Adjustable exhaust nozzle for locomotive engines
Adjustable primary air supply for wood burning device
Adjustable temperature sensitive duty cycling furnace and...
Aid for loading a solid fuel boiler coupled with an...
Air flapper valve assembly
Air-intake system for residential furnaces
Air/burner port
Airflow switch checking circuit
Alternate gas fuel burning system
Alternating current pilot control
An apparatus for detecting carryover particles in the...
An autocontrol burner and its combustion control method
An automatic system to feed burners with diesel or light...
Anti-condensation device for a flame sensor of a combustion...
Anti-leak valving system
Antimony-doped stannic oxide thick film gas sensor
Apparatus and method for controlling a damper in a gas-fired...
Apparatus and method for controlling the temperature of a space
Apparatus and method for detecting leaks in a system for...
Apparatus and method for providing multiple stages of fuel