| Patents for F23Q 9 - Ignition by a pilot flame (873) |
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| 03/19/1981 | WO1981000751A1 Gas pilot assembly for universal application and method of making same |
| 03/10/1981 | US4255118 Electric ignition system |
| 02/24/1981 | CA1096464A1 Fuel ignition system having interlock protection and electronic valve leak detection |
| 02/17/1981 | US4251205 Device for igniting the fuel gas of a flame cutting machine |
| 01/13/1981 | CA1093333A1 Ignition system for flares |
| 01/07/1981 | EP0021937A1 Electromagnetic safety mechanism |
| 12/30/1980 | US4242080 Safety device for gas burners |
| 12/30/1980 | US4242079 Fuel ignition control system |
| 12/30/1980 | US4242078 Centralized automatic pilot/pilotless ignition control system |
| 12/02/1980 | CA1090903A1 Fuel ignition system having contact interlock protection |
| 11/18/1980 | CA1089662A1 Ignition system for waste gas flares with gas compensation |
| 08/26/1980 | CA1084610A1 Fuel ignition system control arrangement providing total fuel shutoff and contact protection |
| 08/05/1980 | US4215979 Ignition torch |
| 06/10/1980 | US4207053 Igniter and flame sensor assembly for gas burning appliance |
| 05/27/1980 | CA1078496A1 Multi-pilot gas conservation system for flare burners |
| 04/08/1980 | US4197082 Fuel ignition control arrangement employing dual flame sensors |
| 03/25/1980 | US4194875 Intermittent pilot ignition system |
| 03/11/1980 | US4192642 Universal pilot assembly |
| 02/12/1980 | US4188180 Fuel burner safe starting system |
| 01/29/1980 | CA1070607A1 Cycling pilot burner control system with pressure switch |
| 12/11/1979 | US4178149 Fuel ignition control system |
| 12/04/1979 | US4177034 Retrofit igniter |
| 11/06/1979 | US4173498 Heat gathering and conducting device for thermocouple sensors |
| 09/18/1979 | US4168141 Safety ignition means for burner installations |
| 09/04/1979 | CA1061700A1 Universal burner |
| 05/08/1979 | CA1054043A1 Combustion heating apparatus to improve operation of gas pilot burners |
| 04/24/1979 | CA1053019A1 Firing device for gas lighting appliances |
| 04/03/1979 | US4147498 Ignition assembly for flare stacks |
| 04/03/1979 | US4147496 Safety ignition means for burner installations |
| 04/03/1979 | US4147494 Gas burner ignition device |
| 04/03/1979 | CA1051768A1 Spark ignited recycling ignition system with interlocking gas valve control |
| 03/20/1979 | US4145180 Ignition system for fuel burning apparatus |
| 02/27/1979 | US4141213 Pilot flame tube |
| 02/13/1979 | US4139339 Flare gas stack with purge control |
| 12/26/1978 | US4131413 Self-contained electric igniter with rechargeable battery |
| 12/12/1978 | CA1044130A1 Slow-opening gas valve |
| 12/05/1978 | US4128393 Flame shielding device |
| 11/28/1978 | US4127380 Ignition system for waste gas flares with gas compensation |
| 11/14/1978 | US4125355 Safety control system for gas-fired infrared radiant heater |
| 11/07/1978 | US4124354 Recycling pilot ignition system |
| 10/31/1978 | CA1041415A1 Burner control system with cycling pilot burner |
| 10/17/1978 | US4120638 Ignition system for flares |
| 09/05/1978 | US4111640 Cycling pilot burner control system with pressure switch |
| 08/29/1978 | US4110065 Cock apparatus of automatic ignition type for gas appliance |
| 08/15/1978 | US4106889 Burner ignition system |
| 08/01/1978 | US4104016 Cycling pilot burner control system with safety timing |
| 07/18/1978 | US4101261 Flare gas stack with purge gas conservation system |
| 07/18/1978 | US4101257 Pilot gas conservation system for flare stacks |
| 05/23/1978 | US4090840 Multi-pilot gas conservation system for flare burners |
| 05/02/1978 | US4087231 Slow-opening gas valve |
| 04/25/1978 | US4086048 Spark ignited recycling ignition system with interlocking gas valve control |
| 04/04/1978 | US4082493 Gas burner control system |
| 03/14/1978 | US4078879 Fuel ignition system control arrangement providing total fuel shutoff and contact protection |
| 03/07/1978 | US4077762 Fuel ignition system having contact interlock protection |
| 02/14/1978 | US4073611 Control system for gas burning apparatus |
| 12/20/1977 | US4063872 Universal burner |
| 11/22/1977 | US4059386 Combustion heating apparatus to improve operation of gas pilot burners |
| 08/30/1977 | US4044794 Slow-opening gas valve |
| 07/26/1977 | US4038019 Fail-safe energizing circuit for a functional device |
| 05/24/1977 | US4025288 Gas lamp igniter device |
| 05/03/1977 | US4021190 Burner block valve assembly |
| 12/28/1976 | US3999935 Compact steam generator ignition system |
| 11/16/1976 | US3992137 Gas burner |
| 10/19/1976 | US3986817 Grid burner pilot igniter |
| 08/17/1976 | US3975135 Burner control system with cycling pilot burner |
| 06/15/1976 | US3963410 Control system for domestic gas oven burners |
| 05/11/1976 | US3955910 Self-checking automatic pilot fuel ignition system |
| 05/04/1976 | US3954384 Burner system |
| 03/30/1976 | US3947231 Pilot light system for lighting a main burner for heating high velocity high pressure turbulent air |
| 02/17/1976 | US3938936 Fluid control system |
| 02/03/1976 | US3936286 Glass fiberizer with ignition system |
| 01/06/1976 | US3930892 Replacement thermocouple apparatus for a pilot burner |
| 01/06/1976 | US3930891 Pilot burner thermocouple apparatus |