FR2506619A1 - Swim fin with zones for propulsion - has half truncated cones with wide base at front to trap water - Google Patents

Swim fin with zones for propulsion - has half truncated cones with wide base at front to trap water Download PDF

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Publication number
FR2506619A1
FR2506619A1 FR8110751A FR8110751A FR2506619A1 FR 2506619 A1 FR2506619 A1 FR 2506619A1 FR 8110751 A FR8110751 A FR 8110751A FR 8110751 A FR8110751 A FR 8110751A FR 2506619 A1 FR2506619 A1 FR 2506619A1
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FR
France
Prior art keywords
profiles
zones
fin
propulsion
sector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR8110751A
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French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR8110751A priority Critical patent/FR2506619A1/en
Priority to IT12536/82A priority patent/IT1159160B/en
Publication of FR2506619A1 publication Critical patent/FR2506619A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B31/00—Swimming aids
    • A63B31/08—Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs
    • A63B31/10—Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs held by, or attachable to, the hands or feet
    • A63B31/11—Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs held by, or attachable to, the hands or feet attachable only to the feet

Abstract

The swim fin has zones to give propulsion that can be varied according to the strength of the push. The fin has a supple flexible part (10) in the middle and reinforcing ribs (3,4) on each side. Between these there are two sections in the shape of half truncated cones (5,6). The wide base of these (7,8) is at the front of the fin and their narrow bases (15,16) join a rigid section (14) at an angle of 30 degrees. Along the point of junction of the fin and the rigid section is a line of articulation (13).

Description

L'objet de l'invention concerne un dispositif fonctionnel de voilure de palme de natation. The object of the invention relates to a functional device for swimming palm sails.

Il est destiné à créer des zones propulsives à surface et volume de déplacement, inclinaison et nervosité variant suivant l'intensité de la poussée. It is intended to create propulsive areas with surface and volume of displacement, inclination and nervousness varying according to the intensity of the push.

Dans les dispositifs connus, les voilures de palmes étaient généralement constituées par une voilure tendue entre des nervures de raidissement évitant les déformations. In known devices, the blades of the fins were generally constituted by a blade stretched between stiffening ribs avoiding deformations.

Le dispositif suivant l'invention permet de faire varier la surface de poussée et le volume de fluide déplacé ainsi que l'inclinaison des surfaces propulsives suivant l'intensité de la poussée le tout, afin d'utiliser intégralement la force musculaire tout en réduisant la fatigue. The device according to the invention makes it possible to vary the thrust surface and the volume of fluid displaced as well as the inclination of the propulsive surfaces according to the intensity of the thrust, in order to fully use the muscular force while reducing the tired.

Il est constitué par la combinaison d'une voilure souple structur & ntre deux nervures latérales par l'intermédiaire de deux profils demi troncs côniques souples symétriquement disposés dont la grande ouverture est orientée vers l'avant de la palme. It is constituted by the combination of a flexible wing structure & ntre two lateral ribs by means of two symmetrically arranged flexible conical half-trunk profiles whose large opening is oriented towards the front of the palm.

Sur les dessins annexés, donnés à titre d'exemple non limitatif, d'une des formes de réalisation de l'objet de l'in Invention
La figure 1 est une vue en plan de la palme dans son ensemble.In the accompanying drawings, given by way of nonlimiting example, of one of the embodiments of the object of the invention
Figure 1 is a plan view of the palm as a whole.

La figure 2 représente le même objet vu en coupe longitudinale. Figure 2 shows the same object seen in longitudinal section.

La figure 3 est une coupe transversale des profils fonctionnels. Figure 3 is a cross section of the functional profiles.

Les figures 4 et 5 représentent les déformation de la palme lors des poussées propulsives. Figures 4 and 5 show the deformation of the palm during propulsive thrusts.

La palme figure 1 comporte la poche de pied 1 et la voilure 2 délimitée par les nervures latérales 3, 4. The palm in FIG. 1 comprises the foot pocket 1 and the wing 2 delimited by the lateral ribs 3, 4.

De part et autre des nervures sont positionnés des profils 5, 6, de section demi troncs côniques dont les grandes bases 7, 8, sont orientées vers l'extrémité antérieure 9 de la voilure 10. Les petites bases 15, 16 des demi cônes jointent la surface résistance 14.  On either side of the ribs are positioned profiles 5, 6, of section of half conical trunks whose large bases 7, 8, are oriented towards the anterior end 9 of the airfoil 10. The small bases 15, 16 of the half cones join the resistance surface 14.

