| Patents for F23L 17 - Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues (1,376) |
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| 07/10/1990 | US4940042 System and apparatus for venting water heater |
| 07/03/1990 | CA1271101A1 Posi-draft |
| 06/19/1990 | US4934335 For venting gases from a flue through the wall of a building |
| 06/19/1990 | US4934334 Screen for protecting recreational vehicle heating system |
| 05/23/1990 | EP0369950A2 Heating installation |
| 05/22/1990 | US4926840 Pilot gas bypass system for fuel-fired furnaces |
| 05/17/1990 | CA2003114A1 Method for the combustion of liquid or gaseous fuels, device for carrying out this method and heating installation with such a device as well as an air-conditioning system with such a heating installation |
| 05/08/1990 | US4922889 Pelletized fuel burning heater |
| 05/01/1990 | US4920866 Anti back draft device for flue |
| 04/04/1990 | CN2055568U Conical-case type ventilating tool for air-return-prevented valve |
| 02/13/1990 | US4899726 Furnace inducer outlet elbow |
| 02/08/1990 | DE3826835A1 Combustion system |
| 01/16/1990 | US4893609 Wind-resistant outdoor heating appliance |
| 01/16/1990 | US4893608 Furnace roof jack with pivoting flashing plate |
| 01/10/1990 | EP0350452A2 Combustion system with air-exhaust-chimney |
| 01/02/1990 | US4890563 Treatment of waste and rotary kiln therefor |
| 11/21/1989 | CA1263065A1 Draft-assisting chamber |
| 11/08/1989 | CN2047338U Constant draught device of stack |
| 11/07/1989 | US4878480 Radiant tube fired with two bidirectional burners |
| 09/26/1989 | US4869236 Apparatus for collecting and storing grease discharged from roof mounted exhaust systems |
| 09/20/1989 | EP0333389A1 Improvements in or relating to autoclaves |
| 09/20/1989 | CN2044690U Hood-type smoke exhauster |
| 09/19/1989 | US4867106 Direct power vented water heater |
| 08/23/1989 | EP0329498A1 Device for moving air in a duct |
| 07/27/1989 | DE3839740A1 Air/waste-gas ducting for fuel-fired heat sources |
| 07/12/1989 | EP0323921A1 Gas boiler of the gas-tight type with an adjustable exhaust gas ventilator, and associated pressure switch-controlled security system |
| 07/12/1989 | CN2041014U Multipurpose water heater capable of generating superheated steam |
| 07/05/1989 | EP0322936A2 Chimney having discharge means for condensated fluid |
| 07/05/1989 | EP0322570A1 Cowl for a chimney |
| 07/05/1989 | CN2040586U Oil fume extractor |
| 06/28/1989 | CN2040225U Decentralized aspirator |
| 06/15/1989 | DE3740621A1 Top for chimneys |
| 06/01/1989 | DE3829858A1 Chimney attachment having a cover which can be pivoted upwards |
| 05/24/1989 | EP0317031A1 Horizontal double-walled flue |
| 05/18/1989 | DE3737942A1 Device for the flue-gas pipe of a gas boiler |
| 05/10/1989 | CN2037429U Boiler fan damping energy-saving device |
| 05/10/1989 | CN2037428U Stovepipe anti-wind cap |
| 02/21/1989 | US4806076 Radial upblast exhaust fan apparatus |
| 02/01/1989 | CN2031877U Draught hood for chimney of stove |
| 02/01/1989 | CN2031876U Smoke exhauster with functions of anti-backflow and combustion-supporting |
| 01/24/1989 | CA1249163A1 Wind guard device |
| 01/17/1989 | CA1248829A1 Terminal unit for a balanced flue |
| 01/05/1989 | DE3820872A1 Exhaust-air sleeve for ventilated chimneys |
| 01/04/1989 | EP0298042A2 Chimney cowl |
| 01/03/1989 | CA1248005A1 Device for evacuating into the ambient air combustion products from a condensation boiler |
| 12/27/1988 | US4793322 Direct-vented gas fireplace |
| 12/21/1988 | EP0296125A2 Covering element for chimney, and associated cowl |
| 12/13/1988 | US4790268 Submersible chamber water heater |
| 12/08/1988 | DE3716000A1 Heating unit |
| 12/07/1988 | EP0294336A2 Chimney cowl |
| 11/30/1988 | EP0293332A2 Chimney cowl |
