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| Number | Title | Issue Date |
| 7331198 | Bending apparatus for a glass sheet A desired temperature distribution is efficiently formed on a glass sheet by a simple structure without lowering heat efficiency within a furnace. A heating furnace conveys a bending mold of a glass sheet and a radiation-heating device is provided in the heating fur... | 02/19/2008 |
| 7302813 | Method and device for bending glass panes in pairs In a method for bending, in pairs, panes placed one upon the other, heated to their softening temperature, the pair or panes is deposited on a bending frame and prebent under action of the force of gravity. The prebent pair of panes is transferred onto a suction ben... | 12/04/2007 |
| 7231787 | Apparatus and method for bending and/or tempering glass An apparatus and method for bending and/or tempering glass substrate(s) are provided. The amount of near-IR radiation which reaches the glass to be bent and/or tempered is limited (e.g., via filtering or any other suitable technique). Thus, the IR radiation (used fo... | 06/19/2007 |
| 7082260 | Apparatus and method for bending and/or tempering glass An apparatus and method for bending and/or tempering glass substrate(s) are provided. The amount of near-IR radiation which reaches the glass to be bent and/or tempered is limited (e.g., via filtering or any other suitable technique). Thus, the IR radiation (used fo... | 07/25/2006 |
| 7007510 | Method of producing an optical member An object of the present invention is to provide an improved blank such that an optical member of a high homogeneity can be obtained therefrom, and to provide a vessel and a heat treatment method for heat-treating a highly uniform synthetic quartz blank. In a first ... | 03/07/2006 |
| 6812173 | Lighting glass and colored glass bulbs, and manufacturing method thereof Lighting glass containing 0.3 to 1.0% by weight of Sb as Sb2O3 and 0.5 to 1.0% by weight of S as SO3 in a SiO2—Al2O3—R1O—R22O-based glass (where R1 re... | 11/02/2004 |
| 6715317 | Process and apparatus for the production of a cylindrical component of glass A glass composition to be softened is fed to a heating zone and is shaped continuously into a cylindrical component in a deformation zone, and the cross-sectional geometry of the component is determined. A feed device, a heating device, and a take-off device are pro... | 04/06/2004 |
| 6701750 | Method and apparatus for molding a glass product On molding a glass product by pressing a glass gob by the use of a mold composed of upper and lower dies each of which has a molding surface, a molten glass is supplied as the glass gob onto the molding surface of the lower die. Cooling is carried out for... | 03/09/2004 |
| 6629436 | Apparatus for thermal treatment of glass and method and thermally treated glass therefrom The present invention is directed to an apparatus for thermal treatment of glass and method and thermally treated glass therefrom. The apparatus is capable of supporting the glass during thermal treatment such as tempering, annealing, bending, and/or shap... | 10/07/2003 |
| 6568216 | Method for manufacturing a discharge tube 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 q... | 05/27/2003 |
| 6526780 | Method of manufacturing a cathode ray tube To increase the strength of the glass panel of a CRT, the temperature of the glass panel is reduced during reforming from a temperature above, preferably at least 30° C. above the annealing point, to a temperature well below, preferably at least 80° C. ... | 03/04/2003 |
| 6487878 | Method for manufacturing a discharge tube 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 q... | 12/03/2002 |
| 6327875 | Control of median crack depth in laser scoring A glass sheet is separated by propagating a crack in the glass sheet by moving a laser beam across the surface of the glass sheet along a desired line of separation and then streaming coolant at the glass sheet at a predetermined distance behind the laser... | 12/11/2001 |
| 6321570 | Method and apparatus for tempering and bending glass A method of and apparatus for bending and tempering a sheet of glass heated to a formable state provides an improved rigid mold and pressing member for pressing the heated sheet against the rigid mold which cools and bends the sheet. The pressing member i... | 11/27/2001 |
