Pedal-operated propulsion device used on water - provides increasing speed and reducing bodily effort, with floats attached to feet

摘要

Water propulsion device comprises a narrow rectangular frame in the centre of the longer side of which is a shaft on which is mounted a radial-tooth drive gear: on both sides of the shaft, outside the frame, is a crank lever with pedal and stirrup. The drive gear transmits torque via a gear at the end of the frame to a propeller. At the other end of the frame is a guide rod with an adjustable seat in the middle and two adjustable shoulder supports at its free end.