| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 441055000 | SWIMMING AID TO INCREASE STROKE EFFICIENCY | 48 |
| 441056000 | Hand attached, held, or worn | 13 |
| 20130052894 | SWIMMING AID - A swimming aid is provided that includes an expandable element and a securing element for securing the swimming aid to a user. The expandable element moves between a collapsed configuration and an expanded configuration. The swimming aid is constructed and arranged such that movement through water in a first direction causes the expandable element to move to the expanded configuration and movement in a second direction, substantially opposite to the first direction, causes the expandable element to move to the collapsed configuration. | 02-28-2013 |
| 20090318041 | SWIMMING AID - A device for use in swimming comprising an elongate elastic member for positioning on the posterior forearm of a swimmer's arm, a first attachment means for attaching one end to a distal portion of the arm near the hand or wrist of the swimmer, and a second attachment means for attaching the other end to an intermediate portion of the arm near the swimmer's elbow. The device vibrates and creates turbulence on the posterior side of the forearm, enabling the swimmer to modify his or her stroke to maximise the generated turbulence, encouraging correct stroke technique. | 12-24-2009 |
| 20120009833 | Technical Aid Swimming Hand Paddles - Disclosed is a unique concept of a handheld swimming paddle containing a pivoting member with an attached angled section, which provides instant resistive and visual feedback when a swimming stoke is not properly executed. Such feedback allows the unique paddle to act as a technical aid for all levels of swimmers, as well as a device to build the correct muscles required to swim with proper stroke mechanics through constant monitoring. The disclosed invention will introduce resistance that will impede the swimmer's forward progress only when a pull is not properly executed, which means that it will be easier for the swimmer to execute a full proper stroke rather than swim with poor mechanics. Additionally, the disclosed invention will assist in the proper hand placement and orientation at the beginning of the stroke. | 01-12-2012 |
| 20110111655 | Two Fin Swimming Apparatus - The swimming apparatus pertains to swimming with special equipment for swimmers and divers and can be used for increasing speed, comfortable maneuvering, and making swimming more economical. The swimming apparatus comprises a tail fin, a hand-held fin and a dual snorkel. | 05-12-2011 |
| 20080242167 | AQUATIC PROPULSION DEVICE FOR SWIMMERS - An aquatic propulsion device for holding a hand or foot in a desired position, the device comprising a curvilinear support surface and a linking element arranged across the hand or foot joint at a desired angle to secure the joint in the desired position. | 10-02-2008 |
| 20080214073 | Hand paddle - This invention is intended as an improved swimming aid for the hand. It is a ridged paddle having several features to enhance the paddles' performance for enjoyable swimming. The paddle has a finger tip hood that permits the fingers to extend unobstructed through finger facing apertures. The paddle has a wrist portion having a wrist strap. A thumb notch formed at a lateral end, by the palm potion of the paddle. The palm portion has a Transverse Ridge, that together with two lateral flanks form a triangle of three major bends at the palm. And, with two bends for the finger apertures and finger tip hood, change the paddles' shape from a flat surface to a three dimensional form, that deflect water, adds structural strength, and aids in hand comfort. | 09-04-2008 |
| 441057000 | Having finger stalls (e.g., gloves) | 4 |
| 20090075536 | Swimming glove - A hand covering for controlling the stroking power of hand is provided. The hand covering includes a tubular shaped body-cover for bringing the hand in a covered state. The hand covering includes one or more insert members disposed within the body-cover of the hand covering. The insert members extend the body-cover beyond the fingers. Further, one or more slits are provided on the body-cover for bringing the hand in an exposed state from the covered state. The exposed state allows the hand covering to be rolled back onto the wrist of the user. | 03-19-2009 |
| 20090280703 | Strap-on swimming fin - A strap-on swimming fin apparatus configured for removable engagement with a person's limb, the apparatus having an elongate strap with a pair of mutually engagable surface fasteners, the strap configured for secure removable engagement around the limb. An extremity cover, such as a glove or bootie, is joined flexibly to a side edge of the first strap and is configured for engaging an associated extremity, such as a hand or foot. A pair of fins are secured to a top surface of the strap in opposing positions, thereby improving the person's thrust through the water as well as their ability to maneuver, while simultaneously allowing for full unobstructed use and articulation of both the limb and extremity. | 11-12-2009 |
