With Annealing Means Patents (Class 65/175)
  • Patent number: 10421622
    Abstract: According to one embodiment, a floating conveyor is configured to convey a substrate while floating the substrate. The floating conveyor includes a lower floating section and an upper floating section with a conveying path of the substrate therebetween. A plurality of floating blocks that constitute at least one of the lower floating section and the upper floating section are arranged to be separated by a space, and a floating block that constitutes the other is arranged to face the space.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: September 24, 2019
    Inventors: Yuichi Imaoka, Akinori Iso
  • Publication number: 20120291493
    Abstract: A consecutive molding method for crystallized glass comprises: a process to obtain molten glass by melting glass raw materials; a process to obtain a band-shaped plate glass by roll forming the molten glass; a crystallization process to obtain a band-shaped crystallized glass plate by conducting thermal treatment on the band-shaped plate glass to crystallize it; and a process to cut the band-shaped crystallized glass plate, wherein the crystallization process includes: a process to form crystal nuclei in the band-shaped plate glass by disposing it in the atmosphere of a crystal nucleus-formation temperature and retaining it at the temperature; a process to raise the temperature of the band-shaped plate glass with crystal nuclei to a crystal-growth temperature; a process to retain the band-shaped plate glass with crystal nuclei at the crystal-growth temperature to produce a band-shaped crystallized glass plate; and a process to slowly cool down the band-shaped crystallized glass plate.
    Type: Application
    Filed: March 9, 2012
    Publication date: November 22, 2012
    Applicants: Ta Hsiang Containers Ind. Co., Ltd., a Taiwan Corporation, Huzhou Ta Hsiang Glass Products Co., Ltd., a China Corporation
    Inventors: Kuo-Chuan Hsu, Yan-Bin Jiang, Chao Qu
  • Publication number: 20120090357
    Abstract: After a glass film ribbon (3) is formed while allowing a glass to descend, the glass film ribbon (3) is annealed while allowing the glass film ribbon (3) to descend in an annealer (5) to remove an internal strain. Then, when the glass film ribbon (3) having a thickness at a center portion excluding both widthwise ends of 300 ?m or less is cut, after processing in the annealer (5) is executed and before a cutting step is executed, main tensile rollers (6R) that play a role as principal tensile rollers hold the descending glass film ribbon (3) and are driven to rotate, to thereby provide at least the glass film ribbon (3) in the annealer (5) with tension in a vertical direction.
    Type: Application
    Filed: October 17, 2011
    Publication date: April 19, 2012
    Inventors: Takahide NAKAMURA, Katsutoshi Fujiwara, Michiharu Eta
  • Patent number: 8104385
    Abstract: The brittle workpiece splitting system 1 includes a substrate holding mechanism 10 for holding a substrate 51, and a processing unit 5 for splitting the substrate 51 held by the substrate holding mechanism 10 by a splitting process. The substrate holding mechanism 10 has an edge damper 12 adapted to clamp an edge part of the substrate 51 from the sides of the opposite surfaces of the edge part, and support members 19 for supporting the substrate 51 thereon at a predetermined height. The support members 19 are disposed on the side opposite the side of the edge damper 12 with respect to the intended split line 61 parallel to the edge part of the substrate 51. The edge damper 12 has an edge holder 15 on which the substrate 51 is seated, and a pressure bar 14 for pressing the substrate 51 against the edge holder 15 to hold the substrate 51 between the edge holder 15 and the pressure bar 14.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: January 31, 2012
    Assignees: Shibaura Mechatronics Corporation, Kabushiki Kaisha Toshiba
    Inventors: Masakazu Hayashi, Shinji Nakata, Susumu Yahagi
  • Publication number: 20100281920
    Abstract: Provided is a process for producing a glass sheet including a forming step of down-drawing a molten glass into a sheet-like glass ribbon, in which the molten glass is fed to a forming trough arranged in a forming furnace and the molten glass is caused to flow down from the forming trough through a conveyance passage extending vertically; an annealing step of removing an internal strain in the glass ribbon in an annealing furnace; a cooling step of cooling the glass ribbon to around room temperature in a cooling chamber; and a cutting step of cutting the glass ribbon in a given size, in which the cooling chamber is provided with a gas exhausting passage, thereby exhausting air in the cooling chamber to an outside.
