Lawrence Welk, the bandleader who entertained millions of Americans over a generation of broadcasting his TV show, once received a patent: for a music-themed design of an ashtray.
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| Number | Title | Issue Date |
| 8084717 | Reflow furnace The suction ports of a hot air blowing heater are arranged in a zigzag shape crossing the direction of travel of a printed circuit board, and hot air discharge nozzles project from inside or alongside the suction ports. Accordingly, in the reflow furnace according t... | 12/27/2011 |
| 7838802 | Radiation apparatus with capability of preventing heat convection The present invention provides a radiation apparatus with capability of preventing heat convection, which comprises a blackbody furnace having a cavity therein and an air pressure adjusting unit. The air pressure adjusting unit coupled to the blackbody furnace for a... | 11/23/2010 |
| 7423242 | Oven for non-metal melting Oven for non-metal melting, in particular silicon melting, with a housing enclosing an interior, at least one mould arranged in the interior for receiving a non-metal melt, at least one electrical heating device enclosing, at least partially, the at least one mould ... | 09/09/2008 |
| 7148450 | Portable blackbody furnace The present invention discloses a portable blackbody furnace comprising a metallic body, a cylindrical cavity with a tapered end in the metallic body, a shielding plate positioned at an open end of the cylindrical cavity, at least a first heaters positioned in the s... | 12/12/2006 |
| 7020540 | Temperature control A method and apparatus are disclosed for controlling temperature of a plant comprising plural temperature control zones, wherein an effective control parameter for a first zone for which a signal representing measured temperature is available is produced according t... | 03/28/2006 |
| 6608856 | Crucible melting furnace A crucible melting furnace has a feature it has a high thermal efficiency and that differences in temperature does not substantially occur in a molten metal within a crucible and can provide products of uniform quality. Moreover, the crucible melting furn... | 08/19/2003 |
| 6160836 | Electro-smokeless extraction/recovery system An electro-smokeless extraction/recovery system for converting shredded scrap tires to carbon black and steel and fluid discharge of oil, gas and solvent chemicals. A reaction vessel is formed with a side wall and a bottom plate. The bottom plate is provi... | 12/12/2000 |
| 6159884 | Method of annealing silicon carbide for activation of ion-implanted dopants A method and crucible for annealing SiC at high temperatures. The crucible s a vessel having a peripheral wall, at least two compartments separated by an inner wall within the peripheral wall and a lid which separates the compartments from the crucible sur... | 12/12/2000 |
| 6157004 | Electric heating or preheating furnace particularly for lining cylinders and/or for firing metal-ceramic A heating or preheating furnace for lining cylinders made of refractory material, where those cylinders are particularly designed to act as molds for the lost wax casting of precious metals, semiprecious metals, base metals or titanium or alloys thereof i... | 12/05/2000 |
| 6125658 | Glass furnace and installation comprising same The invention relates to the electric melting technique, in which the melting energy is dissipated in the bath of melted glass as a result of the Joule effect by means of electrodes which dip through the surface of the bath. According to the invention, th... | 10/03/2000 |
| 5981900 | Method of annealing silicon carbide for activation of ion-implanted dopants A method and crucible for annealing SiC at high temperatures. The crucible is a vessel having a peripheral wall, at least two compartments separated by an inner wall within the peripheral wall and a lid which separates the compartments from the crucible s... | 11/09/1999 |
| 5932294 | MBE deposition method employing effusion cell having a unibody crucible A unibody, monolithic, one-piece negative draft crucible for a MBE effusion cell. The crucible maximizes capacity, uniformity and long term flux stability, and minimizes oval defects, depletion effects, and short term shutter-related flux transients. The ... | 08/03/1999 |
| 5887015 | Heater mechanism for crystal pulling apparatus A heater mechanism for a crystal pulling apparatus is disclosed. Electrodes made of copper or the like and disposed under a heater are connected to the heater via graphite members. A cover member is attached to each graphite member, so that the downwardly... | 03/23/1999 |
| 5878074 | Evaporator crucible and improved method for performing electron-beam evaporation A crucible is disclosed for use in coating a substrate with deposition materials by electron-beam evaporation. The crucible is configured to be inserted into an evaporator pot; it has a bottom and at least one sidewall extending upwardly from the bottom a... | 03/02/1999 |
| 5865098 | Multiple container slow cooker device A multiple container slow cooker device that includes a manual disabling mechanism for manually disabling the cooking element of one of the food cooking containers and an automatic cooking element disabling mechanism for disconnecting the cooking element ... | 02/02/1999 |
| 5827371 | Unibody crucible and effusion source employing such a crucible A unibody, monolithic, one-piece negative draft crucible for an MBE effusion source. The crucible maximizes capacity, uniformity and long term flux stability, and minimizes oval defects, depletion effects, and short term shutter-related flux transients. T... | 10/27/1998 |
| 5820681 | Unibody crucible and effusion cell employing such a crucible A unibody, monolithic, one-piece negative draft crucible for a MBE effusion cell. The crucible maximizes capacity, uniformity and long term flux stability, and minimizes oval defects, depletion effects, and short term shutter-related flux transients. The ... | 10/13/1998 |
