(under subclass 350) Apparatus, including a barrier means encircling and extending along a flame area and forming a distinct chamber or vessel within which combustion takes place, the chamber or vessel having an unmodified discharge.
SEE OR SEARCH THIS CLASS, SUBCLASS:
151, for a flame holder having a windshield within a covered zone.
157+, for a combustion confining means maintaining a critically defined combustion pressure, and see the search notes under subclasses 157 and 158.
242, for a burner casing enclosing a heated feed line section and flame holder.
243, for a flame enclosing tube or sleeve that comprises or conducts heat to a burner feed line.
263, for a burner having an electrical igniter in an offset ignition chamber. 265, for a gun type burner with a spark electrode adjacent a fuel discharger and in an air blast.
285, for separately supplied or controlled flame holders having a common flame chamber or shield means.
SEE OR SEARCH CLASS
126, Stoves and Furnaces,
91+, for a radiator type heater which includes apparatus for burning gaseous fuel within a combustion tube; and subclasses 360+ for a submerged liquid or gaseous fuel water heater which is often a tubular combustion chamber passing through a body of water.
239, Fluid Sprinkling, Spraying, and Diffusing,
499, for a spray nozzle of general utility having a flow deflecting or rotation controlling means in the form of a chamber.
