper portion of the central tube; an outer tube or receptacle disposed around the bottom portion of the central tube terminating in a smaller section which is concentric with and spaced directly below the section of the central tube; a side arm connecting the side tube and the outer tube; and furnaces around the side, outer, and the reduced sections of the central and the outer tubes.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: March 4, 2003
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Reza Mossadegh, Brian Cole, Pablo Pureza, Jasbinder Sanghera, Shyam Bayya, Ishwar Aggarwal
  • Patent number: 6519976
    Abstract: A composition for production of silica glass using a sol-gel process is described, comprising silica particles, a dispersing agent, and a solution containing a polymerizable monomer for formation of acrylic resin and a crosslink agent dissolved in distilled water. The polymerizable monomer is n-methylol acrylamide or n-methylol methacrylamide. A method for production of silica glass is described, including the step of adding silica particles and a dispersing agent to a premix solution of the polymerizable monomer for formation of acrylic resin and the crosslink agent dissolved in distilled water.
    Type: Grant
    Filed: April 24, 2002
    Date of Patent: February 18, 2003
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jeong-Hyun Oh