| Patents for F27D 7 - Forming, maintaining, or circulating atmospheres in heating chambers (2,811) |
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| 03/09/1982 | US4318690 Venting process for organic heat transfer media |
| 03/02/1982 | US4317290 Heat treatment apparatus |
| 02/16/1982 | US4315486 Floating radiant tube sheets for vertical tube reformers and the like |
| 01/05/1982 | US4308805 High temperature damper |
| 12/22/1981 | CA1114872A1 Gas tight seal for electrodes in smelting furnaces |
| 11/24/1981 | CA1112966A2 Recirculating processing oven heater |
| 11/10/1981 | US4299566 Metal preheat conveyor with improved air flow properties |
| 11/10/1981 | US4299565 Heating furnace |
| 10/13/1981 | US4294436 Furnace with protective atmosphere for heating metals |
| 09/22/1981 | CA1109513A1 Atmospheric control of flux pre-melting furnace |
| 09/15/1981 | CA1108851A1 Vacuum furnace with cooling means |
| 09/08/1981 | US4288194 Raw material distributing apparatus for a furnace |
| 09/08/1981 | CA1108400A1 Tuyere for blowing gas into molten metal |
| 09/08/1981 | CA1108398A1 Jet recirculation method for vacuum carburizing |
| 09/08/1981 | CA1108397A1 Furnace with radiant burndown tube |
| 08/20/1981 | WO1981002339A1 Atmosphere controlled electric melting |
| 08/20/1981 | WO1981002309A1 Furnace for heating articles |
| 08/19/1981 | EP0034109A1 Atmosphere controlled electric melting furnace |
| 08/18/1981 | CA1107080A1 Submerged injection of gas into liquid pyro- metallurgical bath |
| 07/21/1981 | CA1105254A1 Heating assembly for a heat treating furnace |
| 05/12/1981 | US4266932 Heating furnace |
| 05/12/1981 | US4266931 Apparatus and method of heating particulate material |
| 04/07/1981 | US4260371 Modular heat exchange apparatus |
| 03/03/1981 | CA1096612A1 Method of setting and controlling desired redox potentials in gases |
| 02/24/1981 | US4252521 Furnace for the heat treatment of lumpy to fine grained material |
| 02/24/1981 | CA1096430A1 Continuous charging apparatus |
| 02/17/1981 | US4251271 Submerged injection of gas into liquid-pyrometallurgical bath |
| 01/27/1981 | US4246957 Autoclave furnace with cooling system |
| 01/20/1981 | US4246434 Work support for vacuum electric furnaces |
| 01/20/1981 | US4246216 Method for manufacturing a gas delivery device |
| 01/20/1981 | US4245943 Unloading apparatus for vacuum electric furnaces |
| 01/13/1981 | US4244686 Energy saving furnace and method of operating same |
| 01/07/1981 | EP0022018A1 Process and plant for the production of coke or semi-coke |
| 12/16/1980 | CA1091518A1 Process heater |
| 12/09/1980 | US4238634 Gas tight seal for electrodes in smelting furnaces |
| 12/09/1980 | US4238186 Methods and apparatus for heating articles selectively exposed to a generated vapor through a volume controllable vapor barrier |
| 11/25/1980 | US4235830 Flue pressure control for tunnel kilns |
| 11/25/1980 | US4235591 Continuous flow oven |
| 11/04/1980 | CA1088747A1 Preheating furnace |
| 10/21/1980 | US4229163 Heating furnace |
| 10/21/1980 | CA1088180A1 Method of, and control means for independently adjusting the full mixture composition and melting rate of multiburner shaft furnaces for melting metals |
| 10/15/1980 | EP0017440A1 Heated chambers provided with sealing means for openings therein and method of sealing them |
| 08/26/1980 | US4219328 Retorts, nondeforming |
| 08/26/1980 | US4219325 Axial flow reversible fan for a heat treating furnace |
| 08/26/1980 | US4219324 Process for treating metals using recycled gases |
| 08/26/1980 | CA1084392A1 Methods for carburizing steel parts |
| 08/19/1980 | CA1083813A2 Means and method for processing cement raw materials containing fuel of high volatile content |
| 08/12/1980 | US4217091 Oven process with solvent free exhaust |
| 07/29/1980 | US4214869 Furnace with radiant burndown tube |
| 06/17/1980 | US4208572 Oven |
| 06/10/1980 | US4207065 Device for heating open melting baths, such as galvanizing baths, enameling baths, lead coating baths, metallic baths, glass baths, and the like |
