Patents
Sitemap › F23 - Combustion apparatus; Combustion processes › F23L - Supplying air or non-combustible liquids or gases to combustion apparatus in general; Valves or dampers specially adapted for controlling air supply or draught in combustion apparatus; Inducing draught in combustion apparatus; Tops for chimneys or ventilating shafts; Terminals for flues › F23L 13 - Construction of valves or dampers for controlling air supply or draught
Patents for F23L 13 - Construction of valves or dampers for controlling air supply or draught (771)
04/1982
04/29/1982WO1982001409A1 System for controlling the flow of gaseous fluids
04/20/1982CA1122073A1 Automatic damper for furnace vent pipe
04/15/1982WO1982001234A1 Isolation damper
04/14/1982EP0049302A1 System for controlling the flow of gaseous fluids
03/1982
03/02/1982CA1119069A1 Flue restrictor
01/1982
01/08/1982EP0034160A4 Flue control.
12/1981
12/30/1981EP0042493A2 Swivelling damper
12/10/1981WO1981003533A1 Guillotine damper
11/1981
11/24/1981US4301785 Adjustable flue control for furnaces
10/1981
10/06/1981US4292950 Gas burner system
09/1981
09/16/1981EP0035840A1 Automatic draft controller
09/15/1981US4289271 Damper construction for a gas fired combustion apparatus
09/03/1981WO1981002463A1 Automatic draft controller
08/1981
08/26/1981EP0034160A1 Flue control
08/25/1981CA1107594A1 Damper assembly
07/1981
07/21/1981US4279629 Fire prevention filter for chimneys and the like
07/07/1981US4276871 Flue damper and draft regulator
06/1981
06/23/1981US4274392 Controlled air intake apparatus for furnaces and the like
05/1981
05/12/1981CA1100847A1 Damper valve
05/12/1981CA1100820A1 Automatic damper device
04/1981
04/28/1981US4263890 Flue restrictor
04/22/1981EP0027175A2 Shut-off system for flue gas exhaust conduits or suction air conduits of oil and gas fireplaces
04/14/1981CA1099168A1 Chimney damper arrangement
03/1981
03/05/1981WO1981000609A1 Flue control
03/03/1981US4253492 System for controlling the flow of gaseous fluids
02/1981
02/17/1981US4251024 Automatic vent damper
02/10/1981US4249883 Automatic damper device
01/1981
01/20/1981US4245778 Vent control arrangement for combustion apparatus
12/1980
12/16/1980US4239061 Damper valve
12/09/1980US4237855 Flue throttle
12/02/1980US4236668 Thermal damper assembly having position controls
10/1980
10/28/1980CA1088389A1 Device in flue gas dampers
09/1980
09/30/1980US4225080 Damper construction for a gas fired combustion apparatus
09/30/1980CA1086633A1 Air deflector for burner
09/30/1980CA1086586A1 Intake fuel mixture heating system for internal combustion engine
08/1980
08/26/1980CA1084387A1 Damper with curved extension plates for wide range flow control
07/1980
07/22/1980US4213477 Automatic damper for furnace vent pipe
06/1980
06/17/1980US4207864 Damper
03/1980
03/18/1980US4193541 Damper latch
03/11/1980US4192310 Device in flue gas dampers
03/04/1980US4191326 Draft control arrangement for combustion apparatus
03/04/1980US4191171 Draft hood and damper assembly for fuel fired heating apparatus
02/1980
02/19/1980US4188938 Burner device, especially for a brazier or the like
02/12/1980US4187815 Intake fuel mixture heating system for internal combustion engine
01/1980
01/01/1980US4181116 Stove
12/1979
12/04/1979US4176673 Purged sliding gate valve
11/1979
11/20/1979US4174942 Flue control assembly
08/1979
08/21/1979US4164936 Damper
01/1979
01/30/1979US4136676 Flue box assembly
10/1978
10/03/1978CA1039559A1 Temperature compensating valve assembly
10/03/1978CA1039558A1 Damper assembly for closing a duct for hot gases
09/1978
09/19/1978US4114805 Thermal damper assembly
08/1978
08/22/1978US4108369 Automatic flue damper
08/15/1978US4106890 Air deflector
08/15/1978CA1036429A1 Stove damper assembly
07/1978
07/11/1978US4099471 Apparatus for cleaning the air nozzles and regulating air flow thereto in chemical recovery boilers
06/1978
06/20/1978US4095534 Damper with curved extension plates for wide range flow control
06/06/1978US4093245 Mechanical sealing means
09/1977
09/06/1977US4046318 Automatic boiler damper
07/1977
07/26/1977US4037584 Stove damper assembly
06/1977
06/07/1977US4027604 Means for governing the air supply to a furnace
05/1977
05/10/1977US4022246 Damper assembly for closing a duct for hot gases
04/1977
04/12/1977US4017024 Stack damper control arrangement
04/05/1977US4015587 Fireplace damper operating mechanism
12/1976
12/14/1976US3996864 Furnace damper and support
08/1976
08/03/1976US3972348 Temperature compensating valve assembly
04/1976
04/20/1976US3951130 Isolating damper for closing a duct
03/1976
03/30/1976US3946752 Flue gas valve for the refining process in the inert gas system
03/16/1976US3943861 Device for operating air governing means at a refuse burning furnace
03/09/1976US3942758 Damper valve
03/02/1976US3941067 Barometric draft regulator
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