Corning Incorporated

Corning Glass Works

Randy Lee Rhoads

Glen Bennett Cook

Thierry Luc Alain Dannoux

Steven Roy Burdette

Vladislav Yuryevich Golyatin

Josef C Lapp

Frank Thomas Coppola

Butchi Reddy Vaddi

David Alan Tammaro

Peter L Bocko

Steven Michael Milillo

Victoria Ann Edwards

Gautam Meda

David Chen

Adam Charles Berkey

Vladislav Y Golyatin

Gunilla E Gillberg

Daniel Warren Hawtof

Allan Mark Fredholm

Douglas Clippinger Allan

Andrey V Filippov

Elias Panides

Gaozhu Peng

Chunfeng Zhou

Lewis Kirk Klingensmith

Shawn Rachelle Markham

Robert D Shoup

Olus Naili Boratav

John David Helfinstine

John Joseph Costello, Iii

Ahdi El Kahlout

Hilary Tony Godard

Joseph W Malmendier

Robert J Schlaufman

Terry Jay Ott

Jiandong Meng

Douglas Edward McElheny

G Clinton Shay

Eliot Geathers

Leonard R Kent

John T Fisk

Matthew Scott Weibel

Philip M Fenn

Dennis I Butts

Yuriy Yurkovskyy

Carol F Pride

John A Adamowicz

Glenn B Cook

David A Tammaro

A method for making a glass ribbon that includes: flowing a glass into a caster having a width (W) from about 100 mm to about 5 m and a thickness (t) from about 1 mm to about 500 mm to form an a cast glass; cooling the cast glass in the caster to a viscosity of at least 10Poise; conveying the cast glass from the caster; drawing the cast glass, the drawing comprising heating the cast glass to an average viscosity of less than 10Poise and drawing the cast glass into a glass ribbon having a width (W) that is less than W; and thereafter cooling the glass ribbon to ambient temperature. Further, the cast glass during the cooling, conveying and drawing steps is about 50° C. or higher.

Glass articles

A glass tube manufacturing apparatus for manufacturing glass tubing includes a glass delivery tank with molten glass. The glass delivery tank has a bottom opening. A bell has an upper portion with an outer diameter located at the bottom opening. A heating apparatus is at least partially disposed around the bell. The heating apparatus includes a heated portion and a muffle portion located below the heated portion. A lower extended muffle structure extends downwardly from the muffle portion. The lower extended muffle structure extending about the glass tubing on all sides to manage convective airflow therethrough.

Method and apparatus for controlling glass tube taper

A method for making a glass ribbon that includes: flowing a glass into a caster having a width (W) from about 100 mm to about 5 m and a thickness (t) from about 1 mm to about 500 mm to form an a cast glass; cooling the cast glass in the caster to a viscosity of at least 10Poise; conveying the cast glass from the caster; drawing the cast glass, the drawing comprising heating the cast glass to an average viscosity of less than 10Poise and drawing the cast glass into a glass ribbon having a width (W) that is less than W; and thereafter cooling the glass ribbon to ambient temperature. Further, the cast glass during the cooling, conveying and drawing steps is about 50&#xb0; C. or higher.

Continuous methods of making glass ribbon and as-drawn glass articles from the same

A bell positioning apparatus for glass tubing manufacturing includes a bell and a support connected to the bell. A bell positioning apparatus is attached to the support and configured to move the support and the bell with at least three degrees of freedom. The bell positioning apparatus includes a platform, a platform frame, and one or more frame legs. A frame leg dimensional stability apparatus maintains a temperature variation within 6.5&#xb0; C. per meter of distance between each frame leg for an extended period of time, e.g. 4 hours.

Thermally stable glass tubing forming apparatuses

An apparatus for making a glass sheet using overflow fusion down-draw process comprising an inlet assembly having an elliptic cylindrical section coupled to a transition section which is, in turn, coupled to an open end of an open channel of an isopipe, and an overflow fusion down-draw process for making glass sheet. The glass melt flow has a high surface velocity profile conducive to the formation of a glass ribbon over the surface of the weirs and the wedge side surfaces with the desired mass distribution.