La surface 10 située entre les nervures et les sections demi troncs côniques est lisse et souple ainsi qu'élastique. The surface 10 located between the ribs and the half conical trunk sections is smooth and flexible as well as elastic.

La poche de pied est implantée à environ 300 référence 11, par rapport à la voilure 10, ceci afin que la palme soit a peu près naturellement dans le prolongement du tibia du nageur, afin d'utiliser la force musculaire à propulsion dès le déplacement de la jambe. The foot pocket is located at approximately 300 reference 11, relative to the blade 10, this so that the palm is almost naturally in the extension of the swimmer's tibia, in order to use the propelled muscular force as soon as the movement of leg.

Sous l'effet de la poussée,de la souplesse, de 1' élasticité de la voilure 10 et des profils 5, 6, l'ensemble des surfaces s ' incurve suivant les lignes 11, 12, avec l'abaissement ou le relèvement de la jambe du nageur. Under the effect of the thrust, the flexibility, the elasticity of the airfoil 10 and of the profiles 5, 6, the set of surfaces curves along the lines 11, 12, with the lowering or raising of the swimmer's leg.

Cette incurvation se produit d'abord le long du secteur 10 (Fig 1) jusqu'à ce que les nervures 3, 4, commencent à s'incurver à partir du la ligne de flexion 13, alors que le secteur résistant 14 déjà incliné à 30 ne fléchit que dans des proportions moindres. This curvature first occurs along the sector 10 (FIG. 1) until the ribs 3, 4 begin to curl from the bending line 13, while the resistant sector 14 already inclined to 30 only bends in lesser proportions.

Ce secteur constitue une zone de tension différente, résistante et donnant la puisance propulsive à la palme ce qui évite tout effet de cloquage ou de perturbation anarchique. This sector constitutes a zone of different tension, resistant and giving propulsive power to the palm which avoids any blistering effect or anarchic disturbance.

C'est donc bien par la combinaison de la voilure souple et élastique 10 située entre les profils demi troncs côniques
5, 6, disposés symétriquement de part et d'autre des nervures 3, 4 et en prolongement du secteur 14 résistant que se caractérise l'invention. La nervure 17 s'appuie sous le talon diminuant d'une façon non négligeable la fatigue du coup de pied.It is therefore good by the combination of the flexible and elastic canopy 10 located between the half conical trunk profiles.
5, 6, arranged symmetrically on either side of the ribs 3, 4 and in extension of the resistant sector 14 that is characterized by the invention. The rib 17 is supported under the heel significantly reducing the fatigue of the kick.

Toutefois les formes, dimensions et dispositions des différents éléments pourront varier dans la limite des équivalents comme d'ailleurs les matières utilisées pour leur fabrication sans changer pour cela la conception générale de l'invention qui vient d'être décrite.  However, the shapes, dimensions and arrangements of the various elements may vary within the limit of the equivalents, as moreover the materials used for their manufacture without thereby changing the general design of the invention which has just been described.

Claims (2)

REVENDICATIONS 10 Dispositif fonctionnel de voilure de palme de natation destiné à créer des zones propulsives à surfaces et volumes de déplacement variant suivant l'intensité de la poussée se caractérisant par la combinaison d'une voilure souple et élastique (10) située entre deux profils demi troncs côniques (5, 6) dispo sés symétriquement de part et d'autres des nervures longitudinales de renforcement (3, 4) et dans le prolongement d'un secteur (14) résistant.CLAIMS 10 Functional fin blade for swimming designed to create propulsive areas with surfaces and displacement volumes varying according to the intensity of the thrust, characterized by the combination of a flexible and elastic blade (10) located between two half profiles conical trunks (5, 6) symmetrically arranged on either side of the longitudinal reinforcing ribs (3, 4) and in the extension of a resistant sector (14). 20 Dispositif suivant la revendication 1 se caractérisant par le fait que les profils demi troncs côniques (5, 6) ont leur grande base (7, 8) orientée vers l'avant de la palme alors que leur petite base (15, 16) jointe le secteur rigide (14) incliné à 300. 20 Device according to claim 1 characterized in that the half conical trunk profiles (5, 6) have their large base (7, 8) oriented towards the front of the palm while their small base (15, 16) attached the rigid sector (14) inclined at 300. 35 Dispositif suivant la revendication 1 se caractérisant par le fait que la poche de pied est implantée à environ 300 par rapport à la voilure (2), angle que fait la plante du pied par rapport à l'axe du tibia, cheville en extension. 35 Device according to claim 1 characterized in that the foot pocket is located at about 300 relative to the airfoil (2), angle made by the sole of the foot relative to the axis of the tibia, ankle in extension. 40 Dispositif suivant la revendication 1 se caractérisant par le fait que la voilure souple (10) prolonge le secteur rigide (14) et forrne à son point de jonction, une ligne d' articu- lation (13) jointant les petites bases (15, 16) des profils demi troncs côniques (5, 6).  40 Device according to claim 1, characterized in that the flexible wing (10) extends the rigid sector (14) and forms at its junction point, an articulation line (13) joining the small bases (15, 16) half conical trunk profiles (5, 6).
FR8110751A 1981-05-27 1981-05-27 Swim fin with zones for propulsion - has half truncated cones with wide base at front to trap water Withdrawn FR2506619A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8110751A FR2506619A1 (en) 1981-05-27 1981-05-27 Swim fin with zones for propulsion - has half truncated cones with wide base at front to trap water
IT12536/82A IT1159160B (en) 1981-05-27 1982-05-18 SWIMMING FIN

