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US 4,061,104 AGranted
Hydrofoil vessel
OwnerGifford Pinchot, IIIinventor
Life of this patent
Estimating the term…
Abstract
A hydrofoil vessel in which the hydrofoils comprise pairs of rotary members which are inclined in a downwardly inboard direction from opposite sides of the hull or body portion of the vessel. The rotary members have foil-shaped peripheral portions extending into the water at an acute angle with respect to the water surface and are movable both axially and angularly to achieve optimum lift consistent with the vessel's speed.
Claims6
A hydrofoil vessel comprising, in combination:
- a body portion;
- at least one pair of circular members supported on opposite sides of the body portion, each of the circular members having a thin foil shaped annular peripheral portion, said circular members being positioned at an angle with respect to the water surface with a geometric segment of said circular peripheral foil portion thereof extending into the water to support the vessel when operated at its higher speeds by virtue of the forward movement of the vessel;
- said segment of the annular peripheral foil portion extending into the water defining a chord which, when said vessel is viewed in plan, defines an angle with the longitudinal axis of the body portion;
- and
- mounting means for rotatably connecting the circular members of the body portion including means for varying the said angle between the longitudinal axis of the body portion and the chord of the immersed segment of said annular peripheral foil portion of the circular members.
2 more elements
A hydrofoil vessel comprising, in combination:
- a body portion;
- at least one pair of circular members supported on opposite sides of the body portion, each of the circular members having a thin foil shaped annular peripheral portion, the circular members being inclined in a downwardly inboard direction with respect to the body portion and their axes being inclined in a downwardly outboard direction, said circular members being positioned at an angle with respect to the water surface with a geometric segment of said circular peripheral foil portion thereof extending into the water to support the vessel when operated at its higher speeds by virtue of the forward movement of the vessel;
- said segment of the annular peripheral foil portion extending into the water defining a chord which, when said vessel is viewed in plan, defines an angle with the longitudinal axis of the body portion;
- and
- mounting means for rotatably connecting the circular members to the body portion including means for varying the said angle between the longitudinal axis of the body portion and the chord of the immersed segment of said annular peripheral foil portion of the circular members.
2 more elements
Dependencies are inferred from the claim text.