A hydrofoil includes a body, an even number of wings disposed at the opposite sides of the body and an even number of floats disposed at both sides of a bottom of the body. Each float is a hollow and flat structure. At a rear edge of the float portion is provided a float propeller. With the design o
A hydrofoil includes a body, an even number of wings disposed at the opposite sides of the body and an even number of floats disposed at both sides of a bottom of the body. Each float is a hollow and flat structure. At a rear edge of the float portion is provided a float propeller. With the design of the float structure, the counterforce caused by the water waves impacting on the floats can be reduced, so that the float can move more stably to improve safety and comfortableness.
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1. A hydrofoil comprising: a body including a front end and a rear end opposite the front end, the front end being connected to the rear end via a bottom;an even number of hollow and flat floats being disposed in pairs at the bottom of the body, each of the floats including an inner surface and an o
1. A hydrofoil comprising: a body including a front end and a rear end opposite the front end, the front end being connected to the rear end via a bottom;an even number of hollow and flat floats being disposed in pairs at the bottom of the body, each of the floats including an inner surface and an outer surface which are located toward two sides of the body, and a front edge, a lower edge and a rear edge between the inner and outer surfaces, a float propeller being disposed at the rear edge of the each of the floats to provide propulsive force in water; andan even number of wings being disposed in pairs at both sides of the body and each including at least one wing propeller to produce a propulsive force in the air;wherein a maximum distance between the lower edge of each of the floats and the bottom of the body is larger than a maximum distance between the front edge and the rear edge of each of the floats. 2. The hydrofoil as claimed in claim 1, wherein the front edge, the lower edge and the rear edge of each of the floats are arc-shaped in cross section, and both ends of the arc-shaped cross section of the front, lower and rear edges are connected to the inner and outer surfaces of the body, the front and rear edges each have a straight and flat section and an arc-shaped section, the lower edge is arc-shaped, the straight and flat sections and the inner and outer surfaces define a connecting portion which is fixed to the bottom of the body, the two arc-shaped sections, the lower edge and the inner and outer surfaces define a circular float portion, and the float propeller is located at the arc-shaped section of the rear edge. 3. The hydrofoil as claimed in claim 2, wherein the circular float portion of each of the floats has a center, the connecting portion is extended towards the bottom of the body along the center and is inclined towards the rear end of the body, and between the connecting portion and the bottom is defined an angle between 90 and 40 degrees. 4. The hydrofoil as claimed in claim 2, wherein the circular flat float portion of each of the floats has a center, and the connecting portion extends through the center and perpendicularly towards the bottom of the body. 5. The hydrofoil as claimed in claim 2, wherein the float propeller has a shaft, and at the rear edge of the float is provided an assembling seat which is located at a position where a tangent line perpendicular to the bottom of the body touches the arch-shaped section, and the shaft of the float propeller is connected to the assembling seat and parallel to the bottom. 6. The hydrofoil as claimed in claim 1, wherein the front, lower and rear edges of each of the floats are arcs-shaped in cross section, and both ends of the arc-shaped cross section of the front, lower and rear edges are connected to the inner and outer surfaces, the front and rear edges are straight and flat and perpendicular to the bottom of the body, and the lower edge are arc-shaped. 7. The hydrofoil as claimed in claim 1, wherein the front, lower and rear edges of each of the floats are arcs-shaped in cross section, both ends of the arc-shaped cross section of the front, lower and rear edges are connected to the inner and outer surfaces, the front and rear edges are straight and flat and perpendicular to the bottom of the body, the lower edge is inclined and extends downward from the front edge toward the rear edge, and an angle between the lower edge and the bottom of the body ranges from 10 to 30 degrees. 8. The hydrofoil as claimed in claim 1, wherein the front edge of each of the floats has a V-shaped cross section, while the lower and rear edges are arc-shaped in cross section to connect the inner and outer surfaces, the lower edge is inclined and extends downward from the front edge toward the rear edge, and an angle between the lower edge and the bottom of the boat ranges from 10 to 30 degrees. 9. The hydrofoil as claimed in claim 6, wherein the float propeller of each of the floats includes a shaft, at the rear edge of the float is provided an assembling seat which is located adjacent to the lower edge, and the shaft of the float propeller is connected to the assembling seat and parallel to the bottom. 10. The hydrofoil as claimed in claim 1, wherein each of the wings is sheet-shaped and includes a lateral edge located towards the rear end of the body, the at least one wing propeller is disposed at the lateral edge and rotated to adjust an angle of deflection, so as to make the float fly in water with the bottom lifted at a predetermined height from the water. 11. The hydrofoil as claimed in claim 1, wherein each of the wings is wheel-shaped and includes a rim portion and an assembling portion for connecting the rim portion to the body, the at least one wing propeller is disposed in the rim portion and rotated to adjust an angle of deflection, so as to make the float fly in water with the bottom lifted at a predetermined height from the water. 12. The hydrofoil as claimed in claim 1, wherein the number of the floats is four, the four floats are disposed in pairs at the bottom of the body and are located adjacent to the front and rear ends, the number of the wings is four, and the four wings are disposed in pairs at both sides of the body and located adjacent to the front and rear ends.
Rorabaugh Dale (P.O. Box 1864 Rancho Sante Fe CA 92067) Costa Ron (P.O. Box 1864 Rancho Sante Fe CA 92067), Moveable sponsons for hydrofoil watercraft, including both large entended-performance hydrofoil watercraft and leaping p.
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