(under subclass 118) Subject matter having electrical shielding means to shield the spark plug.
(1) Note. The shielding means ordinarily are used to prevent the ignition current used with the spark plug from radiating or otherwise establishing unwanted electrical effects.
SEE OR SEARCH THIS CLASS, SUBCLASS:
313, for other space discharge devices having electric shielding means.
SEE OR SEARCH CLASS
123, Internal-Combustion Engines,
146.5+, for shielded ignition systems for internal combustion engines. 174, Electricity: Conductors and Insulators,
32+, for electrical conductors having shielding means and see subclass 35 for the miscellaneous electrical shielding structure including that designed for use with spark plugs, or spark plug type bushings.
315, Electric Lamp and Discharge Devices: Systems,
85, for miscellaneous space discharge device systems including some spark ignition systems having shielding means and consult the search notes of subclass 85 for a list of related art.
439, Electrical Connectors,
125+, for an electrical connector with a spark or glow plug cover; and subclasses 607+ for an electrical connector having or providing an inductive or capacitive shield.
