Prior To Assembly Patents (Class 65/55)
  • Patent number: 11339079
    Abstract: Systems for producing articles from glass tube include a converter having a base with a plurality of processing stations and a turret moveable relative to the base. The turret indexes a plurality of holders for holding the glass tubes successively through the processing stations. The systems further include a gas flow system or a suction system for producing a flow of gas through the glass tube during one or more heating, forming, separating or piercing operations. The flow of gas through the glass tube produced by the gas flow system or suction system may be sufficient to evacuate or purge volatile constituents of the glass from the glass tube and/or pierce a meniscus formed on the glass tube during separation, thereby reducing the Surface Hydrolytic Response (SHR) of the interior surface of the glass tube and articles made therefrom.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: May 24, 2022
    Assignee: CORNING INCORPORATED
    Inventors: Lewis Kirk Klingensmith, Joseph Michael Matusick, Connor Thomas O'Malley, Matthew Daniel Trosa, Steven Robert Wagner
  • Patent number: 10246366
    Abstract: Provided is a method of manufacturing an optical fiber base material by an inside mounting method, including: a step of rotating and heating a glass tube fixed at two positions and supplying a gas into a through-hole of the glass tube, wherein in the step, the glass tube is warped so that an axis between respective fixed portions of the glass tube has a shape in which a catenary curve is reversed in the vertical direction.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: April 2, 2019
    Assignee: FUJIKURA LTD.
    Inventors: Nobuo Oozeki, Kentaro Ichii, Tomofumi Arai
  • Publication number: 20150033796
    Abstract: A device and method for stamping or extruding molten glass sheet material into discrete glass parts defined by the shape of a metal or ceramic die may use force applied through one or more metal or ceramic punches to form precisely shaped glass parts. A molten glass sheet material may be positioned over the die and under the punches for processing. The molten glass material may be pushed through the die using, for example, hydraulic, pneumatic, electrical, and/or manual force to create a shearing action. The resulting glass part(s) may be subsequently moved to an annealing leer for controlled cooling while the residual sheet material may be gathered for recycling. Parts created with this method may be arranged into assemblies to combine colors for decorative effect, and reheated to unify them into a single solid piece comprised of an assembly of formerly discrete glass parts.
    Type: Application
    Filed: July 30, 2014
    Publication date: February 5, 2015
    Applicant: Oregon Mosaics Company
    Inventor: William Collins
  • Patent number: 8931307
    Abstract: On the basis of a known method for producing a blank of titanium-doped glass with a high silica content (glass) for a mirror substrate for use in EUV lithography which has a surface region that has an outer contour, is intended to be provided with a reflective coating and is specified as a highly loaded zone when the mirror substrate is used as intended, in order to provide a blank which can be produced at low cost and nevertheless meets high requirements with respect to homogeneity and freedom from blisters and striae, a procedure which comprises the following method steps is proposed: (a) producing a front body of titanium-doped high-quality glass with dimensions more than large enough to enclose the outer contour, (b) producing a cylindrical supporting body from titanium-doped glass, (c) bonding the front body and the supporting body to form a composite body, and (d) working the composite body to form the mirror substrate blank, wherein the step of producing the front body comprises a homogenizing process
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: January 13, 2015
    Assignee: Heraeus Quarzglas GmbH & Co. KG
    Inventor: Bodo Kuehn
  • Publication number: 20140065374
    Abstract: To provide laminated glass excellent in the quality and the cost, in which two glass plates differing in the plate thickness can easily be bent with good accuracy. Laminated glass 60 comprising a plurality of glass plates 12 and 14 bent into a predetermined shape, and an interlayer 40 interposed between the plurality of glass plates 12 and 14, at least two glass plates 12 and 14 among the plurality of glass plates 12 and 14 differing in the plate thickness, wherein the two glass plates 12 and 14 differing in the plate thickness have different glass compositions, and at an optional temperature between the annealing point and the softening point of the thick glass plate 12, the thick glass plate 12 has a lower viscosity than the thin glass plate 14.
    Type: Application
    Filed: October 1, 2013
    Publication date: March 6, 2014
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Masahiro TSUCHIYA, Yasumasa KATO, Yutaka KITAJIMA, Masashi KASAJIMA, Shuichi AKADA
  • Publication number: 20130000355
    Abstract: Provided is a method of manufacturing an optical filter for an illuminance sensor, which has spectral characteristics close to human luminosity characteristics, has high detection accuracy, and can be manufactured at low cost. The method includes the steps of: (a) punching a glass; (b) feeding a small piece of glass (7) having a filter effect; (c) softening the small piece of glass (7); and (d) abrading.
