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| Number | Title | Issue Date |
| 6693263 | Convection type brazing apparatus for metal workpieces The invention provides a convection type brazing apparatus for metal workpieces such as aluminum, copper, iron and so forth that enables uniform heating of the metal workpieces to prevent deformation of the workpieces and can shorten a heating time to ach... | 02/17/2004 |
| 5118286 | Closed loop method and apparatus for preventing exhausted reactant gas from mixing with ambient air and enhancing repeatability of reaction gas results on wafers Mixing of spent reactant gases with ambient air inside a semiconductor wafer fabrication facility is avoided and consequently corrosion of a scavenger box in a wafer fabrication facility is avoided. Repeatability of reaction gas results on wafers in a pro... | 06/02/1992 |
| 4687438 | Shaft melting furnace for melting metals A shaft melting furnace for melting metals is proposed with an interior receiving the molten bath, a charging shaft for supplying the melting stock and a burner supplying heat to the latter. The charging shaft is funnel-shaped and passes into a melting zo... | 08/18/1987 |
| 4681535 | Preheating mechanism for source metal for melt A preheating mechanism for preheating a source metal for melt includes a combination of independent combustion and preheating devices. The mechanism also includes a high-temperature gas conduit for connecting the combustion device and the preheating devic... | 07/21/1987 |
| 4666402 | Method and apparatus for preheating scrap in a bucket A method and a device for scrap preheating by means of hot steel furnace exhaust gases. A scrap bucket permits passage of gaseous medium therethrough and is closed by a cover with an exterior waterseal by providing an intermediate annular space having a c... | 05/19/1987 |
| 4537572 | Assembly for positioning a thermogravimetric furnace An apparatus for positioning a thermogravimetric furnace includes a furnace mounting bracket which is rotatable about and linearly translatable along a single axis. In addition, simultaneous rotational and linearly movement of the furnace is excluded.... | 08/27/1985 |
| 4282185 | Chlorine and iron oxide from ferric chloride - apparatus An improved industrial multistage recirculating-fluidized-bed reactor for producing chlorine and iron oxide having an initial "dense" zone and a downstream "dilute" zone. In the dense zone, a fuel is burned, reactants and recirculated iron oxide particles... | 08/04/1981 |
| 4038155 | Energy saving vapor degreasing apparatus The environment of the invention comprises work degreasing apparatus wherein a tank contains liquid solvent to be vaporized by a heater for degreasing contact with work introduced into the tank, the vapor being subject to condensation, there also being a ... | 07/26/1977 |
| 3982882 | Method and apparatus for preparing test specimens subjected to different heat treatments A furnace for preparing test specimens, such as specimens of ceramic materials, is provided, such furnace including a furnace chamber having a heating zone; heating means for heating the heating zone; first specimen support means disposed in the heating z... | 09/28/1976 |
