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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 4036927 | Preparation of molecularly oriented containers using reheat process Molecularly oriented containers are formed from molded preforms made of an amorphous thermoplastic resin and having a finished neck tubular portion and a body portion which method includes subjecting the preform body to a thermoforming orienting step whil... | 07/19/1977 |
| 4022858 | Method for the production of foamed thermoplastic film having improved resiliency and flexibility characteristics Improvements in the production of foam form film or sheeting plastic products in order to increase the flexibility characteristics thereof by reducing the size of the voids and increasing the number of voids therein without substantially changing the bulk... | 05/10/1977 |
| 4021521 | Manufacture of work-hardened wires and profiles A process for the manufacture of wires and profiles, wherein thermoplastics are first mixed, in the melt, with from 5 to 40 per cent by weight (based on the mixture) of aluminum needles of length from 0.3 to 6 mm, of average diameter from 0.02 to 0.1 mm a... | 05/03/1977 |
| 4013597 | Fast cooling styrene polymer foams Expandable styrene polymer particles which have fast cooling rates during molding are produced by dry blending styrene polymer particles in the presence of 0.05 to 0.4 parts of silicone surfactant per 100 parts of polymer particles. The silicone surfactan... | 03/22/1977 |
| 4003973 | Process and apparatus for producing sheet film from tubular thermoplastic resin film A sheet film is produced from a tubular thermoplastic resin film by cooling a molten tubular film of crystalline thermoplastic resin, for example, polypropylene, extruded downward from an annular die in direct contact simultaneously with cooling liquids o... | 01/18/1977 |
| 4001357 | Process for the manufacture of fibers from fusible materials A process and apparatus for the manufacture of fibers from fusible materials and particularly materials of low viscosity. The melt and gaseous flow medium is passed through a Laval-nozzle at a supersonic speed. The nozzle and speed are so selected as to c... | 01/04/1977 |
| 4000234 | Process for the manufacture of polyolefin film A process for the manufacture of polyolefin film, especially high density polyethylene film, is disclosed. In the process molten polyolefin is extruded through an annular die and the tubular molten polyolefin film so formed is withdrawn from the die, expa... | 12/28/1976 |
| 4000233 | Two-stage application of antistatic agents to parisons A first antistatic composition is applied to a molten, freshly extruded thermoplastic tube prior to passing same into a sizing means, and thereafter a second antistatic composition is applied to said tube after same has passed through said sizing means an... | 12/28/1976 |
| 3998994 | Modified copolymers Modified copolymers which have viscosities which vary very markedly with changes in temperature are obtained by malaxating a statistical copolymer of ethylene and maleic anhydride containing between 0.5 and 20% by weight of units derived from maleic anhyd... | 12/21/1976 |
| 3997386 | Method for bonding thermoplastic high molecular weight materials An improved method for bonding same or different thermoplastic high molecular weight materials is described, in which the respective materials to be bonded are heated until their respective temperatures reach a temperature a little lower than the respecti... | 12/14/1976 |
| 3995004 | Process for the manufacture of filament yarn having protruding filament ends A process is provided for the manufacture of filament yarn having protruding filament ends on the basis of synthetic high polymers by melt spinning of the polymers through spinning nozzles, which comprises subjecting the multifilaments still hot after hav... | 11/30/1976 |
| 3993723 | Cooling thermoplastic tubes Cooling an extruding thermoplastic tube by feeding the tube adjacent a cooling surface, maintaining a sheath of heat-transfer fluid between the tube and surface and preferentially cooling at least a selected area of the tube by transversely displacing the... | 11/23/1976 |
| 3983195 | Pencil sheath compositions, method for making pencils Pencils made with a resin-based sheath to replace wood sheaths. A sheath material consisting essentially of a resin binder, a fibrous filler and a metallic soap is extruded around a marking core. The resulting extrudate is immediately chilled after leavin... | 09/28/1976 |
| 3981959 | Pelletizing method Apparatus for pelletizing synthetic plastic resins, comprising an extruding die assembly having extrusion orifice sleeves pervious to liquid, a water jacket surrounding each sleeve in such manner that water will pass through the walls thereof to chill pla... | 09/21/1976 |
| 3980746 | Method and apparatus for forming a thick-walled tubular product A mandrel and bushing sizing die assembly has an annulus formed between the mandrel and the bushing of the assembly for passing plastic material therethrough and forming a thick-walled tubular product. A middle portion of the annulus has a thickness in th... | 09/14/1976 |
| 3976732 | Method for the extrusion of tubular thermoplastic film The present invention relates to a method for the extrusion of tubular thermoplastic film which comprises extruding a melt of thermoplastic through an annular orifice to form a bubble or tube and while the tube is still in a semimolten condition, passing ... | 08/24/1976 |
| 3976733 | Method for the preparation of plastic articles by extrusion and cooling by gas bearing Thin plastic tubes are prepared by extruding a heat plastified tube, stretching the tube over a gas bearing having a diameter greater than the diameter of the extruded tube, cooling the surface of the tube adjacent the gas bearing and passing the tube ove... | 08/24/1976 |
| 3971838 | Process for continuously producing shaped articles of polystyrene foam Flat plate-type, rod-type or shaped articles of polystyrene foam are continuously produced from preliminarily expanded beads of polystyrene or a mixture of said preliminarily expanded beads with foamed polystyrene pieces recovered for reuse as raw materia... | 07/27/1976 |
