High-speed water slide play equipment
The floatplane design with thrust plates addresses the challenge of high-speed water travel for those with less strength by using water resistance for propulsion, allowing stable and maneuverable gliding with minimal fatigue.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- 岡田 政寿
- Filing Date
- 2024-10-01
- Publication Date
- 2026-04-13
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Figure 2026064006000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a play equipment that slides rapidly on the water surface manually.
Background Art
[0002] Various play equipments that move on the water surface manually by using a buoyancy board have been developed. Surfboards and bodyboards that ride on the approaching waves and slide rapidly on the water surface from the offing to the shore are popular among a wide range of people as regular summer leisure or sports. However, when moving a long distance from the shore to the offing manually or chasing the approaching waves at high speed to ride on the wave crest, strong physical strength is required. Therefore, it is a leisure activity with high barriers for the elderly and women with poor physical strength. There is a demand for a play equipment that can move a long distance from the shore to the offing with less fatigue, and can slide rapidly on the water surface with less fatigue in order to catch up with the approaching waves. Existing play equipments that move on the water surface by using a buoyancy board include surfboards, bodyboards, and stand-up paddle boards.
[0003] A surfboard is a play equipment on which a rider lies in a prone position on the upper surface of a buoyancy board having a shape with small wave-making resistance that can support the total weight of the rider. When moving towards the offing or chasing the approaching waves, the surfboard is advanced by so-called paddling in which the rider scratches the water with both arms. When the rider catches up with the wave crest of the approaching waves, the rider stands up and maneuvers the surfboard. When the rider stands on the upper surface of the surfboard, no wave-making resistance is generated by the rider, and the surfboard can be freely maneuvered by the weight shift of the rider. However, when moving a long distance towards the offing or chasing the approaching waves, it is necessary to advance the surfboard by so-called paddling in which the rider scratches the water only with the strength of both arms in a prone position. Therefore, a large load is applied to both arms, and it is difficult for the elderly and women with poor physical strength to move towards the offing itself, and in some cases, they cannot catch up with the approaching waves because they cannot obtain sufficient speed.
[0004] A bodyboard is a recreational toy in which the rider lies prone on the top of a buoyancy board with a shape that minimizes wave resistance and can support the weight of the rider's upper body. When moving offshore or chasing incoming waves, the rider propels the bodyboard forward by paddling with fins, generating more thrust than paddling barefoot. Even after catching up to the crest of an incoming wave, the rider remains prone and steers the bodyboard. Because wave resistance is generated by the rider's lower body, it is not possible to freely control the bodyboard like a surfboard. However, because the rider's lower body is in the water, buoyancy is generated, and as a result, the bodyboard, being a buoyancy device, can be small and easy to carry. Also, since the rider does not stand on the top of the bodyboard, it can be less rigid than a surfboard. However, in order to generate more thrust by paddling with fins than the wave resistance generated by the rider's lower body, it is necessary to wear stiff and large fins, and a considerable amount of muscle strength is required.
[0005] Stand-up paddleboards are a form of recreation where the rider stands on a buoyancy board with a shape that minimizes wave resistance and can support the rider's entire weight. When moving offshore or chasing incoming waves, the rider propels the stand-up paddleboard forward by paddling with a long oar that reaches below the water's surface. This eliminates wave resistance from the rider, allowing for comfortable movement on calm water. However, it requires the rider to remain standing on a swaying stand-up paddleboard and to constantly paddle back and forth using a single long oar, primarily with upper body strength. Therefore, prolonged operation can be physically demanding for the elderly and women who may lack the physical strength. Additionally, to prevent the rider from falling due to the swaying of the stand-up paddleboard caused by side waves, the board needs to be wider than a surfboard or bodyboard, making it inconvenient to carry. [Prior art documents] [Patent Documents]
[0006] [Patent Document 1] Japanese Patent Application Publication No. 07-196093 [Overview of the Initiative] [Problems that the invention aims to solve]
