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| Number | Title | Issue Date |
| 8132525 | Ocean thermal buoyancy and propulsion system A water navigable vessel or glider can transport cargo across oceans and other bodies of water without the use of fossil or nuclear fuels. The vessel includes a housing, a cargo or payload area within the housing, one or more control fins attached to the housing, a ... | 03/13/2012 |
| 8033235 | Water craft A water craft (10) includes a hull (12) defining two cavities (18). An inflatable chamber (22) is arranged in each cavity (18), for displacing water from hull (12), in use, to increase the buoyancy of the craft (10). ... | 10/11/2011 |
| 7352074 | System for producing hydrogen making use of a stream of water A system for producing hydrogen from water, making use of a stream of water such as a gulf stream or tidal stream, includes a number of submerged modules, each having a turbine that can be driven by the stream of water. The turbine is coupled to a generator for gene... | 04/01/2008 |
| 7311469 | Floating lowering and lifting device A floating lowering and lifting device (1) includes a floating structure (2) and a lifting unit (3) lowerable from the floating structure (2) towards the sea bed, the lifting unit (3) having a chamber (5) with at least one g... | 12/25/2007 |
| 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 |
| 7267072 | Dry cargo submarine with air-charge cargo hold Submarines with air-charged cargo holds are provided. The pressurize hull of a traditional submarine's cargo hold is replaced by non-pressurized hull, which lowers costs for transporting dry cargo and solves strength and seal problems raised when providing large ope... | 09/11/2007 |
| 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 |
| 7213532 | System and method for managing the buoyancy of an underwater vehicle The present invention provides a system and a method, including a gas supply proximate to a worksite, for repetitively recharging the ballast tank of an underwater vehicle as required to control its buoyancy while moving underwater payloads. ... | 05/08/2007 |
| 7131389 | Submersible A winged submersible having a neutral to positive buoyancy utilizes an inverted wing structure to allow the wings to create downward force on the submersible in response to forward movement. Internal pressure pods are provided to allow an occupant to maintain a recu... | 11/07/2006 |
| 7117813 | Submarine boat The submarine is equipped with a fluid gas pressure container, in particular for storing liquid oxygen. The liquid gas pressure container is arranged within the pressure hull of the submarine and is surrounded by an outer pressure container which is likewise stored ... | 10/10/2006 |
| 7076920 | Method of using a combination differential and absolute pressure transducer for controlling a load lock A pirani absolute pressure sensor for sensing absolute pressure in a load lock in a range from 100 to 10−4 torr and a differential pressure sensor for sensing a pressure difference between ambient atmospheric pressure and pressure in the load lock chamb... | 07/18/2006 |
| 7036450 | Method and device for operating an underwater vehicle A method is disclosed for operating an underwater vehicle. According to the method, the pressure difference between a container which can be filled with water and/or gas, especially air, in order to alter the weight of the vehicle and the water pressure outside the ... | 05/02/2006 |
| 7013829 | Mobile hunting vessel A semi-submersible hunting vessel is provided. A hunter can move the vessel to a designated hunting area and partially submerge the vessel to reduce the visibility of the vessel and hunter to flying game. The vessel includes a hull, at least one ballast chamber, a d... | 03/21/2006 |
| 6968799 | Safety device A safety device to prevent a passenger from becoming injured during a crash, severe weather conditions, or other event that could cause bodily harm. The safety device comprises a substantially fracture resistant spherical shell and at least one harnessed passenger s... | 11/29/2005 |
| 6789587 | Method and apparatus for underwater tree cutting and retrieval The invention relates to an apparatus and method for cutting submerged trees at an underwater logging site and for retrieving the cut trees. Once cut, each tree is retrieved to the water surface by an inflatable bag deployed from and inflated by the apparatus. The a... | 09/14/2004 |
| 6772705 | Variable buoyancy apparatus for controlling the movement of an object in water A device controlling the depth and motion of an object underwater by using a processor to accurately control the volume of gas within, and thereby the buoyancy, depth, and motion (rate of ascent and descent) of, a buoyancy chamber that is attached to the object. The... | 08/10/2004 |
| 6749370 | Buoyancy compensating jacket A buoyancy compensating jacket is provided on a waist portion with a pocket having a first flap, a pouch having a flat cord adapted to be inserted into and taken out from the pocket with a weight packed into the pouch. As a guide means for the flat cord, at least on... | 06/15/2004 |
| 6746287 | Underwater propelling apparatus which stably carries out a propelling operation and a steering operation An underwater propelling apparatus includes a body and a plurality of vibrating units. The plurality of vibrating units are placed in parallel to each other on a rear side of the body. Each of the plurality of vibrating units vibrates repeatedly and reciprocally to ... | 06/08/2004 |
| 6575105 | Device for transporting loads under water and usable as a lifting pontoon A device for the transport of loads under water which may be used also as a loading bridge, allows to reach great depths under water and comprises a tank (S), two tanks (Sg) and a float (G) in which the pressure automatically remains equal to the external... | 06/10/2003 |
| 6443087 | Underwater dive vehicle The underwater vehicle disclosed has a selectively energizable propulsion unit for forcible driving the vehicle through the water and at least one resilient gas filled buoyancy element and at least one rigid buoyancy element which is in open contact with ... | 09/03/2002 |
