3790780

Information

• Patent Grant
• 3790780

• References
• Source

• Patent Number

  3,790,780

• Date Filed

  Not available

• Date Issued

  Tuesday, February 5, 1974
  51 years ago

• CPC

  • B61L23/34 - Control, warnings or like safety means indicating the distance between vehicles or vehicle trains by the transmission of signals therebetween
  • B60K31/0008 - including means for detecting potential obstacles in vehicle path
  • B60K31/0058 - responsive to externally generated signalling
  • B61L3/225 - using separate conductors along the route
  • B61L3/227 - using electromagnetic radiation
  • G08G1/162 - event-triggered
  • Y02T10/7258 - Optimisation of vehicle performance

• US Classifications

  • 246 - Railway switches and signals
  • 340 - Communications: electrical