[0007] The challenge we aim to solve is to improve public health by providing recreational equipment that allows elderly people and women, who may have less physical strength, to slide over long distances at high speeds with minimal fatigue. [Means for solving the problem]
[0008] The floatplane is composed of a front floatplane with a shape that minimizes wave resistance, a rear floatplane with a shape that minimizes wave resistance, and a connecting rail. The undersides of the front and rear floatplanes are equipped with thrust plate units that tilt backward when subjected to water pressure from the front, and extend vertically by their own weight when the water pressure from the front is removed, but do not extend further forward than the vertical direction. The front floatplane has a grip on its upper surface used to move the front floatplane forward and backward, and the rear floatplane has a footboard with an abutment band on its upper surface used to move the rear floatplane forward and backward. One of the front or rear floatplanes is fixedly connected to the connecting rail, and the floatplane on the non-fixed side has a mechanism that allows it to move back and forth along the connecting rail, thus allowing the gap between the front and rear floatplanes to be changed, and the rider can push the rear floatplane backward. The present invention provides a high-speed water gliding toy characterized by the following: the rider moves the rear buoyancy plate backward, deploying the thrust plates equipped on the thrust plate unit of the rear buoyancy plate; at the same time, the rider uses the reaction force of the water resistance on the thrust plates of the rear buoyancy plate to push the front buoyancy plate forward, causing the front buoyancy plate to glide at high speed on the water in the forward direction; the rear buoyancy plate, which is connected to the grip of the front buoyancy plate by the rider and an ab strap, also follows the front buoyancy plate and glides at high speed on the water; the rider pulls the front buoyancy plate back while it is gliding on the water, causing it to move backward and deploy the thrust plates equipped on the front buoyancy plate to obtain further thrust; and the rider uses the reaction force of the water resistance on the thrust plates of the front buoyancy plate to pull the rear buoyancy plate back, causing it to move forward and prepare for the next water gliding motion by moving the rear buoyancy plate backward. [Effects of the Invention]
[0009] The present invention's high-speed water-sliding toy comprehensively utilizes the major muscles of the human body to create a buoyancy board with low wave resistance on the water's surface, allowing the buoyancy board and its rider to glide at high speed. This enables even elderly people and women with less physical strength to travel long distances offshore or catch up with incoming waves at high speed with less fatigue.
[0010] Furthermore, in the water-sliding amusement ride of the present invention, since the sum of the buoyancy of the front buoyancy plate and the rear buoyancy plate is greater than the weight of the rider, the rider can rest in a comfortable posture when stopped and during water-sliding movements by resting their elbows on the front buoyancy plate and their knees on the rear buoyancy plate.
[0011] Furthermore, the water-sliding high-speed toy of the present invention allows riders to enjoy so-called surfing by standing up on the crest of a wave, by fixing and connecting the front and rear buoyancy plates with connecting pins or the like with the smallest possible gap between them.
[0012] Furthermore, when a rider rests in a prone position on the top surface of the buoyancy board, the long overall length of the play equipment provides good stability, while when enjoying so-called surfing in a standing position with the gap between the front and rear buoyancy boards minimized, the short overall length of the play equipment provides good maneuverability.
[0013] Furthermore, the footboard with an instep strap, provided on the upper surface of the rear buoyancy plate that constitutes the present invention, allows the rider to support the weight of their lower body with the soles of their feet and maintain a prone position, and enables the rider to easily perform the action of kicking the footboard out from the prone position and the action of pulling the rear buoyancy plate that has been kicked out backward back forward as a single, continuous motion.
[0014] Furthermore, the grips provided on the upper surface of the front buoyancy plate constituting the present invention allow the rider to support the weight of their upper body with both arms and maintain a prone position, transmit the reaction force of the water drag obtained by the rear buoyancy plate to the front buoyancy plate to provide propulsion to the front buoyancy plate, provide further propulsion to the front buoyancy plate by the reaction force of the water drag obtained by the rider's action of pulling back the front buoyancy plate while it is gliding on the water, and allow the rider to use the reaction force of the drag to pull back the rear buoyancy plate forward as a series of simple actions.
