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| Number | Title | Issue Date |
| 8070538 | Jet pump of personal watercraft A jet pump of a personal watercraft of the present invention includes a pump casing 10 provided with a fairing vane part including a plurality of fairing vanes 12, and the front portion of each of the fairing vanes 12 has two attack angles which... | 12/06/2011 |
| 8066538 | Jet boat with engine-balance system A jet boat comprising an engine-balance system, the engine-balance system comprising a first impeller and a second impeller, wherein water can be driven out of the first impeller for forward motion and water can be selectively driven out of the second impeller, regu... | 11/29/2011 |
| 7892053 | Commonly actuated trim and reverse system for a jet propulsion watercraft A commonly actuated trim and reverse system for a jet propulsion watercraft is provided. The system includes a movable actuator connected to a movement transfer mechanism. The movement transfer mechanism is operable to adjust both the trim angle of the steering nozz... | 02/22/2011 |
| 7874883 | System for steering and maneuvering a watercraft propelled by a water jet A system for steering a watercraft propelled by a water jet includes a control lever supported to pivot rightward and leftward about a first control axis, a nozzle supported on the watercraft to pivot rightward and leftward and through which water is discharged from... | 01/25/2011 |
| 7387552 | Trim adjusting device for small surface boat A trim adjusting device for a surface boat is provided that includes a nozzle for projecting jet water rearward arranged rearwardly of a jet propeller arranged in a boat body; a nozzle drive mechanism connected to the nozzle for operating the nozzle upward or downwa... | 06/17/2008 |
| 7364480 | Engine output control system for water jet propulsion boat A jet-propelled watercraft can include an engine output control system that adjusts the output of the engine based on a steering force and the engine speed. The control system can also be configured to detect abnormalities in the steering force sensor and to prohibi... | 04/29/2008 |
| 7300322 | Outboard motor An outboard motor is equipped with a centrifugal clutch located between the crankshaft of an engine and a rotor of an electric motor for, when the engine operates, transmitting its output to through the rotor to a propeller, and with a motor output transmission mech... | 11/27/2007 |
| 7228935 | Attachment pin for an exhaust-gas muffler The invention relates to an attachment pin (1) for fixing an exhaust-gas muffler (2) in an apparatus part (4) of a portable handheld work apparatus (5) driven by an internal combustion engine. The exhaust-gas muffler (2) includes e... | 06/12/2007 |
| 7216601 | Apparatus and method for a dual hull boat with control gate The current invention is an apparatus and method for an inner and outer dual hull boat capable of transforming between different levels of planing ability. The design is a gateway in the outer hull which allows water to pass through the void between the inner and ou... | 05/15/2007 |
| 7217165 | Waterjet steering and reversing apparatus Steering and reversing apparatus for a waterjet-powered marine vessel, the waterjet having an intake duct, a diffuser, and a steering nozzle and producing a rearward water stream flowing from the steering nozzle, the apparatus comprising: a nozzle pivot pivotably at... | 05/15/2007 |
| 7201621 | Portable bow thruster for small boats A portable bow thruster for use on the bow of a boat in a body of water having a water line. The bow thruster includes a blower assembly for producing an air flow to provide thrust, an exhaust air duct for expelling the air flow from the blower assembly, pivoting me... | 04/10/2007 |
| 7174842 | Boat propulsion system A boat propulsion system includes a plurality of positive displacement pumps which having high discharge head and having inlets and outlets therein and a controlling panel having circuits, wherein the pumps are mounted on a bottom of a boat and driven by a motive po... | 02/13/2007 |
| 7140930 | Thrust control device for jet propulsion watercraft A thrust control apparatus for a jet propulsion watercraft is provided. The thrust control apparatus includes a throttle sensor for detecting a fully-closed operation of a throttle of the engine, a steering sensor for detecting steering of a steering device more tha... | 11/28/2006 |
