Direction Control For Fluid Jet Patents (Class 440/40)
  • Patent number: 10315741
    Abstract: An underwater propulsion apparatus 1 according to an embodiment includes a main body 2 having a conical tail portion, a channel 4 having an inlet 6 in the outer circumferential surface of the main body 2 and a nozzle 7 on the side downstream of the inlet 6 and in the tail portion, at least one pump 3 having an impeller 5 provided in the channel 4, a diffuser 8 attached to the main body 2 so as to surround the outer circumference of the nozzle 7, and a plurality of direction control wings 9 attached to the outer surface of the main body 2 and located in positions downstream of the nozzle 7 and close thereto, each of the plurality of direction control wings 9 having an upstream end pivotally supported by the main body 2.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: June 11, 2019
    Assignee: National University Corporation Tokyo University Of Marine Science And Technology
    Inventors: Hayato Kondo, Masahiro Osakabe
  • Patent number: 10011342
    Abstract: A steering control system for a watercraft includes a pivoting steering tiller manually operated and operatively connected to a direction changing member acting on or into the water, such as a rudder blade or an outboard motor; and a system locking the steering tiller in the steering position, which can be activated for keeping the tiller in a predetermined pivoting position and deactivated for allowing the tiller to be moved in a pivoting position to carry out a change in direction. According to the invention the locking system is switchable by way of switching actuators that are controlled by a control member provided on the arm.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: July 3, 2018
    Assignee: Ultraflex S.p.A.
    Inventors: Marcella Gai, Enrico Pagani
  • Patent number: 9937994
    Abstract: One embodiment of the invention comprises a method for controlling a marine vessel having a first steerable propulsor, a corresponding first reversing device, a second steerable propulsor and a corresponding second reversing device. The method comprises receiving a first vessel control signal corresponding to a rotational movement and no translational movement command, generating at least a first actuator control signal and a second actuator control signal in response to the first vessel control signal, coupling the first actuator control signal to and controlling the first steerable propulsor and the second steerable propulsor, and coupling the second actuator control signal to and controlling the first reversing device and to the second reversing device. The method creates rotational forces on the marine vessel with substantially no translational forces on the marine vessel.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: April 10, 2018
    Inventor: Robert A. Morvillo
  • Patent number: 9067664
    Abstract: A marine vessel is disclosed having a control system for automatically controlling thrusters for steering the marine vessel for the purpose of aiding an angler who has hooked a fish. The control system will automatically control the thrusters based on the positions of the propulsion unit control levers if the control levers are split. The control system may also control the thrusters if the propulsion unit control levers have moved past a predetermined threshold. The predetermined threshold can be set by the operator of the marine vessel.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: June 30, 2015
    Assignee: Caterpillar Inc.
    Inventors: Fu P. Yuet, Hashim Marzuq, Merritt P. Callaghan, Patrick Lee, Andrew Hutchison
  • Patent number: 9016220
    Abstract: A water vessel having variable geometry is described. The water vessel comprises: a frame; a plurality of hulls coupled to the frame, each one of the plurality of hulls coupled to the frame by a folding mechanism and configured to move, relative to the frame, between a deployed configuration and a stowed configuration in which at least one dimension of the water vessel is reduced in respect of the deployed configuration; a plurality of thruster assemblies configured to provide thrust to the water vessel, each one of the plurality of thruster assemblies being coupled to a respective one of the plurality of hulls; and a protective device coupled to a respective one of the plurality of thruster assemblies, the protective device for preventing intake of foreign objects into the respective one of the plurality of thruster assemblies.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: April 28, 2015
    Assignee: Clearpath Robotics, Inc.
    Inventors: Ryan Christopher Gariepy, Patrick William Martinson, Mark Julian Podbevsek, Matthew Allen Rendall, Todd Willick
  • Patent number: 8973513
    Abstract: A craft including a body having a front end, a rear end, two sides miming between said ends, and an axis running generally from the rear end to the front end; and a water displacement system operable to displace water to propel the craft across water and to displace water to cause the craft to rotate about said axis. The craft includes a ballast tank capable of being at least partially filled with ballast to change a position of a center of gravity of the craft to assist in rotation of the craft when capsized. The craft also includes a rapid filling and emptying system for a ballast system of a craft in addition to a water displacement system, wherein the rapid filling and emptying system includes at least one ballasting intake through which water is passed from the water displacement system into said ballast system; and at least one ballasting outlet through which the water displacement system draws water from the ballast system.