| 20110081813 | Recreational Swimming Ensemble - Disclosed herein are apparatus and methods for enhancing swimming and facilitating walking on land. In some embodiments, the apparatus includes a foot thong having a body and a toe tether. The apparatus can include a swim fin device having a sole portion, toe portion, and fin portion, wherein the sole portion and toe portion cooperate to define an opening for receiving the toe tether to secure the swim fin device to the foot thong. Additionally disclosed herein is a recreational swimming ensemble comprising the swim fin device(s), the swimming glove(s), and/or a mask configured to be secured to goggles, wherein a common theme can be distributed across the swim fin device, swimming glove, and mask. | 04-07-2011 |
| 20080242168 | Webbed finger sheaths for swimming aid - An improved “webbed finger sheaths for swimming aid” comprises the unitary integral body of truncated tubular structure and the web membrane, which being disposed between the longitudinal central lines on the lateral sides of the adjacent truncated tubular structures such that having same structure on both of the palmar side and back side for suitability of left-hand and right-hand, wherein, both ends of said truncated tubular structure are open not only to enable the fingers smoothly wearing through inside but also to let the fingertips protruding expose out for having the dexterity and maneuverability of the fingers during practical operation; And, said web membrane has at least one groove configured for sufficient flexibility; Moreover, at least one raised blade is configured on said web membrane, which being disposed between the adjacent truncated tubular structures, to increase the paddling effect. | 10-02-2008 |
| 441058000 | Secured to hand by strap | 3 |
| 20110165804 | BREASTSTROKE SWIMMING TRAINING PADDLES WITH FINS - A training paddle for use by a swimmer comprises a base configured to accommodate a hand of the swimmer. A strap holds the base to the hand. A raised fin that extends upward from the base directs water away from flowing between the hand and the base. | 07-07-2011 |
| 20120094560 | SWIM PADDLE TRAINING AID APPARATUS - A swim training aid apparatus including a relatively thin plate member having a first and second surface separated by a leading edge on one end of the plate member, and a trailing edge on an opposite end. The leading edge is such that when the training aid apparatus is operationally mounted to the swimmer's hand, the swimmer is capable of articulating at least their intermediary phalanges of the hand over the leading edge, to a gripping position. The trailing edge is configured to extend proximally past the wrist joint of the swimmer The plate member includes wrist recess formed and dimensioned for articulating receipt of the swimmer's wrist joint therein. A retaining device cooperates with the plate member and the swimmer's hand to releasably retain the same to the training aid apparatus in the operating position. | 04-19-2012 |
| 20080200083 | Swimming maneuverability device - A swimming manuerverability device which assists a person in swimming, exercising, floating, maneuvering, or the like thereof in shallow and/or deep water. The swimming manuerverability device includes a base having at least one aerodynamic surface, a first restraining device for attaching the base to a user's arm, and a second restraining device for attaching the base to a user's hand. Optional buoyant material of the swimming device allows a person to swim, exercise, float, maneuver, or the like thereof in shallow water while keeping the user's head and/or upper torso out of the water. Alternatively, the base may be comprised of a ballast material to assist a user in staying below the surface of the water while maneuvering. In yet another embodiment of the invention, the base may be comprised of a neutrally buoyant material. | 08-21-2008 |
| 441060000 | Leg attached | 4 |
| 20110217890 | SWIMMING DEVICE FOR A SWIMMER OR DIVER - A swimming device ( | 09-08-2011 |
| 20110250806 | Shin Fins - Shin Fins are for the lower part of the leg, instead of the foot. The bridge alone attached to the swimsuit will produce a forward thrust, just as standard fins do. Yet, for Shin Fins with the pad bracket, bridge, fins and fin tips on the forward and reverse strokes, the water is funneled between the leg and fin along the bridge towards the foot. As the water passes over, under, and around the funneling tips of the fin, the water is directed over and under the foot, not just around the foot. On both forward and reverse strokes, the funneling tips cut through the water and funnel water above and below the foot, providing thrust on both directions of strokes. | 10-13-2011 |