    Type: Application
    Filed: December 10, 2008
    Publication date: November 11, 2010
    Inventors: Noritomo Nishiura, Koki Ueda, Hidetaka Oda, Tomonori Kano, Daisuke Nagata
  • Patent number: 6634186
    Abstract: A U-shaped groove is formed in a glass sheet along a cutting line and the sheet is cut by breaking along the groove. The groove is formed by heating a sheet portion including the cutting line by a laser beam, cooling it to lower its density, and etching that portion to dissolve it. Every surface exposed by cutting the sheet has a pair of edges which are properly beveled and rounded.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: October 21, 2003
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventor: Koichi Abe
  • Patent number: 6220056
    Abstract: For handling thin panes of glass or similar work pieces and products in conveyance systems, machining installations, and the like, by means of pneumatic forces, a device is proposed that is characterized by two plates (1, 2) with flat surfaces on at least one side, arranged parallel to each other at a distance (D) sufficient to hold the pane of glass (3) without contact, where the plates (1, 2) have a multitude of gas passages (4), and all the gas passages (4) of a plate (1, 2) can each be connected to a gas delivery device through one or more ducts, etc. to generate an excess pressure or a vacuum, and where at least some of the gas passages (4) are arranged in pairs opposite each other.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: April 24, 2001
    Assignee: Schott Glaswerke
    Inventor: Heinrich Ostendarp
  • Patent number: 6032488
    Abstract: The invention is used to manufacture an inhomogeneous medium whose porosity and permeability undergo rapid transitions from one point to another of its volume, by juxtaposing different materials without creating a barrier. Such a transition is made by juxtaposing a first material and a second material with a different porosity to the first. One of them can be a rock sample such as sandstone for example, the other can be a composite material obtained by agglomerating pyrex powder for example, the whole being heated according to a specific temperature cycle up to a temperature (TR) lower than the melting point of the two materials but sufficient to achieve partial melting of one of the materials at the interface with the other material, but without formation of a continuous or discontinuous capillary barrier between them, or an interzone with preferred passage for fluids. Thus, different composite materials can be juxtaposed to constitute the inhomogeneous medium.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: March 7, 2000
    Assignee: Institut Francais du Petrole
    Inventors: Christian Deruyter, Jean-Claude Moulu, Francois Kalaydjian
  • Patent number: 5985779
    Abstract: Disclosed is a quartz glass product of enhanced opacity manufactured by fusion of silica particles, the opacity being enhanced by the reaction of an organosilicon additive in the course of the fusion process. A method of enhancing the opacity of a quart glass product by fusing silica particles in the presence of an organosilicon additive is also disclosed.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: November 16, 1999
    Assignee: TSL Group PLC
    Inventors: Ian George Sayce, Peter John Wells
  • Patent number: 5942376
    Abstract: Solution films of a photosensitive metal arylketone alcoholate are micro-patterned by exposure to ultraviolet radiation under a mask. The resultant patterns are developed in an apolar solvent and annealed to provide thin film metal oxides for use in integrated circuits.
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: August 24, 1999
    Assignees: Symetrix Corporation, Mitsubishi Materials Corporation
    Inventors: Hiroto Uchida, Nobuyuki Soyama, Kensuke Kageyama, Katsumi Ogi, Michael C. Scott, Larry D. McMillan, Carlos A. Paz de Araujo
  • Patent number: 5840465
    Abstract: A composition for the formation of barrier ribs of a plasma display panel and a method for the formation of the barrier ribs are disclosed. The formation of barrier ribs is effected by applying either a composition comprising (A) a low-melting glass having a working point of not more than 560.degree. C.
    Type: Grant
    Filed: October 13, 1995
    Date of Patent: November 24, 1998
    Assignee: Taiyo Ink Manufacturing Co., Ltd.
    Inventors: Masahisa Kakinuma, Osamu Kawana, Katsuto Murata
  • Patent number: 5792417
    Abstract: In-situ formation of glass-ceramic composites by the Self-propagating High temperature Synthesis (SHS) technique. The reagents used are: TiO.sub.2, B.sub.2 O, Al, Ti, B and MO where MO represents BaO, MgO, CaO and other similar oxides. BaCO.sub.3 may be substituted for BaO. The composition of the reaction products can be adjusted by adjusting the ratios of the reagents. All reagents are in powder form and the reaction can be carried out either in inert atmosphere inside a reaction chamber or in air without a chamber. The materials produced have crystalline TiB.sub.2 particles in a glassy matrix (aluminoborate glass). The TiB.sub.2 particles have a size of about 0.5 .mu.m. Advantages include processing simplicity and cost savings. The glass-ceramic composites produced are electrically conductive and find application where high strength, hardness and electrical conductivity are required.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: August 11, 1998
    Assignee: Cuigne International Ltd
    Inventors: Hu Chun Yi, Jacques Y. Guigne, John J. Moore
  • Patent number: 5772714
    Abstract: A process for producing opaque silica glass in which a quartz raw material grain having a particle size of 10 to 350 .mu.m is filled into a heat resistant mold, the quartz raw material grain is heated in a non-oxidizing atmosphere from a room temperature up to a temperature lower by 50.degree. to 150.degree. C. than a temperature at which the above raw material grain is melted at a temperature-increase speed not exceeding 50.degree. C./minute, then, slowly heated up to a temperature higher by 10.degree. to 80.degree. C. than the temperature at which the quartz raw material grain is melted at the speed of 10.degree. C./minute or less, and the heated quartz raw material grain is further maintained at the temperature higher by 10.degree. to 80.degree. C. than the temperature at which the quartz raw material grain is melted, followed by cooling down to the room temperature.
