| Patents for F23L 13 - Construction of valves or dampers for controlling air supply or draught (771) |
|---|
| 05/16/1989 | CA1254089A1 Chimney damper |
| 04/25/1989 | US4823836 Dampers with leaf spring seals |
| 04/19/1989 | CN2036265U Flactuation-blasting cement sintering kiln |
| 03/01/1989 | CN1031411A Combustion apparatus with atomizer, and method of controlling same |
| 02/15/1989 | EP0303559A2 Circulation of combustion air to the burner of a burner appliance, for instance of a water heater |
| 02/14/1989 | US4803931 Flue restrictor |
| 01/25/1989 | CN2031489U Pulse wind lock |
| 01/11/1989 | EP0298946A2 Device for controlling fume-withdrawal, particularly from gas- or oil-fired boilers |
| 01/03/1989 | CA1298749B Flue Restrictor |
| 01/03/1989 | CA1247956A1 Flue restrictor |
| 08/17/1988 | CN87215984U Automatic cover of a household honeycomb briquet stove |
| 08/11/1988 | DE3702683A1 Recuperator-heat exchanger with mass-transfer, mass-separation facility in crossflow, parallel flow and counterflow |
| 08/09/1988 | CA1240221A1 Apparatus for regulating and cleaning an air passage in the wall of a furnace |
| 05/31/1988 | CA1237351A1 Positive opening damper for combustion appliance |
| 02/16/1988 | US4724863 Flue gas seal |
| 12/15/1987 | US4712491 Process and apparatus for the controlled burning of a vertical stack of solid fuel |
| 10/27/1987 | US4702692 Air reduction control for oil-treating vessels |
| 10/03/1987 | CN86201801U Acting-period controlling valve of secondary blast of a steam locomotive boiler |
| 09/29/1987 | CA1227375A1 Air inlet valve subassembly with replaceable seal |
| 07/07/1987 | CA1223789A1 Refractory stove damper with catalytic effects |
| 05/27/1987 | EP0130211B1 Non-return valve for pulsating burners |
| 04/23/1987 | DE3617510A1 Boiler installation with an air throttle flap |
| 03/31/1987 | US4653409 Apparatus for regulating and cleaning an air passage in the wall of a furnace |
| 03/03/1987 | US4646715 Extension apparatus for damper control shaft |
| 01/31/1987 | CN86102140A Steam locomotive boiler automatic control ventilating system |
| 01/13/1987 | US4635899 Air inlet valve subassembly with replaceable seal |
| 01/08/1987 | DE3522669A1 Draught regulator |
| 01/07/1987 | CN86101094A Apparatus for regulating and cleaning an air passage in the wall of a furnace |
| 10/28/1986 | US4619602 Fail safe automatic flue damper mechanism |
| 09/10/1986 | EP0193632A1 Method of controlled burning of a pile of solid fuel particularly of wood piled up in a vertical fire stack of a stove as well as stove for carrying out the method |
| 09/09/1986 | US4610197 Damper blade construction |
| 09/02/1986 | CA1210648A1 Secondary air control damper arrangement |
| 08/27/1986 | EP0192382A2 Apparatus for regulating and cleaning an air passage in the wall of a furnace |
| 08/19/1986 | US4606282 Self feeding wood burning stove |
| 06/17/1986 | CA1206086A1 Automatic air inlet damper |
| 05/07/1986 | EP0061469B1 Isolation damper |
| 03/10/1986 | CN85100558A Means of impulsive blast for fluid-bed and impulsive blast valve |
| 02/04/1986 | US4568268 Burner with variable secondary air controller |
| 11/26/1985 | US4554863 Chimney damper |
| 10/15/1985 | CA1195195A1 Damper |
| 10/01/1985 | US4543941 Valve for furnace stack pipe |
| 08/28/1985 | EP0056374B1 Guillotine damper |
| 07/23/1985 | US4530346 Mechanical thermostat having proportional control for a solid fuel-burning stove |
| 07/02/1985 | US4526160 Apparatus for controlling flow of combustion products |