    Type: Application
    Filed: May 15, 2012
    Publication date: January 3, 2013
    Inventors: Sadao Oku, Hiroyuki Fujita, Koji Tsukagoshi, Keiichiro Hayashi, Hitoshi Kamamori, Hiroshi Highuchi
  • Publication number: 20130004688
    Abstract: In various embodiments, a method for producing a fluid connection between hollow glass bodies is provided. The method may include molding a joining region on each of the glass bodies; at least partially opening the joining regions; mutually positioning the glass bodies in the region of the joining regions; and joining the glass bodies.
    Type: Application
    Filed: March 8, 2011
    Publication date: January 3, 2013
    Applicant: OSRAM AG
    Inventors: Ruediger Diekmann, Andreas Engel, Klaus Lemdche, Bernd Pilhoefer, Reinhold Schmidt
  • Publication number: 20120279310
    Abstract: The pressure sensor of the invention includes at least one platform, at least one measuring membrane 30, and a transducer, wherein the measuring membrane comprises a semiconductor material, wherein the measuring membrane, enclosing a pressure chamber, is secured on the platform, wherein the measuring membrane is contactable with at least one pressure and is elastically deformable in a pressure-dependent manner, wherein the transducer provides an electrical signal dependent on deformation of the measuring membrane, wherein the platform has a membrane bed, on which the measuring membrane lies in the case of overload, in order to support the measuring membrane, wherein the membrane bed 21 has a glass layer 20, whose surface faces the measuring membrane and forms a wall of the pressure chamber, wherein the surface of the glass layer has a contour, which is suitable for supporting the measuring membrane 30 in the case of overload, characterized in that the contour of the membrane bed 21 is obtainable by a sagging
    Type: Application
    Filed: October 7, 2010
    Publication date: November 8, 2012
    Applicant: Endress + Hauser GmbH + Co. KG
    Inventors: Timo Kober, Michael Philipps, Dieter Stolze, Anh Tuan Tham, Roland Werthschutzky
  • Patent number: 8261579
    Abstract: Provided is an optically uniform and high-quality optical glass that is free from the occurrence of striae when a precision press-molding preform is produced therefrom, and that is a fluorine-containing glass having a refractive index nd(1) wherein the refractive index nd(1) and a refractive index nd(2) are substantially equivalent to each other, said refractive index nd(2) being a refractive index of the fluorine-containing glass after the fluorine-containing glass is re-melted in a nitrogen atmosphere at 900° C. for 1 hour, cooled to its glass transition temperature and then cooled to 25° C. at a temperature decrease rate of 30° C./hour.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: September 11, 2012
    Assignee: Hoya Corporation
    Inventors: Mikio Ikenishi, Xuelu Zou
  • Publication number: 20120183719
    Abstract: On the basis of a known method for producing a blank of titanium-doped glass with a high silica content (glass) for a mirror substrate for use in EUV lithography which has a surface region that has an outer contour, is intended to be provided with a reflective coating and is specified as a highly loaded zone when the mirror substrate is used as intended, in order to provide a blank which can be produced at low cost and nevertheless meets high requirements with respect to homogeneity and freedom from blisters and striae, a procedure which comprises the following method steps is proposed: (a) producing a front body of titanium-doped high-quality glass with dimensions more than large enough to enclose the outer contour, (b) producing a cylindrical supporting body from titanium-doped glass, (c) bonding the front body and the supporting body to form a composite body, and (d) working the composite body to form the mirror substrate blank, wherein the step of producing the front body comprises a homogenizing process
    Type: Application
    Filed: September 28, 2010
    Publication date: July 19, 2012
    Applicant: HERAEUS QUARZGLAS GMBH & CO. KG
    Inventor: Bodo Kuehn
  • Patent number: 8109808
    Abstract: An inner peripheral edge of a toroidal glass substrate for a magnetic disk is subjected to mechanical polishing in such a manner that the surface roughness is no greater than 9 nm in terms of Rmax. Then, the inner peripheral edge is subjected to chemical polishing to remove at least 2 ?m of a surface layer. The inner peripheral edge has a non-conventional mirror-finished surface obtained by mechanical polishing. Thus, sufficient ring strength is obtained even when the chemical polishing depth is smaller than in the past. A polishing depth of less than 5 ?m is sufficient.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: February 7, 2012
    Assignee: Toyo Kohan Co., Ltd.