| 7134923 | Retractable rudder assembly for a watercraft The assembly includes a nozzle adapter rotatably mounted via a pair of axles onto a jet nozzle of a personal watercraft. A hinge rotatably connects a rudder and cap onto the nozzle adapter. A torsion spring on the hinge retracts and retains the rudder and cap in a p... | 11/14/2006 |
| 7124698 | Auxiliary facilities for the maneuvering of submerged water jet propelled sea craft The hull of a submerged sea craft adjacent its stern end is provided with auxiliary facilities for controlled maneuvering operations under low speed conditions, including steering, stopping and negative thrust backing performed independently of main propulsion of th... | 10/24/2006 |
| 7037150 | Method and apparatus for controlling a waterjet-driven marine vessel A control system and apparatus for controlling waterjet-driven marine vessels is disclosed. Some aspects allow for generation of a plurality of actuator control signals from a single vessel control signal, such as those provided by vessel control apparatus. A contro... | 05/02/2006 |
| 6976891 | Underwater sound and bubbles for powered watercraft Sound and bubble producing apparatus formed by a channeled member having an air inlet and outlet immersible in a body of water, with said outlet accompanied by structure that casuse air bubbles and sound to be emitted from said outlet when immersed the body of water... | 12/20/2005 |
| 6932661 | Steering and directional reversing control for waterjet propulsion Waterjet flow emerging from a jet propulsor body through a cross-sectionally circular duct is conducted through a cross-sectionally rectangular duct passage extending through transition and exhaust aft sections attached to and angularly adjusted relative thereto. Un... | 08/23/2005 |
| 6932013 | Maneuvering of submerged waterjet propelled sea craft The stern hull portion of a sea craft through which main exit flow channels extend to projecting jet propulsion nozzles, is provided with facilities for controlled maneuvering of the sea craft, including steering, stopping, negative thrust backing and docking withou... | 08/23/2005 |
| 6926567 | Directional steering controlled jet propulsion An elongated fluid dynamic water jet type of propulsion body receives an inflow of fluid through inlet openings for entry into a jet propulsor from which an outlet jet emerges for passage through an internal transition passage to an exit end between two pairs of hor... | 08/09/2005 |
| 6905381 | Small watercraft and actuator for small watercraft A jet-propulsion small watercraft, comprises a water jet pump that pressurizes and accelerates water taken in from outside and ejects the water to propel the watercraft, a steering system configured to steer the watercraft by changing an ejection direction of the wa... | 06/14/2005 |
| 6896563 | Joystick steering apparatus for watercraft A joystick apparatus for steering a waterjet propelled watercraft includes: (a) a joystick comprising at least three movably interconnected swinging arms, with a first and third one of the swinging arms being generally vertically oriented, and a second one of the sw... | 05/24/2005 |
| 6773319 | Water jet powered floating device for pools The present invention is a water jet powered floatable device for an above-ground pool or an in-ground pool comprising, in combination, a floatable device and a water flow conduit system with a control valve to direct the exiting of the water either downwardly in th... | 08/10/2004 |
| 6729931 | Turbine mechanism with directional control for toy watercraft A turbine assembly with directional control for use in a toy watercraft, including: a turbine housing defining an impeller cavity and including a forward opening and a rearward opening; a directional control valve positioned in the impeller cavity and having a valve... | 05/04/2004 |
| 6688251 | Vehicle of immersion forced by hydrodynamic flow (VIFHF) A submersible vehicle of diverse use that eliminates the compartments of ballast, and at the same time, has a horizontal displacement system and new direction. The vehicle includes a water pump adapted to generate a flow of water; an admission duct to rec... | 02/10/2004 |
| 6663447 | Method and system for controlling thrust of watercraft during various steering conditions A system for controlling thrust of a jet propulsion type watercraft during various steering conditions. The system comprises a thrust mechanism for providing jet propulsion thrust, a throttle regulator for regulating thrust provided by the thrust mechanis... | 12/16/2003 |
