LandOfFree - US Patents - Listing for Combustion,Timer, programmer, retarder or condition responsive control,Shutdown by sensed absence of flame in proving period

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Automatic reset control for direct spark ignition systems

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Backup trial for ignition timer

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Burner ignition and control system

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Combustion apparatus

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Control system for redundant valves

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Direct ignition system for gas appliance with DC power source

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Direct spark ignition system

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Fuel burner control circuit

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Fuel ignition control arrangement having a timing circuit with f

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Gas burner ignition device

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Gas drier

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Gas furnace control arrangement

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Gas ignition control

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Gas oven control system

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Hot surface direct ignition system for gas furnaces

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Hot surface direct ignition system for gas furnaces

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Oil burner primary control for interrupted ignition system

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Oil burner primary control for interrupted ignition system

Combustion – Timer – programmer – retarder or condition responsive control – Shutdown by sensed absence of flame in proving period

Safety control system for gas-fired infrared radiant heater