FIELD: sportsman exercising, recreation, labor and entertainment equipment.
SUBSTANCE: water skis has pair of skis with manual-drive engines mounted on brackets equipped with bearing unit comprising, positioned on drive shaft, blade wheel with flywheel coupling, bearing unit for bracket, sprocket, housing, and ski sticks. Each of skis enables floatability on water. Blade wheel has length of circle of reference diameter equal to length of human pace. Sprocket rigidly fixed on drive shaft and positioned within housing is equipped with guiding rollers for cooperation with ski stick and loose rotation on shaft. Ski stick is disposed between rollers so as to move forward and backward, and is provided with stops which restrict its stroke and prevent exit thereof from housing. Ski stick comprises roller plank formed as four-link pivot mechanism whose rotating links are arranged at predetermined angle relative to ski stick axis and are spring-loaded at the side of obtuse angle and fixed by stops, and may rotate in reverse direction. Plank rollers are engaged with sprocket. Ski stick consists of two parts having length ratio of 1:2, said parts being connected by means of cardan pivot joint positioned in lower part of ski stick and adapted for rotation through predetermined angle within gap "a" relative to stick axis restricted by restricting stops formed by elongation of pivot joint forks. Each of skis is equipped with fins positioned on ski bottom, in its mid portion, with one end thereof being fixed on pivot joint for rotation through an angle of up to 90 deg while other end being unfixed. Both skis are connected through falls at two sites, with length of fall being chosen so as to allow movement of one ski relative to other ski by distance at least equal to length of human pace.
EFFECT: wider operational capabilities and increased efficiency.
4 cl, 7 dwg
