3818343

Information

• Patent Grant
• 3818343

• References
• Source

• Patent Number

  3,818,343

• Date Filed

  Not available

• Date Issued

  Tuesday, June 18, 1974
  50 years ago

• CPC

  • B60L3/12 - Recording operating variables; Monitoring of operating variables
  • G01P3/46 - by measuring amplitude of generated current or voltage
  • Y02T10/646 - Number of electric drive machines
  • Y02T10/648 - Two electric drive machines
  • Y10S388/909 - Monitoring means
  • Y10S388/922 - Tuned or resonant circuit

• US Classifications

  • 324 - Electricity: measuring and testing
  • 246 - Railway switches and signals
  • 388 - Electricity: motor control systems