    Inventors: Yoshio Uchiyama, Hiroshi Doi, Gen Ishida
  • Patent number: 7775068
    Abstract: A production method for laminated glass capable of performing a firing step for a fired substance and a bend-forming step to an inner sheet and an outer sheet in the same forming furnace when laminated glass having a fired substance between an inner sheet and an outer sheet is produced, whereby the inner sheet and the outer sheet overlap each other with high accuracy and a production device thereof, are provided. A production method for laminated glass having a fired substance between an inner sheet 2 and an outer sheet 3 wherein a firing step for firing a fired substance in a state that the inner sheet 2 and the outer sheet 3 are kept away and a bend-forming step in a state that the inner sheet 2 and the outer sheet 3 overlap each other, is carried out in the same forming furnace.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: August 17, 2010
    Assignee: Asahi Glass Company, Limited
    Inventors: Takayuki Matsuo, Daisuke Ito, Toshiharu Tanaka
  • Publication number: 20090324860
    Abstract: A method for fixing the location of a glass rod spiral (5) in a glass tube (2) for applications for the process treatment of a gas flow, wherein the glass rod spiral comprises a spiral-shaped glass tube or glass rod section (5) with a specified outside diameter (W), in which method the glass tube (2) is provided on its internal surface with at least one projection (3) not extending around its full circumference, so that a tapered section of glass tube with a specified internal width (w) is formed to be smaller than the specified outside diameter (W) of the glass tube or glass rod spiral. The projection extends in the longitudinal direction of the glass tube and has a length that is greater than the pitch of the spiral glass tube or glass rod section (5).
    Type: Application
    Filed: June 22, 2009
    Publication date: December 31, 2009
    Inventors: Markus RIEDL, Reiner BARTSCH, Franz VOELKL, Franz JAEGER, Karola SCHNEIDER
  • Patent number: 7469557
    Abstract: The column according to the present invention provides greatly increased effective length and tortuosity, per unit length of column material, by providing a smooth or textured, tight radius helical channel or channels within a silica monolith. The capillary according to the present invention is useful in enabling fully automated massively parallel analyses, syntheses, separations and concentrations at reduced costs and higher speed as well as in immobilization, filtration, and miniaturization/acceleration/automation of classical instrumentation for practicality of general deployment in environmental threat monitoring and other applications.
    Type: Grant
    Filed: June 12, 2004
    Date of Patent: December 30, 2008
    Inventors: Teresanne Griffin, Stephen E. Griffin
  • Publication number: 20070258156
    Abstract: A method for producing a shaped body (10) made of glass or glass ceramics comprises the steps of: (a) placing at least two glass blanks (12a, 12b) side by side on a shaped surface (14) of a temperature-resistant sagging mold (13); (b) sagging the glass blanks (12a, 12b) onto the shaped surface (14) by heating the sagging mold (13) and the glass blanks (12a, 12b); (c) attaching the sagged glass blanks (10a, 10b) to each other in order to form the shaped body (10); and (d) lifting the shaped body (10) from the sagging mold (13). A shaped body (10) comprises at least two glass blanks (10a, 10b) attached side by side and formed by sagging.
    Type: Application
    Filed: May 2, 2007
    Publication date: November 8, 2007
    Inventors: Hexin Wang, Kurt Becker, Lutz Autschbach
  • Patent number: 6813904
    Abstract: A process for fabricating a faceplate for a flat-panel display such as a field emission cathode type display is disclosed, the faceplate having integral spacer support structures. Also disclosed is a product made by the aforesaid process.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: November 9, 2004
    Assignee: Micron Technology, Inc.
    Inventor: Jason B. Elledge
  • Publication number: 20040194509
    Abstract: The method of manufacturing thin-walled blown glass single layer ornaments with an open spatial body consists in obtaining a raw glass shell with a closed spatial body (10), which is opened by such operations like cutting through, cutting out or cutting off along division lines (12) by means of a mechanical saw, blowpipe or laser, and thus obtained open spatial bodies (14) undergo further treatment in order for the edges to be smoothed, to be joined with other details and for the surfaces to be decorated.
    Type: Application
    Filed: December 16, 2003
    Publication date: October 7, 2004
    Inventor: Robert Mostowski
  • Publication number: 20040151848
    Abstract: A process for making a netted shell structure includes the steps of providing an elongated member made of a transparent heat-fusible material, and forming the elongated member into a plurality of ring sections which extend around an axis and which have a plurality of wavy speaks along the length of the ring sections. The ring sections are arranged in succession. The wavy peaks of each of the ring sections are welded to an adjacent one of the ring sections.
    Type: Application
    Filed: January 31, 2003
    Publication date: August 5, 2004
    Inventor: Cheng-Yuan Lin
  • Publication number: 20040050100
    Abstract: A method of producing a foamed glass composite panel is provided. Glass and 0.1-20.0% by weight of at least one non-sulfur based foaming agent are mixed together, and the mixture is heated to a temperature sufficient to foam it. The foamed mixture is cooled to form at least one foamed glass substrate. During or after the cooling step, material is bonded or attached to at least one side of the foamed glass substrate to form a composite panel.
