...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 7862322 | Resin infusion between double flexible tooling system A resin infusion system uses a housing that has an upper flexible diaphragm and a lower flexible diaphragm such that the two diaphragms form a cavity. A fiber reinforcement mat is positioned within the cavity. A mold is positioned below the lower diaphragm. A flow p... | 01/04/2011 |
| 7841849 | Dry material transport and extrusion A process for making construction material may include mixing predetermined portions of two or more components of cementitious materials without ingredients that would allow the mixture to cure, and separating the un-curable mixture of the two or more components int... | 11/30/2010 |
| 7318717 | Method and apparatus for forming fiber reinforced composite parts A method and apparatus for combining raw fibrous and binding materials in a single mixing step (Step S3), followed by consolidation (Step S5) so as to greatly shorten the overall cycle time to a finished fiber-reinforced composite part. Chopped fibrous... | 01/15/2008 |
| 7309224 | Device for preparation of plastic materials for recycling purposes A device for the preparation of plastics material for recycling purposes has a container (1) with an upper inlet opening (10) for the material. In the container (1), at least one tool (14) rotates about the vertical container axis. This t... | 12/18/2007 |
| 7275857 | Apparatus for treating plastics material A device for treating plastics material, in particular thermoplastic plastics material, has a receiving container (1) which has a base (15) and lateral walls (14). In the receiving container at least [one] disc (17) is arranged close to t... | 10/02/2007 |
| 7197901 | Washing machine The invention provides an apparatus comprising a drum for containing and agitating an article, wherein the drum comprises at least two rotatable portions in rotatable connection with one another, a rotator member in connection with each rotatable portion for rotatin... | 04/03/2007 |
| 7097442 | Extruder An extruder capable of obtaining a treatment volume equal to that of the conventional art without enlarging a screw diameter is provided. The extruder includes screw shafts, a drive unit, and a barrel, in which three or more screw shafts having the same diameter and... | 08/29/2006 |
| 6969247 | Injection molding unit with a device for mixing and metering plastic melt and additives An injection unit for an injection molding machine includes an injection device in the form of a plunger/screw, which is driven axially and rotationally in a housing, and a device intended for mixing and metering plastic melt and including an inlet for introduction ... | 11/29/2005 |
| 6903308 | Vacuum cast ceramic fiber insulated band having heating and cooling elements A ceramic fiber band that can fulfill a plurality of functions in connection with the injection and/or extrusion process of an injection molding or extrusion apparatus (i.e. heat, cool, and insulate), thereby reducing overall energy costs and creating a safer workin... | 06/07/2005 |
| 6726355 | Self-cleaning mix head having a longitudinal mixer for a molding system A mix head assembly including a mix chamber having a mixer rotatably mounted therein. The mixer extends for a longitudinal length and defines a multiple of vanes which agitate the fluid material components as the mixer is rotated. A plunger is movably mounted in the... | 04/27/2004 |
| 6692669 | Methods and apparatus for recycling asphalt shingle material into composite board products Used and manufacturing scrap asphalt shingle material is processed into a relatively coarse material comprising pieces or flakes of a maximum predetermined size. The flakes are finish processed into a composite board product in a method that includes ... | 02/17/2004 |
| 6543618 | Process to recover raw rubber compound from semi-finished, reinforced, technical rubber products, especially hoses, before cross-linking, and equipment therefor A process for recovering raw rubber compounds from unvulcanized reinforced, semi-finished technical rubber products includes pressing the rubber products between metal surfaces heated to a temperature from 50 to 300° C., or preheating the rubber products... | 04/08/2003 |
| 6525126 | Method for producing reinforced thermoplastic resin composition and melt-kneading apparatus A method for producing a reinforced thermoplastic resin composition in a stable manner for long periods of time, comprising providing a melt-kneading apparatus with a plurality of supply ports arranged in line with the direction, along which a molten resi... | 02/25/2003 |
