Control device for stabilization of hydrofoils attached to water-craft

Claim 1

CONTROL DEVICE FOR HYDROFOILS ATTACHED TO WATER CRAFT AND BEING PROVIDED ON THE FOIL''S UPPER SURFACE IN THE REGION, AT WHICH SUBPRESSURE IS GENERATED DURING TRAVEL, WITH PLURAL ROWS OF AIR APERTURES, ONE BEHIND THE OTHER AND EXTENDING AT LEAST PARTLY OVER THE FOIL SPAN, A PLURALITY OF CHAMBERS INSIDE OF THE FOIL CONNECTED WITH SAID APERTURES TO WHICH AIR IS ADMITTED, FOR THE PURPOSE OF INFLUENCING LIFT, VALVE MEANS FOR REGULATING SUCH AIR ARRANGED ABOVE THE FLOTATION WATER-LINE, SAID VALVE MEANS BEING PROVIDED WITH A SERIES OF OUTLETS, EACH OF WHICH IS CONNECTED SEPARATELY BY A DUCT TO A ROW OF SAID AIR EXIT APERTURES ON THE FOIL, SAID VALVE MEANS BEING PROVIDED FOR EACH OUTLET WITH A COORDINATED INLET OPENING AND A COORDINATED VALVE SLIDE, MEANS INTERCONNECTING ALL OF THE VALVE SLIDES IN A PREDETERMINED POSITION WITH RESPECT TO THEIR OUTLETS AND ADAPTED TO OPERATED THE VALVE SLIDES JOINTLY RESPONSIVE TO CONTROL DEVICES WHICH RESPOND TO THE POSITION AND TO THE MOTIONS OF THE CRAFT IN A SEAWAY, FURTHER MEANS FOR REGULATING THE AIR QUANTITY TO A FRONT FOIL OF THE CRAFT INCLUDING A DEPTH SENSOR HAVING AIR INTAKE CHANNELS, SAID VALVE INLET OPENINGS RECEIVING AIR FROM SAID INTAKE CHANNELS, SAID CHANNELS BEING ARRANGED ONE BEHIND THE OTHER, IN A REGION OF SUBPRESSURE ON THE DEPTH SENSOR AND BEING PROVIDED WITH GROUPS OF AIR INTAKE ORIFICES ARRANGED ONE ABOVE THE OTHER, PARTLY ABOVE AND PARTLY BELOW THE FOILBORNE WATER LINE, WHEREBY THE LIFT OF THE FRONT FOIL IS CONTROLLED JOINTLY BY THE DEPTH SENSOR AND THE CONTROL DEVICES.