[0015] Furthermore, the present invention provides independent brake levers on the left and right sides of the grip of the front buoyancy plate, and when the rider pulls the brake lever, brake plates connected by wires or linkage mechanisms extend independently to the left and right from the sides of the front buoyancy plate toward the front, thereby receiving water resistance. This makes it easy to perform left and right turns and deceleration when gliding on water. It should be noted that "Prior Art Documents" "Patent Document" Japanese Patent Publication No. 07-196093 describes an invention that increases water resistance and reduces the forward speed of a boat by making deployable brake plates protrude from the bottom of a moving boat, but it is not an invention that allows the boat to turn freely to the left and right. [Brief explanation of the drawing]
[0016] [Figure 1] This is a three-view drawing of the equipment configuration of the playground equipment according to the present invention. [Figure 2] This is a three-view diagram showing the equipment configuration of the brake operating state of the playground equipment according to the present invention. [Figure 3] This is a top view of the thrust plate unit according to the present invention. [Figure 4] This is a cross-sectional view taken along line C-C in Figure 3. [Figure 5] This is a cross-sectional view taken along line B-B in Figure 3. The thrust plate is shown in an inverted position. [Figure 6] This is a cross-sectional view taken along line B-B in Figure 3. The thrust plate is shown in the deployed state. [Figure 7] This is an exploded view of the water-sliding motion according to the present invention. For illustrative purposes, the connecting rails are omitted. [Modes for carrying out the invention]
[0017] Figure 1 is a three-sided view of the equipment configuration of the play equipment according to the present invention, with the gap between the front buoyancy plate 1 and the rear buoyancy plate 2 minimized. The gap between the front buoyancy plate 1 and the rear buoyancy plate 2 is a mechanism that can be changed by the connecting rail 3. When the rider grasps the grip 4 and places the sole of the foot on the tread board 6, the rider can perform an operation of pushing the front buoyancy plate 1 forward in a prone position or kicking the rear buoyancy plate 2 backward. And when the rider pulls the feet in, by attaching the instep part of the rider's foot to the instep band 7, the rear buoyancy plate 2 can be easily pulled back forward. Also, the reference numeral 20 in Figure 1 is a mechanism for easily fixing the front buoyancy plate 1 and the rear buoyancy plate 2 at the position of the minimum gap. When a fixing pin penetrating the front buoyancy plate 1 and the rear buoyancy plate 2 is inserted, the insertion hole 20 for the fixing pin into which the fixing pin is inserted is shown. However, the means for easily fixing the front buoyancy plate 1 and the rear buoyancy plate 2 at the position of the minimum gap may be, for example, a method of using a string or a latch instead of the fixing pin. Incidentally, the upper surface tip parts of the front buoyancy plate 1 and the rear buoyancy plate 2 are each protruded forward from their lower surface tip parts for the purpose of reducing the wave-making resistance during forward movement and for the purpose of utilizing a part of the water resistance received during forward movement as buoyancy. Also, the rear end part of the front buoyancy plate 1 is protruded backward at the same angle as the tip part of the rear buoyancy plate 2 for the purpose of easily connecting the front buoyancy plate 1 and the rear buoyancy plate 2 by inserting, for example, a fixing pin penetrating the front buoyancy plate 1 and the rear buoyancy plate 2 vertically into the fixing pin insertion hole 20 when the gap between the front buoyancy plate 1 and the rear buoyancy plate 2 is the minimum gap.
[0018] Figure 2 is a three-sided view of the equipment configuration in the brake operating state of the play equipment according to the present invention, showing a state where a gap has occurred between the front buoyancy plate 1 and the rear buoyancy plate 2. When the rider pulls the left and right independent brake levers 5 provided on the grip 4 during water skiing, the brake plate 8 is deployed via a wire or a link mechanism 9 to generate water resistance, and it is a mechanism that enables the left and right turning operations and deceleration operations of the device of the present invention.
[0019] FIG. 3 is a top view of the thrust plate unit 10 according to the present invention. The thrust plate unit 10 incorporates a thrust plate 13 and components for deploying the thrust plate 13 inside a downward U-shaped structure formed by a top plate 11 and side frames 12. Note that the thrust plate unit 10 is fitted and fixed into the bottom recesses of the front buoyancy plate 1 and the rear buoyancy plate 2.
[0020] FIG. 4 is a C-C cross-sectional view of the thrust plate unit 10 according to the present invention. A rotating shaft 14 for the thrust plate 13 to perform a deployment operation is fixed at both ends to the side frame 12. A bearing 15 for the rotating shaft for the rotating shaft 14 is attached to the thrust plate 13. A deployment limit stopper 16 for the purpose of preventing the thrust plate 13 from deploying beyond the vertically downward direction is attached to the top plate 11, and a tipping limit stopper 17 as an operation limit when the thrust plate 13 is in the horizontal direction is attached to the side frame 12. Also, when there are multiple thrust plates 13, an opening / closing operation synchronization plate 18 connected by shafts and bearings 19 attached to each thrust plate 13 synchronizes the deployment operations of each thrust plate 13. Note that the deployment limit stopper 16 is attached to the top plate 11 with high rigidity because the front buoyancy plate 1 or the rear buoyancy plate 2 receives a large water resistance during a backward movement, and the tipping limit stopper 17 is attached to the side frame 12 because it does not receive a large water resistance.
