• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Variable geometry swimming fin suitable for the four swimming styles, which can be used as a conventional fin for the crol, back and butterfly swimming styles, and as a fin for the breaststroke style, at the user's discretion. The fin is formed by a shoehorn and a removable shovel, both independent elements. The removable blade is attached to the footwear by means of a tongue and groove coupling in two possible positions, in order to displace the greatest amount of water and thus increase the speed. When adopting the crol, back and butterfly swimming styles, the removable paddle should be placed horizontally or parallel to the surface of the water. For the breaststroke swimming style, the removable shovel should be placed in an upright position based on the surface of the water. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2735634A1
    申请号:ES201930842
    申请日:2019-09-30
    公开日:2019-12-19
    发明作者:Manzano Jorge Morato；Bobo Pedro Armisen；Diaz Maria Del Mar Recio
    申请人:Universidad Politecnica de Madrid；
    IPC主号:
    专利说明:

    [0001]
    [0002] Variable geometry swimming fin suitable for all four swimming styles.
    [0003]
    [0004] SECTOR OF THE TECHNIQUE
    [0005] The present invention is in the sector of design, manufacturing and development of products for swimming pool training.
    [0006]
    [0007] The object of the present invention is a variable geometry swimming fin intended to be used in the four existing swimming styles: crol, butterfly, back and breaststroke; in order to improve swimming technique and increase swimmer performance.
    [0008]
    [0009] BACKGROUND OF THE INVENTION
    [0010] Swimming fins are an accessory or tool that is located on the foot, which offers greater displacement and speed to the swimmer, while improving physical fitness.
    [0011]
    [0012] From the beginning of the modern age, there is evidence of the existence of swimming fins, since drawings can be seen in the Atlantic Codex of Leonardo da Vinci. But it was in 1914 when the fins were invented as we know them today, thanks to French corvette captain Louis Marie de Corlieu. The Frenchman patented his "propulsion paddles" in 1933, but it was not until mid-1940, when they began to be marketed in the United States under the name of "swimfins". These were acquired mainly by the army to be used by military divers in Operation Neptune during the landing in Normandy in 1944.
    [0013]
    [0014] Throughout these years, the only considerable advances that have been made are linked to the incorporation of new materials such as carbon or glass fibers, as well as polymeric materials. The rest of the advances have focused mainly on the shape of the fin, that is, on modifications of its geometry, to improve usability, aesthetics and hydrodynamics.
    [0015]
    [0016] Regarding the state of the art, the following invention patents are noteworthy and not limited to:
    [0017] - US20030148855A1: "Apparatus and method for developing a suitable swimming whip kick and training competitive arm."
    [0018] - KR20120017727A: "Swim fin for breaststroke".
    [0019] - US4521220A: "Swim fin for swimmers of breaststroke".
    [0020]
    [0021] In this way, the vast majority of existing swimming fins share the same base geometry, where only the crol, butterfly and back styles benefit, leaving aside the breaststroke style as the movement of legs is different from the others.
    [0022]
    [0023] In the style of crol, butterfly and back, the movement of the legs has two phases, an ascending phase and a descending phase. Although in crol and back, the movements of the legs are alternate, that is, they move in contraphase, and in the butterfly style, the legs move in phase. The ankles remain relaxed, an aspect that will cause the feet to rotate slightly inwards for a good propulsion and, therefore, perform the fin effect. However, the movement of the legs in the breaststroke style has two phases: the flexion phase and the extension phase, related directly to the propulsion. In the flexion phase the kick is prepared with the flexion of the hips, knees and an external rotation of the feet. The extension phase involves a backward extension of the legs with an internal rotation of the feet at the last moment of the kick. This last action is very important to achieve an optimal propulsion result, since it is directly proportional to the volume of water displaced by the foot.
    [0024]
    [0025] To explain the present invention, swimming styles will be divided into two groups depending on the movement of the legs:
    [0026]
    [0027] - Group 1: Creole, butterfly and back styles.
