61results about How to "Sufficient buoyancy" patented technology

An offshore wind turbine generator comprises an elongated, buoyant tower, having an internal service tube, the service tube extending from the lower end of the tower to above the waterline when in use, a connection arrangement comprising an upper connection assembly, and a lower connection assembly. An intermediate tension / torsion leg is arranged between the upper and lower connection assemblies. The connection assembly is adapted for lowering and raising within the service tube.

The floating drive-on docking system for a watercraft uses a main floatation portion where the watercraft rests when loaded and a pivoting entry portion for creating a low loading angle between the watercraft and the floating drive-on docking system, resulting in only a small amount of propulsion from the watercraft being required to load onto the docking system. The pivoting entry portion has entry features, either rollers or raised bumps, that remain above the waterline when not engaged by the watercraft to keep the loading surfaces free from marine growth that can harm the hull of a watercraft. Wide side guides on the pivoting entry portion assist in positioning the craft for loading onto the docking system.

A fluid pressurization unit compresses a fluid in response to natural wave action on a body of water such as an ocean. The unit comprises a floating component and a piston assembly. The floating component has sufficient buoyancy to float on water waves and has a compression chamber with an inlet valve biased to receive a fluid at an intake pressure. The piston assembly is slidable within the compression chamber and has a piston shaft and a hollow piston head attached to the piston shaft, which defines a piston reservoir therein with an inlet valve in communication with the compression chamber and biased to receive the fluid at an output pressure, and an outlet for discharging fluid pressurized to at least the output pressure from the pressurization unit. The piston assembly is fixable in place relative to the floating component such that relative movement between the floating component and piston assembly compresses fluid from the intake pressure to at least the output pressure.

A pontoon boat lift features tanks adjacent opposite sides thereof with upper walls slopes upwardly in a laterally outward direction. In lowered positions of the tanks, top ends of the sloped walls remain above water for visual and physical guidance of the pontoon boat into a position placing pontoons thereof between the outwardly sloped walls and over submerged portions of the lowered tanks, thereby allowing subsequent seating of the pontoons on said sloped walls during raising of the air tanks to lift the pontoons from the water. Buoyancy control for raising and lowering of the tank is effected by controlling air and water content thereof. The tanks are arranged to trap sufficient air therein to keep the lift buoyant to prevent sinking without using legs to support the boat lift on the sea, lake or river bed. The lift is adjustable in width and length for boats of varying size.

A bumper apparatus includes a roller rack and rack fasteners for mounting the roller rack vertically along a dock structure; a bumper assembly having a buoyant structure having sufficient buoyancy to cause the bumper assembly to rise and fall with the water surface and thus with the tide and with any adjacent water vessel; and a rack engaging structure slidably interconnecting the roller rack and the bumper assembly so that the bumper assembly is slidable vertically relative to the roller rack. The roller rack preferably includes a spaced apart upright pair of opposing first and second mounting rails; and a longitudinal series of substantially horizontal cylindrical rollers mounted on individual roller axles extending between and connected to the first and second mounting rails so that the rollers protrude forwardly from the mounting rails.

A fluid pressurization unit compresses a fluid in response to natural wave action on a body of water such as an ocean. The unit comprises a floating component and a piston assembly. The floating component has sufficient buoyancy to float on water waves and has a compression chamber with an inlet valve biased to receive a fluid at an intake pressure. The piston assembly is slidable within the compression chamber and has a piston shaft and a hollow piston head attached to the piston shaft, which defines a piston reservoir therein with an inlet valve in communication with the compression chamber and biased to receive the fluid at an output pressure, and an outlet for discharging fluid pressurized to at least the output pressure from the pressurization unit. The piston assembly is fixable in place relative to the floating component such that relative movement between the floating component and piston assembly compresses fluid from the intake pressure to at least the output pressure.

A wave energy harnessing converter (1) has a tube (3) which floats on the sea. A water inlet (2) delivers water to the tube, and an air inlet (2) delivers air to the tube (3). The tube has sufficient buoyancy and flexibility to float on the water and conform to the shape of waves when the tube extends substantially in the direction of travel of the waves, causing water in the tube to be conveyed from the inlet and to be pressurised and the air to be compressed in a series of moving air pockets. The tube is reinforced to minimise energy losses through distortion or elongation. A converter output section (10) for receiving water and compressed air from the tube (3) for providing energy.

An offshore lifting construction is able to control buoyancy for the lifting of jackets for offshore platforms. The lifting construction is designed such that it can be ballasted for raising and lowering and such that it can take several positions. The lifting construction is designed as an arm equipped with a joint for attachment to a vessel. The arm includes two substantially parallel longitudinal elements with intermediate supporting elements. One of the ends of the arm includes at least two tubular branches substantially perpendicular to the longitudinal direction of the substantially parallel longitudinal elements. At least one of the elements of the arm includes at least one ballastable tank. The arm is equipped with device for attachment to the jacket that is to be lifted. A method for rising jackets or jacket legs for offshore platforms is also described.

The present invention is directed to a swimming pool cover assembly useful to facilitate the installation of a cover having the tendency to sink when placed on the surface of the pool. The cover assembly comprises a plastic sheet and a flotation device. The sheet has a size and configuration generally adapted to cover the water surface of the pool, a top side, and a bottom side provided with one or more fasteners. The flotation device has one or more complimentary fasteners to permit assembly to and disassembly from the bottom side of the sheet. The floatation device also has sufficient buoyancy to maintain the sheet at or near the water surface when the sheet and attached floatation device are placed on the water during installation of the cover over the pool.

