| Patents for F27B 9 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity (7,954) |
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| 05/29/1991 | CN2077977U Porcelian pipe driving element for brick kiln |
| 05/29/1991 | CN2077976U Continual casting blank thermo-loading hot-keeping furnace |
| 05/29/1991 | CN1012685B Method for forming black oxidized film on the surface of a sheet metal |
| 05/21/1991 | US5017131 Atmosphere furnace |
| 05/21/1991 | US5016610 Radiant tube type heater |
| 05/15/1991 | EP0426991A1 Process for drying and sintering of ceramics, for example ferrites or similar, and furnace for this process |
| 05/15/1991 | EP0426799A1 Continuous furnace |
| 05/09/1991 | WO1991013039A1 Method of firing ceramic building materials |
| 05/08/1991 | EP0425998A1 Blow-back barrier |
| 05/08/1991 | EP0425558A1 Method for cooling ceramics, especially ceramic tiles produced in roller kilns, and the relative plant |
| 05/01/1991 | CN2076223U Conveyer belt for furnace |
| 05/01/1991 | CN2076222U Travelling furnace for producing sintered material |
| 04/30/1991 | US5011668 Reducing the proportion of insoluble anhydrite formed by reducing temperature of hot gas |
| 04/28/1991 | CA2026798A1 Blowback barrier |
| 04/25/1991 | DE4023432A1 Tunnel kiln - with heat exchangers for preheating gas circuit fed by hot gases from cooling zone |
| 04/25/1991 | DE4003728C1 Uneven rotation detector for transport rollers in tunnel furnace - has measuring units for devices assigned to rollers to deliver magnetic, EM, acoustic or optical signals |
| 04/25/1991 | DE3934705A1 Tunnel kiln - with two counterflow tracks and specified extraction and alternate injection of hot gas |
| 04/17/1991 | EP0422607A1 Furnace for baking coating powder |
| 04/16/1991 | US5007826 Roller hearth furnace for the heat treating of metal and ceramic parts |
| 04/16/1991 | US5007824 Skid mark erasure system |
| 04/09/1991 | US5006063 Continuous furnace for the heat treatment of articles, more particularly ceramic pipes |
| 04/09/1991 | US5005635 Refractory elements for the construction of heat regenerators |
| 03/28/1991 | DE3931301A1 Tunnel furnace - has channel slits in the base for chain mounted pedestals to range through and carry the workpieces for firing |
| 03/27/1991 | EP0419300A2 Roller with conical shank |
| 03/26/1991 | US5003160 Reflow furnace control system |
| 03/26/1991 | US5002696 Nonporous, density stable in liquid systems |
| 03/26/1991 | US5002009 Furnace for formation of black oxide film on the surface of thin metal sheet and method for formation of black oxide film on the surface of shadow mask material by use of said furnace |
| 03/19/1991 | US5000655 Installation for manufacture of ceramic products |
| 03/19/1991 | US5000158 Staged burning radiant tube |
| 03/19/1991 | CA1281545C Treatment of expansible materials to form lightweight aggregate |
| 03/13/1991 | CN2073099U Resistance furnace with variable power and high efficiency energy-saving box |
| 03/13/1991 | CN1049904A Roller bed kiln using coal as fuel |
| 03/12/1991 | US4999166 Enamelled Copper Wire |
| 03/06/1991 | EP0415611A1 Method for detecting roller breakdowns in roller hearth kiln systems |
| 03/05/1991 | US4997077 Method and apparatus for the positioning of slabs |
| 02/20/1991 | EP0413169A1 Production line for making steel plate |
| 02/18/1991 | CA2023431A1 Method for purifying low molecular weight compounds of peptide or pseudo-peptide structure |
| 02/13/1991 | CN2071319U Double platform trolley resistance furnace with preheater |
| 02/13/1991 | CN2071317U Outer heating rotary kiln for magnetic material sintering |
| 02/07/1991 | WO1991001459A1 Ceramic conveyor belt connector rod end fixation |
| 02/05/1991 | US4990086 System for under-cart cooling of furnace carts in tunnel furnaces |
| 01/29/1991 | US4988289 Reaction furnace |
| 01/24/1991 | DE3923887A1 Tunnel furnace for firing ceramics - with decomposition toxic gases withdrawn and reheated to ensure complete burning before being exhausted to atmos. |
| 01/22/1991 | US4986967 Controlled flow of reactive and effluent gases |
| 01/22/1991 | US4986750 Furnace |
| 01/16/1991 | CN1011261B Method and apparatus for heating mineral fibers |
| 01/09/1991 | EP0407073A2 Material treatment |
