Matches 151 - 200 out of 290 < 1 2 3 4 5 6 >
Match Document Document Title
5322542 Method of and apparatus for chamfering edge of glass vessel  
A glass vessel edge chamfering method and apparatus wherein heat energy can be controlled readily and chamfering of a glass vessel having a deformed profile, local chamfering and simultaneous...
5308371 Method of forming fluoride glass fiber preform  
A method of forming a fiber glass preform includes the steps of: (a) pouring a cladding glass into a mold; (b) pouring a core glass on a flat horizontal upper surface of the cladding glass so as to...
5286270 Method of forming glass having a Zn.sub.z SiO.sub.4 enamel layer thereon  
The present invention provides a method of producing an enamel finish on formed section of glass. The enamel composition partially crystallizes upon heating, thereby helping to prevent the forming...
5284501 Method of manufacturing glass optical element  
The invention provides a method of manufacturing extremely precise glass optical element by thermally deforming optical glass on the optical surf ace of a thermal processing jig coated with...
5282878 Apparatus for molding optical glass elements  
The apparatus for molding an optical glass element is made up of relatively movable upper and lower molds for press molding a glass blank, and a plurality of infrared ray lamps encircling the upper...
5282911 Method of making curved insulating glazing panes  
For the manufacture of curved insulating glazing panes having close tolerances of form, surface and thickness, the curved single glass sheets (2; 22) are brought to their desired shape via rigid...
5281249 Reshaping a glass lens blank suspended on a flow of gas  
A method and apparatus for imparting a predetermined contour to an ophthalmic glass lens. The method comprises positioning a forming manifold in the base of a reshaping chamber, the upper surface...
5264016 Method for manufacturing glass lenses  
A glass blank is molded into a lens while being clamped between a pair of molds and heated by a heater. A mold clamping force is applied, substantially concurrently with the heating, to the molds...
5261938 Process for producing rod glass having refractive index distribution  
A process for producing a rod glass having a refractive index distribution, which includes pressing a glass at a temperature below the glass transition temperature to form a glass having a density...
5259858 Method and apparatus for forming a mouth in a glass container  
Satisfactory molding of a spout in the upper inclined opening edge of a glass container is effected by heating the spout molded portion of the upper opening edge to soften it, premolding the heated...
5250099 Glass molding process and molding apparatus for the same  
Disclosed is a glass molding process using an apparatus for manufacturing a glass preform into a glass molded product. In the process a mold is prepared for pressing the glass preform. The mold...
5246476 Method for manufacturing optical elements with selective heating and pressing  
A method for forming a glass preform into an optical element utilizing a formation chamber having a central axis and including a plurality of glass preform heaters, a plurality of glass preform...
5236485 Process and device for shaping a gob  
In a process for shaping a gob in order to obtain a hollow glass article by means of an electronically-regulated and hydraulically-propelled level, the process of shaping the gob into a rough or...
5236486 Shaped gradient fabrication in lenses by molding from axial gradient  
Shaped gradient profiles of index of refraction in lenses are fabricated from axial gradients. While the resulting lens has both radial (or cylindrical) and axial components, and, strictly...
5228894 Press-forming method for optical element  
A method for press-forming a glass preform includes the steps of applying positioning pressure to an upper mold as the temperature of the upper mold and a lower mold increase to set values,...
5221311 Evacuated sampling vial  
An evacuated vial for collecting a fluid sample and a method for manufacturing the vial comprising a cylindrical glass tube, one end of the tube formed into a frangible tip, a glass bottom closing...
5215566 Method of manufacturing optical element  
A method of manufacturing an optical element from glass material is accommodated between an upper member and a lower member of mold. The glass material is press-molded in a state and heated to a...
5213600 Method of manufacturing an optical Storage disk  
An optical storage disk includes a glass substrate (1) into which guide tracks (3) for servo-controlling the focussed light beams are directly stamped in by hot stamp process. After stamping, the...
5203691 Torch assembly for heating glassy tubes  
A preform tube (31) is caused to be collapsed into a preform rod by causing a heat zone (54) provided by a torch assembly (50) to traverse the tube longitudinally in a plurality of passes. During...
5201926 Method for the production of coated glass with a high transmissivity in the visible spectral range and with a high reflectivity for thermal radiation  
Method for making glazing with a high transmissivity in the visible spectral range and with a high reflectivity for thermal radiation as well as low surface resistance. On substrates of mineral...
5194082 Method of manufacturing glass molding articles  
In a method of and an apparatus for manufacturing a plurality of kinds of glass molding articles, a plurality of processing compartments are arranged in order of processing steps. The compartments...
5192352 Molding method using glass blank  
The present invention relates to a glass blank for producing optical element used for the press molding thereof, having a core glass and a surface layer covering at least the optically functional...
5188650 Press molding method for an optical element and apparatus therefor  
Molding is effected while pressing pressure is continuously or stepwise controlled so that at the initial stage in which the temperature distribution of a glass blank is not sufficiently...
5185021 Method of manufacturing preform for nonoxide glass fiber  
In a method of manufacturing a preform for a nonoxide glass fiber, cladding and core glass materials are placed in a cylinder of an extrusion apparatus such that ground end faces of the respective...
