DE1989748U - FLOAT RIB. - Google Patents

Description

., .__ ^ ΑΖ / 5ίΓ09 · ί45.

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Lod ovlco. .3Si [ABES , Bapallo, Italy. .

Swim fin ".".: ..

The innovation relates to a swim fin made of elastic material, such as rubber or plastic, with one for receiving of the puss serving, attachable thereon and one piece formed integrally with the puss part, from this forward extending, leaf-like main fin, whereby from the middle and / or rear section of the main fin smaller ones directed in the same direction as the main fin, at their rear end with this and / or with the pus part coherent and both upwards and downwards Auxiliary flps, which can be elastically bent from the plane of the main fin, releasing a corresponding flow opening are cut out.

The known swim fins of this type have a single, Auxiliary fin cut out of the main fin and extending over almost the entire width of the same. the As a result, the main fin becomes weakened and excessively shows an uneven curve when swimming on. In addition, there are undesirable and disruptive lateral bending of the main fin.

The task of the innovation is to fix these tile parts and to create a swim fin of the type mentioned above, their main fin by cutting the auxiliary fins is weakened significantly less and also in that by the incised auxiliary fins weakened area

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has a more even curve course with the exclusion of lateral bending phenomena.

According to the innovation, this object is achieved in that two on either side of a middle, longitudinal, upper one and / or lower reinforcing rib of the main fin, symmetrically arranged auxiliary fins are provided, which in turn ■ each have an upper and / or lower, longitudinal reinforcing rib, and that the longitudinal ribs of the main fin and of the two auxiliary fins, one steadily from the pus part in the direction of the free front end of the respective fin have decreasing height and / or width and merge backwards into the pus part «......,

An embodiment of the innovation is in the drawing shown. Show it;

Pig. 1 - a plan view of an innovation according to the invention Swim fin.

Pig. 2 - the swim fin in a pictorial representation, in plan view and with the main and bent downwards Auxiliary fins.

i'ig. 3 - the swim fin in a pictorial representation, Seen from below and with the main .and Auxiliary fins. · - ■■■ ·

The swim fin shown consists of a shoe-like puss part 1 that is used to hold the puss and from a sheet-like, from the pus part 1 nach.vorne

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extending main fin 2. The pus part 1 and the main fin 2 are made in one piece of elastic material, e.g. rubber or made of plastic. It is also possible to use the pus part

1 pocket-shaped to accommodate. to train the forefoot alone and him with a rear strap around the heel or the like. to provide.

From the middle or rear section of the main fin

2 are two with the help of slot-like recesses 3 Cut out smaller auxiliary fins 4 lying next to one another, which have approximately the same circumferential shape as the main fin 2 and are aligned in the same direction with this, i.e. have a front free end and at their'Mnteren end with the Main fin 2 or related to the pus part 1. These Auxiliary fins 4, which are formed in one piece with the main fin 2 and with the pus part 1 and made of the same material of these parts are exactly like the anterior section of the main fin 2 in both directions, i.e. both in Above and below it can be bent elastically.

The main fin 2 and / or the auxiliary fins 4 are provided with longitudinal stiffening ribs 102 and 104, respectively, which can be arranged on the top and / or on the bottom of the fins. The width and / or height of these Stiffening ribs 102,104 take longitudinal direction from the foot part 1 steadily decreases towards the front free end of the main fin 2 until it disappears completely. At present the ribs

102,104 in the foot part 1 over.

When swimming and, for example, when the legs or legs are pointing upwards. Flap are both the front section of the main fin 2 and the two auxiliary fins 4 bent elastically downwards by the water pressure _? as shown in particular in FIG. The auxiliary fins 4 are bent out of the surface of the main fin 2 and release the corresponding openings 5. in the middle or rear section of the main fin 2, so that the water flows through these openings 5 and consequently through the middle or rear section of the Main fin 2 can flow through. At the same time, the bent auxiliary fins form 4 inclined surfaces, one with .. the bent front section. the main fin 2 caused "propulsion in the same direction generate additional propulsive force. When the leg or fin flap is directed downwards, the two auxiliary fins 4 bend elastically upwards in the same direction as the front section of the main fin 2, as shown in particular in FIG , form additional inclined surfaces described above and generate a corresponding additional propulsive force. In both cases, ie both the upward stroke and the downward stroke of the visual fin, the propulsive forces generated by the elastic-bent auxiliary fins 4 add up to that of the front section bent in the same direction the main fin 2 generated propulsive force _s whereby the efficiency of the

Claims (1)

Swimming fin is increased considerably, - "" ■ The central longitudinal rib 102 of the main fin 2 and the central longitudinal ribs 104 of the auxiliary fins 4, in conjunction with the transition of these ribs into the base part 1, cause a significant stiffening of the swim fin and compensate for the weakening of the main fin 2 caused by the incision of the auxiliary fins 4. As a result, there is a uniform curve of the main fin 2, also in the area weakened by the cut auxiliary fins 4. The aforementioned stiffening by the longitudinal ribs 102, 104 in connection with the arrangement of two auxiliary fins 4 on both sides. "Of the central longitudinal rib 102 of the main fin 2 also excludes undesired lateral bending of the main fin 2. ■■■ '■'■■."",. . -SCHUTZAW 5 EBUOH A swim fin of elastic material such as rubber or plastic, with a for receiving the foot serving, ■ it can be fastened Pussteil and integral with the base part formed, extending therefrom forwardly _s' sheet-like main fin, wherein from the middle and / or - ■ posterior section of the main fin smaller, in the same direction f with the main fin.-oriented, at its rear end with: this and / or connected with the foot part and both upwards and downwards from the surface of the main fin, releasing a corresponding flow opening, auxiliary fin ^ which can be elastically bent, are cut out, ■ - - β - V characterized in that two on either side of a middle, longitudinally straightened, upper and / or lower reinforcement rib. (102) of the main fin (2) symmetrically arranged auxiliary fins (4) are provided, which in turn each have an upper and / or have lower, longitudinal reinforcing rib (104), and that the longitudinal ribs (102,104) of the main fin (2) and the two auxiliary fins (4) steep one from the pus (1) in the direction of the free front end of the fin in question have steadily decreasing height and / or width and rearward-in the pus part (1) skip. ; - V