71406 ⎘
Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction; Propellers; Blades each blade being constituted by a surface enclosing an empty space, e.g. forming a closed loop
PROPELLER
#2DUO-PROPELLERS AND SINGLE PROPELLERS
#3PROPELLER
#4Propeller
#5DUO-PROPELLERS AND SINGLE PROPELLERS
#6Propeller
#7Propeller
#8Propeller
#9Propeller
#10Propeller
#11AIR PROPELLER ARRANGEMENT AND AIRCRAFT
#12SCREW PROPELLER (VARIANTS) AND THE INVOLUTE OF THE BLADES THEREOF
#13Submersible mixing propeller
#14Wind sail receptor
#15Enhanced performance parallel loop blade propellers