Abstract: A flange for a pressure vessel includes a rim, a sealing seat, and an undercut fillet. The rim has an annular surface for abutting an annular end of a cylindrical wall of the pressure vessel. The sealing seat has a cylindrical surface for abutting an inner surface of the cylindrical wall of the pressure vessel nearby the annular end. The undercut fillet is disposed between the rim and the sealing seat. A concave surface of the undercut fillet extends the annular surface of the rim radially inward and then curves back outward to intersect the cylindrical surface of the sealing seat. The undercut fillet of the flange helps distribute stress produced from a pressure differential between the inside and outside of the pressure vessel.

Abstract: A remotely controlled, self-propelled floating cooler includes a main body member that generally has an ovoid shape, as shown, for streamlined movement through the water. The main body member is generally hollow, which allows for ice, drinks, food, and the like to be placed inside of the main body member through an opening or hatch on top. A lid may be removably secured to the opening on top, and preferably includes securing means for maintaining the lid in a closed position, even in rough water. Remotely controlled propulsion means are attached to an underside of the cooler on one end thereof. Other features include an audio receiver with speakers, port and starboard running lights, GPS navigation, submerged spotlights, and video cameras mounted above and below the waterline, all of which may be operated via a remote control device.

Abstract: A method of assembling a floatation device and a floatation device is disclosed. The method can include providing a casing having an upper fabric layer and a lower porous layer. A plurality of dividers can be connected at a first end to the upper fabric layer and at a second end to the lower porous layer. Edges of the upper fabric layer and the lower fabric layer can be connected by a zipper. The upper fabric layer and the lower fabric layer can define a chamber therebetween, and the plurality of dividers dividing the chamber into a plurality of sleeves. A plurality of foam floatation members can be installed in a respective sleeve of the plurality of sleeves, and the zipper can be closed to form a floatatable platform.

Abstract: A counter-underwater vehicle apparatus and marker. Moreover, a counter-underwater vehicle apparatus comprising a plurality of entanglement lines; a box configured to contain the plurality of entanglement lines; a suction cup coupled to the box configured to attach the box to a surface of an underwater vehicle; a release mechanism coupled to the box configured to detach the box from a bite plate and release the plurality of entanglement lines; and the bite plate selectively coupled to the release mechanism. Additionally a marker configured to highlight the location of an underwater vehicle, a box configured to contain and release the marker, a suction cup coupled to the box configured to attach to the box a surface of an underwater vehicle, a release mechanism coupled to the box configured to detach the box from a bite plate and release the marker, and the bite plate selectively coupled to the release mechanism.

Abstract: A modular underwater vehicle includes a hull having a series of modular sections, defining an interior housing, a propulsor coupled to a stern of the hull, a series of control surfaces coupled to the propulsor or the stern of the hull, and a power supply, a processor, and a nonvolatile memory device in the interior housing. The nonvolatile memory device has instructions stored therein which, when executed by the processor, cause the processor to supply power from the power supply to drive the propulsor and to actuate the plurality of control surfaces. At least one modular section of the series of modular sections is detachable.

Abstract: A method is for making a marine drive for propelling a marine vessel in water. The method includes providing a gearcase; installing a propeller shaft assembly that extends forwardly from the gearcase; coupling front and rear propellers to the propeller shaft assembly, forwardly of the gearcase, such that rotation of the propeller shaft assembly causes rotation of the front and rear propellers, respectively, which thereby propels the marine vessel in the water; and reducing deleterious effects of cavitation on the gearcase by the combination of forming the gearcase with a wide trailing end portion, in particular to maintain pressure alongside the gearcase, and configuring the front and rear propellers so that the front propeller absorbs more torque/thrust load than the rear propeller during said rotation.

Abstract: A linking drive system comprises a first drive shaft of the first drivetrain connected between a first prime mover and a first propulsor. The linking drive system comprises a second drive shaft of the second drivetrain connected between a second prime mover and a second propulsor. The linking drive system further comprises a linking drive clutch, which comprises at least a first clutch part and a second clutch part. The first clutch part and the second clutch part are engageable with each other and can transmit rotation therebetween. At least one flexible drive link is coupled between the linking drive clutch and the first and/or second drive shafts. Rotation from one of the first and second drive shafts is transferred to the other of the first and second drive shafts when the linking drive clutch is engaged thereby linking the first and second drivetrains.

Abstract: An air deployable buoyant device for transmitting data on its location and the conditions in the air as it descends to the surface of a body of water, and on conditions on a body of water on a real-time basis is disclosed. The device includes a buoy and a plurality of sensors and a transmitter associated with the buoy. The transmitter transmits data on the location of the device and the conditions in the air and on a body of water on a real-time basis to at least one receiver. The receiver may be located over the horizon or in line of sight with the device. The sensors are in communication with the transmitter, and each sensor measures at least one condition in the air and/or on a body of water to assist in locating a person in the water and provide information on the water conditions to a rescue team. Methods of deploying and using the buoyant device are also disclosed herein.

Abstract: A cold weather infant survival suit includes a principal body cavity having infant/baby holding attachments to fit/hold their small bodies and a coverable cranial opening. The structure of the suit includes a layered structure of mechanically interconnected cavities within cavities. A composite of tear-proof and insulation material forms an internal suit or first envelope that is surrounded by a waterproof suit and then by a tear resistant suit.