5173100 Molding method for optical element  
A method of molding an optical element by pressing glass material uses a cavity composed of a pair of mold members and a side mold member. Either or both of the pair of mold members are rendered...
5169422 Methods for heating elongated glass substrate  
A glass tube (31) from which optical fiber is to be drawn is heated by a torch assembly comprising a plurality of nozzles (54--54) disposed on a carriage. In order to avoid contamination of the...
5163989 Method for forming a balloon mold and the use of such mold  
A mold and method for forming a balloon for dilatation catheters, particularly balloons with a prismlike shape with a transverse polygonal cross section when the internal pressure is at atmospheric...
5160361 Method of manufacturing optical element  
A method of manufacturing optical elements which is capable of obtaining optical elements at high accuracy by molding through employment of an optical element molding glass material preliminarily...
5160362 Process for manufacturing optical element  
In a process for manufacturing an optical element, in which a molding material is put in molds and is heated and press-molded to manufacture an optical element, a preheating treatment of the...
5147437 Invisible flat-top mold blank and method for manufacturing same  
A mold blank for manufacturing eyeglass lenses containing a flat top bifocal segment. A ceramic platform is first constructed containing an optical surface having a recess corresponding to the flat...
5141547 Process for production of molded glass article  
A process for the production of a molded glass article is disclosed, said process comprises the steps of: applying wet treatment to a surface of a lead oxide-containing glass material, thereby...
5125946 Manufacturing method for planar optical waveguides  
A metehod of manufacturing planar optical waveguides in which a planar optical preform which is stretched to form a planar optical cane with substantially smaller cross-sectional dimensions than...
5125945 Method and apparatus for parallel alignment of opposing mold surfaces by controlling the thermal expansion of the apparatus  
In a mold apparatus, the receiving molding surface and the opposing molding surface are each mounted coaxially and in sliding fashion within an alignment means. Both of these alignment means have...
5122176 A method of densifying a glass or glass composite structure  
A method of densifying glass-composite structures using a superplastically deformed foil to partially encapsulate a glass-composite part and a part holding die. The die and part are contained in a...
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...
5093177 Shaping glass sheets  
Selected portions of a glass sheet are heated to elevated temperatures and offset, i.e. reformed, relative to the remaining portions of the glass sheet while maintaining the optical properties of...
5090978 Methods of collapsing glass tube  
A preform tube (31) is caused to be collapsed into a preform rod by causing a heat zone (54) provided by a torch assembly (50) to traverse the tube longitudinally in a plurality of passes. During...
5078768 Hot isostatic pressing of fluoride glass materials  
Defect-free fluoride glass materials are made by hot isostatic pressing (HIP) of a fluoride glass. The process may be used to manufacture preforms or bulk fluoride glass. The external pressure...
5037800 Method of drawing glass encased superconductive oxide core  
A sintered elongated core made of a ceramic type superconductive material consisting essentially of (R x Ba (1-x)) 3 Cu 2 O z in which R is Sc, Y La, Ho, Dy or Eu; x is in the range of from 0.3...
5032159 Method of manufacturing optical device  
In a method of molding an optical device by press-molding a glass preform by using molding dies, the press-molding process is executed under a mixed gas atmosphere of a nonoxidizer gas and a...
5032160 Method of press molding lens material  
A lens molding method where a lens material is set between an upper mold and a lower mold, and the molding pressure is reduced or made zero at least once during a heating & pressing step without...
5013348 Mold assembly and methods for producing molded glass  
A mold assembly adapted for producing a molded glass in a relatively thin form has an upper mold and a lower mold. The lower mold carries thereon a glass to be molded during the heating, pressing...
4976764 Method of pretreating glass preform with oxygen plasma  
According to the present process for producing a molded glass article, the surface of a lead oxide-containing glass material to be press molded is subjected in advance to an oxidation treatment...
4969944 Process to mold precision glass articles  
The present invention is directed to a four-step process for molding glass articles of high precision and excellent surface figure. A glass preform having an overall geometry closely approximating...
4964903 Apparatus for molding glass molds  
An apparatus for molding a glass mold for subsequent molding of glass optical elements or lenses is disclosed. The apparatus comprises a master having a snout and a master ring disposed around the...
4957529 Method of decorating glass and ceramic articles  
Decorative processing is performed with repetitively pulsed discharge at atmospheric pressure of a (RP TEA) by CO 2 laser with pulse energy 1 to 5J, power density at operation from 1×10 6 W/cm 2...
4950318 Method of joining self-aligning optical fibers  
A method of forming an optical fiber joint between a pair of elongated optical fibers each of which has a longitudinal axis surrounded by a core and cladding having different refractive indices and...
4941906 Balanced molding of optical elements  
Glass optical elements are molded by moving molds toward one another to press the glass and controlling the movement of the molds to balance the complete formation of the molded surfaces. A first...
4929265 Method of molding glass optical elements  
A method of molding precision glass optical elements or lenses is disclosed. Precision molded glass molds are first provided which define a glass mold cavity having a predetermined desired size,...
4921522 Method and apparatus for forming a micropipette with uniform application of heat  
The micropipette puller of this invention includes a pair of gripping jaws that pull a length of glass tubing in opposite directions. The source of heat is a laser device and a laser beam is...
Matches 151 - 200 out of 290 < 1 2 3 4 5 6 >