3639712

Information

• Patent Grant
• 3639712

• References
• Source

• Patent Number

  3,639,712

• Date Filed

  Not available

• Date Issued

  Tuesday, February 1, 1972
  53 years ago

• CPC

  • H01H33/91 - the arc-extinguishing fluid being air or gas
  • H01H33/164 - the impedance being inserted in the circuit by blowing the arc onto an auxiliary electrode
  • H01H33/7038 - characterised by a conducting tubular gas flow enhancing nozzle

• US Classifications

  • 218 - High-voltage switches with arc preventing or extinguishing devices