FR2574748A3 - NAUTICAL GAME CONSISTING OF A BOARD PROPELLED BY TWO FLEXIBLE FINS - Google Patents

Abstract

<SDO> ABE CY=FR> <H0> Water game comprising a board propelled by two flexible flippers </H0> The invention relates to an item of water games apparatus intended to move on the water, only by the movements of the player moving on a support board equipped with only two movable elements ensuring propulsion. It consists of a support board 1, of elliptical or ogival shape under which, in a division 6 situated in its rear portion 2 there are fixed, by means of four screws, two movable elements 3 and 4. In its upper front portion there is fixed a rope 8 allowing the user to perform any sideways movement. Under the lower front portion 10, a removable centreboard 9 may be fixed, if needs be. The item of water games apparatus, according to the invention, is intended to allow anyone who wants to to move on the water in a self-propelled manner.

Description

The present invention relates to a water games apparatus intended to move on the water, in relation to the movements of the player moving on a support board, of elliptical or ogival shape, provided with two mobile elements (fins) ensuring perfect autonomy. of propulsion to the whole.

Many devices are known using a support board as a water games device.

Other devices are known using other types of supports, of variable shapes and structures, provided with movable elements of various shapes as means of propulsion for water games devices.

Also known are other devices jointly using a board as support and at least four -mobile elements as propulsion means.

In the first case, these devices need external help, total or partial, as a means of propulsion, such as, for example, windsurfing which moves with the help of the wind and surfing which takes advantage of the wind. movement of breaking waves.

In the second case, autonomy is fully achieved.

However, for one or more of the reasons explained below, the use of these devices appears difficult, if not impossible, for a majority of potential users, physically or mentally unsuitable.

a) The cylindrical-shaped support, submerged or partially submerged in use, makes it difficult, even dangerous.

b) The cylindrical support, provided with two caudal blades as well as multiple accessories intended either to facilitate its use, or to avoid the risks inherent in its shape, or even to allow the various essential evolutions, seems to be of a too complex design for a reasonable manufacturing cost, regardless of the materials used, but also, and for these same reasons, appears to be particularly difficult to transport and handle in use.

c) The cylindrical support, or of any other shape, provided with two caudal blades and / or several deformable blades, distributed along and on either side of said support, obviously has one or more of the defects cited in paragraphs a) and b).

In the third case, and for the reasons given below, a still too high number of mobile elements, but also an inadequate design both in their shapes and in their dimensions, an unreasonable arrangement in the positioning of said elements relative to the support board, the use of these devices presents important shortcomings, as well in the results to the propulsion as in the simplicity in the handling and the transport.

The apparatus, according to the invention, is intended to move on the water, in relation to the movement of the player moving on a support board, of elliptical or ogival shape, characterized in that one arranges, at the 'rear and lower end of said support, only two movable elements which, by the sole movements of said user, move around the longitudinal axis of the board.

The other characteristics of the invention will emerge from the following description as well as from the appended drawings in which
Figure 1 shows a general view of the apparatus, according to the invention.
Figure 2 is a top view.

Figure 3 is a bottom view.

Figure 4 is a longitudinal sectional view.

Reference is made to Figures 1 to 4.

The water games apparatus, according to the invention, consists of a support board (1), of elliptical or ogival shape, made of a light material such as plastic, ABUS, fiberglass or certain composite materials.

In the recess (6) arranged under the board (1), in its rear part (2) are fixed, by means of 4 screws (5), the two movable elements (3 and 4) in material preferably similar to the board , except that it must be at the same time and imperatively flexible and nervous, for a maximum propulsive reaction. The profile of these mobile elements (3 and 4) decreases from the start of the step (6) to their end (7).

In Figures 1 to 3, we note, on the front part (10) of the board (1), the presence of a rope (8), or guides intended to perfect the balance of the player, but also to allow the realization of the various desired evolutions.

In Figure 4, we note the presence of a fin (9) ituted to the front and below the support board (1) in its longitudinal axis. Said drift is characterized by the fact that it is removable and optional, its utility being justified only in the presence of water stirred in a fairly significant manner.

The nautical device works as follows: in the rest position, the board floats on the water, the moving parts being submerged. The player stands upright, legs apart, the right in position G I> the left in position G 2, position G showing the center of gravity of the board. The player holds in his hands the rope (8) which will be used to perfect his balance and to carry out the various desired evolutions.

In the active position, the player alternately shifts the weight of his body on his right leg then on the left, thus causing a rolling movement of the apparatus and, consequently, the deep immersion alternately of the moving elements (3 and 4)
Thanks to the positioning of said elements located below the board (1), they come into effective action simultaneously, although in an opposite direction. In fact, the first, drawn down in the first movement, acts through its internal face, while the second, drawn towards the surface of the water, acts through its external face.

The result is a combined propulsion effect of equal power for each element. In the second movement, the effects are reversed, but the result is identical. During the continuous movement between these two positions G 1 and G 2 we will notice that the mobile elements (3 and 4) produce a visual effect and an effective action similar to those produced by a semi-active propeller.

Lateral changes are easily effected by simply pulling the rope (8) corresponding to the direction of the desired direction X while acting more actively on the reverse moving element.

Claims (3)

1) Water games apparatus intended to move on the water, in relation to the movements of the player moving on a support board (1> elliptical or ogival in shape, characterized in that the rear part is arranged and lower (2) of said boards only two movable and removable elements (3 and 4) which, by the sole movements of said player, move around the longitudinal axis of the board. 2) Water games apparatus according to claim 1, characterized by the addition of a rope (or guide) removable (8t fixed on either side of the front end of the support board (1). 3) Water games apparatus according to claim 1, characterized by the optional and removable addition of a fin (9) located 1 'before and below the support board (1) in its longitudinal axis.