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"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 7037409 | Method of hot-repairing the heating flues of a coke-oven battery and device for carrying out said method A method and a device for the hot-repairing of the heating flues of a coke-oven battery according to which the completed sections of a heating flue still under construction are heated by means of a heated gas. The heated gas comprises the air usually provided for co... | 05/02/2006 |
| 6730272 | In-line gas pre-heating A process for heating fuel gas under high pressure before it is expanded. The gas is directly heated by burning part of the gas in the gas pipeline. ... | 05/04/2004 |
| 5607297 | Moving bed process for carbothermally synthesizing nonoxide ceramic powders Carbothermally reduce a metal oxide to its corresponding metal nitride or metal carbide powder in a vertical gravity flow reactor by adding precursor pellets containing the metal oxide, a thermally decomposed binder material and carbon or a source of carb... | 03/04/1997 |
| 5503551 | Rotary valve for fume incinerator A single rotary valve is designed to control feed, purge and exit flow in a multiple bed regenerative fume incinerator system thereby replacing the large number of valves heretofore used to operate such a system. The housing of the rotary valve has ports ... | 04/02/1996 |
| 5378144 | Method and apparatus for temperature uniformity and repeatable temperature and location specific emission control of kilns A method and apparatus for extracting impurities from the interior of a kiln, when in operation, and for creating a uniformly heated atmosphere within the kiln, which involves the introduction of air through an air passage opening through the top of the k... | 01/03/1995 |
| 5211555 | Melting apparatus and method A gas fired melting apparatus for particulate material. The melting apparatus has four successively connected vertically disposed sidewall members, a floor member and a roof member. These members define a cubic melting chamber for containing a freestandin... | 05/18/1993 |
| 4541799 | Preheating furnace for elongated material A preheating furnace for elongated material, particularly bars, billets, and the like of light metal has a furnace tunnel (15) formed by furnace shells (14) for preheating the material (1). At least in their central range the furnace shells are covered by... | 09/17/1985 |
| 4439145 | Aluminum furnace and preheater therefor A reverberatory furnace for melting aluminum or other metals which includes a preheater (12) which utilizes exhaust flue gasses from the furnace (10) to preheat the metal before it enters the furnace. A set of horizontal flue ducts (18, 20, 22) conduct th... | 03/27/1984 |
| 4255136 | Furnace for heat treatment of wire materials A furnace for the heat treatment of wire materials, comprising a cylindrical furnace body having holes at both ends through which a wire material is inserted into and out of the furnace body, a combustion chamber formed within the furnace body, a burner p... | 03/10/1981 |
| 4254221 | Method of burning lump-sized combustible material, and an annular shaft kiln for carrying out this method This invention deals with a method of burning crushed or lump-sized combustible material, such as limestone, dolomite, magnesite or a similar material, in an annular shaft kiln having an annular outer shaft and an inner shaft, where the annular and the in... | 03/03/1981 |