| 01/09/1991 | EP0406954A1 Kiln in particular for producing litharge by means of the calcination of massicot |
| 01/09/1991 | CN2069096U Mechanized transfer apparatus for thermal treatment of steel spades |
| 01/08/1991 | US4983202 Glass sheet heating furnace and method of using |
| 01/08/1991 | US4982936 Furnace |
| 01/08/1991 | US4982934 Reheating, holding and accumulation furnace for steelworks products |
| 01/06/1991 | CA2020294A1 Kiln in particular for producing litharge by means of the calcination of massicot |
| 01/02/1991 | EP0404864A1 Energy conserving process for calcining clay. |
| 12/27/1990 | WO1990014184A3 Continuous furnace |
| 12/25/1990 | US4979895 Shield |
| 12/25/1990 | US4979314 Method of controlling the temperature in a tunnel which is open at both ends, and apparatus for implementing the method |
| 12/18/1990 | US4978836 Continuous oven |
| 12/18/1990 | US4978294 External heating rotary furnace |
| 12/13/1990 | WO1990015297A1 Forge tunnel-furnace with unit load chain conveyor |
| 12/12/1990 | EP0402305A1 Tunnel kiln |
| 12/12/1990 | EP0290488A4 Treatment of waste and a rotary kiln therefor |
| 12/05/1990 | EP0400351A1 Process and device for firing tubes, especially ceramic tubes, preferably externally glazed drainage pipes having sleeves |
| 12/05/1990 | EP0400348A1 Temperature-maintaining furnace for metallurgic products |
| 12/05/1990 | EP0400329A2 Process and apparatus for making large sized porous elements having low density through swelling |
| 12/04/1990 | US4975048 Heating apparatus |
| 12/04/1990 | US4974334 Gas flow through vibrating atea |
| 12/04/1990 | CA1277214C Heat treatment process, hood used in said process, and role of the latter in heat treating ovens |
| 11/29/1990 | WO1990014184A2 Continuous furnace |
| 11/27/1990 | US4973349 Chamber for the thermal treatment of objects |
| 11/27/1990 | US4973244 Heating system in the manufacture of printed circuit boards, assemblies and the like |
| 11/27/1990 | US4973243 Heating system in the manufacture of printed circuit boards, assemblies and the like |
| 11/27/1990 | CA2014406A1 Process and apparatus for the manufacture of large-size porous shaped bodies of low density by swelling |
| 11/22/1990 | EP0398105A2 Tunnel furnace |
| 11/22/1990 | EP0398104A1 Continuous furnace |
| 11/22/1990 | DE3916181A1 Tunnel oven with pyrometers for workpiece heat treatment - has self-adjusting temp. gradient maintained by process computer across heating zone followed by cooling tunnel |
| 11/22/1990 | DE3916043A1 Rotary soil-decontaminating furnace - is annular with metal surface and adjacent loading and discharging point |
| 11/20/1990 | CA1276435C Product drying and cooking installations |
| 11/13/1990 | US4969818 Truck for firing furnace |
| 11/06/1990 | US4968546 Carbon fibers, heat resistance |
| 10/31/1990 | EP0394616A2 Process for operating a continuous furnace |
| 10/31/1990 | DE3913585A1 Heat treatment system for soldering circuit boards - has boards transferred by continuous feeding in cassettes through heating system |
| 10/30/1990 | US4966547 Heat treatment method using a zoned tunnel furnace |
| 10/24/1990 | EP0393292A1 Device to support rolls in a roller conveyor furnace |
| 10/23/1990 | US4964799 Heating furnaces |
| 10/18/1990 | DE3941074A1 Highly automated firing plant - used for firing glazed stoneware pipes |
| 10/09/1990 | US4961683 Device for aligning and lifting blocks in kiln cars |
| 10/04/1990 | WO1990011482A1 Process and device for processing monofilaments |
| 10/04/1990 | DE3910613A1 Tunnel furnace (kiln) |
| 10/04/1990 | DE3910588A1 Tunnel furnace (kiln) |
| 10/03/1990 | EP0390231A2 Apparatus and process for generating radiant energy |
| 10/03/1990 | CN2063216U Ring turnover device for brick-kiln with rails |
| 09/19/1990 | EP0388333A1 Apparatus for performing sequences of continous heat treatments in vacuum |
| 09/19/1990 | EP0388206A1 Apparatus for driving rollers in roller hearth kiln |
| 09/18/1990 | US4957532 Glass-treating furnace with roller conveyor |
| 09/18/1990 | US4957374 Tunnel furnace height detector |
| 09/11/1990 | US4956849 Continuous |
| 09/11/1990 | US4956271 Material treatment |
| 08/28/1990 | US4951401 Solder reflow apparatus |
| 08/22/1990 | EP0383687A1 Radiant tube system for heating furnaces |