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| Number | Title | Issue Date |
| 7357687 | Marine propulsion steering system A marine propulsion steering apparatus includes a steering nozzle having a central opening therethrough which surrounds a marine propulsion drive shaft and propeller extending from a hull or propulsion module. The nozzle is pivotally mounted for angular movement in ... | 04/15/2008 |
| 7341496 | Fast sea-going ship with a double bottom and a waterjet drive The invention relates to a high-speed, sea-going ship comprising a double hull and a water-jet drive, the latter consisting of at least one pump assembly for generating the water-jet and at least one drive motor for the pump assembly. According to the invention, the... | 03/11/2008 |
| 7305928 | Method for positioning a marine vessel A vessel positioning system maneuvers a marine vessel in such a way that the vessel maintains its global position and heading in accordance with a desired position and heading selected by the operator of the marine vessel. When used in conjunction with a joystick, t... | 12/11/2007 |
| 7267068 | Method for maneuvering a marine vessel in response to a manually operable control device A marine vessel is maneuvered by independently rotating first and second marine propulsion devices about their respective steering axes in response to commands received from a manually operable control device, such as a joystick. The marine propulsion devices are al... | 09/11/2007 |
| 7226327 | Outboard drive for boats An outboard drive for boats, having a steerable underwater housing (1) which has a wing-profiled portion (2). Projecting at an approximately 90 degree angle from the aft part of one side face (31) of the wing profile is a face portion (32... | 06/05/2007 |
| 7186157 | Turning propeller drive for a boat A rotatable propeller drive (1) for a boat, where the propeller drive (1) includes an upper fixing plate (4) adapted for rotationally fixed attachment to the hull bottom (2) of the boat. A lower underwater housing (6) is provided o... | 03/06/2007 |
| 7131385 | Method for braking a vessel with two marine propulsion devices A method for controlling the movement of a marine vessel comprises steps that rotate two marine propulsion devices about their respective axes in order to increase the hydrodynamic resistance of the marine propulsion devices as they move through the water with the m... | 11/07/2006 |
| 7115007 | Stern unit for marine craft A stern unit of marine craft that comprises a casing, a propeller, a propeller shaft, and at least one rudder actuated by hydraulic pistons is described. The casing is open at the bottom, with its bottom surface having a parabolic shape in cross-section. The casing ... | 10/03/2006 |
| 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 |
| 7070469 | Dual propeller surface drive propulsion system for boats The dual propeller surface drive propulsion system for boats is a combined propulsion and steering system for vessels with inboard engines comprising an enclosed thrust bearing assembly mounted to the transom of the vessel, a transom box mounted to the transom of th... | 07/04/2006 |
| 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 |
| 7061147 | Superconducting electrical machines for use in navy ships Superconducting electrical machines, for example motors or generators, especially high-temperature superconducting machines, include a rotor equipped with superconductors, especially high-temperature superconductors. They further include a rotor cryostat, a rotor sh... | 06/13/2006 |
| 7033234 | Method of steering a boat with double outboard drives and boat having double outboard drives A method of steering a planning V-bottomed boat with double individually steerable outboard drive units with underwater housings (6), which extend down from the bottom (1) of the boat. When running at planning speed straight ahead, the underwater housi... | 04/25/2006 |
| 7001228 | Water jet pump A water jet pump is provided which reduces cavitation and thereby allows an improvement in pump efficiency. In a water jet pump in which an impeller driven for rotation and is provided in a cylindrical housing, an edge portion of the outer circumferential surface of... | 02/21/2006 |
| 6994602 | Ship propulsion system A ship propulsion system includes at least one marine propeller, at least one electric motor which drives the at least one marine propeller, and an inverter-fed power supply system which supplies the at least one electric motor with electric power. The power supply ... | 02/07/2006 |
| 6966804 | Propulsion unit of marine vessel A marine vessel includes a rudder support structure attached to its hull and a rudder device attached to the rudder support structure in a manner allowing pivotal movement of the rudder device relative to the rudder support structure. A first drive train includes a ... | 11/22/2005 |
| 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 |
| 6935907 | Pod unit A pod unit including a pod housing (1) and an assembly unit (6), a so called seating, for the pod housing (1), wherein the seating (6) has a lower portion (6A) and an upper portion (6F) as well as a base (15) for the ... | 08/30/2005 |
| 6883451 | Outboard motor steering system An outboard motor steering system for an outboard motor mounted on a stern of a boat and having an internal combustion engine at its upper portion and a propeller with a rudder at its lower portion powered by the engine to propel and steer the boat. The system inclu... | 04/26/2005 |
| 6790108 | Boat propulsion system A boat propulsion system for propelling a boat through water with debris in the water and shallows. The boat propulsion system includes a motor assembly being designed for being positioned in a boat. A propeller member is operationally coupled to the motor assembly ... | 09/14/2004 |
| 6783410 | Drive means in a boat Boat propeller drive unit with an underwater housing (5), which is solidly joined to a boat hull and has pulling propellers (15, 16) on the forward facing side of the housing. At the aft edge of the underwater housing, a rudder is mounted, comprising a... | 08/31/2004 |
