Fin-propulser board
The FinBoard addresses the challenge of converting muscular energy into forward motion by using a vertically oscillating fin to propel the board forward, offering a sustainable and engaging riding experience.
Patent Information
- Authority / Receiving Office
- RU · RU
- Patent Type
- Patents
- Current Assignee / Owner
- KHABIBULLIN RADIK GILFANOVICH
- Filing Date
- 2026-01-22
- Publication Date
- 2026-06-30
AI Technical Summary
Existing water sports boards lack a mechanism to efficiently convert the athlete's muscular energy into forward motion without relying on propulsion systems or external power sources.
A water sports board, the FinBoard, utilizes a vertical fin attached to the underside that oscillates vertically, converting the athlete's energetic movements into forward propulsion through elastic forces, mimicking the rocking motion of skateboarding.
The FinBoard effectively translates the athlete's body movements into forward motion, providing a sustainable and engaging riding experience without external power, enhancing user interaction and control.
Smart Images
Figure 00000001_ABST
Abstract
Description
[0001] The invention relates to the field of sports, in particular to water sports.
[0002] There are various types of wave surfing boards (longboards, shortboards) without propulsion. There are also boards for riding on water using sails (windsurfing) and paddles (SUP boards). A board with a horizontal fin, powered by the rider's muscular energy (pump foil board), is also known.
[0003] Various types of motorized boards for recreational riding are also produced.
[0004] In land-based sports, skateboards are used with wheels for riding on hard surfaces. There's a style of skating in which the athlete's rocking motion, transverse to the longitudinal axis of the board, is converted into forward motion.
[0005] The proposed FINBOARD (hereinafter referred to as FinBoard or FinBoard © or "board") is designed for riding on water using the athlete's muscular power, similar to how skateboarders do.
[0006] The FinBoard has the following design (Figure 1, bottom view): A board (float) 1 capable of supporting the weight of the athlete. The board may have foot rests or other fastenings (magnetic, Velcro) for special footwear (not shown in the figures).
[0007] Vertical Fin 2, which is an elastic plate made of composite material, is rigidly attached at the front to the underside of board 1. The tail section of the fin can oscillate in the vertical plane (as shown in the image below), attempting, under the influence of elastic forces, to return to its original position.
[0008] A FinBoard may have more than one fin (e.g. sequentially located).
[0009] The method of using FinBoard is illustrated in Figure 2:
[0010] In the initial position, the plane of the Fin is parallel to the median vertical plane of the Board (image on the left).
[0011] When the athlete pushes the board to the side 1 (conditionally to the right) with his legs, the tail part of the fin bends and a force vector 2 appears on it, acting on the aquatic environment and ultimately pushing the board forward 3 (image on the right).
[0012] Then the elastic fin tends to return to its original state, and the athlete pushes the board in the opposite (conditionally to the left) direction.
[0013] Thus, riding a board involves energetic movements of the body and legs across the board and the forward movement of the FinBoard itself.
[0014] If the fixed part of the fin is not fixed in the center of the board's length, the athlete's movements will have to have a twisting character of the body, closer to the movements of skateboarders.
[0015] The board may have handrails or eyelets for slings on the top surface (not shown in the Figures).