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| Number | Title | Issue Date |
| 8171872 | Interactive submergible tow craft An Interactive Submergible Tow Craft pulled by a powered vessel such as water skies and tubes for tubing. A user seated in the craft has control over a pair of rudders which rotate either upward or downward causing the craft to submerge in water or breach the craft ... | 05/08/2012 |
| 8136469 | Diver tow and underwater breathing apparatus A floating apparatus operable for towing at least one diver and providing compressed air thereto for underwater breathing includes a water impermeable and buoyant hollow housing that floats on a surface of a body of water. A power source is mounted on the housing an... | 03/20/2012 |
| 8056493 | Underwater vehicle for spearfishing The present invention provides an underwater vehicle for spearfishing, comprises a carrier unit, at least one actuator unit connected to the carrier unit and having a motor and a propeller driven by the motor to rotate, at least one image acquiring unit connected to... | 11/15/2011 |
| 8033234 | Diver propulsion system with separate battery and motor-transmission modules A diver propulsion system includes separate operatively associated battery, motor, transmission, and clutch modules and a separable bracket plate and bracket base that facilitates both storage of a propulsion unit and mounting the propulsion unit on the tank of a sc... | 10/11/2011 |
| 8011314 | Personal dive device with electronic speed control A personal dive device includes a body having a power source that is disposed in the body with a voltage of the power source being greater than or equal to about 37 volts. A controller is in electrical communication with the power source. A rotary device is in selec... | 09/06/2011 |
| 7992510 | Personal watercraft A personal watercraft is provided that is capable of achieving high speeds. The craft can operate on a surface of a body of water or beneath the surface of the body of water. The personal watercraft includes a hull, a streamlined water tunnel disposed within the hul... | 08/09/2011 |
| 7699017 | Personal undersea observation pedal craft A personal water craft propelled on the water's surface by the user pedaling a pedal crank that in turn rotates a propeller thrusting the craft in a forward or rearward direction. Steering is accomplished by an operator-controlled rudder at the aft of the craft. The... | 04/20/2010 |
| 7654215 | Diver propulsion system with separate battery and motor-transmission modules A diver propulsion system includes separate operatively associated battery, motor, transmission, and clutch modules. ... | 02/02/2010 |
| 7584711 | Towable underwater craft A towable underwater craft includes a main body contoured to support the rider in the prone position, a contoured leading edge, left and right arm guards, left and right independently actuated hydrofoils and a tow rope. The majority of the craft is constructed from ... | 09/08/2009 |
| 7527011 | Propellerless scuba propulsion vehicle powered by compound piston motor joined to opposing water thrusters provides diver air without limiting dive time Scuba tank compressed air can now power a dual piston compound motor driving dual water thrusters of a steady pulling underwater propulsion vehicle. Motor exhaust provides diver breathing air through a demand regulator. Motor efficiency allows continual, powerful di... | 05/05/2009 |
| 7448340 | Diving device The diving device is comprised of a hollow hull with a side profile which is rounded at the front and tapered at the back for low resistance in water. The hull includes side wings on opposite sides of a bulbous body. Handles are arranged in the wings. The buoyancy o... | 11/11/2008 |
| 7365507 | Power control apparatus for motor A power control apparatus for a motor is disclosed. The power control apparatus includes: a moisture sensor for detecting moisture soaking into a housing including the motor; and a switching unit which is switched by an output signal of the moisture sensor, and swit... | 04/29/2008 |
| 7353767 | Underwater recreation apparatus and method therefor An underwater recreation apparatus and method therefor. The apparatus allows a diver to explore varying water depths with a minimal amount of equipment and with manageable equipment. The apparatus also allows the diver to cover substantial distances with minimal phy... | 04/08/2008 |
| 7352073 | Ocean wave energy converter having an improved generator and ballast control The ocean wave energy converter uniquely includes a generator with a rotating inner rotor surrounded by a counter-rotating outer rotor for generating electricity. A reciprocating drive rod drives the inner rotor on the downstroke of the drive rod and the outer rotor... | 04/01/2008 |
| 7347158 | Safety system for scuba divers operating underwater propulsion devices A safety system for underwater propulsion devices operated by scuba divers includes sensors that detect the vertical velocity of the device. If the descent or ascent is greater than 60 feet per minute, the system reduces the vertical speed by changing the pitch of t... | 03/25/2008 |
| 7339298 | Compliant motor driven variable electrical device A motor driven electrical device includes: a variable electrical device having a rotational variable control; a first support plate positioned above the variable electrical device; a motor support plate pliably attached to the first support plate using a pliable sep... | 03/04/2008 |
| 7331833 | Personal propulsion device with hands free control An improved personal propulsion device that generally imparts thrust directly to the user. The device allows hands free control of thrust magnitude and direction so both hands can grasp and control bicycle handlebars and brakes, watercraft paddles, ski poles, etc. T... | 02/19/2008 |
| 7328669 | Buoyancy-based, underwater propulsion system and method An apparatus for underwater propulsion. The apparatus may include a hydrofoil, a buoyancy compensator connected to the hydrofoil, a tank containing air, and a controller regulating the passage of air from the tank into the buoyancy compensator. The controller may al... | 02/12/2008 |
| 7329160 | Motorized watercraft A motorized watercraft with a hull of the craft on which a user lies prone, at least partially, or stands up, with a flow channel extending in the hull of the craft with an electric motor-driven water screw. The electric motor and the batteries, as well as the contr... | 02/12/2008 |
