TODAY’S PATENT – WINDSURFER
The Windsurfer was invented by Fritz Schagen on December 14, 1976 bearing patent number US3996868A.
Surfboards equipped with a mast and sail for propulsion are known from the prior art in this field. They normally have a hull molded of fiber glass or of some other suitable plastic material. Such a plastic hull may be composed of several hull sections which are permanently joined together, to form an integral one-piece hull construction. The hull for this type of surfboard is normally more than three meters long, which means that such a hull, though light in weight, creates transportation problems, especially in public conveyances, such as buses, trains, airplanes, etc.
The present invention suggests that the hull of the surfboard or aquaplane be provided with at least one transverse separation joint and that the separable hull sections can be joined in a torsion resistant connection, whereby, according to a further feature of the invention, this connection is obtained through a longitudinal clamping force holding the hull sections against each other.
A wind-propelled surfboard or aquaplane having a hull assembled of several separable hull sections which are longitudinally clamped together by means of tensioning cables extending inside two horizontally spaced longitudinal spine tubes. These tubes are joined by means of connecting sleeves, for a torsion-resistant connection between the hull sections.