Towed personal watercraft

a technology for personal watercraft and watercraft, which is applied in the field of towed personal watercraft equipment, can solve the problems of high computer controlled towed personal watercraft are obviously not practical options for towed personal watercraft, and watercraft require tremendous skill and balance, so as to reduce drag force and surface roughness, the effect of reducing the pitch instabilities found in the present ar

Inactive Publication Date: 2008-12-11
ROSIELLO KEITH M
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]The present invention fulfills needs present in the art by providing a towed personal watercraft apparatus where drag forces are reduced, surface roughness issues are mitigated, and pitch instabilities found in the present art are practically eliminated. To accomplish each of ...

Problems solved by technology

Standard rigid towed personal watercraft, designed for standing or kneeling, such as waters skis, water toboggans, ski boards, and wake boards, ride on the surface of the water, and as a result, are subjected to high drag forces and surface roughness.
Computer controlled towed ...

Method used

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  • Towed personal watercraft
  • Towed personal watercraft
  • Towed personal watercraft

Examples

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Embodiment Construction

[0031]It should be appreciated that the particular implementations shown and described herein are examples of the present invention and are not intended to otherwise limit the scope of the present invention in any way. Further, the techniques are suitable for applications in marine systems, hydraulics systems, aeronautic and aerospace systems, wind tunnel systems, or any other application.

[0032]The present invention is an improved, towed personal watercraft apparatus. A canard assembly comprising a forward pair of rotatable hydrofoils pivotally attached to a vertical stabilizer, the vertical stabilizer itself rigidly affixed to the platform of the towed personal watercraft, is configured to provide a restoring lift force or torque to counteract pitch transients of the platform resulting from operator weight shifts or water turbulence. In a representative embodiment, a rotation axis of a torsion spring pivotally attached to the rotatable hydrofoils is positioned at or near the center...

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Abstract

A towed personal watercraft apparatus includes a submergible unit and a platform. The submergible unit comprises at least two independent vertical stabilizers and one or more hydrofoil units mounted to at least one of the vertical stabilizers. One or more of the hydrofoil units is pivotally attached to the vertical stabilizers. Pivotal attachment can include a torsion spring or roller bearing to allow the hydrofoil units to pivot or rotate about the pitch axis of the platform, thereby improving stability of the towed personal watercraft. Rotation of the hydrofoil units can be limited for functional concerns and performance. For example, rotation of the hydrofoils about the pivot can be allowed in a first direction to prevent a nose dive, while being restricted in a second direction to facilitate a launch of the watercraft out of the water. The platform includes a user mount, such as foot holds or equivalents.

Description

CROSS-REFERENCE TO RELATED PATENT APPLICATIONS[0001]The following non-provisional application follows provisional application 60 / 894,782, filed Mar. 14, 2007, Attorney Docket No. 350932-0106, which is incorporated herein by reference in its entirety.FIELD OF THE INVENTION[0002]The present invention relates to a marine apparatus. Specifically, the present invention relates to a towed personal watercraft apparatus.BACKGROUND OF THE INVENTION[0003]Standard rigid towed personal watercraft, designed for standing or kneeling, such as waters skis, water toboggans, ski boards, and wake boards, ride on the surface of the water, and as a result, are subjected to high drag forces and surface roughness. Towed personal watercraft drag forces can be reduced and surface roughness issues mitigated by reducing or eliminating contact with the water's surface. To this end, a variety of towed personal watercraft have been fitted with lift elements, commonly called hydrofoils, to allow the body of the t...

Claims

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Application Information

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IPC IPC(8): B63B35/73
CPCB63B1/24B63B35/81B63B34/40
Inventor ROSIELLO, KEITH M.
Owner ROSIELLO KEITH M
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