    Type: Grant
    Filed: January 17, 2011
    Date of Patent: March 10, 2015
    Assignee: Rubber Ducky IP Pty Ltd
    Inventor: Aidan Morrison
  • Patent number: 8961248
    Abstract: A high mass/low pressure liquid propulsion device which includes:—two counter-rotating impellers mounted inside a housing;—an inlet which in use allows inflow of liquid into the housing on a first side of said impellers; an outlet which in use allows outflow of liquid from the housing on a second side of said impellers opposite to said first side;—means for driving said impellers;—wherein the improvement comprises the provision of means for reversing the drive to said impellers, such that the direction of flow of liquid through the device is reversed and liquid enters the device through said outlet, passes through said impellers, and leaves the device through said inlet.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: February 24, 2015
    Assignee: Propeller Jet Limited
    Inventor: Barry John Davies
  • Publication number: 20150050847
    Abstract: Personal watercraft and watercraft power systems that include a power pod for supporting a power plant and a propulsion unit. An engine or an electric motor and a pump assembly are enclosed in the power pod. One or more sponsons removably cooperate with the power pod via a mechanical interface, such as dovetail joints and/or interlocking channels, formed between the power pod and the respective sponsons. A plurality of tool-lessly operable mechanical interfaces, locking mechanism(s), and fluid or electrical signal connectors allow the sponson(s) to be selectively secured to the power pod such that the resultant watercraft is modular and transportable by a single person when necessary.
    Type: Application
    Filed: April 25, 2013
    Publication date: February 19, 2015
    Applicant: Bomboard LLC.
    Inventors: John H. West, Anders Stubkjaer
  • Patent number: 8882555
    Abstract: A remote controlled motorized buoy is provided for rescuing people in the water. The buoy may be controlled by a person with a remote control to navigate to the person in need. The buoy may have flotation mechanisms to keep the buoy right side up in rough water conditions and includes visual indicators to help the user keep track of the buoys location, such as a flag and beacon. When the buoy is near the swimmer, the swimmer may grab the buoy and the buoy may be remotely navigated to bring the swimmer to a safe location.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: November 11, 2014
    Inventors: Anthony C. Mulligan, Robert W. Lautrup
  • Patent number: 8858278
    Abstract: A method for controlling a marine vessel having a first steering nozzle, a reversing deflector and at least one of a bow thruster and a second steering nozzle is disclosed. The method comprises any of the acts of inducing a net transverse thrust to the marine vessel in response to a transverse thrust component signal, without substantially inducing any forward-reverse thrust or rotational thrust to the marine vessel, or inducing a net forward-reverse thrust to the marine vessel in response to a forward-reverse thrust component signal without substantially inducing any transverse thrust or rotational thrust to the marine vessel, or inducing a net rotational thrust to the marine vessel in response to the rotational thrust component signal without substantially inducing any forward-reverse thrust or transverse thrust to the marine vessel.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: October 14, 2014
    Inventor: Robert A. Morvillo
  • Patent number: 8849484
    Abstract: A system for controlling a marine vessel having first and second waterjets, corresponding first and second steering nozzles and corresponding first and second reversing buckets. The system comprises a speed control device for providing a first vessel control signal that corresponds to a speed to be provided to the marine vessel, a processor configured to receive the first vessel control signal and that is configured to provide at least one first actuator control signal coupled to the first and second waterjets, and at least one second actuator control signal coupled to the first and second steering nozzles and the first and to second reversing buckets. The system any of improves upon turns provided by conventional waterjet propulsion systems, improves upon slowing down or stopping marine vessels as is done by conventional waterjet propulsion systems, and improves upon the controllability of the waterjet propulsed marine vessel at low vessel speeds.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: September 30, 2014
    Inventor: Robert A. Morvillo
  • Publication number: 20140235120
    Abstract: A hydroplaning vessel that exceed speeds of 25 miles per hour with several stability and handling design improvements. It has an enhanced reactive suspension and inner hull lift system positioned in the vessel between an inner hull and a set of outer hulls. There are at least three outer hulls; a front outer hull and a mirror image pair of rear outer hulls, none of which can float on its own and all which have open transoms. Steering and braking are accomplished by a set of rear elevon flaps. The drive unit resides in the inner hull and is connected by an annular drive transmission, which is connected to the jet or prop drive, which resides on the outer hull.
