Retractable hydrofoil system for water craft

Claim 1

A RETRACTABLE HYDROFOIL SYSTEM, COMPRISING, IN COMBINATION, AN ELONGATE HULL HAVING A LONGITUDINAL AXIS, LATERAL WALL MEANS, AND A BOTTOM WALL; LINK MEANS MOUNTED ON SAID HULL FOR TURNING MOVEMENT ABOUT PIVOT AXES IN THE REGION OF THE LOWER PART OF SAID LATERAL WALL MEANS AND THE OUTER PART OF SAID BOTTOM WALL AND IN PLANE TRANSVERSE TO THE LONGITUDINAL AXIS OF SAID HULL BETWEEN A LOWER POSITION PROJECTING FROM SAID HULL ND A HIGHER POSITION EXTENDING FROM SAID PIVOT AXIS UPWARDLY ALONG SAID LATERAL WALL MEANS OF SAID HULL; AND FOIL MEANS INCLUDING TWO SPACED JOINT MEANS ARTICULATED TO SAID LINK MEANS AND MOVING WITH THE SAME, SAID LINK MEANS AND FIOL MEANS BEING ARRANGED AND CONSTRUCTED IN SUCH A MANNER THAT SAID FOIL MEANS IS LOCATED LOWER THAN SAID HULL WHEN SAID LINK MEANS IS IN SAID LOWER POSITION, AND IS LOCATED IN A HIGHER POSITION CLOSELY ADJACENT SAID LINK MEANS AND FLATLY FOLDED AGAINST SAID LATERAL WALL MEANS AND ABOVE SAID BOTTOM WALL OF SAID HULL WHEN SAID LINK MEANS IS IN SAID HIGHER POSITION.