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: June 30, 1998
    Assignee: Shin-Etsu Quartz Products Co., Ltd.
    Inventors: Tatsuhiro Sato, Akira Fujinoki, Kyoichi Inaki, Nobumasa Yoshida, Tohru Yokota
  • Patent number: 5696038
    Abstract: Oscillation/rotation patterns for improving the off-axis homogeneity of fused silica boules are provided. The patterns reduce the optical effects of periodic off-axis striae by decreasing the ratio of .DELTA.n.sub.striae to .DELTA.z.sub.striae, where .DELTA.n.sub.striae is the average peak-to-valley magnitude of the striae and .DELTA.z.sub.striae is their average peak-to-peak period. The oscillation/rotation patterns have long repeat periods and cause soot-producing burners to trace out substantially spiral-shaped patterns on the surface of the boule.
    Type: Grant
    Filed: September 11, 1996
    Date of Patent: December 9, 1997
    Assignee: Corning Incorporated
    Inventor: John E. Maxon
  • Patent number: 5683481
    Abstract: An alumina ceramic article and a method for preparing the article. The method comprises the steps of:(1) Compacting a mixture of a first concentration of particulate aluminum oxide sufficient to prevent retention of the zirconium oxide alloy particles in the shell in a predominantly tetragonal crystal structure and a second concentration of particulate zirconium oxide alloy. The zirconium oxide alloy is zirconium oxide and a secondary oxide selected from the group consisting of MgO, CaO, Y.sub.2 O.sub.3, Sc.sub.2 O.sub.3, CeO.sub.2, and rare earth oxides having a concentration of secondary oxide generally of about 0.5 to about 5 mole percent Y.sub.2 O.sub.3, from about 0.1 to about 1 mole percent MgO, from about 0.5 to about 15 mole percent CeO.sub.2, from about 0.5 to about 7.0 mole percent Sc.sub.2 O.sub.3, or from about 0.5 to about 5 mole percent CaO, relative to the total of the zirconium oxide alloy. The compacting results in the formation of a blank.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: November 4, 1997
    Assignee: Eastman Kodak Company
    Inventors: Dilip K. Chatterjee, Syamal K. Ghosh, Gregory S. Jarrold
  • Patent number: 5676720
    Abstract: A glass material is formed from SiO.sub.2, CaO, Na.sub.2 O and P.sub.2 O.sub.5 and the porous, non-crystalline structure is most preferably created by melting the constituents, cooling and pulverizing the resulting glass, and then forming and hot pressing the powder. The glass of the present invention may be formed to produce templates that are useful for various indications, as well as granules that may be formed into a paste.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: October 14, 1997
    Assignee: The Trustees of the University of Pennsylvania
    Inventors: Paul Ducheyne, Ahmed El-Ghannam, Irving Shapiro
  • Patent number: 5668067
    Abstract: The invention relates to the production of high purity fused silica glass which is highly resistant to optical damage by ultraviolet radiation in the laser wavelength of about 300 nm or shorter. In particular, this invention relates to a fused silica optical member or blank which exhibits substantially no optical damage up to 10.sup.7 pulses (350 mJ/cm.sup.2) at the KrF laser wavelength region of about 248 nm, and at the ArF laser wavelength region of about 193 nm.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: September 16, 1997
    Assignee: Corning Incorporated
    Inventors: Roger J. Araujo, Nicholas F. Borrelli, Christine L. Hoaglin, Charlene Smith
  • Patent number: 5649987
    Abstract: A process for producing tabular building and decorative materials similar to natural stone and having high strength for the facing of facades, walls and floors in interior and exterior applications from thermally treated mixtures of crushed glass, ceramic components and finely divided additives and materials produced by the process.
    Type: Grant
    Filed: May 2, 1995
    Date of Patent: July 22, 1997
    Assignee: Schott Glaswerke
    Inventor: Norbert Greulich
  • Patent number: 5641333
    Abstract: A method for forming a GeO.sub.2 -doped SiO.sub.2 glass article by depositing glass particles to form a porous preform and then drying and sintering the porous preform. A precursor of SnO.sub.2 is also present in the reactant stream used to form the particles, whereby the reaction produces particles of glass that contain GeO.sub.2, SiO.sub.2 and SnO.sub.2. The presence of SnO.sub.2 in the particles reduces the reaction of GeO.sub.2 with chlorine to form GeCl.sub.4 during the drying step. The GeCl.sub.4 that would have formed would have either escaped from the porous preform or caused GeO.sub.2 to be re-deposited in an undesirable portion of the preform. The retention of GeO.sub.2 in the article is therefore enhanced.