| 20110104968 | RETRACTABLE SWIM FINS - Retractable swim fins that attach to the legs of a swimmer to aid movement through the water. In one example embodiment, a retractable swim fin includes an upper support frame, a lower support frame, and a sliding assembly connecting the upper support frame to the lower support frame. The upper support frame is configured to be attached to the front of a swimmer's lower leg. The lower support frame includes means for aquatic propulsion and is configured to extend, in a swimming position, to a position beneath the sole of the swimmer's foot. The lower support frame is also configured to retract, in a walking position, to a position above the sole of the swimmer's foot. The walking position enables the swimmer to walk barefoot on a surface without the lower support frame substantially contacting the surface. The sliding assembly is configured to allow the lower support frame to retract. | 05-05-2011 |
| 20120252289 | SWIM FINS - A swim fin is herein presented. The swim fin can include a frame and one or more louvered blades coupled to the frame. The swim fin can additionally or alternatively include a proximal mount coupled to a proximal portion of the frame and configured to attach to the leg of a swimmer, and a distal mount coupled to a distal portion of the frame and configured to attach to the leg, foot, or the ankle of a swimmer. | 10-04-2012 |
| 441061000 | Foot attached | 31 |
| 20090149093 | Swim Shoe With Lateral Fins - A swim shoe comprising a foot-covering portion and a pair of lateral fins located on opposing sides of the foot-covering portion, where said lateral fins do not extend beyond the front of the foot-covering portion. The lateral fins may further extend upward from the foot-covering portion and include a bend a particular distance from the foot-covering portion such that the lateral fins extend outward from the foot-covering portion. The swim shoe may additionally comprise a secondary pair of lateral fins located below the first pair. The secondary lateral fins may further extend upward from the foot-covering portion and include a bend a particular distance from the foot-covering portion such that the secondary lateral fins extend outward from the foot-covering portion. | 06-11-2009 |
| 20120064785 | SWIM FIN | 03-15-2012 |
| 441063000 | With lock or latch | 2 |
| 20110065343 | DETACHABLE SWIM FIN - A detachable swim fin includes a foot pocket and a fin blade. The fin blade is movably connected to the foot pocket through a locking buckle mechanism. With the detachable design of the fin blade and the foot pocket, the present invention provides an amphibious function. When they are detached, the foot pocket is capable of protecting the foot when walking on land, like a beach shoe or a fishing shoe. When they are assembled, the present invention is used as a swim fin. When going out, the user could take apart the swim fin for carrying conveniently and flexibly. This provides a compact and light design. | 03-17-2011 |
| 20090305587 | Swimming fin with heel strap fastening buckle - A swimming fin comprising a blade extending from a shoe open at its rear side, and a rear heel strap connected to the sides of the shoe by at least one buckle, the buckle having a base plate integral with the shoe. A buckle arm is joined with the strap so as to allow adjustment of the strap's tension, an intermediate lever being connected pivotally to the base plate and the arm. A reversible attachment member is also provided for connecting the intermediate lever to the base plate to achieve closure of the buckle. Between the intermediate lever and the base plate, a disengageable articulation member is provided for reciprocal engagement between them, a pivotal connection, and, at the same time, for allowing their separation in a direction opposite to that of tensioning the strap. In this manner, the intermediate lever may be separated from the base plate following release of the attachment member, and disconnection of the disengageable articulation member. | 12-10-2009 |
| 441064000 | Flipper | 27 |
| 20100075554 | SWIM FINS - Swim fins that attach to the legs of a swimmer to aid movement through the water. In one example embodiment, a swim fin includes an upper support frame, a lower support frame, a lower blade attached to the lower support frame, and at least one hinge assembly connecting the upper support frame to the lower support frame. The upper support is configured to be generally positioned along and attached to the front of a swimmer's lower leg between the swimmer's knee and ankle The lower support frame is configured to extend, in a swimming position, from a position proximate the swimmer's ankle to a position beyond the end of the swimmer's foot. The at least one hinge assembly allows the lower support frame to be rotated upward from the swimming position to a walking position. The walking position enables the swimmer to walk barefoot on a surface without the lower support frame nor the lower blade substantially contacting the surface. | 03-25-2010 |