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8110751A FR2506619A1 (en) 1981-05-27 1981-05-27 Swim fin with zones for propulsion - has half truncated cones with wide base at front to trap water

Publications (1)

Publication Number Publication Date
FR2506619A1 true FR2506619A1 (en) 1982-12-03

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Family Applications (1)

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FR8110751A Withdrawn FR2506619A1 (en) 1981-05-27 1981-05-27 Swim fin with zones for propulsion - has half truncated cones with wide base at front to trap water

Country Status (2)

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FR (1) FR2506619A1 (en)
IT (1) IT1159160B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4541810A (en) * 1983-10-28 1985-09-17 Wenzel Clarence E Swimming apparatus
EP0160261A2 (en) * 1984-05-03 1985-11-06 The Sumitomo Bank, Limited Swim fin provided with a self-shaping, fluid flow conveying and controlling canal-like member
FR2689404A1 (en) * 1992-02-14 1993-10-08 Tabata Co Ltd PALM OF SWIMMING AND PROPULSION, CONSISTING OF ELASTIC MATERIALS, BOTH HARD AND MOUS.
US5813889A (en) * 1997-02-25 1998-09-29 Alan Perry Expandable swim flipper
EP0884073A2 (en) * 1997-06-13 1998-12-16 Salvas Sub spa Swim fin

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411165A (en) * 1966-12-12 1968-11-19 Frank N. Murdoch Swim fin
FR2115724A5 (en) * 1970-11-25 1972-07-07 Forjot Roland
FR2332083A1 (en) * 1975-11-19 1977-06-17 Nicoloso Umberto Reinforcement wire mesh welding machine - with cutting shears, bending press and transfer device for cross wires

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411165A (en) * 1966-12-12 1968-11-19 Frank N. Murdoch Swim fin
FR2115724A5 (en) * 1970-11-25 1972-07-07 Forjot Roland
FR2332083A1 (en) * 1975-11-19 1977-06-17 Nicoloso Umberto Reinforcement wire mesh welding machine - with cutting shears, bending press and transfer device for cross wires

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4541810A (en) * 1983-10-28 1985-09-17 Wenzel Clarence E Swimming apparatus
EP0160261A2 (en) * 1984-05-03 1985-11-06 The Sumitomo Bank, Limited Swim fin provided with a self-shaping, fluid flow conveying and controlling canal-like member
EP0160261A3 (en) * 1984-05-03 1986-07-16 Amf Mares S.P.A. Swim fin provided with a self-shaping, fluid flow conveying and controlling canal-like member
AU577850B2 (en) * 1984-05-03 1988-10-06 Amf Mares S.P.A. Swim fin
US4887985A (en) * 1984-05-03 1989-12-19 Amf Incorporated Swim fin provided with a self-shaping, fluid flow conveying and controlling canal-like member
FR2689404A1 (en) * 1992-02-14 1993-10-08 Tabata Co Ltd PALM OF SWIMMING AND PROPULSION, CONSISTING OF ELASTIC MATERIALS, BOTH HARD AND MOUS.
US5813889A (en) * 1997-02-25 1998-09-29 Alan Perry Expandable swim flipper
EP0884073A2 (en) * 1997-06-13 1998-12-16 Salvas Sub spa Swim fin
EP0884073A3 (en) * 1997-06-13 1999-12-01 Salvas Sub spa Swim fin

Also Published As

Publication number Publication date
IT8212536A0 (en) 1982-05-18
IT1159160B (en) 1987-02-25

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