3418440

Information

• Patent Grant
• 3418440

• References
• Source

• Patent Number

  3,418,440

• Date Filed

  Not available

• Date Issued

  Tuesday, December 24, 1968
  56 years ago

• CPC

  • H01H33/86 - the flow of arc-extinguishing fluid under pressure from the contact space being controlled by a valve
  • H01H33/18 - using blow-out magnet
  • H01H33/7069 - characterised by special dielectric or insulating properties or by special electric or magnetic field control properties

• US Classifications

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