3392388

Information

• Patent Grant
• 3392388

• References
• Source

• Patent Number

  3,392,388

• Date Filed

  Not available

• Date Issued

  Tuesday, July 9, 1968
  56 years ago

• CPC

  • B61L15/0027 - Radio-based
  • B61L1/20 - Safety arrangements for preventing or indicating malfunction of the device
  • B61L3/125 - using short-range radio transmission
  • B61L15/0036 - Conductor-based
  • B61L23/041 - Obstacle detection
  • G01S13/02 - Systems using reflection of radio waves
  • G01S13/75 - using transponders powered from received waves
  • G01S13/931 - between land vehicles; between land vehicles and fixed obstacles
  • H01P1/16 - for mode selection
  • H01P3/20 - Quasi-optical arrangements for guiding a wave
  • G01S2013/9328 - for vehicles on rails
  • G01S2013/9339 - co-operating with reflectors or transponders
  • G01S2013/936 - combined with communication equipment with other vehicles and/or with base stations(s)
  • G01S2013/9375 - in the front of the vehicle
  • G01S2013/9385 - on the side(s) of the vehicle

• US Classifications

  • 342 - Communications: directive radio wave systems and devices
  • 246 - Railway switches and signals