    Type: Application
    Filed: March 14, 2014
    Publication date: August 21, 2014
    Inventor: Fred Pereira
  • Patent number: 8794171
    Abstract: A boat is provided with a steering arrangement comprising a main steering system and control-surface subsystem. The control-surface subsystem comprises a control-surface assembly attached to the stern of the boat and comprising a trim tab pivotally connected to the stern of the boat, and a skeg rotatably mounted by the trim tab. The control-surface assembly further comprises a trim-tab operating arrangement for pivoting the trim tab, and a skeg operating arrangement. The main steering system and the skeg operating arrangement can be selectively set to operate independently of each other, or in coordination with each other, in steering the boat.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: August 5, 2014
    Assignee: Gobbler Oil Spill Recovery Ltd.
    Inventor: Paul Frederick Jauncey
  • Patent number: 8727823
    Abstract: There is provided a water jet propulsion device 10 for a water vehicle, comprising a main duct 12 having a main inlet 14 that is arranged to be submerged in use and a main outlet 16; a pump disposed between the main inlet 14 and the main outlet 16; and a plurality of injection nozzles 40, 50, 60, 70 each arranged to selectively eject a jet of fluid into a different region A, B, C, D susceptible to cavitation, so as to re-energise the fluid flow in that region.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: May 20, 2014
    Assignee: Rolls-Royce PLC
    Inventors: Paul Fletcher, Paul J. Newton, John R. Webster
  • Patent number: 8707885
    Abstract: One aspect of the present invention includes a multi-functional bench system for an inflatable boat having a bottom wall, spaced apart first and second tubular side walls, and an outboard motor. The bench system includes a first seating unit, a second seating unit, and an adjustable bracing assembly. The first seating unit is snugly mounted to a portion of the first tubular side wall. The first seating unit includes a first leg assembly hingedly connected to a first handle assembly. The second seating unit is snugly mounted to a portion of the second tubular side wall. The second seating unit includes a second leg assembly hingedly connected to a second handle assembly. The adjustable bracing assembly is positioned about the bottom wall of the inflatable boat and securely interconnects the first and second leg assemblies.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: April 29, 2014
    Inventor: Tin Mac Nguyen
  • Patent number: 8700238
    Abstract: A marine vessel propulsion control apparatus is arranged to control a propulsion unit and a steering unit. The marine vessel propulsion control apparatus includes a joystick unit, and a control unit programmed to control an output of the propulsion unit and a steering angle of the steering unit in accordance with an output signal of the joystick unit. The joystick unit includes a lever that is tiltable from a neutral position and arranged to be operated by a marine vessel operator to command a heading direction and stem turning of a hull. The control unit is programmed to maintain the steering angle of the steering unit when the output of the propulsion unit is stopped.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: April 15, 2014
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Yuji Hiramatsu
  • Patent number: 8696393
    Abstract: The thruster pod that is made of a pump plate; a valve plate affixed to the pump plate, and a diaphragm mounted between the pump plate and the valve plate. The pump plate has juxtaposed pressure cavity and outlet cavity, and a partition separating the pressure cavity from the outlet cavity. The pressure cavity communicates with a source of water under pressure and the outlet cavity communicates with an outlet port. The valve plate has a control chamber facing the juxtaposed pressure and outlet cavities. The diaphragm is mounted between the juxtaposed pressure and outlet cavities and the control chamber for movement between a first position and a second position upon a change in pressure in the control chamber. A control valve is mounted in the valve plate for selectively changing a pressure in the control chamber and operating a diaphragm valve.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: April 15, 2014
    Assignee: College of the North Atlantic
    Inventor: Randal Joseph Harold Power
  • Publication number: 20140099845
    Abstract: A jet propulsion boat includes a boat body, a handle bar, an engine, a jet propulsion mechanism, a reverse gate, and a shift operating device. The handle bar is attached to the boat body. The handle bar extends in a width direction of the boat body. The engine is housed in the boat body. The jet propulsion mechanism is configured to generate a propulsion power from a drive power of the engine. The reverse gate is located rearward of the jet propulsion mechanism. The reverse gate is configured to move so as to change a direction of a jet flow from the jet propulsion mechanism. The shift operating device is rotatably attached to the handle bar about a shaft center parallel or substantially parallel to a center line of the handle bar. The shift operating device is configured to rotate so as to switch a position of the reverse gate.
