72093 ⎘
Rotorcraft; Rotors peculiar thereto; Gyroplanes; Rotor or rotor head construction Devices for folding or adjusting the blades
AUTOGYRO
#2Folding concentrically mounted propeller blades for drag reduction
#3Semi-automatic rotor blade fold mechanism
#4System and method for vertical take-off in an autogyro
#5Vertical take-off and vertical landing gyroplane
#6Retractable lifting blades for aircraft
#7Folding rotor for an autogyro device
#8Personal land and air vehicle
#9Retractable lifting blades for aircraft
#10Retractable VTOL rotor systems and methods
#11Autogiro pitch changing rotor head