    Type: Application
    Filed: September 16, 2002
    Publication date: March 18, 2004
    Applicant: Earthstone International, LLC
    Inventors: Andrew Ungerleider, Steven Haines
  • Publication number: 20040050104
    Abstract: A method of forming an array of optical elements for use in transmitting information includes using glass compression molding to form a plurality of discrete microlens element using a glass compression molding technique; placing each discrete microlens element in a mold cavity and aligning each microlens element in a predetermined location arranged in the form of a linear or two dimensional array; and molding by injection thermo-setting material into the cavity around each microlens element and cooling such thermo-setting material to form an integral array of optical elements that are retained in their respective locations.
    Type: Application
    Filed: September 18, 2002
    Publication date: March 18, 2004
    Applicant: Eastman Kodak Company
    Inventors: Syamal K. Ghosh, Donn B. Carlton, Darryl E. Miller
  • Patent number: 6685525
    Abstract: A method for manufacturing an inexpensive lamp, which suppresses distortion of a bulb and prevents decrease in commercial value and breakage of the bulb. In a glass bulb having one end thereof communicating with an exhaust tube, an assembly of a filament, metal foils and lead wires is disposed. In this state, the whole glass bulb is heated by a burner. The end opposite to the exhaust tube of the glass bulb is pinch-sealed to form a pinch-sealed portion. Subsequently, an expanded portion is formed by charging a protective gas from the exhaust tube into the glass bulb.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: February 3, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Kazuo Maeda
  • Patent number: 6631627
    Abstract: A process for fabricating a face plate for a flat-panel display such as a field emission cathode type display is disclosed, the face plate having integral spacer support structures. Also disclosed is a product made by the aforesaid process.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: October 14, 2003
    Assignee: Micron Technology, Inc.
    Inventor: Jason B. Elledge
  • Publication number: 20030143349
    Abstract: A method of manufacturing glass parts for connection of glass fibers is provided, which can improve the accuracy of the cross-sectional size of a through hole in the glass part. A mother glass having a similar cross section to a desired cross section of a glass part having a through hole is prepared, and the prepared mother glass is drawn while it is heated. The mother glass is made of a glass having a maximum devitrification speed of 100 &mgr;m or less per minute.
    Type: Application
    Filed: November 4, 2002
    Publication date: July 31, 2003
    Applicant: NIPPON SHEET GLASS CO., LTD.
    Inventors: Toshiaki Mizuno, Katsuya Kamisaku, Masahiro Morishita
  • Patent number: 6598426
    Abstract: A method of making a vehicle windshield or other window. An opaque layer (e.g., enamel or water-based) is applied to a glass sheet and then “fired” or cured. The opaque layer is preferably black or dark in color. Thereafter, the sheet with the opaque layer thereon is cut into a desired windshield shape, along a cutting line which extends through both the glass sheet and the opaque layer formed thereon. As a result, on the cut glass sheet the opaque layer extends all the way up to the peripheral edge thereof. In vehicle windshield embodiments, the cut sheet is laminated to another glass sheet via at least a polymer based interlayer in order to form the vehicle windshield.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: July 29, 2003
    Assignee: Guardian Industries Corp.
    Inventors: Robert Vandal, John Bradford
  • Patent number: 6564586
    Abstract: A process for fabricating a face plate for a flat panel display such as a field emission cathode type display is disclosed, the face plate having integral spacer support structures. Also disclosed is a product made by the aforesaid process.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: May 20, 2003
    Assignee: Micron Technology, Inc.
    Inventor: Jason B. Elledge
  • Patent number: 6510709
    Abstract: Disclosed are a shaping mold for producing an optical fiber guide block which permits highly accurate positioning and fixing of optical fibers, an optical fiber guide block having such excellent properties, processes for the production of these, and an optical fiber array.
    Type: Grant
    Filed: July 7, 1999
    Date of Patent: January 28, 2003
    Assignee: Hoya Corporation
    Inventors: Teruo Yamashita, Kaoru Kagami, You Ohgami
  • Patent number: 6393869
    Abstract: A process for fabricating a face plate for a flat panel display such as a field emission cathode type display, the face plate having integral spacer support structures is disclosed. Also disclosed is a product made by the aforesaid process. The support structures are designed to be load bearing so as to prevent implosion of a planar, transparent face plate toward a parallel spaced-apart base plate when the space between the face plate and the base plate is sealed at the edges of the display to form a chamber, and the chamber is evacuated in the presence of atmospheric pressure outside the chamber. Unlike most spacer support structures proposed for such flat panel displays, the support structures are made from the same material as the substrate from which the face plate is fabricated. For a preferred embodiment of the process, a perforated laminar template is sealably sandwiched between a laminar silicate glass substrate and a manifold block to form a temporary sandwich assembly.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: May 28, 2002
    Assignee: Micron Technology, Inc.