    [0028] - Group 2: breaststroke style.
    [0029]
    [0030] The fin models that currently exist and that allow the kick to be carried out in the four swimming styles, have a similar geometry, where the shape of the paddle has been modified so that it can be used for breaststroke, saving from this way, the interference between them during the phases of the kick. However, to date, none of the existing patents incorporates what is developed in the present invention, which, in addition, implies an increase in speed when swimming, assuming this a great advance and differentiation in the sector.
    [0031]
    [0032] EXPLANATION OF THE INVENTION
    [0033] In order to solve the problems mentioned above, the object of the present invention is presented below. This refers to the design of a swimming fin of variable geometry that allows it to be used in the four existing swimming styles: crol, back, butterfly and breaststroke.
    [0034]
    [0035] In this way, a non-existent solution is proposed to the problem posed on the existence of a multipurpose swimming fin, which allows it to be used for the four swimming styles, but without forgetting the fin objectives. These objectives would be to help improve and improve the swimming technique, as well as to improve the physical fitness of the swimmer by toning the muscles.
    [0036]
    [0037] In accordance with all of the above, the detailed explanation of the fin geometry is carried out.
    [0038]
    [0039] The developed fin consists of two pieces that correspond to each of the main parts of the fin:
    [0040]
    [0041] - A footwear: it is a part of the fin where the foot is introduced.
    [0042] - A removable shovel: it is a part of the fin that is used for the displacement of water so that the swimmer increases the speed when swimming and therefore the advance.
    [0043]
    [0044] The fin assembly is composed of the union of both pieces, which can be removed at will, thus facilitating walking with the footwear placed on the foot by the pool and the storage of the fin assembly. With the help of a joining mechanism, located at the end of the footwear, the removable paddle is positioned in one of the two possible positions, depending on the style you want to swim.
    [0045]
    [0046] The joining mechanism consists of a tongue and groove, preferably with a quadrangular section, where the removable blade contains a male element, and the footwear contains a female element (female guide) comprising lateral walls that delimit a prismatic hole to fit the element inside. male.
    [0047]
    [0048] The male element of the removable blade is formed by a prismatic body, where at each of its lateral faces there is at least one flange whose section Transversal has a right triangle shape.
    [0049]
    [0050] On the other hand, the female element of the footwear includes the side walls that have four rectangular anchor holes, which cross each of the side walls, so that said holes are configured to fit the tabs of the male element of the removable blade in order to provide a safety anchor and prevent the separation of both parts: footwear and removable shovel.
    [0051]
    [0052] The separation of the blade and the footwear is possible due to the existence of two pairs of opposing tongues, located in the female element of the footwear, close to the rectangular anchoring holes, where the tabs of the male element of the removable blade would fit. The deformation caused by pulling each of the tabs allows the release of the corresponding tab. Repeating the operation to release each of the eyelashes, the separation of both pieces (footwear and removable shovel) from the fin would be achieved.
    [0053]
    [0054] Depending on the position of the removable paddle with respect to the footwear, the fin would be suitable for swimming in one of the groups (1 and 2) of swimming styles described above in the background section of the invention.
    [0055]
    [0056] - Position 1: the major surface of the removable blade is in a substantially horizontal position. This is the right position for swimming in the swimming styles of group 1 (crol, butterfly and back styles).
    [0057] - Position 2: the major surface of the removable paddle is in an upright position, being suitable for the swimming style of group 2 (breaststroke style).
    [0058]
    [0059] The shoe has lateral water release holes that are configured to discharge the water from inside the shell structure of the shoe.
    [0060]
    [0061] The shoe includes a water-guided guidance channel that is located in a longitudinal direction along said shoe in coincidence with the instep of the user's foot.
    [0062]
    [0063] The removable shovel includes a centered main channel of water guidance, and two secondary collateral channels of water guidance located on both sides of the main channel. The three mentioned channels of the removable blade are located on a first face of the removable blade opposite a second face of said removable blade; where all three Channels are configured to guide the water along them.
