Patent ID: 8051793

Claim:
A marine vehicle comprising; (a) a hull; (b) at least one pair of retractable hydrofoils provided under the hull of the marine vehicle; (c) a guide bar for each pair of retractable hydrofoils, the guide bar extending vertically from the hull downwardly; (d) a sliding mechanism to which each respective pair of retractable hydrofoils is connected by joints for rotating hydrofoils with respect to the sliding mechanisms, the sliding mechanisms being guided by the guide bar; (e) connecting bars having an upper and a lower end, each connecting bar being pivotably connected at said lower end to a lower sliding element and at said upper end to an upper sliding element, said lower sliding element being linearly movable in a hydrofoil channel formed on the upper surface of each hydrofoil, and the upper sliding element being displaceable in a channel formed within a housing in said hull, the outer surface of which having the same surface form with the lower hull surface of the marine vehicle when the hydrofoils being retracted; and (f) pistons each mounted in said channel of the housing, and each piston driving other sliding elements to move the same.