| 6386133 | Torpedo tube shutter-pressure release Two-way pressure release valves in a shutter reduce the force needed to rotate it from a torpedo tube while the submarine is underway at high speeds. The valves are each mounted in a separate aperture in the shutter and have a pair of biasing springs that... | 05/14/2002 |
| 6371041 | Versatile buoyancy, attitude, hover, and glide control system for undersea vehicles An undersea streamline vehicle having a unique system for gliding ascent, gliding descent, both with and without engine power, and for hovering in the sea for exploratory or research purposes by the provision in the vehicle of buoyancy chambers or bladder... | 04/16/2002 |
| 6065419 | Underwater dive vehicle The underwater dive vehicle disclosed has a selectively energizable propulsion unit for forcible driving the vehicle through the water and at least one resilient gas filled buoyancy element which is in open contact with the surrounding water when the vehi... | 05/23/2000 |
| 5865663 | Toy submarine ballast system A ballast system for toy submarines comprises a plumbing device, a flexible bag, a piece of wire and a rod. The ballast system draws water in and forces water out by decompressing and compressing the flexible bag.... | 02/02/1999 |
| 5713299 | Submersible boat Submersible boat is capable of navigating both on the water surface and submerged, the diving taking place by dynamic effect when the operator requires it, the boat having a catamaran type structure, comprising two side floats which are maintained partial... | 02/03/1998 |
| 5704309 | Hybrid boat and underwater watercraft A hybrid boat and underwater craft and method for operating an underwater craft having positive buoyancy, a three-point stabilization system and vertical thruster and a system for enhanced buoyancy at the surface.... | 01/06/1998 |
| 5452677 | Hull valve assembly A hull and backup valve assembly for a submarine includes a valve body made of the same material as the hull; thus, the valve body can be welded directly to the hull. The flow path of the valve is straight and disposed at an angle relative to the surface ... | 09/26/1995 |
| 5377613 | Submersible boat A submersible boat is provided which utilizes a planing boat hull with a sharp bow and blunt stern. The submersible boat performs as a planing boat until it nears the target location. Then, the boat submerges in order to avoid detection. After this vessel... | 01/03/1995 |
| 5235931 | Inflatable undersea vehicle system of special utility as a daughter vessel to a mother vessel The submersible vehicle system of the present invention comprises a unitary ndersea vehicle composed of a rigid hull submersible mated to an inflated auxiliary submersible. Both the rigid hull submersible and the auxiliary submersible may be initially stor... | 08/17/1993 |
| 5144905 | Diving boat A diving boat wherein an air tank, water tank and navigating apparatus are provided, air within the air tank is fed into the watertight boat body and excess air produced thereby is discharged into water outside the boat body through an automatic balance t... | 09/08/1992 |
| 5129348 | Submergible vehicle A submergible vehicle capable of untethered, fixed depth operation is provided with a rigid walled buoyancy chamber (40) adapted for accommodation of varying volumes of water and buoyancy gas. The chamber is provided with a valving system to adjust the vo... | 07/14/1992 |
| 5007364 | Gas control valves and apparatus for controlling buoyancy in water A gas control valve (802) has an inlet needle jet (812) and an outlet (816), the communication between which is controlled by a valve member (808) carried by a rod (807) connected to a diaphragm (804) which divides a chamber (806), open to ambient pressur... | 04/16/1991 |
| 4945851 | Submersible inflatable craft A water craft including an inflatable buoyancy chamber, by inflation and deflation of the buoyancy chamber the buoyancy of the craft, floating or submerged, can be regulated. The water craft includes a buoyancy control apparatus for controlling inflation ... | 08/07/1990 |
| 4938164 | Self-propelled manned submersible vehicles for under-sea excursions A self-propelled manned submersible vehicle of the type comprising a pressure-resistant capsule (1) serving as a cabin, ballast tanks (3, 8), releasable ballast (7), propulsion units (4) having propellers driven by electric motors, and storage batteries (... | 07/03/1990 |
| 4919637 | Model submarine A model submarine has an inherent "fail safe" feature, so that the submarine (if submerged) will rise to its periscope depth in the event the submarine encounters a stationary object, or in the event a power failure occurs. Power is supplied by a single s... | 04/24/1990 |
| 4898288 | Semi-submersible crane vessel A semi-submersible crane vessel has a chamber (3) which is open to the sea at the bottom. A piston (4) is movable up and down in the chamber by means of hydraulic jacks (5 and 6) acting on piston rod (7). The part (10) of the chamber above the piston cont... | 02/06/1990 |
| 4826465 | Model submarine A diving model submarine utilizes an automatic depth level control mechanism, water jet propulsion, a water powered aspirator for ballast tank evacuation, hydraulic control of steering, diving plane attitude, and ballast tank valve action. The model divin... | 05/02/1989 |
| 4823722 | Semi-submersible marine craft A semi-submersible marine craft for operation on the surface or in a semi-submerged condition has a pair of spaced parallel tubular water ballast floats disposed horizontally on either side of a vertical middle plane. The floats are disposed symmetrically... | 04/25/1989 |
| 4738212 | Body sailer A body sailer allows an operator to sail in a partially submerged position. The body sailer includes first and second buoyancy pontoon devices held in a spaced apart relationship by a frame. The frame is coupled to a third buoyancy device disposed advance... | 04/19/1988 |
| 4713896 | Inshore submersible amphibious machines A submersible unit comprises a portable, open or closed bottomed pneumatic chamber mounted on flexible drive tracks controlled by personnel from the chamber for operation along the bottom of a body of water, on the surface, at intermediate levels, in the ... | 12/22/1987 |
