3451644

Information

• Patent Grant
• 3451644

• References
• Source

• Patent Number

  3,451,644

• Date Filed

  Not available

• Date Issued

  Tuesday, June 24, 1969
  55 years ago

• CPC

  • B64C29/0025 - the propellers being fixed relative to the fuselage
  • B64C27/023 - Construction of the blades; Coating of the blades
  • B64C27/026 - Devices for converting a fixed wing into an autorotation rotor and viceversa
  • B64C27/20 - Rotorcraft characterised by having shrouded rotors
  • B64C2700/6291 - Rotors stowable in the wings

• US Classifications

  • 244 - Aeronautics and astronautics
  • 416 - Fluid reaction surfaces