RU2636432C1 - Water skis - Google Patents

Abstract

FIELD: transportation.SUBSTANCE: water skis comprise two identical floats, each made in the form of a rubber inflatable cylindrical balloon. The float bow is vertically straight and streamlined in the horizontal plane, the poop is flat and located in a vertical plane. In the middle of the float, a well is made on the top, the walls of which are widened to the bottom. The well bottom is connected to the float bottom. On the well bottom, a flooring with a foot-fastening device is fixed. The displacement of each float is greater than the weight of a person.EFFECT: minimizing loads on leg muscles and simplifying the design of water skis.2 dwg

Description

The invention relates to watercraft, namely to ski for movement on water. Skis can be used to overcome water barriers and fishing.

A device for moving on water is known (RF patent 2545125). The device contains two identical rigid floats, interconnected by two opposite lateral surfaces of the sides with two parallel connections, with leg mounts and propulsive flaps made in the form of rectangular metal plates with a cutout on one of the longitudinal edges of rectangular metal plates with curved side edges sides in one direction at an angle of 90 degrees, as well as located by curved edges of the sides of rectangular metal plates in the direction opposite to the movement of the hard floats, and installed with their respective holes, made on the corresponding sections of the surfaces of the upper ends, bent sides of the rectangular metal plates, at the ends of the corresponding axes, fixed with their other ends on the corresponding sections of the outer surfaces of the sides of the hard floats.

The device has a design with moving parts, complex and low-tech. The thrust is created by the movement of the legs and pushing away with sticks, as when skiing in the snow, which requires great effort of all the muscles of the legs and arms.

Common features of the analogue and invention: two floats.

Known skiing for movement on water (RF patent 2048378), adopted as a prototype of the invention. Skis have a pair of floats, each of which contains an elastic inflatable inner shell covered by an outer shell with a longitudinal rib, a leg mount and a stiffener for the float. The outer shell is made of soft material with a cutout in the upper part, the edges of which are connected to a rigid well having a flat horizontal bottom and vertical walls connected to the bottom along its perimeter. The stiffness element of the float is placed between the surfaces of the outer and inner shells contacting from below; in the inner inflatable shell there is a through hole for the well, which is installed as far as it will go into the stiffness element of the float, in which the foot mount is placed.

Skis have a complex structure. The thrust is created by the movement of the legs and the emphasis on the sticks, as when skiing, which requires the efforts of all the muscles of the legs and arms.

Common features of the analogue and the invention: two inflatable floats, a well with a bottom and a foot attachment device.

The technical task of the invention is the creation of ski traction along the direction of movement by transferring the weight of a person’s body from one float to another, as when walking in place, and simplifying the design.

EFFECT: self-propelled skis were created, load on leg muscles was minimized, and ski construction was simplified.

The invention is illustrated by drawings. In FIG. 1 shows a ski view from above, in FIG. 2 - longitudinal axial section of the float. The following notation is introduced in the figures: 1 - float; 2 - well; 3 - slan; 4 - air valve; 5 - eye; 6 - device mounting legs.

Water skiing contains two identical floats. Each float is made in the form of a rubber inflatable cylindrical balloon, the walls of which are reinforced with textile fabric. The nose of the float is straight vertical and streamlined in the horizontal plane, the feed is flat and located in the vertical plane (Fig. 1 and 2).

In the middle of the float, a well 2 is made from above, the walls of which are expanded downward in the form of a bell (Fig. 2). The horizontal bottom of the well is made integral with its walls and connected to the bottom of the float, for example, by pressing. At the bottom of the well, a slan is fixed with a foot fastener (Fig. 2).

The upper trailing edge of the wall of the well 2 is located at half the length of the float 1, the center of pressure (CD) of the person’s weight on the slan from the vertical, passing through the upper trailing edge of the well and crossing the longitudinal axis of the float, is shifted to the nose of the float by 5-15 cm (Fig. 2 )

The displacement of each float is greater than the weight of a person. The float may be made with the dimensions indicated in FIG. 1 and 2, with a displacement of 90 kg.

With rubber bands, with the help of eyebrows 5, the skis are fastened at a distance of 0.5-0.7 m from each other so as not to diverge to the sides.

Water skiing method

On the shore of a pond, a person inserts his feet into the wells of 2 floats 1 and foot mounts 6. Moves along the shore to the water, like on ordinary skis, and transfers his weight on one leg afloat. Under the weight of a person, the float bends its nose inward and glides forward, as if from a hill, because the center of pressure (CD) of a person’s legs on the slan, from the middle of the length of the float, is closer to the nose (Fig. 2).

A loaded float slides into the depth at an acute angle to the surface of the water, creating traction that moves the float forward. After the upper edge of the nose of the float is immersed in water, a person steps on the other foot, the first float floats in a horizontal position, the nose of the second float moves in depth and forward as it deepens, creating a longitudinal traction.

Skis move forward in the water while a person steps over from one foot to another.

The technical result of the invention is achieved - self-propelled skis were created, the load on the leg muscles was minimized, and the ski design was simplified.

Features of the invention

The nose of the float is straight vertical and streamlined in the horizontal plane, the feed is flat and located in the vertical plane.

The walls of the well are expanded downward in the form of a bell, the horizontal bottom of the well is made integral with its walls and connected to the bottom of the float.

At the bottom of the well, a slan is fixed with a foot fastener.

The upper edge of the back wall of the well is located at half the length of the float, and the center of pressure of the person’s weight on the slan, from the rear upper edge of the well, is shifted to the nose of the float,

The displacement of each float is greater than the weight of a person.

Claims (1)

Water skis containing two identical floats, each made in the form of a rubber inflatable cylindrical balloon, in the middle of the float there is a well with a bottom and a foot attachment device, characterized in that the nose of the float is straight vertical and streamlined in the horizontal plane, the feed is flat and located in the vertical planes, with the walls of the well expanding downward, the horizontal bottom of the well is made integral with its walls and connected to the bottom of the float, in addition, a slan is attached to the bottom of the well with the device attached legs, and the upper edge of the back wall of the well is located half the length of the float, and the center of pressure of the weight of the person on the slan, from the rear upper edge of the well, is shifted to the nose of the float, in addition, the displacement of each float is more than the weight of the person.

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