    Type: Application
    Filed: May 10, 2013
    Publication date: April 10, 2014
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Kenichi FUJINO, I, Kenichi OTSUKA, Yukitaka OKAMOTO
  • Publication number: 20140080367
    Abstract: A water vessel having variable geometry is described. The water vessel comprises: a frame; a plurality of hulls coupled to the frame, each one of the plurality of hulls coupled to the frame by a folding mechanism and configured to move, relative to the frame, between a deployed configuration and a stowed configuration in which at least one dimension of the water vessel is reduced in respect of the deployed configuration; a plurality of thruster assemblies configured to provide thrust to the water vessel, each one of the plurality of thruster assemblies being coupled to a respective one of the plurality of hulls; and a protective device coupled to a respective one of the plurality of thruster assemblies, the protective device for preventing intake of foreign objects into the respective one of the plurality of thruster assemblies.
    Type: Application
    Filed: September 16, 2013
    Publication date: March 20, 2014
    Inventors: Ryan Christopher GARIEPY, Patrick William MARTINSON, Mark Julian PODBEVSEK, Matthew Allen RENDALL, Todd WILLICK
  • Patent number: 8668533
    Abstract: A waterjet based propulsion system and method that utilizes more than one waterjet outlet port and controls the selective application of power to the waterjets with a splitter gearbox thereby improving the efficiency of the marine craft at low and high speeds.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: March 11, 2014
    Assignee: Twin Disc, Inc.
    Inventor: Philip Rolla
  • Patent number: 8631753
    Abstract: A method and a system for controlling a marine vessel having first and second trim deflectors is disclosed. The first and second trim deflectors have a first surface having a first area and a second surface having a second area, wherein the second planar surface is coupled to the first surface. The method and system control the first and second trim deflectors to induce any of a net yawing force, a net rolling force, and a net trimming force to the marine vessel without inducing any other substantial forces to the marine vessel by controlling the first and second trim deflectors.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: January 21, 2014
    Inventor: Robert A. Morvillo
  • Patent number: 8613634
    Abstract: One embodiment of the invention comprises a method for controlling a marine vessel having a first steerable propulsor, a corresponding first reversing device, a second steerable propulsor and a corresponding second reversing device. The method comprises receiving a first vessel control signal corresponding to a rotational movement and no translational movement command, generating at least a first actuator control signal and a second actuator control signal in response to the first vessel control signal, coupling the first actuator control signal to and controlling the first steerable propulsor and the second steerable propulsor, and coupling the second actuator control signal to and controlling the first reversing device and to the second reversing device. The method creates rotational forces on the marine vessel with substantially no translational forces on the marine vessel.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: December 24, 2013
    Inventor: Robert A. Morvillo
  • Patent number: 8490569
    Abstract: Designs and techniques for fluid thrusters and vehicles that are powered by propelling fluids with fluid thrusters. Multiplex-thruster (MT) systems are disclosed that include a single thruster and a flow multiplexer with multiple channels to deliver thrusting flow in various directions.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: July 23, 2013
    Assignee: University of Southern California
    Inventor: Wei-Min Shen
  • Patent number: 8490558
    Abstract: A watercraft has first and second jet propulsion units. The first jet propulsion unit includes a first inlet, a first outlet, a second outlet, and a first valve. The second jet propulsion unit includes a second inlet, a third outlet, a fourth outlet, and a second valve. The watercraft also includes first and second discharge ports disposed on opposite sides of a longitudinal centerline, a first pipe fluidly communicating the first discharge port with the second outlet, a second pipe fluidly communicating the second discharge port with the second outlet, third and a fourth discharge ports disposed on opposite sides of the longitudinal centerline, a third pipe fluidly communicating the third discharge port with the fourth outlet, and a fourth pipe fluidly communicating the fourth discharge port with the fourth outlet.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: July 23, 2013
    Assignee: Consortium de Recherche BRP-Universiéde Sherbrooke S.E.N.C.