    Inventor: Jason B. Elledge
  • Patent number: 6279348
    Abstract: A process for fabricating a face plate for a flat panel display such as a field emission cathode type display, the face plate having integral spacer support structures is disclosed. Also disclosed is a product made by the aforesaid process. The support structures are designed to be load bearing so as to prevent implosion of a planar, transparent face plate toward a parallel spaced-apart base plate when the space between the face plate and the base plate is sealed at the edges of the display to form a chamber, and the chamber is evacuated in the presence of atmospheric pressure outside the chamber. Unlike most spacer support structures proposed for such flat panel displays, the support structures are made from the same material as the substrate from which the face plate is fabricated. For a preferred embodiment of the process, a perforated laminar template is sealably sandwiched between a laminar silicate glass substrate and a manifold block to form a temporary sandwich assembly.
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: August 28, 2001
    Assignee: Micron Technology, Inc.
    Inventor: Jason B. Elledge
  • Patent number: 6216492
    Abstract: A preferred embodiment of the present invention comprises a vitreous quartz pipe or container having a connector including a flange formed from at least one strip or rod-shaped piece of transparent quartz glass which is wound circumferentially around either an inner or outer surface of a portion of the pipe or container and secured to the pipe or container to thereby form a closed-ring flange. The portion of the pipe or container having the attached flange may be an open end of the pipe or container or may be a wall portion where a connector for mounting to fixtures or other fittings may be desired. This type of strip or rod-shaped piece of quartz glass can be made via a conventional pulling technique such that a strip or rod having the appropriate uniform cross-sectional shape is obtained. The prepared strips or rod-shaped pieces are then easily cut with a saw device to appropriate lengths.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: April 17, 2001
    Assignees: Heraeus Quarzglas GmbH, Shin-Etsu Quartz Products, Co., Ltd.
    Inventors: Poul E. Breidenbach, Heinz Herzog, Helmut Leber, Jurgen Pottker
  • Patent number: 6101846
    Abstract: A process for fabricating a face plate for a flat panel display such as a field emission cathode type display, the face plate having integral spacer support structures is disclosed. Also disclosed is a product made by the aforesaid process. The support structures are designed to be load bearing so as to prevent implosion of a planar, transparent face plate toward a parallel spaced-apart base plate when the space between the face plate and the base plate is sealed at the edges of the display to form a chamber, and the chamber is evacuated in the presence of atmospheric pressure outside the chamber. Unlike most spacer support structures proposed for such flat panel displays, the support structures are made from the same material as the substrate from which the face plate is fabricated. For a preferred embodiment of the process, a perforated laminar template is sealably sandwiched between a laminar silicate glass substrate and a manifold block to form a temporary sandwich assembly.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: August 15, 2000
    Assignee: Micron Technology, Inc.
    Inventor: Jason B. Elledge
  • Patent number: 5979187
    Abstract: In a method of forming a glass to metal seal between one end of a glass lamp tube (for, for example, a flash lamp or laser lamp), a metal rod which is terminated by the electrode is heated, and has molten glass sealing material applied thereto to form a beaded sleeve. The tube to which the electrode is to be attached is heated, and further sealing material is applied to the end of the tube so as to create a dome of material which closes off that end. Excess sealing material is then removed from the dome so as to leave an annulus of sealing material around the end wall of the, now open, tube. The electrode and rod can then be inserted into the tube until the bead on the rod is near the annulus at the end of the tube, and the tube can be worked, while being rotated, down to form a frusto-conical end such that movement of the bead relative to the annulus then brings the two into contact while a positive gas pressure is maintained within the tube.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: November 9, 1999
    Inventors: Martin Ross Churchley, Janusz Karol Lewandowski
  • Patent number: 5903097
    Abstract: A method of manufacturing a side glass for a vacuum fluorescent display is provided wherein a glass is cut to a predetermined length in accordance with the size of the vacuum fluorescent display. The glass is then bent to coincide two ends of the glass in accordance with the shape of the vacuum fluorescent display, and the two ends of the glass are adhered to one another. A sealing frit is applied on the upper side of the glass, and is plasticized and cured.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: May 11, 1999
    Assignee: Samsung Display Devices Co., Ltd.