| 6306322 | Method and device for filling casting molds with casting resin The invention concerns a method and device for filling at least one casting mould (10) with a castable, liquid compound, in particular casting resin. In order to decrease the mould-occupation time considerably, the reactivity of the casting compound is fi... | 10/23/2001 |
| 6302677 | Apparatus for continuously molding chocolate products Methods for continuously molding finished chocolate tablets, pieces and the like are disclosed. Apparatus for use with the method, comprise a chilled rotating mold having at least one recess into which liquid chocolate is deposited. Liquid chocolate, is h... | 10/16/2001 |
| 6143214 | Mixing and dispensing system for rapidly polymerizing materials A mixing and dispensing system for reactively combining organic chemical components to produce a rapidly polymerizing material for use in molding and encapsulating small and usually delicate devices, such as electronic components. The system uses a novel ... | 11/07/2000 |
| 6136246 | Screw extruder with improved dispersive mixing elements A screw extruder (10) having a barrel (18) which has a bore (26) defining an inner surface (44) and one or more extruder screws (28), positioned within the bore (26). The extruder screw or screws (28) include a central shaft (34) and one or more screw fli... | 10/24/2000 |
| 6080346 | Extrusion apparatus and method and extruded thermoplastic polymer Polyvinyl alcohol is processed into fiber or pellets for further processing, or directly into water-soluble film, in a screw-and-barrel extruder, which has a slow temperature rise and a mild kneading action achieved by a non-stick coating applied to the s... | 06/27/2000 |
| 5935618 | Apparatus for manufacturing molded materials solidified by sulfur An apparatus for manufacturing molded materials solidified by sulfur includes an apparatus for bringing the water content of a solid raw material to be mixed with sulfur, such as slag and dust resulting from steel-making, to 3% by weight or below, an appa... | 08/10/1999 |
| 5932159 | Screw extruder with improved dispersive mixing A screw extruder (10), including a barrel (18) having a bore (26) which defines an inner surface (24). At least one extruder screw (28) is positioned within the bore (26), each screw (28) further including a central shaft (34) and at least one screw fligh... | 08/03/1999 |
| 5851562 | Instant mixer spin pack A multiplate spin pack receives metered molten polymer and metered amounts of additive components selectively proportioned to produce desired characteristics in extruded fiber. The additive components are mixed together and blended with the polymer by pas... | 12/22/1998 |
| 5837295 | Scraper blades for extruder Angled scraper blades provided on the end of a screw shaft of an extruder provide thrust for propelling polymer toward the die opening of the extruder. The scraper blades help prevent trapping of polymer between the shaft and the die plate of the extruder... | 11/17/1998 |
| 5811048 | Process of and apparatus for homogenizing a flow stream A method and apparatus for homogenizing a flow stream of plasticized material supplied from an extruder, to reduce viscosity gradients causing defects in extruded products, wherein a flow inverting homogenizer positioned in the flow stream and incorporati... | 09/22/1998 |
| 5700885 | Single screw method and apparatus An extruder screw having a plurality of plasticating sections sufficient for plasticating polymeric materials of different bulk density.... | 12/23/1997 |
| 5679381 | Systems for manufacturing sheets from hydraulically settable compositions Compositions and methods for manufacturing containers from sheets having a hydraulically settable matrix are disclosed. Suitable compositions are prepared by mixing together a hydraulic binder, water, and appropriate additives (such as aggregates, fibers,... | 10/21/1997 |
| 5637331 | Spin system for thermoplastic yarns A spin system for thermoplastic yarns is provided with a melt line, in which the main flow of the melt is transported to a distributor pump. The distributor pump comprises several individual pumps, which divide the main melt flow into several partial flow... | 06/10/1997 |
| 5585122 | Apparatus for converting raw materials into a molded end product A recycling apparatus in which high density polyethylene, thermal polyolfin, or coated or non-coated oriented polypropylene and rubber are mixed into a batch and converted to useful molded products. The apparatus includes a first mixer, a second mixer, a ... | 12/17/1996 |