    [0064]
    [0065] The removable blade includes ribs with transverse incisions; where the ribs are located on the second face opposite the first face of the removable blade (2).
    [0066]
    [0067] In a functional position, when a user makes use of the fins, said ribs would be located at the bottom or inside of the fin, depending on the swimming style, and whose function is to return the impulse generated in The swimming kick. The removable blade has a decreasing cross-section, from its initial end where the male element is located, in the area closest to the footwear, to the final end (opposite the initial end) of said fin, to increase flexibility, thus allowing, greater displacement of water during the swimming kick.
    [0068]
    [0069] It should be noted that the reason for placing the removable paddle in two different positions for each of the groups of swimming styles, is because the removable paddle must be in a position such that it displaces a greater volume of water, and therefore, generate greater momentum. Using the fins for an unsuitable swimming style would not generate any momentum, further increasing the risk of injury.
    [0070]
    [0071] On the other hand, the possibility of separating both pieces allows reducing the space when storing and transporting the fins, as well as the ability to walk without problems.
    [0072]
    [0073] In this way, there is a clear advantage in relation to the prior art, differentiating the present invention from the fins known until now, by allowing the use of these in the four existing swimming styles and, not only for the styles of crol, back and butterfly. Therefore, it incorporates, at the user's discretion, the possibility of being used also in the braza style.
    [0074]
    [0075] BRIEF DESCRIPTION OF THE DRAWINGS
    [0076] With the intention of complementing the description of the present invention and in order to help a better understanding of the characteristics of the same, a set of drawings is attached as an integral part of said description, where illustrative and non-limiting, has represented the following:
    [0077] Figure 1.- It shows a top perspective view of the set of the swimming fin of variable geometry suitable for the four swimming styles, object of the invention. In this figure 1, the fin is mounted to be used in swimming styles: crol, back and butterfly.
    [0078] Figure 2.- Shows a top perspective view of the fin assembly to be used in the breaststroke swimming style.
    [0079] Figure 3.- Shows an exploded perspective view of the flap comprising a shoehorn and a removable blade.
    [0080] Figure 4.- It shows a detail view of a mechanism for joining the footwear and the removable blade by means of a tongue and groove coupling, where a male element can be seen in the removable blade and a female element in the footwear.
    [0081]
    [0082] Below is a list of the references used in the figures:
    [0083]
    [0084] 1. - Footwear
    [0085] 1st.- Female element
    [0086] 2. - Removable shovel
    [0087] 2nd.- Male element
    [0088] 3. - Elastic strip
    [0089] 4. - Side water release hole
    [0090] 5. - Water guide channel of the foot pocket
    [0091] 6. - Tab
    [0092] 7. - Main water guide channel of the removable blade
    [0093] 8. - Secondary water guide channel of the removable blade
    [0094] 9. - Anchor tab
    [0095] 10. - Anchor holes
    [0096] 11. - Ribs
    [0097] 11a.- Transversal incisions
    [0098]
    [0099] PREFERRED EMBODIMENT OF THE INVENTION
    [0100] The present invention relates to a swimming fin of variable geometry, which can be used for the swimming of the crol, back and butterfly styles as represented by figure 1, and for the breasted swim as represented by the figure. 2. In view of the previous figures 1 and 2, it can be seen how the fin is constituted by two main pieces: a shoehorn (1) and a removable blade (2) that are detachable with each other by means of a tongue and groove coupling.
    [0101] Each fin is composed of a non-adjustable shoe (1), preferably made of polymeric material, whose function is to house a user's foot. The adjustment of the fin to the user's foot, with an open heel, is determined by an elastic strap (3) that allows it to adapt to the size of the user's foot by hugging said bare heel.
