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| Number | Title | Issue Date |
| 6761047 | Apparatus for melting off a glass part from a hollow glass object The apparatus for melting off a glass top part from a hollow glass blank has individual burner sections (3) each containing at least one burner nozzle. The individual burner sections (3) are held in a cutting plane and movably connected with each other... | 07/13/2004 |
| 6735986 | Apparatus for preventing redeposition of silica during flame severing A method for fusing an optical fiber preform comprises fusing the preform while blowing an oxidative gas against the preform to be fused from upper and lower directions of a fusing burner unit. An apparatus for carrying out the method includes a plurality of nozzles... | 05/18/2004 |
| 6408649 | Method for the rapid thermal treatment of glass and glass-like materials using microwave radiation A method of thermally treating a glass or glass-like material, preferably a glass sheet, without the use of conventional tunnel-type furnaces, to effect rapid heating of glass and glass-like materials from any initial temperature to any required temperatu... | 06/25/2002 |
| 6079230 | Apparatus for preparing quartz micropipettes The apparatus for preparing quartz micropipettes includes a pair of carriers mounted on a linear ball bearing guide which grasp opposite ends of a quartz glass capillary tube. A pair of miniature torches fueled by a mixture of oxygen and propane simultane... | 06/27/2000 |
| 6003339 | Glass compression molding machine and machining chamber therefor A molding die assembly includes an upper molding die and a lower molding die facing the upper molding die with provision for their alignment. The upper molding die includes an upper core, while the lower molding die includes a hollow cylinder and a lower ... | 12/21/1999 |
| 5992180 | Method and apparatus for bend-shaping a glass plate A glass plate is heated in a heating furnace and is bend-shaped to be a complexly curved glass plate while the glass plate is passed on curved rollers wherein support pads of a pushing mechanism push the complexly curved glass plate from an upstream side ... | 11/30/1999 |
| 5951734 | Semi-convective forced air system for tempering low E coated glass A semi-convective forced air system for heating glass sheets during a heating cycle. The system has a heating chamber, and a longitudinal conveyor extending lengthwise through the heating chamber. A plurality of longitidinally-extending air manifolds are ... | 09/14/1999 |
| 5888263 | Method of annealing a glass product and annealing apparatus for a glass product A mesh belt is stretched in an annealing lehr and a plurality of fine mesh elements, which constitute a fine mesh having gas-permeability and elasticity, formed by weaving a heat-resistant wire, are fixed onto the mesh belt so as to be arranged along the ... | 03/30/1999 |
| 5803943 | Apparatus for forming insulated glass Apparatus for forming insulated glass from a first and second sheet of glass, normally with a spacer seal disposed therebetween, comprising a frame assembly having a rigid frame assembly, a plurality of torsion bars pivotably mounted thereto, an aluminum ... | 09/08/1998 |
| 5779753 | Method of and apparatus for treating a solid workpiece, especially a glass tube A solid workpiece, e.g. a glass tube, is shaped by a focussed beam of visible light or light in an adjacent portion of the electromagnetic spectrum in a material removal, cutting or drilling operation and is heat-treated or remelted or shaped in a plastic... | 07/14/1998 |
| 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 |
| 5683483 | Manufacturing method and equipment for large, high-purity flat or curved quartz glass plate The present invention provides large, high-purity quartz glass plate with a high degree of smoothness and flatness, its manufacturing method and equipment. The invention is characterized by the procedure in which a quartz glass tube with an opening over a... | 11/04/1997 |
| 5665136 | Process for producing micro lenses using a laser beam Converged laser beam are irradiated, at right angles, to the surface of a workpiece which is made of glass and supported in a horizontal posture, so that the surface of the workpiece is locally heated and melted. The surface of the workpiece is formed int... | 09/09/1997 |
| 5512078 | Apparatus for making linearly tapered bores in quartz tubing with a controlled laser Method and apparatus for providing a linearly tapered bore in quartz/glass tubing includes a laser and elements for focusing the laser onto the glass tubing. The glass/quartz tubing is rotated in the laser beam and is moved vertically in the laser beam to... | 04/30/1996 |
| 5120343 | Apparatus for producing optical glass element An apparatus of producing an optical glass element of the present invention comprises the steps of displacing a gob of optical glass on a first heat working jig to a second heat working jig by making the gob of optical glass to adhere to the second heat w... | 06/09/1992 |
| 5110340 | Apparatus for removing a marginal zone external of an outline cut in a glass sheet A glass sheet has marginal zones thereof removed by (a) subjecting the marginal zones to a heating flame, and (b) raising the glass sheet (during or after the flame heating) while restraining upward travel of the marginal zones. The lifting is performed b... | 05/05/1992 |
| 4842628 | Method of verifying a porous article made out of glass soot and furnace for carrying out the method A method of vitrifying a porous cylindrical article made out of glass soot, especially for manufacturing a preliminary blank for optical fibers. The article is heat-treated in a furnace in a vacuum or in an atmosphere that contains helium. The porous arti... | 06/27/1989 |
| 4838915 | Method for heating thick-walled glass tubes and apparatus therefore A method for heating thick-walled glass tubes, particularly quartz tubes, in the manufacture of optical fibres while using microwave energy. According to the invention, the tube (5) is pre-heated to a temperature of about 1000° C.-1500° C., preferably i... | 06/13/1989 |
| 4687503 | Apparatus for loading and unloading articles at machines for cutting off excess ends of hollow glass, plastic or similar articles An apparatus for loading and unloading glass articles from an article cutting machine where the glass remainders of the said glass articles are removed during the manufacturing process. Said apparatus comprising: a supporting structure with a vertical sha... | 08/18/1987 |
| 4572732 | Machine for cutting off excess ends of hollow glass, plastic or similar articles A machine for trimming hollow glass articles includes a support in which a semi-finished article is held stationary and immovable, and a pair of split oscillatory burners for flame cutting at least one excess end of the semi-finished article, the burners ... | 02/25/1986 |
| 4227910 | Apparatus for supporting lenses during heat treatment Apparatus for supporting a lens during heat treatment that has a heat-sinking material in contact with one side of a heat-conductive cover and the other side of the heat-conductive cover in contact with a portion of a lens being treated to produce photoch... | 10/14/1980 |
| 4157909 | Apparatus for forming mercury-filled capillary tubes The disclosure is of apparatus including two pairs of metal gripping blocks held together by a spring and mounted adjacent to wedge blocks carrying wedges for opening each pair. An operating plate is provided which drives the apparatus to cause the wedge ... | 06/12/1979 |
| 4072490 | Apparatus and process for producing a gradient photochromic ophthalmic lens A gradient photochromic ophthalmic lens blank is produced by heat treating an ophthalmic lens blank composed of potentially photochromic glass at a temperature sufficient to develop photochromic properties therein, while maintaining in proximity to a port... | 02/07/1978 |
