(under the class definition) Discharge devices in which a flame provides an ionized path for the discharge.
SEE OR SEARCH CLASS
96, Gas Separation: Apparatus,
15+, for apparatus for smoke precipitation of the electrostatic type having electrodes between which the combustion products (e.g., smoke) are passed and which attract particles in the combustion products by means of electrostatic fields.
123, Internal-Combustion Engines,
594, for high tension ignition systems for internal combustion engines, which include a jump type spark gap igniter operating within a cylinder.
361, Electricity: Electrical Systems and Devices, 247+, for electrical devices for igniting combustible material which include spark or arc electrodes and means to bring the electrodes into contact with the combustible material.
431, Combustion,
25, for a burner control circuit utilizing the current rectifying effect of a flame and subclasses 78+ for a burner
controlled by an electric control circuit that senses flame.
