A sail assembly using slugs and flakers is presented. The sail slug has a plurality of rollers positioned along an inner edge that are received within a groove of a mast. The outer edge of the sail slug has a swivel platform that attaches to straps positioned on a sail. The flaker has a pair of leaves having a first end, a longitudinal section, and a second end with a bracket. The brackets of the leaves have openings that align to receive a torsion spring and an axle to hingedly connect the pair of leaves.

A flyable sailboat includes: a floating member, having a front support, a rear support and one or more air pumps, wherein the top end of the front support is installed with at least one rotating device; one or more rear flaps, installed at the tail end of the floating member and respectively including a horizontal flap and a rotating vertical rudder; two or more lateral flaps, respectively extended from two lateral sides of the floating member; at least one wind resisting device, installed on the rotating device and including at least one sail, at least one boom rod and at least one horizontal rod, wherein the center of the sail is installed with the boom rod having a tail rod and fastened on the rotating device; and one or more power devices, installed at the tail end or at two lateral sides of the floating member.

The invention relates to a system and method of sail propulsion for sailing vessels and tugboats, consisting of one or more rows of sails secured at their upper vertices or corners by means of the ends of masts, and cables or ropes located between the upper ends of the masts, or the ends of the radial arms of said masts, with masts provided in the bow and others in the stern. The sails are secured at their lower vertices or corners to rings fixed to the deck, to ropes or cables, the ends of which are attached to the deck, to small posts, to the lower region of the main masts, to the ends of radial arms fixed in the lower region of the masts, or to pulleys on which the cables are wound using motors. The rows of sails, aligned from bow to stern, include a mast at the end sails. Cables or ropes form the upper ends of the intermediate sails.

The invention relates to a system and method of sail propulsion for sailing vessels and tugboats, consisting of one or more rows of sails secured at their upper vertices or corners by means of the ends of masts, and cables or ropes located between the upper ends of the masts, or the ends of the radial arms of said masts, with masts provided in the bow and others in the stern. The sails are secured at their lower vertices or corners to rings fixed to the deck, to ropes or cables, the ends of which are attached to the deck, to small posts, to the lower region of the main masts, to the ends of radial arms fixed in the lower region of the masts, or to pulleys on which the cables are wound using motors. The rows of sails, aligned from bow to stern, include a mast at the end sails. Cables or ropes form the upper ends of the intermediate sails.

A folding bowsprit permits deployment of sails from a point forward of the bow on sailing vessels. The folding function allows the sprit to rotate around an axis at ninety degrees to the vessels centerline and permits the end of the sprit to move vertically up or down. This unique ability to fold facilitates: compact stowage when not in use and reduces the overall length of the vessel; adjustment of tack position vertically while sailing; and safer and simpler sail handling by accessing the tack point of said sprit within the deck footprint while sailing.

A frame device (200) for a profiled sail device, the frame device (200) having at least one adjustable frame element (202), the at least one adjustable frame element (202) having longitudinal struts which are spaced apart from one another and are assigned to sail surfaces which are spaced apart from one another, and transverse struts which extend between the longitudinal struts, characterized in that the longitudinal struts and the transverse struts delimit quadrangles which each have two diagonals with varying lengths depending on the adjustment, and the diagonals each have a predetermined maximum length, and a profiled sail device having sail surfaces which are spaced apart from one another and against which the flow can impinge and which form profiled surfaces, a sail front edge and an adjustable skeleton device arranged between the sail surfaces. The skeleton device has at least one frame device (200) of this type.

A frame device (200) for a profiled sail device, the frame device (200) having at least one adjustable frame element (202), the at least one adjustable frame element (202) having longitudinal struts which are spaced apart from one another and are assigned to sail surfaces which are spaced apart from one another, and transverse struts which extend between the longitudinal struts, characterized in that the longitudinal struts and the transverse struts delimit quadrangles which each have two diagonals with varying lengths depending on the adjustment, and the diagonals each have a predetermined maximum length, and a profiled sail device having sail surfaces which are spaced apart from one another and against which the flow can impinge and which form profiled surfaces, a sail front edge and an adjustable skeleton device arranged between the sail surfaces. The skeleton device has at least one frame device (200) of this type.

A sail furler for a sail boat and method for furling a sail for reefing or storage and for unfurling a sail for use. Furling and unfurling of the sail may be accomplished from the cockpit of the sailboat. A mandrel is mounted to the mast extending generally parallel to the boom and attached to the aft end of boom by an aft plate. The mandrel is mounted in bearings and provided with a removable crank for rotation. The mandrel is connected to the mast by a universal joint and bearing structure over which is provided an outer cylinder. A cylinder and resilient sleeve may be provided on the mandrel. A reef brake extends from the mandrel into contact with the boom to prevent rotation for reefing the sail. A slide guard may be mounted at the mast end of the mandrel.

The present invention relates broadly to a rigid wing (10) which in its preferred embodiment is a rigid wing sail fitted to a water-borne vessel. The rigid wing sail (10) comprises a pair of elongate rigid panels (12A) and (12B), and a hinge element designated generally as (14) coupled to the panels (12/B) to permit pivotal movement of the panels (12A/B) relative to one another. Each of the pair of panels such as (12A) includes an adjoining edge (16A) and an opposing lateral edge (18A). The hinge element (14) is coupled to the panels (12A/B) at the respective adjoining edges (16A/B) to form either: 1) a closed configuration of the wing (10) with lateral edges (18A/B) of respective panels (12A/B) positioned adjacent one another wherein the rigid wing sail (10) is closed; or 2) an open configuration of the wing (10) with the lateral edges (18A/B) of the respective panels (12A/B) separated from one another wherein the rigid wing sail (10) is set at a variable camber.

The present invention relates broadly to a rigid wing (10) which in its preferred embodiment is a rigid wing sail fitted to a water-borne vessel. The rigid wing sail (10) comprises a pair of elongate rigid panels (12A) and (12B), and a hinge element designated generally as (14) coupled to the panels (12/B) to permit pivotal movement of the panels (12A/B) relative to one another. Each of the pair of panels such as (12A) includes an adjoining edge (16A) and an opposing lateral edge (18A). The hinge element (14) is coupled to the panels (12A/B) at the respective adjoining edges (16A/B) to form either: 1) a closed configuration of the wing (10) with lateral edges (18A/B) of respective panels (12A/B) positioned adjacent one another wherein the rigid wing sail (10) is closed; or 2) an open configuration of the wing (10) with the lateral edges (18A/B) of the respective panels (12A/B) separated from one another wherein the rigid wing sail (10) is set at a variable camber.