    [0102]
    [0103] In turn, the shoe (1) has lateral holes (4) for releasing water, which allow the accumulated water to be discharged inside said shoe (1). Longitudinally along the footwear (1), a water guide channel (5) is incorporated, whose main function is to facilitate the circulation of water along said channel (5) during the swimming kick. Said channel (5) is located in coincidence with the instep of the user's foot when the fin of the invention fits.
    [0104]
    [0105] Next, there is the other piece of the fin, such as the removable blade (2). This removable blade (2) follows a variable longitudinal section, from greater to lesser thickness from an initial end that corresponds to the area closest to the shoehorn (1) where the tongue and groove coupling is made, to an end end (opposite the end initial). The removable blade (2) comprises a part that includes a first face and a second face that is opposite the first face.
    [0106]
    [0107] This variable section gives the removable paddle (2) greater flexibility that allows greater displacement of water during the swimming kick. Like the shoehorn (1), the removable blade (2) longitudinally includes a main channel (7) centered on water guidance, and two secondary channels (8) collateral for water guidance, which allow water circulation to along said channels, main 7 and secondary 8; where the three channels (7, 8) are located on the first face of the removable blade (2); and where the main channel (7) is located in a central between the secondary channels (8).
    [0108]
    [0109] With the aim of providing greater stability and rigidity to the removable blade (2), it includes ribs (11) on its second face, opposite the first face, on which the main (7) and secondary channels are located (8). The ribs (11) have a series of transverse incisions (11a) that help return the momentum generated by the swimming kick.
    [0110] In the same way that the footwear (1), the removable blade (2), is preferably made of a polymeric material, due to the elastic and adaptability properties so that it offers a correct hydrodynamic thrust in the cycle of kick corresponding to each swimming style.
    [0111]
    [0112] The attachment mechanism of the footwear (1) and the removable blade (2) is determined by the tongue and groove coupling, composed of a male element (2a) belonging to the removable blade (2) and a female element (1a) located in the footwear (1). In figure 4, where a detailed view of both elements (male (2a) and female (1a) is shown, the configuration of the male element (2a) can be seen, which comprises a prismatic body of quadrangular section (without ruling out other polygonal sections) having anchor tabs (9) located on each of the lateral faces of said prismatic body. Said tabs (9) have a section in the form of a right triangle.
    [0113]
    [0114] The female element (1a) is located at a first end of the footwear (1) opposite a second end where the elastic strip (3) is located. Said female element (2a) comprises a prismatic hollow delimited by four side walls that have rectangular anchoring holes (10), which cross each of the side walls of the female element (1a); where said holes (10) are configured to fit in them the tabs (9) located in the male element (2a). The main function of this engagement of the eyelashes (9) inside the holes (10) is to prevent the separation of both parts: footwear (1) and removable blade (2).
    [0115]
    [0116] The manual separation of both of the shoehorn (1) and the removable blade (2) is facilitated by two pairs of opposed tabs (6) that are integral to the outer faces of the side walls of the female element (1a) of the shoehorn (1) ; where said tabs (6) are close to the rectangular anchor holes (10), where the tabs (9) of the removable blade (2) fit. Through the deformation of the female element (1a) when the fingers (10) are operated with the fingers of the hand, it is possible to separate both components (footwear and removable blade) from the fin of the invention, allowing it to be extracted from that mode the removable blade (2) with respect to the footwear (1).
    权利要求:
    Claims (1)
    [0001]
    1. - Variable geometry swimming fin suitable for the four swimming styles , crol, back, butterfly and breaststroke; comprising a footwear (1) with an enveloping structure that is configured to house inside a user's foot; where the shoe (1) includes a first end that corresponds to the toes and a second end that corresponds to the heel of the foot; characterized in that it comprises a removable blade (2) that is configured to be detachably coupled as a longitudinal continuation of the shoehorn (1) in coincidence with the first end of said shoehorn (1) by means of a safety anchor connection mechanism; where the removable blade (2) adopts a position selected between a first substantially horizontal position parallel to the surface of the water, and a second position located in a substantially vertical plane with respect to the horizontal surface of the water; and where the removable blade (2) includes two opposite faces: first and second.