    Inventor: Yong-kyu Lee
  • Patent number: 5858051
    Abstract: A method of manufacturing an optical waveguide comprises a first step of laminating, on one major surface of a first glass material, a second glass material to a desired thickness, the second glass material having optical characteristics different from those of the first glass material, a second step of forming the second glass material to have a desired circuit pattern, and a third step of laminating a third glass material having optical characteristics similar to those of the first glass material on an entire surface of the first glass material on which the circuit pattern is formed by the second glass material. In at least one of the first and third steps, the glass material to be laminated is laminated by coupling.
    Type: Grant
    Filed: May 8, 1996
    Date of Patent: January 12, 1999
    Assignee: Toshiba Machine Co., Ltd.
    Inventors: Yoshizo Komiyama, Isao Matsuzuki, Kazunori Urushibata, Toshihisa Kamano, Tetsuya Tanioka, Hirotaka Masaki
  • Patent number: 5858046
    Abstract: The present invention is directed to a method for forming glass articles containing internal enclosed channels.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: January 12, 1999
    Assignee: Corning Incorporated
    Inventors: Stephen R. Allen, James G. Anderson, Albert M. Gossie
  • Patent number: 5658363
    Abstract: A method of manufacturing a preform for drawing into an optical fibre comprises positioning a rod within a sleeving tube therefor to form an assembly in which there is an annular space between the rod and tube, and collapsing the tube onto the rod to form a solid cross-section preform. The collapsing step comprises sealingly closing the annular space at one end of the assembly and applying suction to the annular space from the other end of the assembly. The annular space at the one end is sealingly closed by locating the end of the tube at the one end on an annular rib of the rod and fusing the tube end to the rib.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: August 19, 1997
    Assignee: Pirelli General PLC
    Inventors: Peter Robert Ince, Graham Frederick Wood, Peter Charles Sampson
  • Patent number: 5639288
    Abstract: A method to provide a glass tube with an internal glass spiral being formed from a straight glass rod and fastened to the internal wall of the glass tube by merging the glass rod with the glass wall in the line of contact between the glass wall and the spiral wherein the glass rod is conducted into the glass tube through a guiding tube placed inside the glass tube at a velocity v.sub.1 relative to the guiding tube, the guiding tube being provided with a heating zone at its front end inside the glass tube, the glass rod being heated to its softening point in the heating zone before leaving the guiding tube through a mouth piece, at the same time the glass tube and/or the guiding tube being rotated at a frequency n, and the glass tube being moved at a velocity v.sub.2 relative to the guiding tube.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: June 17, 1997
    Assignee: Haldor Topsoe A/S
    Inventor: Peter Schoubye
  • Patent number: 5324373
    Abstract: The subject of this invention is a method of making a curved glass pane of laminated glass, such as an automobile windshield, in which one of the two single glass sheets is provided, on the surface bearing against an intermediate layer, with a film of a baking finish. The baking finish is applied onto the inner face of the single glass sheet intended for the outside. The glass sheet, provided with the dried baking finish (i.e., a colored film), is laid, with the film upwards, onto the single glass sheet intended for the inside. The pair of glass sheets, in this arrangement, is prebent on a bending frame with simultaneous baking-in of the colored film. Subsequently, the two glass sheets are transposed and, in this transposed arrangement with the colored film on the inside, are finally bent in a second bending operation on a bending frame corresponding to the final shape of the outer sheet.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: June 28, 1994
    Assignee: Saint-Gobain Vitrage International
    Inventors: Manfred Gillner, Hubert Havenith, Luc Vanaschen
  • Patent number: 5316564
    Abstract: The invention provides a method of preparing a light-weight base body of a reflecting mirror such as a mirror in a reflecting astronomical telescope, which is very stable not only thermally but also mechanically and is highly resistant against adverse environmental influences. The mirror base is composed of a porous foamed disc body of fused quartz glass or high-silica glass sandwiched by two plates of fused quartz glass or high-silica glass, of which one is made from transparent glass and serves to provide an optical surface having flatness or a specified curvature, and the side surface of the porous foamed disc body is protected against environmental influences by providing an air-tight sealing layer formed from a silicone rubber-based sealing agent or a thin sheet of fused quartz glass or high-silica glass.
    Type: Grant
    Filed: October 30, 1991
    Date of Patent: May 31, 1994
    Assignees: Shin-Etsu Quartz Co., Ltd., Okamoto Optics Work, Inc.