| 6645018 | Boat propulsion device A vessel propulsion system having a suction casing (4) configured with a suction inlet (4a) opening at a vessel bottom (1b), a suction flow path (4b) inclined to rearwardly ascend from the suction inlet (4a), and an impeller chamber (4c) formed horizontal... | 11/11/2003 |
| 6634912 | Controlled thrust steering system for watercraft A watercraft of the jet propulsion type comprising a steering mechanism, a throttle control mechanism, a thrust mechanism, a throttle regulator and a controlled thrust steering system. The steering mechanism has a straight-ahead position. The steering mec... | 10/21/2003 |
| 6604480 | Fast current rescue boat A remotely controlled rescue craft for use in fast moving water to rescue victims. A line is strung and secured across the moving water and the craft is tethered to the line. The craft has a water passage port that runs through the length of the craft. Wi... | 08/12/2003 |
| 6604479 | Autopilot-based steering and maneuvering system for boats A boat featuring an autopilot-based steering and maneuvering system. The steering system uses a specially integrated autopilot that remains engaged unless the operator is actively commanding the boat to change course. For example, in a boat in which steer... | 08/12/2003 |
| 6579133 | Boat positioning apparatus and system A boat positioning apparatus and system are disclosed. The apparatus and system may include a boat having a hull, an outboard motor, and a thruster. The thruster has a housing that is secured to the transom to maintain a fixed position relative to the tra... | 06/17/2003 |
| 6554661 | Controlled thrust steering system for watercraft A watercraft of the jet propulsion type comprising a steering mechanism, a throttle control mechanism, a thrust mechanism, a throttle regulator and a controlled thrust steering system. The steering mechanism has a straight-ahead position. The steering mec... | 04/29/2003 |
| 6530812 | Secondary thrust arrangement for small watercraft A jet propulsion unit for a small watercraft including a secondary thrust arrangement. The secondary thrust arrangement includes a primary valve and a secondary valve arrangement. At least one discharge port is disposed on a hull of the watercraft. A jet ... | 03/11/2003 |
| 6520815 | Controlled thrust steering system for watercraft A watercraft of the jet propulsion type comprising a steering mechanism, a throttle control mechanism, a thrust mechanism, a throttle regulator and a controlled thrust steering system. The steering mechanism has a straight-ahead position. The steering mec... | 02/18/2003 |
| 6491554 | Watercraft with steerable planing surface A watercraft having a turnable (i.e., pivotable) planing surface, preferably with at least one skeg projecting generally vertically downward from the planing surface. This structure is designed to provide improved steering performance of watercraft, parti... | 12/10/2002 |
| 6453835 | Steering and thrust control system for waterjet boats A waterjet-driven boat has a reversing bucket for controlling forward/reverse thrust and a rotatable nozzle for controlling sideward forces. A bucket position sensor is connected to the reversing bucket, and the bucket is controlled using the output of th... | 09/24/2002 |
| 6443785 | Method and apparatus for self-deploying rudder assembly A self-deploying rudder assembly for use with a water craft including an exhaust port having a exhaust stream includes a mounting assembly and a pivoting rudder blade assembly. The pivoting rudder blade assembly typically includes a thrust plate attached ... | 09/03/2002 |
| 6428371 | Watercraft with steer responsive engine speed controller A watercraft with a steer-responsive speed controller generates thrust when the steerable propulsion unit is turned beyond a predetermined angular threshold. Turning the steering wheel beyond the threshold causes the speed controller to increase engine sp... | 08/06/2002 |
| 6415729 | Side plate rudder system The present invention relates to an improved steering system for a water craft and an improved method of steering. The steering system includes at least two variable camber plates or rudders mounted to a hull of the water craft for imparting a steering fo... | 07/09/2002 |
| 6375522 | Motorized nautical recreational vessel The invention concerns a water sport machine consisting of a hull equipped with a pump-jet, the hull is rigid and provided with an inflatable envelope. The pump-jet consists of a light duty engine combined with a water sucking propeller located in a sucti... | 04/23/2002 |