    2. - Variable geometry swimming fin suitable for the four swimming styles , according to claim 1, characterized in that the attachment mechanism between the shoe (1) and the removable paddle (2) comprises a tongue and groove coupling in the form of a regular prism rectum that is configured by a male element (2a) and a female element (1a) that includes a prismatic hollow delimited by side walls.
    3. - Variable geometry swimming fin suitable for the four swimming styles , according to claim 2, characterized in that the safety anchor comprises a retention device that includes:
    - tabs (9) located on the side faces of the male element (2a);
    - anchoring holes (10) located on the side walls of the female element (1a); where said holes (10) are configured to fit the tabs (9) therein as means to immobilize the removable blade (2) to the foot pocket (1).
    4. - Variable geometry swimming fin suitable for the four swimming styles , according to one of the preceding claims 2 or 3, characterized in that the female element (1a) has two pairs of opposed tabs (6) that are located next to the anchor holes (10); where said tabs (6) are integral to the outer faces of the side walls of the female element (1a) of the footwear 5. - Variable geometry swimming fin suitable for the four swimming styles , according to one of the preceding claims, characterized in that the shoehorn (1) has lateral holes (4) for releasing water that are configured to discharge the water inside the shell structure of the footwear (1).
    6. - Variable geometry swimming fin suitable for the four swimming styles , according to one of the preceding claims, characterized in that:
    - the shoe (1) includes a channel (5) centered for guiding the water that is located in a longitudinal direction along said shoe (1) coinciding with the instep of the user's foot;
    - the removable blade (2) includes a main channel (7) centered on water guidance, and two secondary channels (8) water-guided collateral located on both sides of the main channel (7);
    where the three channels (7, 8) are located on the first face of the removable blade (2) opposite a second face of said removable blade (2); and where the three channels (7,8) are configured to guide the water along them.
    7. - Variable geometry swimming fin suitable for the four swimming styles , according to one of the preceding claims, characterized in that the removable paddle (2) includes ribs (11) with transverse incisions (11a); where the ribs (11) are located on the second face opposite the first face of the removable blade (2).
    8. - Variable geometry swimming fin suitable for the four swimming styles , according to any one of claims 2, 3 or 4, characterized in that the female element (1a) is located in the footwear (1) and the male element (2a) is located on the removable shovel (2).
    9. - Variable geometry swimming fin suitable for the four swimming styles , according to previous claims 2, 3 or 4, characterized in that the female element (1a) and the male element (2a) comprise a prismatic configuration of quadrangular section .
    10. - Variable geometry swimming fin suitable for the four swimming styles , according to claim 3, characterized in that the tabs (9) comprise a triangular cross-sectional profile, preferably in the form of a triangle rectangle.
    Ċ
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    同族专利:
    公开号 | 公开日
    ES2735634B2|2020-09-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4264994A|1977-07-06|1981-05-05|Carbone Giovanni M|Articulated flippers for hands and feet, with a surface variable during swimming|
    WO2000062868A1|1999-04-16|2000-10-26|Hollywood Hopeful Productions, L.L.C.|Convertible amphibious shoes for swimming and walking|
    WO2007000394A1|2005-06-27|2007-01-04|Stig Kristensson|Swim fin|
    WO2012008880A1|2010-07-15|2012-01-19|Dmitry Gladyshev|Quadrofin|
    US20160030810A1|2014-08-03|2016-02-04|Jezekiel Ben-Arie|Swimming device with retractable fins|
    法律状态:
    2019-12-19| BA2A| Patent application published|Ref document number: 2735634 Country of ref document: ES Kind code of ref document: A1 Effective date: 20191219 |
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201930842A|ES2735634B2|2019-09-30|2019-09-30|Variable geometry swimming fin suitable for all four swimming strokes|ES201930842A| ES2735634B2|2019-09-30|2019-09-30|Variable geometry swimming fin suitable for all four swimming strokes|
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