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| Number | Title | Issue Date |
| 8091498 | Rudder arrangement for ships having higher speeds comprising a cavitation-reducing twisted, in particular balanced rudder The rudder arrangement for ships comprises a twisted and balanced rudder blade having a slender profile and a low profile thickness and comprising a propeller facing the rudder blade. A rudder pipe is located in the upper region of the rudder blade with rudder post ... | 01/10/2012 |
| 7878135 | Swing-up rudder for small boat A kick-up rudder mechanism for small, tiller-steered sailboats. The rudder has a two-position pivot that allows the rudder to kick up and drop back down automatically when it hits and then clears an underwater obstacle; to be raised and lowered manually with fore-an... | 02/01/2011 |
| 7806068 | Rudder for marine vehicles A rudder (1) adaptable to a rudder shaft (4) in a rudder mechanism for changing the direction of motion of a marine vehicle. The rudder (1) is provided at least one drive unit (2) for the rotation of the rudder (1) around an axis s... | 10/05/2010 |
| 7806067 | Thrust fin for ships Disclosed herein is a thrust fin for ships which recovers lost energy caused by rotational flow generated behind a propeller, and converts it into thrust. The thrust fin of the present invention has a simple shape, enhances propulsive efficiency of the ship, and can... | 10/05/2010 |
| 7802531 | Rudder for ships A rudder for ships having a rudder blade which has a leading edge and a trailing edge. The rudder blade has two superimposed rudder blade sections; the leading edge sections of which are offset such that a first leading edge section is offset port or starboard and a... | 09/28/2010 |
| 7775173 | Sailboat rudder A rudder mechanism for use upon a sailboat is capable of being raised or lowered at the discretion of the boater using a single connected cable operating system, so that the system may be called a “one-pull” system for both raising and for lowering the rudder. T... | 08/17/2010 |
| 7661379 | Propulsion and steering arrangement for a ship The invention relates to a steering and propulsion arrangement for a ship. The inventive steering and propulsion arrangement comprises a screw propeller 3 and a rudder 6. A streamlined propulsion bulb 10 is made integral with or fixedly connecte... | 02/16/2010 |
| 7591230 | Rudder for ships In a rudder for ships composed of a rudder blade with a rudder post (40) held and supported in a rudder trunk (20), the rudder trunk (20) is made of a fiber composite material and is inserted into a nautical outer trunk tube (90) made of ... | 09/22/2009 |
| 7568443 | Boat rudder with integrated dynamic trim foils A rudder and dynamic trim adjusting apparatus for a boat includes a rudder, a rudder shaft extending from the rudder and being rotatable about a longitudinal axis thereof to rotate the rudder, trim fins extending from the rudder, along at least one transverse axis t... | 08/04/2009 |
| 7430976 | Twist and stow rudder A retraction system for rudders for small boats having a deck comprising a rudder means connecting said rudder to the rear of a boat enabling said rudder to pivot on an axis such that when the rudder is retracted, ... | 10/07/2008 |
| 7418912 | Steering system and an associated vessel A steering system for a vessel is provided. The steering system includes an electric motor assembly and a steering linkage for transmitting the rotational output of the electric motor assembly to the vessel's rudder. The steering system may include at least three li... | 09/02/2008 |
| 7370593 | Windsurfing catamaran vessel An improved windsurfing catamaran type vessel. The illustrated vessel has an improved steering mechanism that includes a relatively stiff but bendable plastic rod that is directly received within one or more guiding passageways or grooves formed in the plastic hull ... | 05/13/2008 |
| 7337740 | High load balanced rudder It is proposed in order to create a high load balanced rudder (100) with a rudder blade (10), whereby the rudder blade (10) is rotatable over a rudder post (11) and the rudder post (11) is placed in a rudder port (12) and th... | 03/04/2008 |
| 7316194 | Rudders for high-speed ships A high-speed water vessel including a steering arrangement for reducing cavitation and its effects. The arrangement includes a twisted rudder pair located downstream of a high-speed propulsor. The rudder pair may also be contoured at a bottom portion thereof. The pr... | 01/08/2008 |
| 7255057 | Ramp for pontoon boat A ramp for a pontoon boat on which a boat user can come and go from it without having to get wet. Rotatably attached to the outboard end of the ramp is a cylindrical float which not only keeps the ramp and user afloat but also acts like a roller enabling the ramp to... | 08/14/2007 |
| 7200973 | Wire reinforced thermoplastic coating A structural reinforcing layer made from wire, a structural reinforcing composite layer made from wire, and the resulting load bearing structures made from or retrofitted with wire reinforced plastics and cements. Said layers and structures made from monofilament me... | 04/10/2007 |
| 7172473 | Rudder indicator A rudder position indicator apparatus includes a cam mounted on a steering linkage of a watercraft. The steering linkage is or an outdrive. When the rudder or an outdrive is in a straight position, the cam activates a micro switch, which in turn, supplies a ground f... | 02/06/2007 |
| 7165501 | Sail conversion kit and method for small watercraft An assembly for converting a non-sailing boat to a sailboat comprises a sailing keel adapted to be removably attached to the keel of a boat, a first and a second support frame, one or more straps connected on a first end to the sailing keel and connected on a second... | 01/23/2007 |
| 7156034 | Steering system for boat A steering system for a boat can include a main switch for turning power on and off, an emergency stop switch for stopping an engine, a steering wheel for operation by an operator, a steering wheel displacement sensor for detecting the operator's displacement of the... | 01/02/2007 |
| 7128011 | Remote tiller controller A remote tiller control system includes a drive unit mounted to the tiller. The drive unit is adapted to move the tiller back and forth when selectively powered. A handheld remote control transmitter unit is provided to remotely control the drive unit and thus the p... | 10/31/2006 |