[0021] FIG. 5 is a B-B cross-sectional view of the thrust plate unit 10 according to the present invention, showing a state where the attitudes of multiple thrust plates 13 are toppled under the water resistance from the forward direction.
[0022] FIG. 6 is a B-B cross-sectional view of the thrust plate unit 10 according to the present invention, showing a state where the thrust plate 13 is not receiving water resistance from the forward direction, or a state where the thrust plate 13 is receiving water resistance from the rear due to the backward movement of the buoyancy plate. The thrust plate 13 is deployed vertically downward under its own weight or the water resistance from the rear. Note that when the front buoyancy plate 1 or the rear buoyancy plate 2 performs a backward movement, the large water resistance received by the thrust plate 13 is received by the top plate 11 via the deployment limit stopper 16.
[0023] Figure 7 is an exploded view of the water gliding motion according to the present invention. The rider's posture is synthesized based on the A-A cross-sectional view in Figure 1, and the arrows in the figure indicate the direction of movement of the rider's arms, torso, and legs.
[0024] As shown in Figure 7-A, a rider who is on the upper surface of the floating high-speed water slide toy can assume a comfortable posture by gripping the front buoyancy plate 1 with both arms, resting both elbows on the front buoyancy plate 1, placing both soles of both feet on the footboards 6 of the rear buoyancy plate 2, and resting both knees on the rear buoyancy plate 2, thereby resting their entire weight on the front buoyancy plate 1 and the rear buoyancy plate 2.
[0025] Next, as shown in Figure 7-I, the rider raises their hips high and leans forward, preparing for high-speed gliding on water.
[0026] Then, as shown in Figure 7-U, when the rider strongly pushes the footboard 6 on the rear buoyancy plate 2 backward and simultaneously pushes the grip 4 on the front buoyancy plate 1 forward, the rear buoyancy plate 2 moves backward, causing the thrust plate 13 to unfold. The reaction force of the drag from the water is transmitted to the front buoyancy plate 1 via the grip 4 and the rider, and the front buoyancy plate 1 glides forward using the reaction force received through the grip 4 as propulsion. Furthermore, as the front buoyancy plate 1 moves forward, the thrust plate 13 of the front buoyancy plate 1 tips backward due to the drag from the water in the forward direction, so the wave resistance caused by the forward movement of the front buoyancy plate 1 is minimal.
[0027] Here, assuming the density of seawater is ρ = 1030 kg / m³, and the effective dimensions of one of the propulsion plates 13 on the forward buoyancy plate 1 and the rear buoyancy plate 2 that obtain drag from the water are 10 cm long and 40 cm wide, the drag coefficient Cd = 1.19. If the forward buoyancy plate 1 and the rear buoyancy plate 2 are each equipped with a set of four propulsion plates 13, then the area S that obtains drag from the water on the forward buoyancy plate 1 or the rear buoyancy plate 2 is 0.16 m². If the speed at which the passenger kicks the rear buoyancy plate 2 backward is V = 2 m / sec, then the drag force D(N) received from the water by the passenger's action of kicking the rear buoyancy plate 2 backward is D(N) = 1 / 2 × ρ × Cd × S × V 2= 0.5 × 1030 × 1.19 × 0.16 × (2) 2 This results in a large value of approximately 392.2N, and it can be seen that by the rider kicking the rear buoyancy plate 2 backward and simultaneously pushing the front buoyancy plate 1, which has less wave resistance, forward, the amusement ride of the present invention can glide at high speed on the water using the reaction force of the aforementioned drag and the force with which the rider pushes the front buoyancy plate 1 forward as propulsion.
[0028] Figure 7-E shows the water-sliding state of the amusement ride of the present invention. As the front buoyancy plate 1 moves forward, the rear buoyancy plate 2, which is connected to the grip 4 of the front buoyancy body 1 via the instep band 7 and the rider, also moves forward following the front buoyancy body 1. Furthermore, as the rear buoyancy plate 2 moves forward, the thrust plate 13 of the rear buoyancy plate 2 tips backward due to the water resistance received from the forward direction, so the wave resistance caused by the rear buoyancy plate 2 moving forward is minimal.
