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| Number | Title | Issue Date |
| 7128010 | CBTF sailing yacht appendage retraction system A canting ballast twin foil (CBTF) sailing yacht constructed according to the invention includes a sailing hull, a laterally moveable ballast suspended beneath the hull that provides a counter heeling force when the yacht is underway, and fore and aft foils that pro... | 10/31/2006 |
| 7108572 | Sailboard with multiple skegs A sailboard has a pair of skegs extending downwardly from a bottom surface thereof generally adjacent a rear of the sailboard. The pair of fins extend in a vertical orientation parallel to a centerline of the sailboard. A retractable fin is mounted adjacent the rear... | 09/19/2006 |
| 6349659 | Sailboat rotatable keel appendage A Rotatable Keel Appendage comprising a conical hollow support fixed to a sailboat hull into which is juxtapositioned a rotatable cone member which supports a fin keel carrying a heavy ballast bulb. The rotatable cone member has a threaded shaft at its pe... | 02/26/2002 |
| 5967074 | Keel for sail ships A sailing yacht, in addition to its ballast keel (2), has at least one winged keel ( ) which optionally also carries ballast. Both ballast keel (2) and winged keel (1) are mounted to swivel on the hull of the sail ship around an axis aligned essentially i... | 10/19/1999 |
| 5784976 | Weighted daggerboard stabilizer for wind surfing apparatus A wind surfing apparatus formed with a hull supporting a mast and sail includes a removable daggerboard having a weighted mass in a lower end portion thereof to lessen the tendency of the hull to be unstable or flip during use. The weighted mass may eithe... | 07/28/1998 |
| 5503097 | High performance centerboard system A movable centerboard for water craft capable of multiple settings having an upper position within the hull, a lower position at full depth below the hull and multiple settings therebetween such that the system is adapted to receive and operate the center... | 04/02/1996 |
| 5183367 | Dagger board storage housing for sailboards A dagger board bearing for sailboards, developed with the objective of improving sailing properties, exhibits a dagger board casing (4) inserted in a sailboard (1) wherein a dagger board (5) introducible from above is pivotably supported with a first hand... | 02/02/1993 |
| 5150661 | Retractable steering device for cargo barges that increases maneuverability by providing a pivot point or points when altering course A retractable steering device for liquid/bulk cargo carrying barges includes a rectangular barge hull having a generally flat bottom and an upper deck and generally vertical port and starboard sidewalls. A cargo hold is contained at the central portion of... | 09/29/1992 |
| 5129344 | Actuating mechanism An actuating mechanism is provided for controlling external devices by means of coaxial actuating cables or other suitable linkages. The actuator includes an internal slide element movable to selected detent positions by means of a lever arm which pushes ... | 07/14/1992 |
| 5036785 | Lightning protection installation on a boat A lightning protection installation for boats comprising a copper lightning rod mounted on the top of the mast or, in the case of a power boat, mounted on the deck, a copper wire attached to the rod and running downwardly to a point where it is attached t... | 08/06/1991 |
| 4964826 | Sailboard fin retaining member An attachment of a fin to an adjustable fin holder of a surfboard or sailboard that protects the fin, fin holder and board structure around the fin holder from damage if the fin strikes an underwater object. The attachment includes a flexible slide member... | 10/23/1990 |
| 4928613 | Retractable steering device for cargo barges that increases maneuverability by providing a pivot point or points when altering course A retractable steering device for liquid/bulk cargo carrying barges includes a rectangular barge hull having a generally flat bottom and an upper deck and generally vertical port and starboard sidewalls. A cargo hold is contained at the central portion of... | 05/29/1990 |
| 4892493 | Supplemental sailboat propulsion device A supplemental propulsion device for a sailboat or sailboard type water craft including a pivotal centerboard. A pair of propulsion wings that are vertically hinged to one-another and mounted to the lower portion of the leading edge of the centerboard of ... | 01/09/1990 |
| 4883436 | Kneeboard with retractable fins A kneeboard is provided with a pair of retractable fins which are operated by a control knob mounted on the board in front of the user's knees. The control knob is connected to the fins by a pair of cables. The fins can be raised or lowered simultaneously... | 11/28/1989 |
| 4846745 | Sailboard fin retaining member A method of attaching a fin to an adjustable fin holder of a surfboard or sailboard that protects the fin, fin holder and board structure around the fin holder from damage if the fin strikes an under water object.... | 07/11/1989 |
| 4805546 | Retractable water board fin A generally trapezoidal fin (22) is pivotally fastened to a casing which can receive the entire fin, permitting total retraction of the fin. The casing is formed with at least one notch (42) for selectively positioning the fin relative to the casing. In a... | 02/21/1989 |
| 4701144 | Breakaway surfboard fin holder A breakaway surfboard fin holder is provided which is used in conjunction with a surfboard having a fin supporting channel mounted in the lower, rear surface of the surfboard. A fin is provided having an anchoring tongue extending rearwardly along the top... | 10/20/1987 |
| 4667615 | Sailboard centerboard A sailboard including a centerboard contained in a housing and which may be pivoted by the foot of the user from the upper face of the sail-board. In order to provide a simple and inexpensive actuation device for the center-board and which practically pre... | 05/26/1987 |
| 4563971 | Retractable boat keel A boat hull keel is disclosed which retracts into the boat hull on a fixed pivot. The pivot location is placed above the keel/hull bottom intersection, rearward of the major axis of the fully lowered keel and rearward of the keel trailing edge at the keel... | 01/14/1986 |
| 4398485 | Device for detachably securing a centerboard to a sailboard or the like The device comprises a casing adapted to be secured, as by gluing, to the sailboard, the casing having a downwardly opening, mortise-defining recess surrounded at its lowermost end by a peripheral flange, the centerboard having a tenon at its upper end ad... | 08/16/1983 |
| 4387657 | Centerboard snubber A centerboard snubber is disclosed for use in a sailboat equipped with a weighted centerboard or a swing keel in order to prevent the weighted centerboard or swing keel from retracting into its trunk under the force of gravity, the force of passing water,... | 06/14/1983 |
| 4385579 | Sailing craft A sailing craft of the type which includes a floating hull, a mast secured to the hull, a sail mounted on the mast and rudder means, wherein the mast is pivotally mounted with an articulation near but spaced from the base thereof with respect to a substan... | 05/31/1983 |
| 4378748 | Sailboat keel apparatus A sailboat carries a pair of opposed keel sections which are angularly positionable about a common hinge axis, either as a keel unit or individually, by means of compressed air biased hydraulic actuators connected via shock absorbers to the keel sections.... | 04/05/1983 |
| 4377124 | Sailboat with an inclinable keel board The invention relates to a sailboat with a keel board that is inclinable sideways. A single keel board is resiliently inclinable due to the effect of the water which rotates it about an axis disposed substantially in the vertical plane of longitudinal sym... | 03/22/1983 |
| 4280433 | Underwater appendages for vessels A keel assembly or similar fin-like underwater appendage for a boat is provided which is adjustable to adapt its characteristics to the operating conditions of the boat, for example to optimize hull performance of a sailing boat on opposite tacks. The ass... | 07/28/1981 |
| 3951090 | Hydraulic system for raising and lowering keel The hydraulic system for raising and lowering a heavy keel comprises a cylinder, a piston movable in the cylinder and connected to the keel, and an accumulator for supplying hydraulic fluid at a positive pressure below that necessary to raise the keel aga... | 04/20/1976 |