| 11/17/1988 | EP0290488A1 Treatment of waste and a rotary kiln therefor. |
| 11/17/1988 | DE3715028A1 Chimney hood |
| 11/09/1988 | EP0290390A1 Chimney pot |
| 11/02/1988 | EP0221941B1 Chimney cap |
| 10/18/1988 | US4777871 Chimney tile adapter plate |
| 10/04/1988 | US4774931 Safety heater |
| 09/21/1988 | CN87216470U Smoke pump |
| 09/15/1988 | DE3706864A1 Device, plant and method for removing pollutants from flue gases |
| 09/07/1988 | WO1988006702A1 A ventilation and heat recovering system for plural room buildings |
| 09/07/1988 | CN88203283U Domestic dranght fan |
| 09/07/1988 | CN88200744U Wind fume extractor |
| 09/07/1988 | CN87210308U Induced air type burning-rate apparatus |
| 09/06/1988 | US4768444 Common vent device for positive vent pressure and draft hood equipped gas appliances |
| 08/23/1988 | US4765308 Venting system with natural convection cooling |
| 08/04/1988 | DE3725898A1 Connection device for fire tubes, for draught activation and for air exchange in boiler rooms |
| 07/26/1988 | US4759272 Ventilator |
| 07/20/1988 | EP0274472A1 Regenerative furnace heating method and apparatus |
| 07/20/1988 | CN87210200U Augmentor for exhausting fume from chimney neck |
| 07/19/1988 | US4757802 For connection to an appliance vent system |
| 07/13/1988 | CN87203479U Suction draught machine for civilian use |
| 06/29/1988 | CN87215990U Pneumatic domestic combustion-supporting apparatus |
| 06/29/1988 | CN87107033A Treatment of waste and rotary kiln therefor |
| 06/16/1988 | DE3641351A1 Chimney head |
| 06/14/1988 | US4750433 In-line power venter |
| 05/31/1988 | US4747771 Operation of a pulse-fired burner |
| 05/25/1988 | EP0268407A2 Direct-vented gas fireplace |
| 05/19/1988 | WO1988001198A3 Process and device for optimising energy output in heating installations, reducing the pollutants generated and cleaning flue gases |
| 05/18/1988 | EP0267330A1 Operation of a pulse fired burner |
| 05/10/1988 | US4742800 Submersible chamber water heater |
| 04/27/1988 | CN87202092U Household smoke hood and stovepipe ventilator |
| 04/27/1988 | CN87200718U Simplified air exfractor for cook stove |
| 04/07/1988 | WO1988002284A1 Treatment of waste and a rotary kiln therefor |
| 03/15/1988 | US4730598 Draft-assisting chamber |
| 02/25/1988 | WO1988001198A2 Process and device for optimising energy output in heating installations, reducing the pollutants generated and cleaning flue gases |
| 02/23/1988 | CA1233107A1 Apparatus and method to add kinetic energy to a low pressure waste gas flare burner |
| 02/18/1988 | DE3627914A1 Vorrichtung und verfahren zur optimalen energieausbeute bei heizungsanlagen, verringerung der schadstofferzeugung und zur abgasreinigung Apparatus and method for optimal energy yield in heating systems, thinning of the pollutant generation and emission control |
| 01/19/1988 | CA1231604A1 Apparatus for heating water |
| 12/30/1987 | CN87207575U New type hood for excluding lampblack and vapour from kitchen |
| 12/15/1987 | US4712515 Device for evacuating into the ambient air combustion products from a condensation boiler |
| 11/11/1987 | CN86206692U Combustion adjusting device |
| 11/04/1987 | EP0164393B1 Wind guard device |
| 10/06/1987 | CA1227686A1 Automatic damper for chimney flue |
| 09/01/1987 | US4690129 Terminal unit for a balanced flue |
| 08/25/1987 | US4688473 Wind guard device |
| 08/11/1987 | US4685425 Submersible chamber water heater |
| 07/02/1987 | DE3703844A1 Chimney flue-gas extractor |
| 06/16/1987 | US4672919 Direct power vented water heater |
| 05/27/1987 | DE3348051C2 Outer-wall box for the combustion-air and waste-gas duct of an apparatus operating with a burner system |
| 05/21/1987 | WO1987003080A1 Regenerative furnace heating method and apparatus |