| 20130090028 | SWIM FIN ATTACHMENT - The present invention is generally directed to a swim fin generally including a fin blade and a bootie, the bootie including a foot pocket configured to receive a user's foot and ankle, the foot pocket attached to the top surface of the fin blade; and a strap system including one or more straps pulling the user's foot and ankle into the foot pocket toward the distal edge of the fin blade and down against a top surface of the fin blade. Some aspects of the present invention may also include a foot pocket formed from a first portion having a first elastic characteristic connected to the top surface of the fin blade; and a second portion having a second elastic characteristic portion disposed at least on a portion of the top surface of the foot pocket, the second elastic characteristic being greater than the first elastic characteristic. | 04-11-2013 |
| 20130059492 | FLIPPERS, BOOTS, SYSTEMS INCLUDING SAME, AND METHODS OF USING SAME - A first flipper has a base, a deformable fin connected to the base, and a first spreader that imposes a first force on the fin that causes the fin to spread in response to relative movement between the first spreader and the fin caused by a first longitudinal deflection of the fin relative to the base. A second flipper has a fin and a foot coupling portion connectable to a foot holding portion of a boot to couple a foot in the foot holding portion to the flipper. A first system includes the flipper and the boot. Methods of using the flippers, the boot, and the system are also disclosed. | 03-07-2013 |
| 20120289105 | Reverse thrust swimming flipper - The Reverse Thrust Flipper is a swimming flipper similar to a regular swimming (scuba diving, exercise, recreational) flipper that has the function of generating thrust in the opposite direction to the swimmers direction. The purpose of this flipper is to allow the swimmer to exercise without the need of a large body of water. The flipper's reverse thrust reduces de forward movement while still requiring the swimmer to exert the same amount of work. Its oscillating fin makes it possible to produce the reverse thrust in both the upward and downward leg strokes, thus maximizing the work out and enabling a simulated forward swimming experience. | 11-15-2012 |
| 20090176421 | Shoe and a flipper set-up - A shoe, in particular a beach shoe, and a flipper set-up, which shoe has a lower portion, and which flipper set-up comprises a fin part and a fixing part, said lower portion comprising first connecting members and said fixing part comprising second connecting members, said first and second connecting members together forming a releasable connecting mechanism permitting said flipper set-up to be releasable secured to said shoe, characterized in that said lower portion has two side portions, said first connecting members being formed by first rails, which first rails extend along said two side portions, said fixing part comprises a pair of arm members forming a bay, said second connecting member being formed by second rails, which second rails extend along said bay, said first and second rails being slidably engageable with each other so as to enable the shoe to slide into the flipper set-up. | 07-09-2009 |
| 20100099312 | SWIM FIN - A swim fin that changes down kick force is revealed. The swim fin worn over the foot to aid movement through the water includes a footpocket and a flat fin blade. The flat fin blade extends from the front part of the footpocket and has an upper blade surface and a lower blade surface. At least one blade surface is disposed with two fin ribs arranged symmetrically. By being embedded with heavy objects inside the fin rib, the weight of the swim fin is increased so as to increase the force of the swim fin acted on the water by kicking. This favors down kick of legs and the propelling force of kick is increased so that the user is allowed to move faster in the water with the swim fin. | 04-22-2010 |