    Inventors: David Foley, Simon Richard, Real Dupont, Roger Rioux, Gilbert Lefrancois
  • Patent number: 8480445
    Abstract: A method for controlling a marine vessel having first and second steering nozzles and first and second trim deflectors comprises generating at least a first set of actuator control signals and a second set of actuator control signals. The first set of actuator control signals is coupled to and controls the first and second steering nozzles, and the second set of actuator control signals is coupled to and controls the first and second trim deflectors. The acts of generating and coupling the first set of actuator control signals and the second set of actuator control signals result in inducing any of a net yawing force, a net rolling force, and a net trimming force to the marine vessel without inducing any other substantial forces to the marine vessel by controlling the first and second steering nozzles and the first and second trim deflectors. Also disclosed is a system for controlling a marine vessel.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: July 9, 2013
    Inventor: Robert A. Morvillo
  • Publication number: 20130157530
    Abstract: A high mass/low pressure liquid propulsion device which includes: —two counter-rotating impellers mounted inside a housing; —an inlet which in use allows inflow of liquid into the housing on a first side of said impellers; an outlet which in use allows outflow of liquid from the housing on a second side of said impellers opposite to said first side; —means for driving said impellers; —wherein the improvement comprises the provision of means for reversing the drive to said impellers, such that the direction of flow of liquid through the device is reversed and liquid enters the device through said outlet, passes through said impellers, and leaves the device through said inlet.
    Type: Application
    Filed: August 31, 2011
    Publication date: June 20, 2013
    Inventor: Barry John Davies
  • Patent number: 8392040
    Abstract: A system for controlling a marine vessel having first and second waterjets, corresponding first and second steering nozzles and corresponding first and second reversing buckets. The system comprises a speed control device for providing a first vessel control signal that corresponds to a speed to be provided to the marine vessel, a processor configured to receive the first vessel control signal and that is configured to provide at least one first actuator control signal coupled to the first and second waterjets, and at least one second actuator control signal coupled to the first and second steering nozzles and the first and second reversing buckets. The system any of improves upon turns provided by conventional waterjet propulsion systems, improves upon slowing down or stopping marine vessels as is done by conventional waterjet propulsion systems, and improves upon the controllability of the waterjet propulsed marine vessel at low vessel speeds.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: March 5, 2013
    Inventor: Robert A. Morvillo
  • Publication number: 20130040513
    Abstract: The present invention relates to a hydraulic propeller enhancement method for enhancing the propelling force of a hydraulic propeller. The present invention uses a gas release outlet in the propeller at the area where the high-speed axial flow of water passes for guiding in a gas by means of a negative pressure subject to Bernoulli's principle. Thus, subject to Bernoulli's principle, gas compressible characteristic and Boyle's law and the arrangement of the contracted end piece of the nozzle to work as an air compressor for compressing air bubbles, the invention uses one single gas guide device and a negative pressure suction force to guide in air bubbles to enhance the propelling force of the hydraulic propeller.
    Type: Application
    Filed: August 12, 2011
    Publication date: February 14, 2013
    Inventor: ZUEI-LING LIN
  • Publication number: 20120318184
    Abstract: A craft including a body having a front end, a rear end, two sides miming between said ends, and an axis running generally from the rear end to the front end; and a water displacement system operable to displace water to propel the craft across water and to displace water to cause the craft to rotate about said axis. The craft includes a ballast tank capable of being at least partially filled with ballast to change a position of a centre of gravity of the craft to assist in rotation of the craft when capsized. The craft also includes a rapid filling and emptying system for a ballast system of a craft in addition to a water displacement system, wherein the rapid filling and emptying system includes at least one ballasting intake through which water is passed from the water displacement system into said ballast system; and at least one ballasting outlet through which the water displacement system draws water from the ballast system.
