Devices for controlling the flow of fuel gases and waste gases. Burners, dampers, gas and air pipes, and reversing valves when claimed in combination with the ovens are classified herein.
SEE OR SEARCH CLASS
126, Stoves and Furnaces,
285, and appropriate indented subclasses, for specific dampers and operating devices.
137, Fluid Handling, for fluid handling in general including flow control, e.g., for air or gas.
251, Valves and Valve Actuation, for damper and valve structure, per se.
431, Combustion, appropriate subclass for residual apparatus specialized to combustion.