    Inventors: Tatsumasa Nakamura, Yoshiaki Ise, Yoshiaki Okamoto
  • Patent number: 5225252
    Abstract: A glass vacuum flask coating method comprising a step to put a metal material in the gap between an inner flask and an outer flask before said inner and outer flasks being formed into a blank for a glass vacuum flask, after the process of exhausting and tipping-off said metal material being heated by a magnetic field generated from an inductance coil into a metal vapor inside said gap, permitting said metal vapor to be adhered to the glass surface inside said gap, forming into a metal reflecting film thereon.
    Type: Grant
    Filed: January 23, 1992
    Date of Patent: July 6, 1993
    Inventors: Ming-Wen Chang, Yu-Cheng Chuang
  • Patent number: 5133682
    Abstract: A method of fabricating an arc discharge capsule from a tubular blank, and a mold used in such fabrication, is provided wherein a first electode is sealed in a first press seal in one end of the blank, and a preform designed to facilitate insertion and positioning of a second electrode is formed in an opposite end of the blank, in a single pressing and blowing step.
    Type: Grant
    Filed: November 2, 1990
    Date of Patent: July 28, 1992
    Assignee: GTE Products Corporation
    Inventors: Thomas J. Gilligan, George J. English, Harold L. Hough
  • Patent number: 5106403
    Abstract: A method of producing a blank for the primary member of a glass mould in which an organic polymer, multifocal, ophthalmic lens is cast. A glass major element is formed that has a raised countersink zone on one surface, the remainder of the glass major element being thinner than the countersink zone, but of such thickness that it can form the far vision surface of a mould. A countersink is formed in the countersink zone and a segment element is formed and fused in the countersink. This forms a lens mould assembly which, when ground and polished to the predetermined far vision curvature and countersink size, produces a mould in which an organic lens may be cast.
    Type: Grant
    Filed: March 22, 1991
    Date of Patent: April 21, 1992
    Assignee: Corning Incorporated
    Inventor: Milford L. Buckley
  • Patent number: 4997467
    Abstract: A hollow glass lamp base is molded with a sidewall having a tapered, truncated dimple in it. The inner end of the dimple is knocked out, after the base has been annealed, to provide an opening so that the electric cord can extend out through the sidewall of the glass base. The need for an attached metal base and a connecting center tube is obviated.
    Type: Grant
    Filed: April 26, 1990
    Date of Patent: March 5, 1991
    Assignee: Anchor Hocking Corporation
    Inventors: Paul H. Olshanski, Jerome Hazenstab
  • Patent number: 4846746
    Abstract: A method of manufacturing stems for vacuum tubes is disclosed. The method makes it possible, in particular, to improve the quality of the seal between the metallic bushings and the glass of the stem. The method consists in loading a bottom mold with a first glass piece and a second glass piece and metallic conductors, and then in heating the glass pieces before pressing them against each other between the bottom mold and the top mold. According to one characteristic of the invention, the first piece, which constitutes an external piece partially fixed in the bottom mold, is directly heated only on an upper part which is not fixed, and the two glass pieces are pressed against each other as soon as the upper part has reached a so-called working temperature in order to prevent prolonged contact between the upper part and a limited surface of the conductors.
    Type: Grant
    Filed: November 25, 1987
    Date of Patent: July 11, 1989
    Assignee: Videocolor
    Inventor: Alain Prost
  • Patent number: 4842635
    Abstract: A method of manufacturing a low-pressure mercury vapor discharge lamp with a discharge vessel comprising two or more substantially parallel co-extending glass discharge tube portions (4 and 5) interconnected through a coupling which extend transversely to the wall of said tube portions. First, the inner wall of an elongate tube is provided with a luminescent material. Then, while heating at least a short zone of the wall, the elongate tube is then divided into two portions. End walls are formed during the division on which the luminescent layer extends the thickness of the tube wall and the temperature of the heated zone are chosen so that no particles of the luminescent material are enclosed in the glass of the end wall during said dividing process and fracture is avoided at least after cooling.At least at the area of the transition from the end wall to the tube wall, the ratio AB/CD is 0.4 to 0.8.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: June 27, 1989
    Assignee: U.S. Philips Corporation
    Inventors: Antonius J. Spaapen, Cornelis J. van den Broek
  • Patent number: 4786303
    Abstract: The method of this invention comprises first forming an assembly of a number N of cored glass fibers, separated by a number M of solid glass fibers. After a row of such alternated cored and solid glass fibers is assembled, a uniform pressure is applied to all sides of the assembly. All of the rectangular glass fibers are selected to have the same thermal properties, characterized especially by having the same softening temperature and the same coefficient of expansion. The entire assembly is inserted in an oven subject to a temperature sufficient to soften the glass and thus fuse the parts together. The assembly is cooled and the glass block is removed from the oven. The block can then be cut into thin nozzle wafers and finished to produce the desired jet nozzles. The method may use glass fibers made of two types of glass. The central portion of the fiber comprises a high-temperature glass, this portion surrounding the core.