| 20090170388 | Amphibious shoe and method of use - An amphibious shoe has a sole with a fin compartment therein. The fin compartment provides retractable housing for a lightweight fin for conversion from a walking to swimming shoe. In one embodiment the amphibious shoe includes a fin comprising a plurality of ridges. The ridges are intermittently disposed between material arranged in an accordion construction. When ejected from the compartment, the ridged material expands to a fan configuration. The fan is further appointed with a pivotal stabilizing strap for enhanced stability during swimming. In another embodiment the amphibious shoe includes at least two fin plates pivotally attached about an axis. The fin plates are stowed in an overlapping condition. They are capable of being ejected from the compartment and opposingly rotated toward the front of the shoe abutting to form a swim fin. In operation, the wearer can comfortably run or walk swiftly along the land as the integrated fin has a thin lightweight construction. Upon reaching the water's edge, the shoe is readily converted for swimming by ejecting and positioning the fin. | 07-02-2009 |
| 20090137166 | Multi-use adjustable bellows-shaped aperture strap - A strap with tapered-apertures for open-heeled swim fins is stretched from a first end connection to a conventional boss-button and boss-post structure, whereby the strap will apply a desired level of force as a holding-pressure against the heel of a swimmer. The strap's tapered-apertures are cast to link the tapered dimensions of aperture walls to an easy passage of the strap over the boss button and to a highly resistant passage of the strap-top to a designed seat against the top's raised arches. The manufactured formation of the unique aperture shapes result in an unexpected elasticity of the strap. The combination of aperture structure within the raised arches guide the orifice walls of the aperture into compression, instead of tension, greatly resisting forces to release the strap from the boss-posts and buttons. | 05-28-2009 |
| 20090325434 | SWIM FIN - A swim fin includes a foot pocket and a blade portion. The blade portion includes a top surface and a bottom surface. An opening is disposed through the blade portion to permit an enhanced directional fluid flow between the top and the bottom surface. A top bevel is disposed in the top surface and surrounds the opening. The top bevel includes a trailing and a leading top bevel area to compress the fluid flow. | 12-31-2009 |
| 20100015865 | SWIMMING FIN OF THE KIND PROVIDED WITH A FOOT POCKET OPEN AT THE HEEL ZONE - Swimming fins of the kind comprising a foot pocket provided with a outsole and an upper closed at the tip and open at the heel zone, for lodging with slight clearance the feet of a scuba diver wearing diving booths, characterised by the fact that the outsole and/or the upper sections of the said fins are provided with a number of through holes. | 01-21-2010 |
| 20090053947 | SWIMMING AID DEVICE - A swimming aid device comprising of a convertible bi/mono swim fin containing a first fin, a second fin and coupling means. The present invention can be used as traditional independent swim fins or combined together to form a bi-swim fin in which both swim fins are held together to aid the swimmer in performing feet unison-style swim kicks such as a dolphin kick. | 02-26-2009 |
| 20100120304 | Swim Fin Device - Disclosed herein are apparatus and methods for enhancing swimming and facilitating walking on land. In some embodiments, the apparatus includes a foot thong having a body and a toe tether. The apparatus can include a swim fin device having a sole portion, toe portion, and fin portion, wherein the sole portion and toe portion cooperate to define an opening for receiving the toe tether to secure the swim fin device to the foot thong. | 05-13-2010 |
| 20110117801 | FLIPPER EQUIPPED WITH AN ASYMMETRICAL FLEXING WING SECTION - The invention relates to a flipper comprising a bootee extended to the front by a flexible wing section, at least one flexible element placed in the direction of the length under the flexible wing section and securing means arranged between the proximal part of the flexible element and the proximal part of the flexible wing section. | 05-19-2011 |
| 20100317246 | ADJUSTABLE FIN - An adjustable fin apparatus includes an elongated blade portion and elongated first and second frame members adapted for pivotal connection to the blade. An adjustment system for the first and second frame members rotates the pivotal connection of the frame members with respect to the blade. A thin web of a flexible polymeric material extends between the first frame member and the blade portion and between the second frame member and the blade portion. | 12-16-2010 |
| 20110151733 | BODY SURFING SUIT - Apparatus and methods for body surfing which provide the body surfer a means to stabilize his ride and control his direction/position on a wave are described herein. According to one aspect, a body surfing apparatus includes a body suit having a torso and legs; a plurality of fins located on the torso; and one or more fins located laterally on the legs. The fins are preferably attached to the body suit via an adhesive or mechanical means and the fins and suit are preferably covered with a buoyant layer, the buoyant layer having a minimum thickness of 1 mm. | 06-23-2011 |