| 7121220 | Steering mechanism for watercraft The invention relates to an apparatus for and method of automatically actuating the movement of a rudder of a watercraft between a steering and a non-steering position in response to the speed of the watercraft. This invention is particularly applicable for use in j... | 10/17/2006 |
| 7112109 | Propulsion system for ships, in particular for cruise vessels For avoiding a high permanent load of the main and control drives rotatable around the vertical axis for ships for the straight forward sailing by a small and compact course keeping rudder system provided for this purpose, for a propulsion system (10) for shi... | 09/26/2006 |
| 7063031 | Wake control device for boat A wake control device for a boat, including a mounting member pivotally securable to the boat aft for pivoting about a first axis substantially transverse to the boat aft, a rudder member secured to the mounting member for pivoting about a second axis substantially ... | 06/20/2006 |
| 7018252 | Watercraft control mechanism A watercraft includes a watercraft control mechanism that is capable of steering, decelerating, and/or trimming a watercraft without causing the stern to elevate and the bow to dive; steers or assists steering in off-power situations; steers, trims and/or decelerate... | 03/28/2006 |
| 6966808 | Power surfboard A power surfboard is disclosed to include a surfboard equipped with an engine and a propeller for propelling on the sea against sea waves, a rudder pivotally provided at the bottom side of the surfboard, and a collapsible control handle coupled to the surfboard for ... | 11/22/2005 |
| 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 |
| 6945186 | Rudder with sliding pivoting piston coupling The invention relates to a rudder for sea vessels, consisting of a main rudder and a fin which is coupled thereto by means of a vertical piston (15), restrictively guided by the main rudder and provided with a horizontal piston (11) The vertical piston... | 09/20/2005 |
| 6938567 | Multi-functional sailboard A multi-functional sailboard includes a body having a seating section and a dagger. A mast section is connected to the bow of the body and is movable between raised and lowered positions. The mast section includes a stationary mast and a movable mast. The two may be... | 09/06/2005 |
| 6920744 | Apparatus and method for cutting and harvesting infestations of aquatic vegetation and/or skimming algae/floating vegetation A harvester and method for harvesting aquatic algae or floating vegetation in shallow areas of water bodies, such as lakes is described. The harvester is manually operated. The harvester moves on hollow wheels that are capable of adjusting the buoyancy of the harves... | 07/26/2005 |
| 6880478 | Two degree of freedom rudder/stabilizer for waterborne vessels A method and apparatus for steering a vessel comprising a member rotatable around a first and a second axis. ... | 04/19/2005 |
| 6868317 | Steering control system and method for watercraft A steering system for a watercraft provides a position command signal indicative of a position of a rudder. An azimuth or location sensor senses an azimuth or a location of the watercraft, respectively. A control data input device selectively provides a control devi... | 03/15/2005 |
| 6739276 | Replaceable, reflecting kayak rudder system with pedal and trim adjusting features An improved rudder system and pedal system for use in a watercraft such as a kayak. The rudder assembly includes a rudder housing having a push rod operably linked to a rudder blade positioned in the housing. A rudder control cord passes through a fairlead located a... | 05/25/2004 |
| 6733349 | Jet propulsion boat A jet propulsion boat having a longitudinally disposed tunnel comprises a drive unit for powering a screw propeller, and a pressure chamber with a constricting passage for housing the propeller. The pressure chamber has an upper half section integral with the boat h... | 05/11/2004 |
| 6702630 | Auxiliary keel system for marine crafts powered by jet propulsion systems The invention relates to an auxiliary system for providing positive steering to marine crafts using jet propulsion systems, typically personal jet driven watercrafts such as jet boats and jet skis. In one embodiment, it includes, among other features, a c... | 03/09/2004 |
| 6695654 | Retractable rudder system for water jet pump vessels The invention discloses a retractable rudder device attached to the water jet nozzle of a watercraft. In a non-deployed condition, the rudders are latched in position and completely out of the water stream underneath the craft. When deployed, two rudders ... | 02/24/2004 |
| 6691633 | Pontoon paddle boat A collapsible pontoon paddle boat that includes inflatable pontoons that may be deflated, and a series of frame pieces that may be disassembled. The frame structure includes metal tubes that snap into anchors that are integrally formed on the sides of the... | 02/17/2004 |
| 6687579 | Flexible and fault tolerant networked steering system A marine vessel steering system having a bus to which an autopilot interface unit (AIU) containing an autopilot function is coupled. The system having at least one steering location at which autopilot function controls are positioned and coupled through a... | 02/03/2004 |
| 6684804 | Rudder construction A rudder construction for use particularly in light vessels, for example, in kayaks, and including a rudder blade (1) attached permanently to the hull (11) of the vessel and equipped with a thinned zone (9) to allow the main part of the rudder blade to tu... | 02/03/2004 |
| 6578506 | Aft hung hydrofoil for reduction of water resistance of partially immersed sailing vessels The invention features a hydrofoil device for reducing wake formation on a partially immersed hull of a sailing or motor vessel.... | 06/17/2003 |
| 6561858 | Auxiliary keel system for marine crafts powered by jet propulsion systems The invention relates to an auxiliary system for providing positive steering to marine crafts using jet propulsion systems, typically personal jet driven watercrafts such as jet boats and jet skis. In one embodiment, it includes, among other features, a c... | 05/13/2003 |
