2997564

Information

• Patent Grant
• 2997564

• References
• Source

• Patent Number

  2,997,564

• Date Filed

  Not available

• Date Issued

  Tuesday, August 22, 1961
  63 years ago

• CPC

  • H01H33/008 - Pedestal mounted switch gear combinations
  • H01B3/16 - gases
  • H01H1/385 - Contact arrangements for high voltage gas blast circuit breakers
  • H01H33/7023 - characterised by an insulating tubular gas flow enhancing nozzle
  • H01H3/40 - using friction, toothed, or screw-and-nut gearing
  • H01H33/14 - Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc
  • H01H33/904 - characterised by the transmission between operating mechanism and piston or movable contact
  • H01H2033/146 - using capacitors

• US Classifications

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