| 20110014830 | Swimming shoe - A swimming shoe includes a shoe unit comprising two spaced hook members pivotably formed on either side, each of the hook members including a projection on one surface facing either a heel portion of the shoe unit or a toe portion thereof; and two side boards hingedly secured to both sides of the shoe unit respectively, each of the side boards comprising two spaced rectangular through holes each shaped in conformity to the adjacent hook member. Ends of the hook members are directly above the through holes. Thereafter, upward pivoting the side boards to pass the hook members through the through holes will cause inner surfaces of the through holes to be lockingly urged by the projections. The ends of the hook members are adapted to dispose in a position besides the through holes by pivoting. | 01-20-2011 |
| 20100003874 | FLIPPER - A flipper for swimming or underwater activities or muscular training, includes a blade and a shoe, the ends of which facing one another are dynamically and kinematically separate. The blade has extensions projecting backwardly and fixed to the shoe in areas substantially corresponding to its central part. Elastic tier rods are provided between the blade and the front part of the shoe and are designed to control angular variations between the blade and the shoe. | 01-07-2010 |
| 20100279562 | Hybrid Water Sport Apparatus - An apparatus includes an upper portion, a sole and a fin. The upper portion is configured to at least partially cover a foot. The sole is coupled to the upper portion and defines a cavity. The fin has a first portion and a second portion. The fin is movable between a first configuration and a second configuration. When in the first configuration, the fin is substantially within the cavity defined by the sole, and the first portion of the fin at least partially overlaps the second portion of the fin. When in the second configuration, the fin extends substantially outside the cavity defined by the sole. | 11-04-2010 |
| 20100029153 | Swim or diving fin - A swim or diving fin includes a footpocket for housing a foot, a blade extending from the front end of the footpocket member, a frame member extending for at least a portion of the blade. The frame member or members includes a closed loop perimetric rim member having two opposite longitudinal branches delimiting an inner hollow region and also having one or more transversal bridges connecting the longitudinal branches. The blade is connected to the frame member at one or more of the transversal bridges and/or at least at one or more ends of the rim member. | 02-04-2010 |
| 20100029152 | HYBRID WATER SPORT FOOTWEAR - An apparatus includes an upper portion, a sole and a fin. The upper portion is configured to at least partially cover a foot. The sole is coupled to the upper portion and defines a cavity. The fin has a first portion and a second portion. The fin is movable between a first configuration and a second configuration. When in the first configuration, the fin is substantially within the cavity defined by the sole, and the first portion of the fin at least partially overlaps the second portion of the fin. When in the second configuration, the fin extends substantially outside the cavity defined by the sole. | 02-04-2010 |
| 20110312231 | Swim Fin Boot - A swim fin boot includes a fin portion having a body member and a pair of opposed side rails, each side rail including an extension segment connected to a proximal end of the body member and extending away therefrom, respective extension segments being spaced apart from and parallel to one another. Each side rail includes a boundary segment connected to body portion peripheral edges, the body portion extending between the side rail boundary segments. A boot member includes an ankle portion defining an open top configured to selectively receive insertion of a person's foot. The boot member includes a foot portion connected to a lower end of the ankle portion defining an interior cavity configured to receive the person's foot when inserted into the ankle portion, the foot portion being connected to respective side rail extension segments such that the fin portion and the boot member have a unitary construction. | 12-22-2011 |