Abstract: The present invention relates to a baby float. The multi-functional baby float comprises a float body and a buoyant tail for increasing the buoyancy of the back; the buoyant tail is detachably connected with the end of the float body; and the back of a head of the float body is provided with an elevating mechanism for raising the head of the float body. The elevating mechanism comprises an inflatable airbag or a connecting structure. The connecting structure comprises some rows of female buckles; the buoyant tail is provided with son buckles; and the buoyant tail is fixedly connected with the float body through the matching of the son buckles and the female buckles. The present invention has the characteristics that the back buoyancy can be increased to prevent roll-back, the buoyant tail can be detached and installed below a headrest.

Abstract: A floatation apparel system for discreetly providing buoyancy includes a garment being worn by a user while engaged in aquatic activities. The garment includes a plurality of body apertures having a portion of a person's body extending through. Each body aperture has a perimeter edge, and at least one tubular ring is attached to the garment and is co-extensive with one of the body apertures. Furthermore, at least one tubular ring is buoyant in water.

Abstract: A sandwich cable fairing designed for attachment to cables that are towed at operational speeds by marine vessels. The sandwich cable fairing has a design that combines layers of elastic and damping materials. The fairing dampens the vibration caused when the cable is towed at operational speeds. The outer layers (“bread”) of the fairing are made from a material with a modulus of elasticity that provides a desired amount of stiffness. In the middle of the sandwich cable fairing is damping layer made from a viscoelastic material. The layering of materials allows the fairing to have the flexibility to be crushed by cable equipment while maintaining the requisite stiffness to reducing flapping and the resulting vibration.

Abstract: An object of the present invention is to provide a float assembly that can prevent the floats from flipping. The present invention provides a float assembly including a plurality of floats connected together comprising: a filled float having a hollow portion, wherein the hollow portion has a part filled with a filler, and the filled float is arranged at a position facing an assembly periphery surrounding the float assembly.

Abstract: A seabased resupply system includes a fuel containment structure containing fuel and extending fore and aft along a longitudinal axis, a pump on the fuel containment structure operable to pump the fuel, containers located on an exterior of opposite lateral sides of the fuel containment structure, and an operating system located inside one or more of the containers, the operating system comprising at least one selected from a power supply, a communication system, and a control processor.

Abstract: Constraints on arrangement of catalysts are reduced, and early activation and long-term performance maintenance of the catalysts are both achieved. An exhaust pipe includes a first catalyst provided in a first exhaust pipe extending upward on the side of an exhaust manifold, and a second catalyst provided in a second exhaust pipe that extends downward from a bent pipe extending from the first exhaust pipe and that is adjacent to the first exhaust pipe. The second catalyst is disposed at a position offset to a higher location from an up-down middle position of the first exhaust pipe.

Abstract: An amphibious vehicle for traversing land and bodies of water includes a chassis, and a cycloidal propeller coupled to the chassis and which includes a plurality of cycloidal propeller blades rotatably coupled to the chassis and each extending parallel a rotational axis of the cycloidal propeller, and an extension/retraction system configured to extend the plurality of cycloidal propeller blades away from the chassis and to retract the plurality of cycloidal propeller blades towards the chassis.

Abstract: A system for propelling a paddleboard or surfboard along the surface of a body of water, comprising a controller motor coupled to a propeller, a rechargeable battery, a controller which may be wearable on the wrist of a user, and a housing structure that is adapted to be attached to the fin box of a paddleboard without the need to remove the fin. The apparatus presents a low-drag profile, has a long battery life for extended range, and is able to be controlled so that user may operate the paddleboard at any desired speed, and in a forward or rearward direction, or in a controllable direction of thrust. The housing structure is adaptable to various fin box T-bolt separation distances.

Abstract: A device for coupling a propulsor to a marine vessel. The device includes a mounting bracket configured for attachment to the marine vessel. A support frame has a carriage and is configured for the propulsor to be coupled thereto, where the carriage is configured to slidably engage with the mounting bracket into a fixed position. A member is manually engageable to prevent the carriage from sliding out of the fixed position. The propulsor is coupled to the marine vessel by sliding the carriage into the fixed position and engaging the member, where the propulsor is operable to propel the marine vessel in water when the carriage is in the fixed position, and where the propulsor is configured for decoupling from the marine vessel by disengaging the member and sliding the carriage out of engagement with the mounting bracket.

Abstract: Conventional surfboards enable a rider to catch a wave and ride towards the shoreline while utilizing the power of the ocean to enjoy the ocean waves uniquely. A low-profile motorized surfboard has been developed to assist riders who may have a disability or struggle to get into the position necessary to begin riding the waves. The surfboard may comprise at least one propeller and electromechanical motor, which may provide propulsion for the rider. The surfboard may have an internal power system and supporting circuitry for safe and reliable propulsion. The motorized surfboard may have a low-profile system that is collapsible and allows for the rider to enjoy the surf as if the surfboard were a conventional system. The system may also function to return the rider to the shoreline.

Abstract: The invention relates to a method for controlling a water jet propulsion device for the propulsion of a marine vessel, the water jet propulsion device comprising: a conduit extending between an inlet and an outlet; an impeller in the conduit; and a mechanical power provider arranged to deliver power to the impeller; the method comprising receiving a plurality of thrust commands, and controlling a thrust level of the water jet propulsion device in dependence the thrust commands, wherein controlling the thrust level comprises adjusting a position of a deflector arranged to deflect water flowing out of the outlet, characterised by coordinating the adjustment of the position of the deflector with a level of engagement of a clutch, arranged to adjust the delivery of power from the power provider to the impeller, so that the thrust level is substantially continuous in a thrust command domain.