| 6705907 | Drive means in a boat Boat propeller drive with an underwater housing which is connected in a fixed manner to a boat hull and has tractor propellers arranged on that side of the housing facing ahead. In the rear edge of the underwater housing, a rudder blade is mounted for pivoting about... | 03/16/2004 |
| 6503109 | Swivel drive assembly A swivel drive assembly for an electrically powered boat. The swivel drive assembly comprising a housing which has a propeller shaft extending therethrough and a propeller mechanically coupled to the propeller shaft. The swivel drive assembly further incl... | 01/07/2003 |
| 6165031 | Marine propulsion and steering unit A marine propulsion and steering unit (10) comprises a pod (13) having front and rear ends, a driving machine (14), e.g. a drive motor, accommodated in the pod, a substantially horizontal propeller shaft (15) drivingly connected to the driving machine and... | 12/26/2000 |
| 5902157 | Rudder attachment for trolling motor An electric trolling motor has a motor body with a propeller, and a vertical shaft extending upward from the motor body. A rudder attachment having forward, rearward and lower portions is secured to the motor. The forward portion is a diagonal blade locat... | 05/11/1999 |
| 5638765 | Hydrofoil assembly for marine use, and method for mounting the same A method and an assembly are provided for mounting a pair of hydrofoils to an outboard engine without drilling holes or otherwise defacing the anticavitation plate of the engine. The assembly includes a mounting plate, an adaptor, and a pair of hydrofoils... | 06/17/1997 |
| 5439403 | Marine tractor surface drive system A marine tractor surface drive propulsion system is provided with a housing construction that can be retrofit to existing boat hulls and does not require a dedicated hull, with a parallel countershaft transmission that provides the efficiencies of a tract... | 08/08/1995 |
| 5279509 | Marine surface drive A surface drive is provided mounted from the stern of a hull for up and down swinging movement in the manner of an outdrive unit, but wherein the surface drive includes a forwardly and upwardly inclined propeller shaft with a forward extension thereof cou... | 01/18/1994 |
| 5231950 | Hydrofoil for watercraft A hydrofoil for watercraft is provided. The hydrofoil includes a generally flat body including an upwardly extending wing for providing low speed torque control and rudders extending from the bottom surface of the body to provide high speed torque control... | 08/03/1993 |
| 5167547 | Rudder for watercraft Several embodiments of jet propelled watercraft including steering rudders pivotally supported by the steering nozzle of the jet propulsion unit for providing a steering affect at low speeds and when coasting. The steering rudder is selectively moveable b... | 12/01/1992 |
| 5129346 | Rudder sleeve for boat rudder A rudder sleeve for enlarging the surface area of a boat rudder includes first and second stainless steel plates having four side edges defining first and second opposed major hydrodynamic surfaces. The rudder sleeve has a substantially rectilinear periph... | 07/14/1992 |
| 5085603 | Marine drive with steering torque compensation A marine drive (20) has a trim tab (50) with a flair (56) on one side (58) thereof at an upper portion (52). When the drive is trimmed in, the flair is unshrouded by the anti-ventilation plate (34) and diverts mainstream water flow therearound, which prod... | 02/04/1992 |
| 5037337 | Steerable propeller drive apparatus The invention comprises a steerable propeller unit for use in place of a steerable rudder and fixed propeller on watercraft employing inboard straight line propulsion systems. A coupler is fitted to the rear of the drive shaft projecting from the craft in... | 08/06/1991 |
| 5016553 | Vector steering control system The device comprises a thruster assembly which consists of a housing, thruster motor, thruster propeller, and thruster motor control device. When integrated into a stern mounted main drive, the thruster housing becomes integral with the main drive. The th... | 05/21/1991 |
| 5005507 | Hydrofoil with retractable plate A hydrofoil adapted for attachment to a boat propulsion unit. The hydrofoil defines a recessed area on its underside in which a trolling plate may be positioned. A pivot shaft couples the plate to the hydrofoil permitting upright deployment of the plate f... | 04/09/1991 |
| 4944702 | Housing rudder for electric trolling motor A device is provided for attachment to the submerged portion of an electric trolling motor to serve as a rudder and to further provide quieter operation and resistance to fouling by aquatic vegetation. The device, which may be of integral or two piece con... | 07/31/1990 |
| 4929203 | Marine propeller drive system A propeller drive system for marine applications having a constant velocity universal joint for articulating the propeller shaft without transmitting the propeller thrust therethrough, the propeller thrust being delivered to the boat hull in line with an ... | 05/29/1990 |
| 4908766 | Trim tab actuator for marine propulsion device An improved trim tab actuator for a watercraft for permitting the operator to automatically select any of a plurality of steering effects by automatic control of the trim tab. The trim tab is positioned in response to sense steering and watercraft conditi... | 03/13/1990 |
| 4787867 | Trim tab actuator for marine propulsion device An improved trim tab actuator for an outboard drive for assisting in steering by creating a hydrodynamic steering force immediately upon sensing of a steering input force. The mechanism includes an operator control that permits the operator to select from... | 11/29/1988 |
| 4762079 | Trim tab actuator for marine propulsion device A trim tab actuator for a marine propulsion device wherein a plurality of watercraft running conditions are sensed and a trim tab is automatically positioned so as to maintain the watercraft in its preset course as dictated by the measured preset conditio... | 08/09/1988 |