    Type: Grant
    Filed: April 13, 1987
    Date of Patent: November 22, 1988
    Assignees: Ricoh Company, Ltd., Ricoh Systems, Inc.
    Inventor: Marco Padalino
  • Patent number: 4778504
    Abstract: Method for bonding the edges of all-glass multiple panes, particularly all-glass double panes, whereby the individual panes moving through an elongated tunnel furnace or the like are cut to size, may potentially be washed, are subjected to an at least partial edge smoothing, are aligned with one another and, after being pre-heated to a pre-heating temperature lying below the deformation temperature of the glass, are bonded to one another at the horizontal and vertical pane edges, being bonded while standing upright, characterized in that individual panes cut to size and potentially washed are individually pre-heated lying on their surface facing away from the pane interspace of the all-glass multiple pane to be manufactured, and in that the individual panes are subsequently placed upright and are placed together to form groups of individual panes in accord with an all-glass multiple pane to be manufactured, whereupon the edge bonding ensues; further, apparatus for the implementation thereof.
    Type: Grant
    Filed: July 30, 1987
    Date of Patent: October 18, 1988
    Assignee: Flachglas Aktiengesellschaft
    Inventor: Josef Kulla
  • Patent number: 4725298
    Abstract: A low pressure mercury vapor discharge lamp forms an electric discharge path by the use of a bulb placed on an end plate and the bulb is formed by a process which results in the connecting outer side surfaces of juxtaposed glass tubes through communication holes formed in the outer side surfaces respectively. The process involves placing the juxtaposed glass tubes so that their outer surfaces are opposed in a contacting state. A portion of each of the glass tubes is heated in order to form a communication hole through the utilization of a burner inserted through an open end into the interior of each of the glass tubes in order to cause fusion of that particular portion in each tube to thereby form the communication hole by wind pressure.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: February 16, 1988
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takao Takeda, Hitoshi Yamazaki, Yoshiteru Taniguchi, Norihiko Tanaka, Hiroshi Ito, Minoru Uchida, Jun Imai
  • Patent number: 4723092
    Abstract: To improve the high-voltage flash-over resistance by increasing the lead aration of the lamps, the pinch or press seal is, while the lamp is being made and the lamp tubing is in plastically deformable condition, extended at least is the region adjacent the end of the later formed pinch seal by introducing spreader jaws, either parallel or, at least eventually, in acutely angled relation to each other into the softened end portion, and then spreading apart the jaws so that, at the outer end portions of the jaws, the plastically deformable region will assume an oval shape whose longer dimension is wider than the outer diameter of the tubing in the region which will later from the discharge vessel.
    Type: Grant
    Filed: October 6, 1986
    Date of Patent: February 2, 1988
    Assignee: Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH
    Inventors: Jurgen Heider, Jurgen Vom Scheidt, Ewald Wurster, Alexander Dobrusskin
  • Patent number: 4718932
    Abstract: This specification teaches a method of manufacturing a curved windshield with an electrically conductive film thereon. The method includes the steps of placing an electrically conductive film, an oxidizable metal layer, and an oxidized metal layer in layered relationship on a flat glass sheet. A glass templet is cut from the coated sheet and electric bus bars are applied and dried on the electrically conductive film on the coated glass templet. A glass templet is cut from an uncoated glass sheet and the two so-formed templets are united with the coating of the one sheet exposed to the ambient. The glass sheets are heated and bent into curved configuration. Thereafter, a laminating interlayer is placed between the glass templets and the glass templets are laminated together.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: January 12, 1988
    Assignee: Ford Motor Company
    Inventor: Eugene P. Pharms
  • Patent number: RE33297
    Abstract: This specification teaches a method for making an electrically heatable windshield of laminated construction. In the method, a pair of glass templets are cut (10) and they include a long glass templet and a short glass templet. The templets are separated (20) from one another. An opaque ceramic paint is applied (30) to an edge portion of a coatable surface of a selected glass templet and is dried (40) thereon. Bus bars are also applied (50) to and dried (60) on the coatable surface of the long glass templet. The glass templets are united (70) and subjected to a bending operation (80) to form a shaped windshield pair. The long glass templet and short glass templet are separated (90). A transparent electrically conductive coating is applied (100) between the bus bars located on the selected glass templet.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: August 14, 1990
    Assignee: Ford Motor Company
    Inventors: Kevin J. Ramus, John D. Youngs