| 20120115377 | High Efficiency Swim Fin using Multiple High Aspect Ratio Hydrodynamic Vanes with Pliable Hinges and Rotation Limiters - Apparatus, devices and methods of using and operating multiple high aspect ratio hydrodynamic horizontal ladder oriented vanes with pliable hinges and rotation limiting flexible webs that are attached between flexible support beams on swim fins. The fins can have a foot pocket for attaching to a swimmer or diver's foot. A pair of roughly parallel support beams can be secured to the foot and toe portion of the foot pocket and support a plurality of hydrofoil vanes therebetween in a resisted pivotal arrangement. Pivotal rotation of the hydrofoil vanes can be restricted by flexible membranes, between the hydrofoil vanes and the support beams, to provide an optimum angle of attack for the hydrofoil vanes during a swimming stroke. Methods for increasing lift and decreasing turbulence and drag on hydrofoils and swim fins part of the fins. The fins can have at least one pivoting vane region connected to the fin with a flexible hinge member made from reduced vane cross sectional area, and injection molding of the flexible material of the foot pocket. Methods are provided for limiting the rotation of at least one of the pivoting vanes using flexible web members between the vanes and the support beams. Methods for forming flexible hinges with pivotal resistance to encourage propulsion during small kick movements and at kick reversal points are included. Injection molding assembly methods with chemical bonds and mechanical bonds are provided. A novel method for manufacturing a swim fin having a complex articulated system with few injection molding steps is also included. | 05-10-2012 |
| 20120071047 | Heel Strap for Swimming Flippers of the Open-Shoe Type - Heel strap ( | 03-22-2012 |
| 20100273371 | Swim Fin - A swim fin includes a foot cover, a fin blade, and a pair of reinforcement ribs extending from two sides of the foot cover. The fin blade is disposed between the pair of the reinforcement ribs and fixedly connected to the pair of the reinforcement ribs. Each reinforcement rib includes a front rib portion, a middle rib portion, and a rear rib portion. The rear rib portion has a bottom fixedly connected to the foot cover. The middle rib portion has at least a cavity extending axially and a spring in the cavity to improve the resilience of the reinforcement rib. The spring has two ends connected to the front rib portion and the rear rib portion, respectively. The one spring or the plurality of springs in the reinforcement rib of the present invention is to replace a conventional solid reinforcement rib, with the property of the spring to improve the resilience of the reinforcement rib. The swim fin of the present invention provides a better resilience for a user to consume less energy and to advance greatly, achieving the advantages of effort-saving and good flexibility. | 10-28-2010 |
| 20090088036 | SWIMMING FLIPPER - Swimming flipper comprising a shoe part from which two ribs extend laterally, and a fin part, characterised in that said fin part is connected at one end to said shoe part, while its other end is constrained to said ribs in the vicinity of their ends, the sides of said fin part being at least partly not constrained in any way to the said side ribs, all of which so that during the active and passive phases of the flipper movement the free part and the constrained part of the said fin bend in the opposite directions forming substantially an S shape. | 04-02-2009 |
| 20100203779 | AMPHIBIOUS SHOE AND METHOD OF USE - An amphibious shoe has a sole with a fin compartment integrated therein retractably houses of a lightweight fin that converts the shoe from a walking shoe to a swimming shoe. The amphibious shoe includes a fin comprising ridges intermittent between material arranged in an accordion construction. The fin is capable of being ejected from the compartment and expanded to a fan configuration. The shoe is further provided with a pivotal stabilizing strap for enhanced stability during swimming. In one embodiment the fin is removed by a release button in communication with a spring. Other embodiments provide for manual deployment by pulling on the fin from the fin compartment. In operation, the wearer can comfortably run or walk swiftly along the land as the integrated fin has a thin lightweight construction. Upon reaching the water's edge, the shoe is readily converted for swimming by ejecting and positioning the fin. | 08-12-2010 |
| 20130023168 | Fin - A fin comprising a foot pocket, two ribs and a web portion is provided in this invention. The foot pocket has a surrounding portion and a base portion, which together define a foot receiving space. The surrounding portion has a plurality of first and second structures; the ribs extend forwards from two sides of the foot pocket respectively; and the web portion is formed between the two ribs. The first structures and the second structures are alternately arranged, and a first thickness of each of the first structures is thicker than a second thickness of each of the second structures. Thereby, the foot pocket of the fin is made flexible and elastic for swimmers or divers with different foot forms and sizes. | 01-24-2013 |