    Type: Grant
    Filed: December 1, 1995
    Date of Patent: June 24, 1997
    Assignee: Corning Incorporated
    Inventors: Gerald E. Burke, Carlton M. Truesdale
  • Patent number: 5547482
    Abstract: This invention is directed to the production of essentially defect-free high purity fused silica glass articles, the method comprising the following steps: (a) forming a green body from silica particulates or a porous body of amorphous silica; (b) sintering said body in a chamber by raising the temperature of the chamber to above 1720.degree. C., while purging the chamber with helium or applying a vacuum to the chamber; and (c) consolidating the sintered body in a chamber by raising the temperature within the chamber to at least 1750.degree. C., introducing an inert gas into the chamber at a pressure less than about 6.9 MPa (1000 psig), and cooling the chamber while maintaining the pressurized atmosphere to a temperature at least below the annealing point of the glass. In the most preferred practice, a green body of silica particulates will be prepared via a sol-gel process.
    Type: Grant
    Filed: July 5, 1994
    Date of Patent: August 20, 1996
    Inventors: Julie B. Chalk, Jonathan C. Rowe, Paul M. Schermerhorn, Robert D. Shoup
  • Patent number: 5364430
    Abstract: Low attenuation, low dispersion of optical waveguides are provided by a process initiating with axial deposition of a high velocity-core soot stream impinging on a target at a high angle of incidence relative to the axis of rotation of the target. A core cylinder is built up axially by relative movement between the soot stream and target during deposition, the movement being non-constant in order to maintain a substantially constant diameter with a constant deposition rate. A cladding layer is then built up by deposition of soot radially on the core. Subsequent drying and sintering provides a vitreous preform which may be drawn directly into optical waveguides. Alternatively, the sintered product may be drawn down to smaller rods, which then are covered with further deposited soot cladding to a desired final thickness, and after further drying and sintering may be drawn to optical waveguides.
    Type: Grant
    Filed: January 8, 1993
    Date of Patent: November 15, 1994
    Assignee: Cal-Optics, Inc.
    Inventor: Arnab Sarkar
  • Patent number: 5356447
    Abstract: Incidence of breakage in optical fiber drawn from sol-gel produced preforms is reduced by treatment of the still-porous glass by use of a chlorine-containing, oxygen-free gas mixture. Improved satisfaction of proof-rest requirements to at least 100 kpsi is assured by size reduction of unassimilated discrete particles in the fiber.
    Type: Grant
    Filed: March 11, 1993
    Date of Patent: October 18, 1994
    Assignee: AT&T Bell Laboratories
    Inventor: Suhas D. Bhandarkar
  • Patent number: 5344475
    Abstract: Optical fiber drawn from preforms including sol-gel-derived glass is found to contain small refractory particles of the order of a micron in size. These particles initiate fiber breaks with the result that fiber may not meet proof-test tensile strength requirements. An effective separation method relies upon density and/or size difference from suspended sol particles for separation in the ungelled sol. A preferred separation procedure is centrifugation.
    Type: Grant
    Filed: March 11, 1993
    Date of Patent: September 6, 1994
    Assignee: AT&T Bell Laboratories
    Inventors: Suhas D. Bhandarkar, Harish C. Chandan, David W. Johnson, Jr., John B. MacChesney
  • Patent number: 4203028
    Abstract: The disclosed apparatus has a spark gap at which optical fibers are to be exposed to spark erosion treatment. The spark gap receives electrical energy from a spark-impulse transformer with the secondary winding of which it is connected by means of a length of coaxial charging cable. A firing circuit has its output connected with the primary winding of the transformer and its input connected with a control circuit which includes a multi-vibrator that can be adjusted as to its pulse-repetition frequency.
    Type: Grant
    Filed: January 12, 1978
    Date of Patent: May 13, 1980
    Assignee: Felten & Guilleaume Carlswerk AG
    Inventor: Joachim Brumann
  • Patent number: 4039309
    Abstract: The present invention relates to a method and apparatus for breaking optical fibers. The present method comprises the steps of: clamping an optical fiber at two spaced-apart peripheral areas on opposite sides of the area of intended break; heating the area of the intended break to at least the annealing temperature of the fiber; scoring the fiber along the line of intended break; and either bending and pulling or pulling the fiber apart to produce a break with a flat end surface. The heating step may also be advantageously employed to melt or evaporate a jacket surrounding the optical fiber adjacent to the area of intended break.
    Type: Grant
    Filed: July 28, 1976
    Date of Patent: August 2, 1977
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Andres Albanese, Louis Maggi