(under the class definition) Apparatus including means preventing or limiting the spread of flame from the combustion area into the fuel feed passage of a burner.
SEE OR SEARCH THIS CLASS, SUBCLASS:
19, for the control of a burner responsive to combustion pressure;
22, for the control of a burner responsive to a leakage, flashback or escaped flame sensor;
29+, for a timer or programmer controlled scavenging means; and
328+, for a burner having a porous, capillary, permeable, or sievelike member through which the fuel is delivered to the combustion zone.
SEE OR SEARCH CLASS 48, Gas: Heating and Illuminating,
192, for a means for preventing or localizing and confining, explosions in a gas line or distributing system.
60, Power Plants,
39.11, for a combustion products type power plant with a screen to prevent flash-back.
239, Fluid Sprinkling, Spraying, and Diffusing,
432, for a sprinkling or spraying device of general utility including a device mixing separately supplied fluid streams upstream of a discharger and having a dispersing plate or obstruction in the mixing chamber, subclasses 553+ for a unitary plural outlet nozzle with an interior guide, filter or apertured member; and subclasses 590+ for a rigid terminal member having an interior guide, distributor filter or screen.
362, Illumination,
164+, for a lantern provided with fine screens at the openings in the lantern to prevent the flame from igniting combustible gases which may surround the lantern.
