1899746

Information

• Patent Grant
• 1899746

• References
• Source

• Patent Number

  1,899,746

• Date Filed

  Not available

• Date Issued

  Tuesday, February 28, 1933
  92 years ago

• CPC

  • H02H5/08 - responsive to abnormal fluid pressure, liquid level or liquid displacement
  • H01F27/14 - Expansion chambers Oil conservators Gas cushions Arrangements for purifying, drying, or filling
  • H01F2027/404 - Protective devices specially adapted for fluid filled transformers
  • H01H33/555 - Protective arrangements responsive to abnormal fluid pressure, liquid level or liquid displacement
  • H01H35/32 - actuated by bellows

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 174 - Electricity: conductors and insulators
  • 200 - Electricity: circuit makers and breakers