3628128

Information

• Patent Grant
• 3628128

• References
• Source

• Patent Number

  3,628,128

• Date Filed

  Not available

• Date Issued

  Tuesday, December 14, 1971
  53 years ago

• CPC

  • H01H9/0005 - Tap change devices
  • H01F29/04 - having provision for tap-changing without interrupting the load current
  • H01H9/0038 - making use of vacuum switches
  • H01H33/66 - Vacuum switches
  • H02H7/055 - for tapped transformers or tap-changing means thereof
  • Y10T307/297 - Transformer connections

• US Classifications

  • 323 - Electricity: power supply or regulation systems
  • 307 - Electrical transmission or interconnection systems