(under subclass 2) Subject matter wherein the significant structural details include means for preventing the formation of electric arcs when a circuit is broken or smothering an arc once it forms. The circuit may be broken at a plurality of points as by the provision of auxiliary arcing contacts shunting the main contacts or by means of a magnetic coil arranged adjacent the contacts wherein a magnetic field is generated which tends to repel and extinguish the arc.
SEE OR SEARCH CLASS
200, Electricity: Circuit Makers and Breakers,
10, for nonmagnetically actuated switches with arc preventing or extinguishing means.
218, High-Voltage Switches With Arc Preventing and Extinguishing Devices,
1+, for nonmagnetically actuated switches with arc preventing or extinguishing means.
337, Electricity: Electrothermally or Thermally Actuated Switches, 110, and 273+ for electrothermally actuated switches with arc prevention means.
361, Electricity: Electrical Systems and Devices,
2+, for safety and protection devices with arc suppression means and subclasses 117+ for high voltage dissipators, per se, especially subclasses 133+ for magnetic means.
