DE2101479A1 - Swim fin - Google Patents

Description

7241
eh / s eh.

21QU79

PATENT L NGES BY CARL H. HÄUSER 7 STUTTGART HAU PTMAN NS REUTE

Nemrod Metzeier S.A., Barcelona (Spain)

Swim fin

The invention relates to a swimming fins with a pocket that accommodates the swimmer's foot

In general, swimming fins offer resistance when used in the water, the size of which is determined by the size of the area of the fin. Accordingly, the movement of the swimmer's legs is correspondingly slow, because the swimmer cannot fully utilize the advantages that result from the propulsion, _etc.

The invention is based on the object of creating a swim fin which applies a negative pressure the contact surface of the swimmer's foot with the liquid mass through which the displacement occurs the mass of water retained in the area of this zone is relieved. Achieved

109844 / OUO

7241 - 2 -

210U79

PATENT ENGINEER CARL H. H A U S E R 7 STUTTGART H A U P T M A N N S R E U T E

this is done by one or more channels, the flow cross-section of which starts from the inflow opening is widened in the area of the foot pocket to the drainage opening at the front edge of the fin. Through this Channels is the bending stress exerted by the swimmer and thrust is fully utilized, or an equivalent displacement is achieved with a lower Swimmer fatigue achieved

The channels wider than in the drainage zone in their inflow zone, allow the liquid flowing through in the area of the outflow zone a higher Speed, and there is a constant current, which is the displacement of the water through Suction of the mass of water that one wishes to turn off causes · Canals can be at the top or lower surface of the fin or on both surfaces, these being provided by stiffening walls are separated from each other

In order distortion of the fin in the area of the channels to prevent the fins along their lateral edges may each with a marginal web and parallel to the symmetrical axis of the fin on either side of the channels with mutually offset ribs may be provided · The ridges direct the fin at their at their upper side Movement through the repressed

1098U / OUO

7241 - 3 -

210U79

P AT ENT ENGINEER CARL H. HÄUSER 7 STUTTGART HAU PTMAN NS REUTE

Water flow, just like the ribs act as Directional stabilizers and prevent displacement of the fins to one side or the other without to inhibit their movement. The edge webs of the fin give it a certain strength »

In the drawing, the swimming fin according to the invention is illustrated using an exemplary embodiment, namely show Jj

Fig «1 is a plan view of the swim fin in Partial cut,

FIG. 2 shows a longitudinal section of the same and FIG. 3 shows a functional illustration.

In the illustrated embodiment, the fin

with 4 and the one receiving the swimmer's foot

Bag labeled 10, which is almost the rear

Half of the fin occupies » '' -M

The fin 4 is bordered by edge webs 5 and white on its surface stabilizing ribs 6, which parallel to the longitudinal axis of the fin and offset from one another. Both sides of the longitudinal axis are closed Arranged channels 7, which are separated from one another by a partition 8, which has a central Reinforcing rib forms.

The inflow openings 9 of the two channels 7 are located

109844/01 ^ 0

7241 - 4 "

PATENT ENGINEER CARL H. HAUSER 7 STUTTGART HAUP TM ANNSREUTE

see in the area of the front end of the bag 10, while the drainage openings 11 at the front edge of the Fin are provided. The flow area of the The channel 7 widens from the inflow opening 9 in the direction of the outflow openings 11.

There are projections on both sides of the pocket 10 12 for attaching buckles 13, with which the tab 14 for buckling on the foot of the swimmer is releasably attached.

In Fig. 3, the flow profile of the water is at the Use of the swimming fins, ve rans chau cht by means of direction arrows

The edge webs 5, like the stabilizing ribs 6, can be on one or the other or on both Provided on the sides of a fin.

1098U / I1U0

Claims (3)

7241
ch / s oh 210U79 PATENT ENGINEER CARL H. H A U S E R 7 STUTTGART H A U P TM A N N S R E U T E 46 Claims i) Swim fin with a swimmer's foot Pocket, characterized by one or more channels (7), the flow cross-section of which is based from the inflow opening (9) in the region of the pocket (10) to the drainage opening (11) on the front edge of the fin (4) extended towards isto 2) Swimming fin according to claim 1, characterized in that » that the channels (7) are separated from one another by stiffening walls (8) 3) swim fin according to claims 1 and 2, characterized in, that the fin (4) on its upper side along its side edges with an edge web (5) and parallel to the axis of symmetry of the fin on both sides of the channels (7) is provided with ribs (6) arranged offset to one another.