3560970

Information

• Patent Grant
• 3560970

• References
• Source

• Patent Number

  3,560,970

• Date Filed

  Not available

• Date Issued

  Tuesday, February 2, 1971
  53 years ago

• CPC

  • H01Q19/10 - using reflecting surfaces
  • B61L1/20 - Safety arrangements for preventing or indicating malfunction of the device
  • B61L23/041 - Obstacle detection
  • G01S13/931 - between land vehicles; between land vehicles and fixed obstacles
  • H01Q1/3225 - Cooperation with the rails or the road
  • H01Q13/20 - Non-resonant leaky-waveguide or transmission-line aerials Equivalent structures causing radiation along the transmission path of a guided wave
  • G01S2013/9328 - for vehicles on rails
  • G01S2013/9339 - co-operating with reflectors or transponders
  • G01S2013/9346 - controlling the brakes

• US Classifications

  • 343 - Communications: radio wave antennas
  • 246 - Railway switches and signals
  • 340 - Communications: electrical
  • 342 - Communications: directive radio wave systems and devices