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.
The Reverse Thrust Swimming Flipper is an aquatic device that increases the stroke efficiency while inverting the direction of the thrust produced by the stroke. It is secured to the foot of the swimmer and includes a semi-flexible and oscillating water-contacting surface resembling webbed feet in appearance but reverse in operation.
Regular flippers have been developed for exercise purposes but they have the disadvantage of requiring a large body of water. This, because of the increased speed the swimmer acquires when using them. Other products have tried to reduce the size or modify the shape of the flipper to diminish the speed; this also reduces the resistance in the leg strokes. This, in turn, reduces the amount of resistance the swimmer exerts with each stroke and thus reduces the effectiveness of the exercise.
BRIEF SUMMARY OF THE INVENTIONThe main idea of the reverse thrust flipper is that through its reverse thrust the swimmer can effectively simulate the use of regular flippers for exercising and not have to have a large body of water. The exercise cessions can be done in smaller pools, rehabilitation tanks, lap pools, or other aquatic facilities.
With each leg stoke the swimmer (using reverse thrust flippers) produces a force opposite to the direction of regular swimming flippers. This force counters the forward-moving resultant force created by the legs and arm motion in customary swimming. The result of the opposite forces canceling is the need of less or no distance to be traveled to exert the same amount of work (exercise).
Having thus described the invention in general terms, reference will now be made to the accompanying drawings, which are not necessarily drawn to scale, and wherein:
The Reverse Thrust Swimming Flipper is a swimming flipper similar to those worn by scuba divers. The difference with these flippers is that instead of increasing the forward thrusts of the swimmer, they do the opposite by generating reverse thrusts with every movement of the user's legs. Similar to the way a jet airplane reverses the direction of the turbines after landing by redirecting the flow of air.
The Reverse Thrust Flipper is composed of two sections. See
The part of the Fin that produces de reverse trust is the Oscillating Fin. See
The flipper produces reverse thrust during the upward and downward leg strokes, during swimming. This is because the Oscillating Fin changes position with each change in direction of the leg stroke. When the swimmer's leg pushes upward, water pressure on the top side of the Oscillating Fin causes it to resist upward movement. See
Claims
1. An aquatic foot flipper that produces a reverse thrust to the swimmer allowing him to exercise with diminished forward movement. The use of which enables the swimmer to transform the energy delivered to the flippers trough the leg strokes into a water flow thrust that is opposite in direction to the swimmers direction. This thrust generates a force opposite to the direction of the forward-moving resultant force created by the legs and arm motion in customary swimming. The cancelation of these forces results in a decrease or elimination of forward movement.
2. The aquatic foot flipper according to claim 1, redirects water flow thrust, generated by the leg strokes, towards the direction of the swimmers heading.
3. A water contact fin that is hinged, by means of a flexible hinge or a pined hinge, to the end of a swimming flipper that allows the flipper assembly to redirect the flow of water in a direction opposite to a conventional flipper.
4. A water contact fin that is hinged, by means of a flexible hinge or a pined hinge, to the end of a swimming flipper according to claim 3, that allows movement of the fin in an upward and downward direction as to redirect the flow of water during downward and upward leg strokes without having to modify the flipper assembly.
5. The use of non permeable flexible membranes or film to connect the lateral sides of a hinged water fin to a flipper assembly so as to create a cavity and constrain the water flow created from a leg stroke in a direction opposite to the heading of the flipper (swimmer).
6. The use of non permeable flexible membranes or film to connect the lateral sides of a hinged water fin to a flipper assembly according to claim 5, so as to control de range of movement of a back hinged moving fin while allowing it to move freely during the transitional movements of the fin.
7. A rigid frame connecting a water shoe to a hinged moving (oscillating) fin and side flexible membranes with a minimal contact area that reduces the forward water thrust and transfers the forces from the shoe (swimmer) to the fin and the reacting forces from the fin to the shoe (swimmer).
Type: Application
Filed: May 9, 2011
Publication Date: Nov 15, 2012
Inventor: Gerardo Oscar Martinez (Laredo, TX)
Application Number: 13/068,311