| 06/25/1985 | CA1189407A1 Fail safe automatic flue damper mechanism |
| 05/22/1985 | EP0141944A1 Regulating device for chimney draught |
| 04/09/1985 | US4509499 Energy efficient damper for a furnace |
| 04/09/1985 | US4509498 For a fireplace |
| 01/15/1985 | US4493342 Double louver damper |
| 01/15/1985 | US4493311 Guillotine damper |
| 12/04/1984 | US4485841 Pollution control device |
| 11/27/1984 | US4484562 Flexible disk damper |
| 11/13/1984 | US4482291 Automatic air inlet damper |
| 11/06/1984 | US4480558 Adjustable air inlet control system |
| 10/30/1984 | US4479483 Safety stovepipe damper assembly |
| 10/17/1984 | EP0122221A1 Heating device |
| 10/09/1984 | CA1175721A1 Valve for furnace stack pipe |
| 09/19/1984 | EP0118714A2 Secondary air control damper arrangement |
| 09/11/1984 | US4470401 Valve for furnace stack pipe |
| 08/21/1984 | US4466340 Chimney assembly |
| 07/19/1984 | WO1984002762A1 Non-return valve for pulsating burners |
| 07/03/1984 | US4457294 For controlling the flow rate of a combustion air stream |
| 06/27/1984 | EP0111576A1 Cut-off valve for hot gas, in particular flue gas |
| 05/30/1984 | EP0109620A2 Fuel heated heat source |
| 05/22/1984 | US4449512 Energy efficient damper for a furnace |
| 05/08/1984 | US4446847 Fireplace outside air inlet |
| 04/24/1984 | CA1166104A1 Inlet air control for stove or furnace |
| 04/17/1984 | US4443181 In a furnace |
| 03/20/1984 | CA1163853A2 Air control mechanism having noise suppression means |
| 01/17/1984 | US4425855 Secondary air control damper arrangement |
| 12/27/1983 | US4422440 Automatic draft controller |
| 11/24/1983 | WO1983004069A1 Improved automatic air inlet damper |
| 11/22/1983 | US4416253 Apparatus for controlling flow of combustion products |
| 11/16/1983 | EP0093816A1 Programme apparatus with a combustion-air damper for operating boiler burners |
| 11/08/1983 | US4413613 Sleeve damper apparatus |
| 10/25/1983 | CA1155823A1 Isolation damper |
| 10/18/1983 | US4409956 Thermostat for stoves |
| 08/17/1983 | EP0085925A2 Burner with variable air controller |
| 08/16/1983 | US4398697 Pivotal flap |
| 07/19/1983 | US4393814 Multi-fueled boiler |
| 06/28/1983 | US4390123 Thermally activated, automatic, single blade damper and damper operator |
| 06/14/1983 | US4387700 Woodstove having exhaust flow compensation and a method for providing same |
| 05/24/1983 | US4384672 Draft limiting device |
| 04/26/1983 | US4380992 Burner, especially for a flambe portable stove or the like |
| 02/08/1983 | US4372485 Thermally activated, automatic damper and damper operator |
| 02/08/1983 | US4372289 Flue box assembly |
| 02/08/1983 | CA1140734A1 Fire preventive filter for chimneys and the like |
| 02/01/1983 | CA1140387A1 System for controlling the flow of gaseous fluids |
| 01/25/1983 | US4369718 Shut-off system for flue gas conduits or air intake conduits in oil and gas fire systems |
| 01/14/1983 | EP0061469A4 Isolation damper. |
| 12/28/1982 | USRE31112 Automatic flue damper |
| 10/26/1982 | CA1134229A1 Flue box assembly |
| 10/06/1982 | EP0061469A1 Isolation damper. |
| 09/07/1982 | US4347832 Controlled air intake apparatus for furnaces and the like |
| 08/31/1982 | CA1130656A1 Vent control arrangement for combustion apparatus |
| 08/17/1982 | CA1129742A1 Thermal damper assembly having position controls |
| 07/27/1982 | US4341344 Automatic draft controller |
| 06/01/1982 | US4332271 Throttling device for pipe conduits |
| 05/18/1982 | US4329967 Adjustable flue control for furnaces |
| 05/04/1982 | US4327893 Guillotine damper |