| 6141991 | Press molding apparatus for glass optical elements and molding method for glass optical elements Disclosed are a molding apparatus for glass optical elements a plurality of molds each constituted of an upper mold and a lower mold, a matrix supporting the molds, and heating means wound around the matrix for heating the molds, wherein the matrix extend... | 11/07/2000 |
| 5938810 | Apparatus for tempering and bending glass A method of and apparatus for bending and tempering a sheet of glass heated to a formable state provides an improved rigid mold and pressing member for pressing the heated sheet against the rigid mold which cools and bends the sheet. The pressing member i... | 08/17/1999 |
| 5766294 | Method and apparatus for producing an optical element using a molding block and a temperature effecting mechanism contacting the molding block for heat exchange A method and an apparatus for producing an optical element capable of performing a molding temperature control required for a plurality of independent molding blocks in a short period of time, and continuously and simultaneously producing a plurality of d... | 06/16/1998 |
| 5656052 | Apparatus for and method of heating and bending glass sheet A furnace is provided for the heating of glass sheets to be bent, whereby precise control of the temperature profile across a sheet may be achieved, resulting in improved control over the shape to which the sheet is bent. The furnace has at least one diff... | 08/12/1997 |
| 5591245 | Method and apparatus for developing and edge stress in a windshield in a windshield bending furnace The invention relates to a method and apparatus for developing an edge stress in a windshield bending furnace. Adjacent to a ring mould is located a metallic, flat extra frame in a manner that the lower surface of a bent windshield remains at a small dist... | 01/07/1997 |
| 5540746 | Glass forming apparatus A glass rod used as a molding material is inserted into a cylinder, pressed and heated with a temperature gradient in which the tip side of the glass rod is at a higher temperature. The glass rod is melted on the tip side thereof, and it is solidified on ... | 07/30/1996 |
| 5380348 | Method for treating glass sheets on a gas hearth Apparatus operable in accordance with the method of the present invention is provided for selectively cooling areas of a glass sheet during heating in the lehr in order to eliminate hot spots and minimize undesirable sagging of portions of the glass sheet... | 01/10/1995 |
| 5340372 | Process for vitrifying asbestos containing waste, infectious waste, toxic materials and radioactive waste Material, such as, for example, sealed double bags of asbestos containing waste or ash from infectious waste or toxic material or radioactive waste, is transferred into a glass melt of a furnace. Gas bubbles released into the melt form a gas curtain which... | 08/23/1994 |
| 5279635 | Method and apparatus for controlling the temperature of glass sheets in press bending A method of and apparatus for establishing a predetermined thermal profile in a glass sheet immediately prior to press bending outside the heating furnace. The press bending members are provided with arrays of heating elements that are individually or zon... | 01/18/1994 |
| 5141548 | Method of manufacturing a capillary flow cell A capillary flow cell in which a capillary (9) partially extends along the optical path of the cell and has its two end portions (12, 13) bent to achieve an essentially Z-shaped configuration. A template (1) has a central bore (2) in which the middle part... | 08/25/1992 |
| 5139552 | Apparatus for bending and tempering sheet glass A glass sheet such as an automobile window glass sheet is bent to shape and tempered at one stage by a sheet glass bending and tempering apparatus. The sheet glass bending and tempering apparatus has solid contact members for pressing a glass sheet, which... | 08/18/1992 |
| 5116398 | Process for forming fiber reinforced composite articles A method of manufacturing a glass or glass-ceramic matrix composite article is disclosed which serves to eliminate the need for an expensive vacuum hot press and to significantly reduce the time required for densification. A preform composed of a mixture ... | 05/26/1992 |
| 5078769 | Method and apparatus for pressing hollow blanks from glass Hollow blanks of glass are pressed between a hollow mold and a plunger (10). The mold comprises an inner wall complementary to the outer side of a blank. The plunger (10) comprises an open-pore plunger head (11) having a surface (24) complementary to the ... | 01/07/1992 |