[0029] Figure 7-O shows the state after the high-speed water gliding of the amusement ride of the present invention has finished. Since there is no water resistance from the forward direction, both the self-deploying thrust plate 13 of the front buoyancy plate 1 and the thrust plate 13 of the rear buoyancy plate 2 are deployed vertically by their own weight.
[0030] Next, as shown in Figure 7-C, the rider strongly pulls the grip 4 on the front buoyancy plate 1 backward, and at the same time, while the rider assumes a forward-leaning posture with their hips raised, they strongly pull the acromion band 7 on the rear buoyancy plate 2 forward. As a result, the thrust plate 13 of the front buoyancy plate 1 deploys, and the reaction force of the drag force received from the water is transmitted to the acromion band 7 of the rear buoyancy plate 2 via the grip 4 and the rider. The rear buoyancy plate 2 is then pulled back in the forward direction along the connecting rail 3 using the reaction force received via the acromion band 7 as propulsion, and the front buoyancy plate 1 and the rear buoyancy plate 2 return to a ready position for high-speed gliding on the water. Furthermore, since the thrust plate 13 of the rear buoyancy plate 2 tips backward due to the water resistance received from the forward direction, the wave resistance caused by the rear buoyancy plate 2 being pulled forward is minimal.
[0031] By repeating the series of operations from Figure 7-A to Figure 7-F, the high-speed water gliding toy of the present invention can continuously glide at high speed on the water.
[0032] Furthermore, if the state shown in Figure 7-O is omitted and thrust is continuously obtained to increase the gliding speed, even if the area of the thrust plates 13 that receive water drag is the same, by lowering the vertical height of the thrust plates 13 and increasing the number of plates, the distance and time from when the thrust plates 13 are tilted backward to when they unfold vertically and gain the effect of the water can be shortened, thereby increasing the gliding speed smoothly.
[0033] Furthermore, the front buoyancy plate 1 has independent brake levers 5 on the left and right of the grip 4. When the rider pulls the brake lever 5, the brake plate 8, connected by a wire or linkage mechanism 9, extends independently from the side of the front buoyancy body 1 toward the front. This generates water resistance on both sides of the front buoyancy plate 1 during gliding on the water, allowing the rider to freely perform left and right turns and deceleration as intended.
[0034] Here, since the density of water is about 830 times that of air, and the drag force of water is said to be proportional to the square or cube of the speed of movement of an object, it can be seen that the most effective way for a person to move at high speed in or on water with little fatigue is for the rider to entrust their entire body to a playground equipment that generates little wave resistance, thereby eliminating the wave resistance created by the rider themselves.
[0035] Furthermore, it is self-evident that comprehensively utilizing the large muscles of the human body to obtain the necessary propulsion is a way for even elderly people and women with less physical strength to enjoy long-duration high-speed gliding on water with less fatigue. The names of the human muscles, their average size, and the actions they perform are as follows, in order from the largest muscles. 1. Quadriceps femoris (1913cc): Leg extension movement 2. Gluteus maximus (864cc): Used for kicking or stepping the leg backward. 3. Deltoid muscle (792cc): Movement of the arm and shoulder 4. Hamstrings (776cc): Used for hip extension and knee flexion. 5. Pectoralis major (676cc): Used in movements such as extending the arms forward or raising the body from a prone position. 6. Triceps brachii (620cc): Used for pushing objects and raising the body from a prone position. 7. Soleus muscle (575cc): Plays a role in stabilizing the lower body when standing or running. 8. Latissimus dorsi (550cc): The movement of pulling the body in from a position where the arms are extended upward or forward. 9. Trapezius muscle (458cc): Used for raising the arms and shrugging the shoulders. 10. Biceps brachii (366cc): For movements such as bending the elbow.
[0036] From the results of the previous section, it can be seen that the movement of kicking the leg backward while extending the hip joint, using the quadriceps femoris (the largest muscle), the gluteus maximus (the second largest muscle), and the hamstrings (the fourth largest muscle), is the movement that generates the greatest force with the least fatigue.
