71393 ⎘
Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction; Single or multiple threaded helicoidal screws, or the like, comprising foils extending over a substantial angle; Archimedean screws with helicoidal foils projecting from outside surfaces of floating rotatable bodies, e.g. rotatable, cylindrical bodies
MODIFIED VARIABLE HELIX CYLINDERS AND PROPELLER AND NOZZLE USING SAME
#2Hetero-stiffness robotic device
#3Unmanned undersand vehicle
#4Pipe-inspection device propelled by an Archimedes screw
#5Water turbine propeller
#6Screw drive vehicle
#7Screw drive vehicle