Class 114/141 - Vertical adjustment

Subclass of Class 114 - Ships
Definition: Keel structures which are adapted to be moved vertically
No. of patents: 25
Last issue date: 04/17/2012

Number	Title	Issue Date
8156880	Impact absorbing drop keel The present invention relates to a keel construction for a floating vessel, where a drop keel (3) can be adjusted from a retracted/extended position to an extended/retracted position for the purpose of varying the steering and gravity point of the floating ve...	04/17/2012
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
6951180	CBTF sailing yacht main engine drive system A canting ballast twin foil (CBTF) sailing yacht constructed according to the invention includes a sailing hull, a ballast, a ballast-supporting structure, and an onboard ballast drive system. The ballast drive system moves the ballast in order to vary the counter-h...	10/04/2005
6382121	Boat ballast system A ballast system for a sailing boat includes an elongate body having a first end and a second end. A mounting is provided at the first end of the elongate body for suspending the elongate body from a hull of a sailing boat. A ballast weight is positioned ...	05/07/2002
6325009	Sailboat for sailing in shallow water A sailboat having a novel hull shape, a fixed, shallow keel, dual rudders, and retractable, shallow dagger boards for sailing in shallow or shoal water is provided. The combination of features allows the boat to achieve performance sailing at all points o...	12/04/2001
6176191	Bilge keel and method for FPSO petroleum production systems This is a mechanical element intended to control the rolling of FPSO type petroleum production systems which use adapted decommissioned ships as the floating facility. The bilge keel is made up of two lines of plates, continuous or sectioned, in this case...	01/23/2001
6032603	Method and apparatus to increase the velocity of sailing vessels An asymmetric wing for decreasing the leeward drift of a vessel has two different surfaces, one of which is cambered in cross-section and the other which has less camber in cross-section or flat. The asymmetric wing has a leading edge pointed toward the b...	03/07/2000
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
5617805	Trimaran An improved trimaran is provided that includes a car-like steering configuration and interchangeable floats or pontoon supports to vary the width of the trimaran, depending on whether the user wishes to sail the trimaran or transport it to another locatio...	04/08/1997
5503581	Apparatus for adjustable fin and fin block A water ski adjustable fin block and fin are disclosed. The fin block employs a slidable wedge for clamping the fin in place within the fin block during use and allowing the fin to be unclamped just enough to allow adjustment of the fin. A screw arrangeme...	04/02/1996
5431121	Sailboat keel hoist assembly A keel hoist assembly for use in raising and lowering the keel of a retractable keel sailboat and including a winch unit and a generally tubular retractable support tube. The winch unit is removably mountable to a top end of the retractable support member...	07/11/1995
5280760	Sailing craft A sailboat apparatus includes a hull having a bottom, bow and stern portions along with a central portion and at least one mast for supporting a sail extending above the hull. The mast is mounted to the hull for side-to-side movement relative to the hull....	01/25/1994
5235926	Anti-skid device for flat-bottomed boats A pair of pivotally attached fins depend into the water below the hull of the boat. When turning maneuvers are executed the tendency of the boat to skid sideward is resisted by the downwardly engaged fin panels. The device provides improved steering contr...	08/17/1993
5036783	Sailing yacht with a centerboard In a sailing yacht with a centerboard having a hull accommodating a centerboard well containing the centerboard capable of movement therein through rollers along curvilinear guides provided in the centerboard well, according to the invention, the rollers ...	08/06/1991
4759308	Sealing lip assembly for surfboards and sailboats A sealing lip assembly for surfboards or sailboats, which closes the underwater side of the opening of the centerboard case or fin case in a virtually flow-tight and non-vortical manner in every position of the centerboard, and including two sealing lips,...	07/26/1988
4721051	Tandem winch reels A tandem-reel realignment winch system having two rotatable reels and a line wound around each of the reels. The line is wound in a first direction around the first reel and in a reverse direction around the second reel to compensate for the deviation in ...	01/26/1988
4703708	Steerable keel A steerable keel (10) comprising, in a first embodiment, a stationary section (12) and a rotatable section (14) and in a second embodiment, a stationary section (30) and two rotatable sections (32) (34). In either embodiment, the steerable keel (10) is de...	11/03/1987
4690089	Boat with a raisable and lowerable keel A boat with a raisable and lowerable keel is proposed, which can be constructed as a swivel, lifting or ballast drop keel. The keels are fixed to tensioning members either directly or via cables. The tensioning members can be spiral springs, which run in ...	09/01/1987
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
4439166	Adjustable water ski fin and wing A water ski fin is carried by a housing mounted to the upper surface of the rear end of a ski with the fin extending downwardly through an elongated slot in the ski. The fin carries a transversely extending wing thereon and the combination is capable of b...	03/27/1984
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
4376416	Convertible sailboat/motorboat A convertible sailboat/motorboat is disclosed which has capability for displacement movement under maximum speeds typical of the maximum for displacement boats as a function of their size, capability for semi-planing of the hull under sail propulsion, and...	03/15/1983
4316425	Lifting keel for sporting sail boats A lifting keel assembly for sailboats having a shaft obliquely inclined in forward and upward directions slidably receiving the lifting keel, the upper area of the lifting keel being provided with sliding shoes on the forward and rearward longitudinal edg...	02/23/1982
4297757	Marine rescue capsule A marine capsule for sea rescue and transportation having a generally spherical configuration and on its sides hermetically closed hatches of tempered glass and a sun-reflecting signal-sending film. At its top are four larger diameter hatches, two of whic...	11/03/1981
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

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Class 114/141 - Vertical adjustment