[0037] Furthermore, it can be seen that the movement of pushing the arm forward using the deltoid muscle (the third largest muscle), the pectoralis major (the fifth largest muscle), the triceps brachii (the sixth largest muscle), and the trapezius muscle (the ninth largest muscle) is also a movement that can generate great force with little fatigue.
[0038] Furthermore, it can be seen that the movement of pulling an extended arm towards the body while bending the elbow, using the latissimus dorsi (the 8th largest muscle) and the biceps brachii (the 10th largest muscle), is a movement that generates a great deal of force with minimal fatigue.
[0039] Therefore, it can be seen that the actions of extending the hip joint and kicking the leg backward to deploy the propulsion plate 13 on the underside of the rear buoyancy plate 2 to obtain water resistance, and using that reaction force to push the arm forward to obtain propulsion to move the front buoyancy plate 1 forward, and moving the front buoyancy plate 1 backward by bending the elbow and pulling it towards the body to deploy the propulsion plate 13 on the underside of the front buoyancy plate 1 to obtain propulsion, are actions that can obtain a large amount of propulsion with little fatigue.
[0040] Furthermore, it is understood that the most rational posture for obtaining the propulsion needed to move across the water surface through the actions described in the previous section is for the passenger to lie prone on the upper surface of a buoyancy device that can support their own weight.
[0041] Furthermore, since the forward field of vision is narrow in the prone position, it is recommended to equip the boat with a manual braking system to perform turning or braking maneuvers to avoid collisions with obstacles or other vehicles while gliding at high speed on the water.
[0042] Furthermore, by incorporating a mechanism that allows the front buoyancy plate 1 and the rear buoyancy plate 2 to be easily fixed in the position with the smallest gap between them, the front buoyancy plate 1 and the rear buoyancy plate 2 can be fixed in the position with the smallest gap at the crest of an approaching wave, allowing the rider to stand up and enjoy a similar activity to surfing. [Industrial applicability]
[0043] By providing recreational equipment that allows elderly people and women with less physical strength to slide across the water surface at high speed with less fatigue, we can contribute to improving the health of the public. [Explanation of symbols]
[0044] 1. Front buoyancy plate 2 rear buoyancy plates 3-section rail 4 Grips 5 Brake levers 6 treads 7th Band 8 brake plates 9. Wire or link mechanism 10 thrust plate units 11 top plates 12 side frames 13 thrust plate 14 rotation axes 15 Rotating shaft bearings 16-Limit Stopper 17. Tipping limit stopper 18 Open / Close Operation Synchronization Board 19 shafts and bearings 20 fixing pin insertion holes
Claims
1. A water-based high-speed sliding toy characterized by a structure that allows for changing the gap between the front and rear buoyancy plates, with the front buoyancy plate and the rear buoyancy plate having a fixed connection to the connecting rail, and the non-fixed buoyancy plate having a mechanism that allows it to move back and forth along the connecting rail, with either one of the front or rear buoyancy plates being fixedly connected to the connecting rail, and the buoyancy plate on the non-fixed side being able to move back and forth along the connecting rail.
2. The thrust plate unit equipped with the buoyancy plate has multiple thrust plates with a low vertical height, thereby shortening the backward movement distance from the start of the buoyancy plate's backward movement until the thrust plates are fully deployed vertically downward and receive sufficient water resistance, even when the thrust plates of the buoyancy plate are in a tilted state due to water pressure from the front. This shortens the time it takes for the thrust plates to obtain the water resistance necessary for gliding on the water through the backward movement of the buoyancy plate, thereby achieving a smooth and continuous high-speed gliding state on the water, as described in the water high-speed gliding toy 1.
3. The water-based high-speed gliding toy (1) is characterized by having independent brake levers on the left and right of the grip of the front buoyancy plate, and when the brake levers are pulled, brake plates connected by wires or linkage mechanisms, etc., independently extend forward from the sides of the front buoyancy plate, and the drag force received from the water makes it easy to perform turning movements to the left and right and deceleration movements when gliding on the water.
4. The water-based high-speed gliding toy (1) is characterized by having a mechanism that allows the front and rear buoyancy plates to be easily fixed in a position with the smallest gap between them, so that when a wave catches up, the front and rear buoyancy plates can be fixed in a position with the smallest gap between them, allowing the rider to stand up and enjoy a game similar to surfing.
Citation Information
Patent Citations
JP1960000093B1