| 5545029 | Equipment for filling one or more casting molds with castable, liquid materials Equipment, in particular pressure gelling equipment, is provided to fill one or more casting molds with castable, liquid materials of which the components are fed by pumps through closable conduits to at least one plunger-cylinder system from where the co... | 08/13/1996 |
| 5536517 | Multidie positive displacement metering apparatus and process This apparatus provides positive displacement synchronized metering of pressurized food material to a plurality of dies using several positive displacement metering apparatus. The metering is provided by the energy of pressurized material itself, or, for ... | 07/16/1996 |
| 5498151 | Mixing head for molding machine A mixing head for a molding machine includes a mixing chamber into which reaction materials are injected from nozzles communicating therewith, toward a closed end of the chamber and at acute angles with respect to the longitudinal axis of the chamber, the... | 03/12/1996 |
| 5453249 | Apparatus for producing a flowable reaction mixture from at least two flowable reaction components In the production of a flowable reaction mixture of at least two flowable, also not readily miscible, reaction components which react completely with each other to form solid substance or foam material, a rapid abatement of the mixture flow is achieved wi... | 09/26/1995 |
| 5445513 | Apparatus for enhancing concentration An apparatus is disclosed for enhancing the concentration of a second material within a first material, by liquefying the first material and introducing the second material within the first material. The first and second materials are introduced into a co... | 08/29/1995 |
| 5413473 | Mechanism for mounting and dismounting mixer in an automatic noodle making machine A kneading member and a cylinder is easily mounted on and dismounted from a flour kneading unit in an automatic noodle making machine, and a mechanism for mounting and dismounting the mixer of the noodle making machine in which an assembly of the kneading... | 05/09/1995 |
| 5318431 | Process and apparatus for preparing toner particles Disclosed is an apparatus for obtaining toner particles with improved dispersion of additive components therein comprised of a toner extrusion device containing therein a blending chamber, a screw mixing means, a heating means, a toner supply means, and a... | 06/07/1994 |
| 5306132 | Process and apparatus for degassing plastic melt in a screw extruder A process and a degassing unit for the degassing of plastic melt in a screw extruder in which a surface of the degassing unit facing the screws of the extruder are heated to prevent deposition of entrained plastic particles, particularly at the corners or... | 04/26/1994 |
| 5275545 | Vacuum cast molding apparatus A vacuum cast molding apparatus includes a plurality of vacuum chambers which can be brought into communication with each other, a plurality of depressurizing devices to evacuate each of the vacuum chambers respectively, a plurality of mixing and injectin... | 01/04/1994 |
| 5266261 | Process and apparatus for the production of molded articles from hot-setting plastics of several components by low-pressure casting In the production of molded articles from hot setting plastics with several components, these components are brought together under laminar flow before mixing. An apparatus for such production has a chamber (2) positioned on the back end of a mixer (6), i... | 11/30/1993 |
| 5264261 | Fibre reinforced polymer compositions and process and apparatus for production thereof Fibrous network structures are produced within liquid polymer resins by passing the fiber-containing resin along a channel having a plurality of sets of flow modifying elements which establish a regulated succession of velocity profiles for the principal ... | 11/23/1993 |
| 5234324 | Extruder for highly foamed plastic material having a reduced diameter mixing space for introducing an inert foaming agent The present invention provides an extruder for highly foamed plastic material for coating a central conductor of a coaxial insulated cable with an insulator made of a mixture of a plastic material, preferably polyethylene, and an inert gas, such as nitrog... | 08/10/1993 |
| 5200205 | Extruder barrel temperature regulation apparatus Extruder barrel temperature control apparatus in the form of a plurality of axially spaced tubular shells positioned in end-to-end relationship on the outer surface of a tubular extruder barrel. Each of the shells includes individual resistance heater ele... | 04/06/1993 |