| 4983200 | Glass shaping ring having a thermal insulating member and method of shaping glass sheets using same A method of reducing localized tensile stresses in shaped glass sheets formed by sag bending. An unperforated thermal insulating member is mounted throughout the area within a shaping rail and spaced below a heat softened glass sheet shaped on the shaping... | 01/08/1991 |
| 4979977 | Bending iron having member to effect reverse bend and method of using same A method and apparatus for controlling the shape of heat softened glass sheets. A pan member is positioned inboard of the shaping rails of a bending iron. The upper surface of the pan member has a curvature corresponding to the final desired shape of a se... | 12/25/1990 |
| 4959090 | Glass enamel coating compositions In glass enamel coating compositions containing a glass frit system, optionally a metal oxide pigment and a vehicle therefor, the improvement comprising the presence therein of a series of metal powders to provide anti-stick, color maintenance and adhesio... | 09/25/1990 |
| 4871385 | Process and device for cooling of sheets of bent glass so as to produce edge stresses Compression stresses are formed on the periphery of a glass sheet by blowing cooling air on the periphery of the heated glass sheet. The cooling air is blown by using a pyramidal deflector to deflect air flow radially outward toward the edges of the glass... | 10/03/1989 |
| 4826522 | Method and apparatus for making contact-tempered glass sheets with reinforced edge stresses The invention relates to the tempering of sheets of glass and optionally their bending by the so-called contact process. It proposes a process in which the edge stresses of the glass sheets are reinforced by cooling the edges of the glass sheets in relati... | 05/02/1989 |
| 4820321 | Method and apparatus for fabricating an expanded beam cylindrically terminated optical fiber taper An apparatus and method are disclosed for fabricating an expanded beam cylindrical terminated optical fiber taper from a reduced diameter preform rod. The present invention comprises uniformly heating the circumference of a predetermined portion at an int... | 04/11/1989 |
| 4743285 | Glass bending apparatus with retractable belts and method for using same Glass which is heated to a softened state is bent from a generally planar state to a curved form while being transported on a moving conveyor made up of a plurality of generally parallel belts. The contour of the conveyor varies from being generally flat ... | 05/10/1988 |
| 4738703 | Method of molding optical lenses Optical lenses high in configurational accuracy with smooth surfaces are press molded in a carefully finished, polished and properly dimensioned mold preferably in a non-oxidizing atmosphere. The molding operation includes placing a quantity of glass havi... | 04/19/1988 |
| 4728351 | Method for densifying a preformed porous body of a material the main constituent of which is SiO2 Porous bodies of a material which comprises SiO2 as the main constituent are heated by passing a zone of high temperature through the body. The zone of high temperature is obtained by irradiation with light of a wavelength which is absorbed by ... | 03/01/1988 |
| 4687501 | Lightweight bending iron heat shields for glass bending molds Shields tend to retain heat while shading glass sheets from a heat source. As the shield retains more heat, it loses its effectiveness to shade the glass sheet. A second shield is positioned between the glass sheet and the hot shield to maintain effective... | 08/18/1987 |
| 4664692 | Heat treatment furnace for glass A gas hearth furnace for heat treatment of a plate glass consists of a plurality of aligned hearth beds on which a plate glass moves to be subjected to heat treatment. Four support pillars are provided for supporting each hearth bed through a pair of supp... | 05/12/1987 |
| 4596109 | Method for crimping a tube An apparatus for forming a tube including a base, a pair of legs secured to the ends of the base, and a holder base attached to the base. A tube holder for holding the tube is connected to the holder base. The tube holder has a structure defining a pair o... | 06/24/1986 |
| 4427430 | Method controlling thermal gradients in glass In the thermal cycles utilized for frit sealing glass members together for forming a glass housing and for baking-out such housing, shielding means are provided to protect and shield those portions of the glass members having multiple surfaces which would... | 01/24/1984 |