    Type: Application
    Filed: January 17, 2011
    Publication date: December 20, 2012
    Applicant: Rubber Ducky IP Pty Ltd.
    Inventor: Aidan Morrison
  • Publication number: 20120295500
    Abstract: A device according to an embodiment includes a base member, a slide member movable longitudinally relative to the base member, and a locking member disposed on the slide member. When the slide member moves in a first direction, an arm member rotates in a first direction, whereupon a bucket is caused to ascend by a force transmission member. When the slide member moves in a second direction, the arm member rotates in a second direction, whereupon the bucket descends. When the slide member moves to a neutral position, the bucket is brought to a neutral state. In the neutral state, a fixed protrusion is fitted into a neutral locking groove portion, thereby locking the slide member, and an indicator is located corresponding to an opening, thereby indicating the neutral state.
    Type: Application
    Filed: May 16, 2012
    Publication date: November 22, 2012
    Applicant: NHK SPRING CO., LTD.
    Inventor: Taishi OZAKI
  • Publication number: 20120282827
    Abstract: A boat is provided with a steering arrangement comprising a main steering system and control-surface subsystem. The control-surface subsystem comprises a control-surface assembly attached to the stern of the boat and comprising a trim tab pivotally connected to the stern of the boat, and a skeg rotatably mounted by the trim tab. The control-surface assembly further comprises a trim-tab operating arrangement for pivoting the trim tab, and a skeg operating arrangement. The main steering system and the skeg operating arrangement can be selectively set to operate independently of each other, or in coordination with each other, in steering the boat.
    Type: Application
    Filed: May 3, 2012
    Publication date: November 8, 2012
    Applicant: GOBBLER OIL RECOVERY BOATS LTD
    Inventor: Paul Frederick Jauncey
  • Patent number: 8262424
    Abstract: A system and related methods for manned and/or unmanned marine transportation involving equipping a vessel capable with a linear pump for propelling the vessel through or substantially over a body of water.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: September 11, 2012
    Inventors: Anthony C. Ross, Russel Ross
  • Publication number: 20120118218
    Abstract: Designs and techniques for fluid thrusters and vehicles that are powered by propelling fluids with fluid thrusters. Multiplex-thruster (MT) systems are disclosed that include a single thruster and a flow multiplexer with multiple channels to deliver thrusting flow in various directions.
    Type: Application
    Filed: December 23, 2011
    Publication date: May 17, 2012
    Applicant: UNIVERSITY OF SOUTHERN CALIFORNIA
    Inventor: Wei-Min Shen
  • Patent number: 8126602
    Abstract: A system for controlling a marine vessel having first and second waterjets, corresponding first and second steering nozzles and corresponding first and second reversing buckets. The system comprises a speed control device for providing a first vessel control signal that corresponds to a speed to be provided to the marine vessel, a processor configured to receive the first vessel control signal and that is configured to provide at least one first actuator control signal coupled to the first and second waterjets, and at least one second actuator control signal coupled to the first and second steering nozzles and the first and second reversing buckets. The system any of improves upon turns provided by conventional waterjet propulsion systems, improves upon slowing down or stopping marine vessels as is done by conventional waterjet propulsion systems, and improves upon the controllability of the waterjet propulsed marine vessel at low vessel speeds.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: February 28, 2012
    Inventor: Robert A. Morvillo
  • Patent number: 8082870
    Abstract: Designs and techniques for fluid thrusters and vehicles that are powered by propelling fluids with fluid thrusters. Multiplex-thruster (MT) systems are disclosed that include a single thruster and a flow multiplexer with multiple channels to deliver thrusting flow in various directions.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: December 27, 2011
    Assignee: University of Southern California
    Inventor: Wei-Min Shen
  • Patent number: 8075355
    Abstract: A marine jet propulsion system has a jet pump, a venturi connected to the jet pump, and a steering nozzle rotationally mounted relative to the venturi about a first axis. The steering nozzle has a central longitudinal axis. The first axis intersects the central longitudinal axis. A first link has a first end rotationally mounted relative to the venturi about a second axis. The first link has a second end disposed generally rearwardly from the first end of the first link. A second link has a first end rotationally mounted to the first link about a third axis and a second end rotationally mounted to the steering nozzle about a fourth axis. The third axis intersects the second end of the first link. A steering arm is connected to the first link. The axes are generally parallel to each other. A watercraft having the jet propulsion system is also disclosed.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: December 13, 2011
    Assignee: Bombardier Recreational Products Inc.
