FR2909357A1

FR2909357A1 - Water riding device for practicing e.g. water sports, has case including pedals and angular member to drive propeller shaft, float stacked in body, and nozzle surrounding propeller, where body has lower part with housing to receive case

Info

Publication number: FR2909357A1
Application number: FR0610443A
Authority: FR
Inventors: David Adrian
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-30
Filing date: 2006-11-30
Publication date: 2008-06-06
Anticipated expiration: 2026-11-30
Also published as: FR2909357B1

Abstract

The device has a front float (1) stacked in a body (2), and a mechanical case (3) screwed below the body. The case has pedals and an angular member for driving a propeller shaft. A user rests his head or chest on the float, and the body has a lower part including a housing to receive the case. A propeller (4) is fixed on the shaft. A kort nozzle (5) is connected to the body, and surrounds the propeller.

Description

1 La présente invention concerne un dispositif pour avancer dans l'eau àThe present invention relates to a device for advancing in water to

plat ventre, aisément, rapidement et au moyen d'un effort musculaire modéré. Beaucoup de dispositifs actuels utilisent soit la force musculaire, comme des palmes par exemple, soit des sources d'énergies extérieures, comme les scooters sous-marins à hélices à énergie électrique ou thermique. Si des dispositifs semblables existent sous des formes différentes, ils ne permettent pas une utilisation simple, aisée et efficace comme la présente invention dont les formes, l'ergonomie, l'équilibre dans l'eau et la stabilité le permettent. La présente invention possède un caractère innovant car il s'agit ici d'utiliser avec aisance dans l'eau le mouvement de pédalage entraînant mécaniquement une hélice. Ce mouvement étant doublement efficace à cause de son ergonomie et de sa puissance. L'utilisateur avance vite et sans effort avec, au choix, la tête dans l'eau ou hors de l'eau. Une fois l'appareil dans l'eau, à la surface de laquelle il flotte, l'utilisateur s'allonge dessus à plat ventre, poitrine ou tête sur le flotteur avant et les pieds sur les pédales. Pour augmenter le rendement, l'ergonomie et la technique de l'appareil ont été optimisés, de telle sorte que la position de pédalage soit confortable et que l'appareil solide, c'est-à-dire capable de résister notamment aux efforts de torsion résultants du mouvement de pédalage, et stable, car autrement les mouvements du corps ou le couple de rotation de l'hélice tendent à renverser l'appareil. La stabilité est renforcée grâce à la répartition des masses et des parties flottantes. La performance résulte de choix techniques sur l'hélice, la vitesse de rotation et l'utilisation d'une tuyère, de type tuyère Kort, supprimant l'effet de bord. L'appareil est constitué principalement de cinq parties : 1. Le flotteur (1) avant sur lequel l'utilisateur vient faire reposer sa tête ou sa poitrine. Il est réglable en longueur en s'emmanchant plus ou moins profondément dans le manche du corps de l'appareil pour s'adapter aux différentes morphologies. 2. Le corps de l'appareil (2) dans lequel s'emboîte le flotteur avant, qui comporte un flotteur étanche dans sa partie supérieure, et un logement creux dans sa partie inférieure pour recevoir la partie mécanique. 3. Le boîtier mécanique (3) qui comporte les pédales, et un renvoi d'angle qui entraîne l'arbre d'hélice. Il est vissé sous le corps de 40 l'appareil. 4. L'hélice (4) fixée sur l'arbre d'hélice. 5. La tuyère (5) solidaire du corps et qui entoure l'hélice. L'appareil selon l'invention est particulièrement destiné à la pratique des sports nautiques et de plage. 45 50 55 60 flat stomach, easily, quickly and by means of moderate muscular effort. Many current devices use either muscle strength, such as flippers for example, or external sources of energy, such as underwater scooters with electric or thermal propellers. If similar devices exist in different forms, they do not allow a simple, easy and efficient use as the present invention whose forms, ergonomics, equilibrium in water and stability allow. The present invention has an innovative character because it is here to use with ease in the water the pedaling movement mechanically driving a propeller. This movement is doubly effective because of its ergonomics and power. The user moves quickly and effortlessly with a choice of head in or out of the water. Once the device in the water, on the surface of which it floats, the user lies flat on his stomach, chest or head on the front float and feet on the pedals. To increase the efficiency, the ergonomics and the technique of the apparatus have been optimized, so that the pedaling position is comfortable and that the device solid, that is to say able to withstand in particular the efforts of torsion resulting from the pedaling movement, and stable, because otherwise the movements of the body or the rotational torque of the propeller tend to overturn the device. Stability is enhanced by the distribution of masses and floating parts. The performance results from technical choices on the propeller, the speed of rotation and the use of a nozzle, Kort type nozzle, eliminating the edge effect. The apparatus consists mainly of five parts: 1. The float (1) before which the user comes to rest his head or chest. It is adjustable in length by slotting more or less deeply into the handle of the body of the device to adapt to different morphologies. 2. The body of the apparatus (2) in which fits the front float, which has a sealed float in its upper part, and a hollow housing in its lower part to receive the mechanical part. 3. The mechanical housing (3) which includes the pedals, and a bevel gear that drives the propeller shaft. It is screwed under the body of the device. 4. The propeller (4) attached to the propeller shaft. 5. The nozzle (5) integral with the body and which surrounds the propeller. The apparatus of the invention is particularly intended for the practice of water sports and beach. 45 50 55 60

Claims

1. Device for moving in the water characterized in that it comprises a front float (1) on which a user comes to rest his head or his chest, a body (2) in which is fitted the front float (1) and under which is screwed a mechanical housing (3) having pedals and a bevel gear which drives a propeller shaft.

2. Device according to claim 1 characterized in that the body (2) comprises a sealed float in its upper part and a hollow housing in its lower part to receive the mechanical housing (3).

3. Device according to one of claims 1 and 2 characterized in that the float (1) is adjustable in length by getting more or less deep into the handle of the body of the device (2) to adapt to different morphologies.

4. Device according to one of claims 1 to 3 characterized in that it is equipped with a nozzle assembly (5) and propeller (4) of the Kort type. 30