| 5792271 | System for supplying high-pressure medium gas The present invention provides a system for supplying a high-pressure medium gas suitable for processing a semiconductor to be processed by heating under isostatic pressure in a short cycle. The system includes a gas holder containing a high-pressure medium ga... | 08/11/1998 |
| 5741531 | Heating element for a pasta die and a method for extruding pasta Apparatus for increasing pasta production and for ensuring a more uniform and quality pasta product which includes heating the die face of a die by positioning on the die face an electric resistance heater.... | 04/21/1998 |
| 5660752 | Heating element and process for heating crucibles A heating element for heating crucibles, including a cylindrical hollow body which is divided by slits into meandrous segments. The corners between adjacent lateral surfaces of the meanders are rounded. Sectional transition areas are located in the vicini... | 08/26/1997 |
| 5632918 | Heat dissipating chimney for adhesive supply unit A heat dissipating chimney in an apparatus for the melting and dispensing of solid and quasi-solid materials, such as thermoplastics and hot melt adhesives, is disclosed. Air convection paths are provided which control the flow of heated air from a plural... | 05/27/1997 |
| 5519189 | Non-destructive drum heating unit A heating unit for heating a generally cylindrically-shaped drum of material to a selected safe temperature without endangering the contents of the drum due to overheating, such heating unit comprising a tub, liquid circulation components interconnected w... | 05/21/1996 |
| 5407523 | Apparatus for assembling lost foam casting patterns An apparatus for gluing together first and second pieces of a foam pattern to be used in a lost foam casting process, the apparatus comprising a frame, a glue tank adapted to contain glue, a glue platen supported by the frame for vertical movement relativ... | 04/18/1995 |
| 5373807 | Apparatus for growing multiple single crystals A method for growing multiple high-purity single crystals from a replenished melt by maintaining the purity of molten source material in the melt held in a crucible in a furnace of the type used for growing high-purity single crystals. The method includes... | 12/20/1994 |
| 5315091 | Resistively heated sample preparation apparatus An electrical resistance heated oven is used to heat a crucible to melt a sample and to simultaneously heat a casting dish into which the molten sample can be poured. The oven is cooled with the crucible and casting dish within the oven in order to prepar... | 05/24/1994 |
| 5313047 | Analytical sample preparation system An interchangeable module for supporting a receptacle into which a molten sample, prepared by a fluxer, can be poured for analysis. One module can support a resistively heated casting dish into which a molten sample can be poured and cooled to form a soli... | 05/17/1994 |
| 5239615 | System for transporting highly viscous waterproofing membrane A system for transporting liquefied, highly viscous waterproofing membrane from a kettle where the membrane is heated and stored to a remote location. The system comprises a pump assembly for pumping membrane out of the kettle, a pipe assembly coupled wit... | 08/24/1993 |
| 5093896 | System for transporting highly viscous waterproofing membrane A system for transporting liquefield, highly viscous waterproofing membrane from a kettle where the membrane is heated and stored to a remote location. The system comprises a pump assembly for pumping membrane out of a kettle, a pipe assembly coupled with... | 03/03/1992 |
| 4922082 | Thermal valve gate for plastic molding apparatus An ohmically or electrothermally controlled valve gate for injection molding apparatus comprises three concentrically located tubes in intimate contact with each other. The innermost tube is an electrode and also serves as the passage for flowing molding ... | 05/01/1990 |
| 4813470 | Casting turbine components with integral airfoils Method and apparatus for controlling radial solidification in cast turbine wheel or nozzle assembly so as to produce an equiaxed fine grain structure in a hub portion and a directionally solidified grain structure in an integral blade portion by means of ... | 03/21/1989 |
| 4723070 | Electric heater especially for machines and tools for processing of plastics A heater has two, hollow, half-cylindrical heat guides fastened to each other at one side by an articulated connector and at the other side by a bolted joint. Internal surfaces of the heat guides represent the shape of the object being heated. On external... | 02/02/1988 |
| 4505669 | Liquefying hot melt adhesive For liquefying hot melt adhesive, a hopper is provided at its lower region with one or more discrete upwards projections (for example a single, fluted cone), with means for heating the projection(s). In use, a unitary mass of hot melt adhesive is lowered ... | 03/19/1985 |
| 4386113 | Method of making a magnetic recording medium A method of making a magnetic recording medium including a step of continuously depositing a ferromagnetic layer with the use of electron beam for heating an evaporation source material. A container for retaining said source material in a heating position... | 05/31/1983 |
| 4247735 | Electric heating crucible A Joule effect electric furnace for goldsmith, dental and the like melting processes comprises a graphite crucible which constitutes by itself an electric resistance element suitable for the Joule effect heating and is connected to an electric power suppl... | 01/27/1981 |
| 4007325 | Furnace assembly An electrically heated furnace assembly, suitable for a hot isostatic press, having windings of one or more resistance heating elements, helically wound about the longitudinal axis of the furnace assembly; rigid insulating sleeves, enclosing the heating e... | 02/08/1977 |