    Inventors: Francois Giroux, Richard Simard, Andre Denis, Marc Schuler
  • Patent number: 8069802
    Abstract: One embodiment of the invention comprises a method for controlling a marine vessel having a first steerable propulsor, a corresponding first reversing device, a second steerable propulsor and a corresponding second reversing device. The method comprises receiving a first vessel control signal corresponding to a rotational movement and no translational movement command, generating at least a first actuator control signal and a second actuator control signal in response to the first vessel control signal, coupling the first actuator control signal to and controlling the first steerable propulsor and the second steerable propulsor, and coupling the second actuator control signal to and controlling the first reversing device and the second reversing device. The method creates rotational forces on the marine vessel with substantially no translational forces on the marine vessel.
    Type: Grant
    Filed: October 5, 2009
    Date of Patent: December 6, 2011
    Inventor: Robert A. Morvillo
  • Patent number: 8070538
    Abstract: 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 are an attack angle ? of the fairing vane and the front end attack angle ? which is larger than the attack angle ?. Thereby, the attack angle of the fairing vane is adapted to the water jet flow so that reduction of pump efficiency is suppressed.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: December 6, 2011
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventor: Kunihiko Kamio
  • Patent number: 8066538
    Abstract: 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, regulated by a balance detecting device, wherein water from the second impeller can provide balance to the jet boat.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: November 29, 2011
    Inventor: Krzysztof A. Kostrzewski
  • Publication number: 20110275257
    Abstract: One embodiment of a boat or watercraft that is fitted with a jet drive system powered by a 4-cycle engine and positioned in such a way that will enable the boat to be propelled and maneuvered in extremely shallow water and launched for use by a minimum of one person.
    Type: Application
    Filed: May 4, 2010
    Publication date: November 10, 2011
    Inventors: Gary Allen Jarnot, Shawn Everett Kroll
  • Publication number: 20110275254
    Abstract: A waterjet based propulsion system and method that utilizes more than one waterjet outlet port and controls the selective application of power to the waterjets with a splitter gearbox thereby improving the efficiency of the marine craft at low and high speeds.
    Type: Application
    Filed: July 8, 2011
    Publication date: November 10, 2011
    Applicant: Twin Disc, Inc.
    Inventor: Philip Rolla
  • Publication number: 20110223815
    Abstract: A marine vessel includes a hull and a jet propulsion device arranged to take in water through an intake port and eject the water through an ejection port rearward with respect to the hull. The ejection port is arranged posterior to the intake port. The marine vessel also includes a reversing member arranged to be movable between a forward drive position and a reverse drive position. The reversing member is arranged to, when placed at the reverse drive position, reverse the direction of the water ejected from the jet propulsion device forward with respect to the hull (in a direction capable of generating a propulsive force in the reverse drive direction). The marine vessel further includes an operation unit arranged to be operated by a marine vessel maneuvering operator to locate the reversing member at the forward drive position or the reverse drive position, and an internal combustion engine arranged to drive the jet propulsion device.
    Type: Application
    Filed: September 20, 2010
    Publication date: September 15, 2011
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Yoshimasa KINOSHITA
  • Patent number: 7892053
    Abstract: 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 nozzle of the watercraft and the orientation of the reverse gate, as a function of the movement of the actuator. Control electronics evaluate the target steering for the trim angle and gate orientation and control the movement of the actuator accordingly.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: February 22, 2011
    Assignee: Teleflex Megatech Inc.
    Inventors: Luc St-Pierre, Pierre Gaudet, Christian Laing, Alexandre Leclerc, Louise Mailloux-Leclerc, legal representative
  • Patent number: 7874883
    Abstract: 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 the watercraft, first and second cables, and a steering module interconnected by the cables to the control lever and connected to the nozzle, supported to pivot laterally about a second control axis and to pivot the nozzle laterally in response to pivoting of the control lever about the first control axis.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: January 25, 2011
    Assignee: Surfango, Inc.
