Patent ID: 7985048
Filing Date: 2011-07-26
Classification: B64C

Abstract:
1. A folding rotor blade for an autogyro device comprising: a plurality of connected rotor members, wherein when the folding rotor blade is in a compressed state the folding rotor blade has a compressed length and some of the connected rotor members are disposed in a non-parallel arrangement, and when the folding rotor blade is in an extended state the folding rotor blade has an extended length which is greater than the compressed length and the connected rotor members are disposed in a parallel arrangement; wherein at least one of: (1) the folding rotor blade is spring loaded to move the folding rotor blade into the compressed state when an autogyro device is not operating; or (2) the folding rotor blade is adapted to move to the extended state from the compressed state as a result of centrifugal force supplied by an autogryo device.