| 06/10/1980 | US4206553 Method of curing strip coating |
| 05/13/1980 | US4202997 Atmospheric control of flux pre-melting furnace |
| 05/13/1980 | US4202690 Setting and controlling desired redox potentials in gases |
| 05/13/1980 | US4202661 Jet implement radiation furnace, method and apparatus |
| 04/22/1980 | US4198764 Radiant heating apparatus for curing coated strip material |
| 04/01/1980 | CA1074555A1 Facility for the continuous thermal treatment of a product resting in an enclosed space |
| 03/19/1980 | EP0008667A1 Furnace for the thermal treatment of granular or fine sized material |
| 03/18/1980 | US4193757 Furnace construction and methods of loading and sealing a combustion chamber therein |
| 03/04/1980 | US4191598 Jet recirculation method for vacuum carburizing |
| 03/04/1980 | US4191525 Aspiration circulation system and method |
| 03/04/1980 | CA1072823A1 Jet impingement radiation furnace, method and apparatus |
| 01/01/1980 | US4181491 Method and apparatus for heating a furnace chamber |
| 12/25/1979 | US4180019 Process heater |
| 12/18/1979 | US4179103 Means for injecting gas into a molten metal |
| 11/20/1979 | US4174951 Furnace heating system |
| 10/16/1979 | US4171126 Vacuum furnace with cooling means |
| 09/04/1979 | CA1061547A1 Method and apparatus for heating a furnace chamber |
| 07/24/1979 | CA1058885A1 Process for preventing the oxidation of liquid zinc |
| 07/24/1979 | CA1058866A1 Apparatus for continuous vacuum-refining of metals |
| 07/10/1979 | US4160869 Continuous charging apparatus |
| 06/05/1979 | CA1055694A1 Cylindrical elongated furnace for heat treating material |
| 05/22/1979 | US4155704 Apparatus for feeding a mixture of steam, gas and air into a rotary kiln under the layer of the material processed |
| 05/15/1979 | US4154433 Continuous atmosphere controlled furnaces |
| 05/08/1979 | US4153236 Preheating furnace |
| 04/24/1979 | CA1052994A1 Convection oven and method of drying solvents |
| 04/17/1979 | US4149939 Method and apparatus for feeding an oxidant within a furnace enclosure |
| 04/10/1979 | US4148601 Flexible cam system for actuating mechanisms mounted on a revolving assembly |
| 04/03/1979 | CA1051655A1 Oven system |
| 03/13/1979 | CA1050265A1 Apparatus for injection of hot reducing gas into a shaft |
| 02/27/1979 | US4141539 Heat treating furnace with load control for fan motor |
| 02/20/1979 | US4140467 Convection oven and method of drying solvents |
| 01/16/1979 | US4135053 Heating assembly for a heat treating furnace |
| 11/14/1978 | US4125365 Roll through billet heater |
| 10/31/1978 | US4122611 Apparatus for the continuous thermal treatment of a product moving through an enclosed space |
| 09/26/1978 | CA1039066A1 Heating process and apparatus using oxygen |
| 08/22/1978 | US4108594 Method for fuel/air feed pressure control by stack temperature |
| 08/08/1978 | US4105779 Anthelmintic process for domestic animals |
| 06/13/1978 | US4094631 Multiple outlet blower scroll for an industrial oven |
| 06/13/1978 | US4094627 Oven system |
| 05/23/1978 | US4090842 Support for reduction kiln gas-on system independently of firing hood |
| 04/25/1978 | US4086050 Method and apparatus for gas circulation in a heat treating furnace |
| 04/11/1978 | US4083677 Method and apparatus for heating a furnace chamber |
| 03/21/1978 | US4079921 Apparatus and method for continuous treatment of metal coils or the like |
| 03/14/1978 | US4079105 Filling with sand, compaction, evaporation of water through drains |
| 01/24/1978 | US4070149 Controllable distribution system for rotary kiln |
| 12/27/1977 | US4065250 Method of independently adjusting the fuel mixture composition and melting rate of multiburner shaft furnaces for melting metals |
| 11/29/1977 | US4060380 Furnace having burners supplied with heated air |
| 09/27/1977 | US4050883 Apparatus and methods for the heat treatment of fine-grained materials |
| 09/20/1977 | US4049473 Methods for carburizing steel parts |