Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7243701 | Treating molten metals by moving electric arc An apparatus (10) and a method for reducing inclusions, shrinkage blowholes, porosity and segregation in metal castings during the casting process, and for improving the grain structure, mechanical properties and yield of ingots and other castings. The appara... | 07/17/2007 |
| 6712875 | Method and apparatus for optimized mixing in a common hearth in plasma furnace A method and apparatus for optimized mixing in a common hearth in a plasma furnace. The apparatus provides a main hearth, a plurality of optional refining hearths, and a plurality of casting molds or direct molds whereby the refining hearths and molds define at leas... | 03/30/2004 |
| 6496529 | Refining and casting apparatus and method A method for refining and casting metals and metal alloys includes melting and refining a metallic material and then casting the refined molten material by a nucleated casting technique. The refined molten material is provided to the atomizing nozzle of t... | 12/17/2002 |
| 5785923 | Apparatus for continuous feed material melting The apparatus of the present invention is a melter housing having a pretreat chamber heated with a feed material heater that is partially isolated from a melter chamber. The method of the present invention has the steps of introducing feed material into a... | 07/28/1998 |
| 5263044 | Remelting method for recognition and recovery of noble metals and rare metals Method for recognition of noble metals otherwise not recognizable in base material clusters includes using an electron beam furnace in which base material clusters are vaporized by means of an electron beam gun, and the vaporized materials are condensed a... | 11/16/1993 |
| 5142549 | Remelting apparatus and method for recognition and recovery of noble metals and rare earths Apparatus for recognition of metals in base materials includes an electron beam furnace in which base materials are vaporized by means of an electron beam gun and the vaporized materials are condensed as free atoms or are alloyed with other components of ... | 08/25/1992 |
| 4112246 | Plasmarc furnace for remelting metals and alloys A plasmarc furnace for remelting metals and alloys in a controlled atmosphere, which comprises a hollow consumable electrode disposed in a crystallizer and an arc plasmatron with a nonconsumable electrode disposed above the hollow consumable electrode coa... | 09/05/1978 |
| 4105437 | Method and apparatus for recovering metals The disclosure relates to a method and apparatus for recycling, smelting, and refining waste metal material and low grade metal material. A magneto-plasma provides a high temperature for extracting metals. The magneto-plasma is comprised of an alternating... | 08/08/1978 |
| 4018973 | Furnace construction for plasma arc remelting of metal A plasma arc remelting furnace system with improved components including mechanisms for independently vertically feeding and oscillating the metal blank through the top of the furnace. Multiple plasma arc torches (plasmatrons) are installed in a sealed ch... | 04/19/1977 |
| 4017672 | Plasma-arc furnace for remelting metals and alloys A plasma-arc furnace for remelting metals and alloys comprising a chamber with openings, which accommodates therein a plasmatron including a consumable electrode with an axial through-going internal space, and a water-cooled rod of a mechanism for moving ... | 04/12/1977 |
| 3995100 | Arrangement for the production of ingots from high-melting metals, particularly steel, by electroslag remelting An arrangement for the production of ingots from high-melting metals, such as steel, by electroslag-remelting is disclosed. A water-cooled ingot mold including a bottom plate forms the solidifying ingot, the ingot being a solidifying portion and a liquid ... | 11/30/1976 |
| 3980802 | Method of arc control in plasma arc furnace torches A plasma arc remelting furnace system with improved components including mechanisms for independently vertically feeding and oscillating the metal blank through the top of the furnace. Multiple plasma arc torches (plasmatrons) are installed in a sealed ch... | 09/14/1976 |
| 3944412 | Method for recovering metals The disclosure relates to a method and apparatus for recycling, smelting, and refining waste metal material and low grade metal material. A magneto-plasma provides a high temperature for extracting metals. The magneto-plasma is comprised of an alternating... | 03/16/1976 |