| 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 |
| 7300323 | Linear actuator for flapping hydrofoil A linear actuator is provided that converts linear motion to oscillatory motion. The linear actuator includes flats, a hinge, and linear actuators. A hydrofoil is mountable on a spindle attached to the hinge. In operation, a linear push direction by the linear actua... | 11/27/2007 |
| 7290496 | Unmanned autonomous submarine An unmanned autonomous submarine which can float, dive and move in water to perform various tasks. The submarine includes a pressurized cabin which is necessary for the diving and flotation system to work properly. This also helps to increase its sealing power again... | 11/06/2007 |
| 7281484 | Multimission transonic hull and hydrofield A transonic hull having a bow, a stern, a longitudinal length therebetween, side surfaces extending from the bow to outboard portions of the stern, a lower surface extending between the side surfaces, the transonic hull having a submerged volume with an approximatel... | 10/16/2007 |
| 7278422 | Open-circuit self-contained underwater breathing apparatus A self-contained open-circuit breathing apparatus for use within a body of water naturally containing dissolved air. The apparatus is adapted to provide breathable air to a diver. The apparatus comprises an inlet means for extracting a quantity of water from the bod... | 10/09/2007 |
| 7270074 | Diver propulsion system with separate battery and motor-transmission modules A diver propulsion system includes separate battery and motor-transmission modules. ... | 09/18/2007 |
| 7258301 | Personal propulsion device The present invention provides a personal propulsion device including a body unit having a center of gravity, where the body unit includes a thrust assembly providing a main conduit in fluid communication with at least two thrust nozzles, with the thrust nozzles bei... | 08/21/2007 |
| 7258509 | Diving apparatus A diving apparatus includes a pump that is actuated by muscular force. Diving weights are fastened to a fresh-air tank by surface zip fasteners. A traction element lies between the pump and the diver's limbs and to which it is attached a quick-release device. A floa... | 08/21/2007 |
| 7255054 | Cache boat A submersible surface-planing vessel has the capability to operate with a lowered profile on surface propulsion to lessen the visibility of the vessel, and sink to the bottom for temporary storage, followed by resurfacing and dewatering to operate as a planing craft... | 08/14/2007 |
| 7226329 | Powered surfboard A motorized surfboard with substantially flat and smooth top and bottom surfaces, a maximum thickness of three inches or less and no protruding parts other than fins extending from a rear, bottom portion of the surfboard. The motorized surfboard is configured to per... | 06/05/2007 |
| 7223143 | Inflatable, self-propelled life vest Self-propelled life vest for assisting a swimmer in water includes an inflatable body, the body being configured for being worn on a torso of a swimmer. An upper connector is provided and configured for connecting the body to an upper portion of a swimmer, in use. A... | 05/29/2007 |
| 7207282 | Propeller driven surfing device A propeller driven surfing device includes an elongated body defining an accommodation chamber for receiving a drive motor and a power supply therein. A propeller is driven by the drive motor, and is disposed outwardly and rearwardly of the elongated body. A shell m... | 04/24/2007 |
| 7198528 | Motor unit for a ship An arrangement of a ship's propulsion unit includes a motor unit with a motor housing arranged in the water. A motor and related controls are provided in the motor housing. A propeller is arranged at an end of a motor shaft. The motor unit includes an electrical mot... | 04/03/2007 |
| 7198186 | Support frame for a respiratory air container A support frame for a respiratory air container that can be adjusted to the torso length of a user. The support frame has a support plate with shoulder straps and to which at least one respiratory air container is fastened and from which pneumatic and electric suppl... | 04/03/2007 |
| 7159528 | Snorkel apparatus and methods of use Disclosed is an apparatus and methods for a plurality of users to work and/or play underwater with a supply of breathable air. The breathable air is taken from the atmosphere above the surface of the water. The air is sent to one or two submerged users. The apparatu... | 01/09/2007 |
| 7156036 | Launch and recovery system The launch and recovery system provides a dive wing and drogue assembly that is towed behind a ship by cables. The dive wing imparts a downward thrust to the drogue, so that the drogue is towed underwater, placing tension on the cables. The cables become stiff due t... | 01/02/2007 |
| 7152548 | Boat with dive elevator A boat comprises an elevator and a boat hull having a deck and defining a dive opening. The dive opening extends vertically from the deck to the water and defines an enclosed passageway having upper and lower openings. Depending on the dive opening's location in the... | 12/26/2006 |
| 7144282 | Contoured rudder maneuvering of waterjet propelled sea craft The stern hull portion of a surface ship or underwater sea craft is provided with a waterjet propulsion unit having an outlet end from which a discharge propelling waterjet emerges underwater and undergoes flow beyond the stern end of the hull between a pair of twin... | 12/05/2006 |
| 7124701 | Propulsion system for scuba diver Electric Propulsion system supported by a special usable harness slinging from scuba divers, deep-sea divers or simple swimmers, advantageously fed by a sophisticated system of rechargeable batteries, inserted inside several united watertight containers between them... | 10/24/2006 |
| 7104729 | Buoyancy compensator jacket for scuba divers with improved weight pockets A buoyancy compensator jacket for a scuba diver is disclosed. The jacket comprises a back portion having two opposite sides. Side portions extending from the opposite sides are provided for laterally enveloping the diver's trunk and for connecting to one another gen... | 09/12/2006 |
| 7096815 | Underwater scooter An underwater scooter including a main frame on which are disposed two air tanks serving as a saddle area for the operator, a depth adjusting mechanism disposed to the fore of the air tanks, and a steering mechanism disposed to the aft of the air tanks. The depth ad... | 08/29/2006 |