Overflow down-draw with improved glass melt velocity and thickness distribution

A method of sintering large refractory ceramic articles is disclosed. The method includes supporting a green refractory body on a plurality of support plates, the support plates in turn being supported by a plurality of support members having arcuate upper and lower surfaces. A setter material is disposed between the green refractory body to be sintered and the support plates. As the refractory body is sintered, the density of the article increases. Concurrently, the dimensions of the body decrease, which shrinkage, unless otherwise accommodated, may cause fracture of the body. The support plates and the structure of the support members, move to prevent the development of detrimental stresses in the refractory body as it sinters.

Large refractory article and method for making

Methods for controlling thickness variations across the width of a glass ribbon () are provided. The methods employ a set of thermal elements () for locally controlling the temperature of the ribbon (). The operating values for the thermal elements () are selected using an iterative procedure in which thickness variations measured during a given iteration are employed in a mathematical procedure which selects the operating values for the next iteration. In practice, the method can bring thickness variations of glass sheets within commercial specifications in just a few iterations, e.g., 2-4 iterations.

Methods for controlling glass sheet thickness

Methods of drawing glass sheet via a downdraw process are provided. In certain aspects, the methods utilize rapid cooling below the root () of the forming apparatus (). Such rapid cooling can, for example, facilitate the use of glass having a liquidus viscosity less than about 100,000 poise. In other aspects, the methods utilize slow cooling between the viscosities of 10poises and 10poises. Such slow cooling can facilitate the production of glass substrates which exhibit low levels of compaction. In further aspects, substrates are removed from the glass sheet at elevated temperatures which can facilitate increases in the production rates of downdraw machines. In still further aspects, rapid cooling below the root, slow cooling between the viscosities of 10poises and 10poises, and/or substrate removal at elevated temperatures are combined. Such combinations can facilitate economically effective utilization of downdraw equipment.

Method of making a glass sheet using controlled cooling

A laminated sheet includes a surface layer having an optical surface that is of fire-polished quality and a core layer having a higher modulus than the surface layer to increase an overall stiffness or fracture toughness of the laminated sheet.

High-strength laminated sheet for optical applications

A pull roll assembly is described herein that is used to draw a glass sheet. The pull roll assembly includes a first roll assembly, a second roll assembly and a device (e.g., differential drive, sensor(s)). The device enables one to control the first and/or second roll assemblies based in part on pulling forces (e.g., glass contact normal force and/or required sheet pulling force) associated with a glass sheet while the glass sheet is being drawn between the first and second roll assemblies. A glass manufacturing system and method for using the pull roll assembly are also described herein.

Pull roll assembly for drawing a glass sheet

A molten glass delivery system for use in producing sheet glass by a fusion process is provided. The delivery system includes a first conduit () which surrounds a portion of a second conduit () with a free surface () of molten glass () being formed between the two conduits. The first () and second () conduits are positioned with respect to one another so that the spatial relationship between the exit end () of the second conduit () and the free surface () results in neither substantial numbers of devitrification defects () nor substantial numbers of blister defects () in finished sheets of devitrification sensitive glass, e.g., high silica LCD glass.

Defect control in the making of sheet glass by the fusion process

A method is disclosed for producing low density, ceramic bodies in the nature of hollow or solid beads which may be used as such or bonded into a unitary mass. The bodies are composed of ion-exchanged, synthetic mica crystals wherein large cations, such as K.sup.+, have been exchanged for lithium and/or sodium ions from the mica. The method involves forming a gel by dissolution of a synthetic mica in a polar liquid, releasing droplets of the gel into a fluid to form shaped bodies, effecting the indicated ion exchange, and drying the beads thus formed.

Method of forming ceramic bodies

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Horseheads, NY, United States of America

Randy Lee Rhoads