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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 |
| 4664618 | Recuperative furnace wall The present invention relates to a method and apparatus for waste heat recovery and reduction in industrial furnaces and heating equipment. The method of heat recovery comprises directing the exhaust gases through a system of channels inside the refractor... | 05/12/1987 |
| 4660540 | Baking oven with hot-air circulation heating A baking oven comprising a hot-air circulating heating system by which hot air is heated and circulated through a baking chamber from a heating and circulating device arranged above the baking chamber. The heated air contacts the articles to be baked whic... | 04/28/1987 |
| 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 |
| 4384850 | Recirculating air heater A recirculating air heater for an oven is fired by a burner and connected with the oven by a return air duct and an outlet duct. The return air duct has two sets of louvers for admitting controlled amounts of return air to a combustion chamber and a burne... | 05/24/1983 |
| 4264300 | Glassmaking tank furnace A glassmaking tank furnace which comprises a basin, a heating system, a housing which includes a roof and a gas flue, a cooling system, a feed port and a discharging port. The bottom and walls of the basin and at least a part of the housing formed with th... | 04/28/1981 |
| 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 |
| 4238187 | Waste heat recovery system A heat recovery system for use with a rotatable cylindrical kiln having a curved sidewall surface and which is adapted to be fired, for example, by a burner supplied through a fuel supply line with fuel oil, comprises, at least one segment member which ov... | 12/09/1980 |
| 4229163 | Heating furnace A heating furnace, suitable for use in a continuous steel slab heating furnace, wherein slabs are heated by fuel combustion flames. Heat transfer converters each made of a heat-resistant material are disposed within and in the flow of the combustion flame... | 10/21/1980 |
| 4190497 | Apparatus for heating up a chamber of a coking battery After replacement of the walls of one chamber of a coking battery this one chamber is heated up by withdrawing relatively hot air from another still-hot chamber of the coking battery and injecting it into the cold chamber. This is done by means of a condu... | 02/26/1980 |
| 4137645 | Laundry dryer A laundry dryer structured to recirculate and reheat a portion of the warm exhaust air, and admix same with newly heated make-up air. A novel hot air compartment positioned within the dryer's housing includes a heat transfer air duct disposed immediately ... | 02/06/1979 |
| 4111756 | Method of and apparatus for heating up a chamber of a coking battery After replacement of the walls of one chamber of a coking battery this one chamber is heated up by withdrawing relatively hot air from another still-hot chamber of the coking battery and injecting it into the cold chamber. This is done by means of a condu... | 09/05/1978 |
| 4111644 | Rotary hearth furnace with preheat conveyor Rotary furnace and preheater structure, wherein a billet is heated on an enclosed preheat conveyor where waste gases from the rotary hearth furnace preheat the billet counter to the billet travel direction. The preheated billet is inserted into the rotary... | 09/05/1978 |
| 4032288 | Roofing shingle mineral filler heater A mineral filler heater assembly for heating mineral filler by directing hot discharge gases from a regenerating system or a thermal oxidizer in heat exchange relation to the mineral filler, and including fluid fuel burners connected to maintain the tempe... | 06/28/1977 |