    Inventor: Yuting Rui
  • Publication number: 20100330854
    Abstract: A jet propulsion device and method for controlling movement of the jet propulsion device, where liquid inlets are positioned at a distance from the surface of the device. Preferably, the inlets are positioned in the stabilizing fins of the device. When the device reaches a certain speed, a Riabouchinsky cavity forms around the device, and the radius of the Riabouchinsky cavity is substantially equal to the distance between the inlets and the longitudinal axis of the device.
    Type: Application
    Filed: May 27, 2009
    Publication date: December 30, 2010
    Applicant: INNERSPACE CORPORATION
    Inventor: Calvin A. GONGWER
  • Patent number: 7785162
    Abstract: A system and related methods for manned and/or unmanned marine transportation involving equipping a vessel capable with a linear pump for propelling the vessel through or substantially over a body of water.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: August 31, 2010
    Inventors: Anthony C. Ross, Russel Ross
  • Patent number: 7775844
    Abstract: An electronically assisted reverse gate system for a jet propulsion watercraft is provided. Control electronics are in communication with the operator interface of the watercraft to obtain commands from the operator, such as a selection between a forward, reverse or neutral mode, a braking command or a slow mode. The control electronics evaluates the target setting for these commands. This evaluation is made taking into consideration the operating conditions of the watercraft. Control signals are sent to an appropriate actuating device to adjust the gate orientation accordingly.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: August 17, 2010
    Assignee: Teleflex Megatech, Inc.
    Inventors: Luc St-Pierre, Pierre Gaudet, Christian Laing, François Bérubé
  • Patent number: 7753746
    Abstract: A marine jet propulsion system has a jet pump, a venturi connected to the jet pump, a first steering nozzle rotationally mounted relative to the venturi about a first steering axis, and a second steering nozzle rotationally mounted relative to the first steering nozzle about a second steering axis. The second steering axis is disposed rearwardly of the first steering axis. Rotation of the first steering nozzle relative to the venturi about the first steering axis in a steering direction causes the second steering axis to rotate about the first steering axis in the steering direction and the second steering nozzle to rotate relative to the first steering nozzle about the second steering axis in the steering direction. A watercraft having the jet propulsion system and a nozzle assembly for a marine jet propulsion system are also disclosed.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: July 13, 2010
    Assignee: Bombardier Recreational Products Inc.
    Inventor: Gilles Pesant
  • Patent number: 7708609
    Abstract: A method of controlling a watercraft comprises actuating a lever, controlling a speed of rotation of an engine to be at or below a reverse gate actuation speed in response to the actuation of the lever, moving the reverse gate in response to the actuation of the lever without further driver intervention once the speed of rotation of the engine is at or below the reverse gate actuation speed, and controlling the speed of rotation of the engine in order to decelerate the watercraft in response to the actuation of the lever and the reverse gate moving without further driver intervention. A watercraft and a method of controlling the watercraft based at least in part on an angle of a helm assembly are also disclosed.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: May 4, 2010
    Assignee: Bombardier Recreational Products Inc.
    Inventors: Renald Plante, Andre Denis, Dominic Dagenais
  • Publication number: 20100070119
    Abstract: A method for controlling a marine vessel having first and second steering nozzles and first and second trim deflectors comprises generating at least a first set of actuator control signals and a second set of actuator control signals. The first set of actuator control signals is coupled to and controls the first and second steering nozzles, and the second set of actuator control signals is coupled to and controls the first and second trim deflectors. The acts of generating and coupling the first set of actuator control signals and the second set of actuator control signals result in inducing any of a net yawing force, a net rolling force, and a net trimming force to the marine vessel without inducing any other substantial forces to the marine vessel by controlling the first and second steering nozzles and the first and second trim deflectors. Also disclosed is a system for controlling a marine vessel.
    Type: Application
    Filed: November 24, 2009
    Publication date: March 18, 2010
    Inventor: Robert A. Morvillo