US PATENT SUBCLASS 337 / 281
.~.~.~ Blowout means (e.g., gaseous)

Current as of: June, 1999
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337 /   HD   ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES

14  DF  ELECTROTHERMALLY ACTUATED SWITCHES {9}
142  DF  .~ Fusible element actuated {15}
273  DF  .~.~ With arc suppression or extinguishing means {6}
281.~.~.~ Blowout means (e.g., gaseous)

DEFINITION

Classification: 337/281

(under subclass 273) Subject matter wherein the suppression or extinguishing means comprises means whereby a blast of air is directed across an arc to extinguish it or whereby a magnetic field is generated when the circuit is broken, the field acting to repel and break the arc.

SEE OR SEARCH CLASS

218, High-Voltage Switches With Arc Preventing and Extinguishing Devices,

22+, for magnetic blow out devices for arc blow out in mechanical switches.

335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,

201, for electromagnetically operated switches with magnetic blow out means.

361, Electricity: Electrical Systems and Devices, 133+, for safety and protection systems and devices with magnetic means for snuffing an arc.