2174946

Information

• Patent Grant
• 2174946

• References
• Source

• Patent Number

  2,174,946

• Date Filed

  Not available

• Date Issued

  Tuesday, October 3, 1939
  85 years ago

• CPC

  • B60G11/20 - characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
  • B60G17/025 - the mechanical spring being a torsion spring
  • B64C27/00 - Rotorcraft Rotors peculiar thereto
  • B64C27/02 - Gyroplanes
  • B64C27/025 - Rotor drives, in particular for taking off; Combination of autorotation rotors and driven rotors
  • B64C37/00 - Convertible aircraft
  • B64C2700/6277 - with driven or windmilling propellers

• US Classifications

  • 244 - Aeronautics and astronautics
  • 123 - Internal-combustion engines
  • 416 - Fluid reaction surfaces