| 3969462 | Polyester yarn production A method and apparatus are disclosed for the production of a novel industrial polyester filament yarn of improved uniformity wherein a plurality of filaments are melt-spun into a heated zone coupled with controlled cooling. The yarn produced has improved ... | 07/13/1976 |
| 3966597 | Oil or organic solvent-absorbent An oil or organic solvent-absorbent is prepared by extruding a molten thermoplastic resinous polymer blend of polystyrene and polyethylene containing a foaming agent through a die having a slit aperture of 0.1 - 1.0 mm width, quenching the extrudate at th... | 06/29/1976 |
| 3963844 | Extrusion-molded article having good thermal stability A thermally stable extrusion-molded article characterized by (1) consisting of a substantially linear polyester in which at least 90 mol% of the total recurring units consist of tetramethylene 2,6-naphthalate units, (2) having a density not in excess of 1... | 06/15/1976 |
| 3962392 | Methods of molding moldable textile fabrics Molding thermoformable textile fabric (knit, woven or otherwise), and particularly stretch fabric, into a permanent three-dimensional shape by vacuum-molding in a cavity in a vacuum mold, wherein flow of air through the fabric is blocked to enable it to b... | 06/08/1976 |
| 3961008 | Process for preparing polyester shaped articles A process for preparing a shaped article by melt-extruding a polyester containing tetramethylene naphthalene-2,6-dicarboxylate or hexamethylene naphthalene-2,6-dicarboxylate as a main recurring unit, wherein the extrudate is exposed to a temperature of 75... | 06/01/1976 |
| 3959545 | Unvulcanized expanded high green strength synthetic rubber product and method of manufacture An expanded rubber, e.g., a foam or sponge-type material is obtained by admixing with a high green strength rubber an expanding or blowing agent, causing the agent to function and then quenching the expanding product to cool and set the same for example w... | 05/25/1976 |
| 3959428 | Cooling slide A vinyl sheet material is formed on consolidation rolls. As the vinyl sheet material leaves the rolls, it is placed upon an inclined water slide. At the end of the water slide there is positioned a pair of pinch rolls which retard the movement of the viny... | 05/25/1976 |
| 3956443 | Method for cooling tires during post-inflation A method for cooling a tire during a post-inflation treatment utilizing aspirator jets for discharging air internally of the tire and for entraining the inflation air of the tire to cause turbulent air flow against the internal surface of the tire and aga... | 05/11/1976 |
| 3953270 | Manufacture of reinforced elastomeric hose This invention comprises a method for manufacturing elastomeric high pressure hose having reinforcement in the form of braided or spiral wrapped textile yarns between extruded inner and outer elastomeric layers. The method includes the steps of extruding ... | 04/27/1976 |
| 3950466 | Stabilising sleeve Method and apparatus for stabilising the position of a tubular film comprising an annular, gas-permeable arcuate sleeve through which a tubular film can be passed, and means to supply gaseous fluid under pressure inwardly through the sleeve to create a cu... | 04/13/1976 |
| 3950467 | Method for shaping tubular films in downward and wet manner A method for shaping a tubular film in a downward and wet manner is provided in which an extruded tubular film is coagulated in contact with a coagulation liquid which flows down along the inside surface of a cylindrical composite perforated wall composed... | 04/13/1976 |
| 3949042 | Method and apparatus for making laminar plastic sheet material A tubular, laminar, plastic sheet material having a core layer of oriented plastic and two outer layers of approximately isotropic plastic is prepared in extrusion apparatus whose die block has three channels wider than they are thick, and merging at acut... | 04/06/1976 |
| 3944645 | Method for balloon blown plastic molding This invention is a method of making blown plastic articles on an injection blow molding machine with an expandible balloon that covers the core rods and over which a parison is applied at an injection mold station. The parison can be blown at lower tempe... | 03/16/1976 |
| 3944644 | Process for producing polymeric film Polymeric film is stretched by pulling the film over a first roller which is heated and over a second roller which is cooled, the second roller rotating at a greater peripheral speed than the first roller. The necking-in of the film in the gap between the... | 03/16/1976 |
| 3941866 | Method of bonding a thermoplastic resinous protective coating to a metallic substrate A metallic substrate, such illustratively as wire, to which is bonded by means of a resinous hot melt adhesive and in a continuous operation a thermoplastic resinous coating. The method of making the coated metallic substrate comprises applying a resinous... | 03/02/1976 |
| 3936524 | Process for preparing polyisobutylene oxide moldings of excellent workability Polyisobutylene oxide polymer moldings containing 70 wt. % or more of isobutylene oxide, are prepared by heating the polymer to a temperature above 170°C and then quickly cooling the same by contacting it with a coolant to obtain crystalline resin having... | 02/03/1976 |
| 3933958 | Method of making tubular plastic film Plastic film is made using a heat transfer liquid circulated through the film extrusion die to control (by either heating or cooling, as required) the temperature of the plastic melt flowing through such die. A plastic bubble emerging at the outlet of the... | 01/20/1976 |
| 3933964 | Resin laminate and method of making A resin product is produced as an extrudate made up of two or more layers of different resin materials that retain desirable characteristics of each type of material. The layers are molecularly bonded or fully adhered in a face-to-face relation without an... | 01/20/1976 |
