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| Number | Title | Issue Date |
| 7392667 | Method and an apparatus for shaping a tubular object made of thermoplastic material The invention relates to a method for shaping a tubular object made of glass or glass ceramics or any other thermoplastic material, comprising the following method steps: the object is heated up to softening; an in... | 07/01/2008 |
| 6789398 | Mold incorporating a heat source and apparatus and method for using such molds A heat source is formed within one piece of a multi-piece mold designed to shape a glass tube. The one piece of the mold can then be used as a source of intense heat to render the glass malleable and to also contribute to shaping the tube in conformance with the mol... | 09/14/2004 |
| 6769276 | Internal adjustable mold apparatus for shaping the end of a fiber preform tube Apparatus for shaping a selected end region of a hollow cylindrical glass tube includes an internal mold placed within the selected end region for supporting the walls of the tube and controlling the shape of the internal surface of selected end region of the tube, ... | 08/03/2004 |
| 5300134 | Device and process for deformation of the heat-softened end of a glass tube An apparatus and process is provided for the deformation of the heat-softened end of a glass tube. In the formation of hollow articles such as, for example, vials from glass tubes, either large processing pauses occur or the formation elements have to be ... | 04/05/1994 |
| 5017208 | Apparatus for forming a groove in a glass tube Apparatus for forming a groove in a glass tube without contacting the glass tube in the groove region. The apparatus includes a pair of chucks for holding opposite ends of the glass tube. The chucks are coupled to a motor for rotating the glass tube about... | 05/21/1991 |
| 4923498 | Method for forming a groove in a glass tube A method for forming a groove in a glass tube without contacting the glass tube in the groove region. The method includes the steps of rotating the glass tube about its longitudinal axis, heating a localized area of the glass tube where a groove is to be ... | 05/08/1990 |
| 4585468 | Apparatus for manufacturing a discharge lamp envelope having multiple constrictions An apparatus for manufacturing a fluorescent lamp envelope comprises means for holding the envelope, a plurality of heat sources, means for providing relative rotation between the envelope and the plurality of heat sources with the heat therefrom acting o... | 04/29/1986 |
| 4462519 | Glass container pusher A pusher is disclosed for transferring plural glass containers onto a conveyor. The pusher includes a finger for each glass container. Each finger is separately retractable after its container has been transferred onto a conveyor so as to prevent a collis... | 07/31/1984 |
| 4441908 | Vial tooling apparatus A machine for fabricating articles such as glass vials from tubular stock includes a plurality of rotating chucking stations which revolve about the central vertical axis of the machine and a plurality of tooling stations which form the vial finish. The p... | 04/10/1984 |
| 4304586 | Method of manufacturing a cathode-ray tube A method of manufacturing a cathode-ray tube is provided by drawing a glass tube section softened by heating onto a mandrel whose transverse dimensions increase near one end of the tube section in the direction of the end at least twice in a generally ste... | 12/08/1981 |
| 4283217 | Method of forming a shaped fluorescent light bulb envelope An elongated envelope for a fluorescent light bulb is held at each of its ends, and heated to a degree by which it is bendable. The ends are then moved relatively to each other in a path by which they are turned inwardly in opposition to each other and to... | 08/11/1981 |
| 4247319 | Process and apparatus for calibrating of glass tube sections The invention relates to a process for calibrating sections of glass tubing, wherein a glass-tubing section is heated to a softening temperature, shaped to the calibrating dimension, and allowed to cool. The invention furthermore concerns suitable equipme... | 01/27/1981 |
| 4010022 | Apparatus for making fused silica tubing Tubes of transparent, translucent or opaque fused silica are made by heating a hollow cylindrical blank in a drawing zone, drawing the blank from the zone while maintaining its interior under pressure and rotating same about its longitudinal axis, and cal... | 03/01/1977 |