A fluid storage tank including an entrained air removal mechanism is provided. The entrained air removal mechanism assists in consolidating small air bubbles entrained within the fluid into larger bubbles such that the air bubbles have sufficient buoyancy to escape the fluid flow. The entrained air removal mechanism may be in the form of a plurality of saw toothed slots communicating different chambers within the fluid storage tank. The fluid storage tank can also be configured to direct fluid flow towards the sidewalls of the fluid storage tank as the fluid transitions from one chamber to another to promote heat transfer out of the fluid storage tank and to avoid the fluid within the tank acting as a thermal insulator.

The present invention relates to an arrangement in a portable device, in particular a mobile telephone powered by batteries, and for the purpose of keeping the mobile telephone floating if it falls into water, it is according to the present invention suggested that the phone comprises a detachably affixed battery pack comprising buoyancy means, for example, a waterproof space or cavity giving buoyancy when the phone with battery housing is in water.

An inflatable hot tub kit that includes a self-supporting tub structure that can be used on ground or used in a body of water. The kit includes a thermostat and hoses designed to connect to an external fresh water supply system. The tub structure comprises three inflatable ring sections that form the sidewalls designed to hold warm or hot water. The upper ring section is octagonal-shaped when viewed in a plan view. In cross-section, the upper ring section is circular and relatively large so that when the tub structure is placed in a body of water, the water edge is approximately 8 to 10 inches below the top surface of the upper section. The middle ring section is flat in cross-section and vertically aligned under the center axis of the upper ring section. The middle ring section provides buoyancy and supports the upper ring section when used on the ground or extends into the body of water to provide buoyancy. Attached to the middle ring section is an inflatable lower ring section. Attached to the lower ring section is a flat, insulated, flexible floor panel. Suitable air inlet / outlet port and a tub-through drain are also provided.

The invention belongs to the technical field of offshore wind power foundations and discloses an offshore wind power floating foundation capable of being floatingly transported and a construction method thereof. The offshore wind power floating foundation is composed of a floating platform and a mooring system. The floating platform comprises an upright, a floating box and oblique stay bars. The mooring system comprises oblique mooring lines, straight mooring lines and an anchoring foundation. In the construction process, the floating platform provided with an upper draught fan tower tube andthe mooring system are towed, and the anchoring foundation sinks to and is embedded in the seabed; and the upper ends of the oblique mooring lines extend into a first reserved hole way, the upper endsof the straight mooring lines penetrate through second reserved hole ways and the oblique star bars, and the oblique mooring lines and the straight mooring lines are anchored after the floating platform sinks in position. In the towing process, sufficient floating stability can be provided, and the influence of wave loads is small in the in-position state; an overwater layered tensioning system is achieved, and the underwater mooring line installation difficulty is reduced; and the anchoring foundation provides pulling resistance through ballast and friction resistance and is installed in theseabed through the heaped load and the inner and outer pressure difference, and construction is convenient.

A kit for conversion of a snowmobile for use as a personal watercraft by replacement of the skis with steerable flotation ‘device’ and addition of outrigger flotation ‘device’ to suspend the track in the water while providing flotation to the chassis, along with the flotation provided by the steerable flotation ‘device’. The kit installs to the snowmobile without removing the track or engine drive, and without interference with operator control systems. Wheels may be included in keels of some hulls to allow for ease of access and egress from water to land.

The invention relates to a diving system for several persons in which, without using any type of motors and being self-contained, the cylinder used is attached to a mobile float which is pulled along by the users by means of air-carrying hoses of an adjustable size, which are floating and flexible and fitted with rotary terminals, the components thereof including an automatic underwater alarm actuated by the compressed air from the actual cylinder and having a quick-release pin which releases the belt from the user without interrupting the flow of air.

The invention relates to an adjustable ski pole basket that can adjust the basket area from a position useful in low-buoyancy-need conditions, such as packed powder, to a position useful in high-buoyancy-need conditions, such as powder. The basket has a fixed based and a movable petal. The petal moves from a compact position useful in low-buoyancy-need conditions to an expanded position useful in high-buoyancy-need conditions, and back. In certain embodiments, the petal is biased toward the expanded position.

The disclosure teaches a polyrurea coated water storage floatation cover comprising a layer of buoyant closed cell foam coated with polyurea, a upper layer of polyurea coated textile attached to the buoyant closed cell foam coated with polyurea, and attachment components affixed to the upper layer of the polyurea coated textile. The cover can be rolled up for storage and transportation. The cover can be reused. The cover can be made in sections that can be attached together to cover a large area of water surface such as in a retention pond or open top tank.

The invention belongs to the technical field of offshore wind power foundation, and discloses a novel offshore wind power submersible floating foundation and a construction method thereof. The foundation consists of a floating platform and a mooring system. The floating platform comprises a standing column, a floating box and an inclined supporting rod. The mooring system comprises a straight mooring line, an inclined mooring line and a plurality of anchoring units connected through beam elements. During construction, the floating platform and the mooring system with upper draught fan tower barrels are towed separately, and the anchoring units sink and are embedded in the seabed; the upper ends of the straight mooring line and the inclined mooring line pass through reserved hole channels and the inclined supporting rod, and anchoring is conducted on the inclined mooring line and the straight mooring line after the floating platform sinks to the position. The foundation provides enoughbuoyancy stability when towing is conducted, is less affected by wave load when in position, achieves a water tension system, and reduces the difficulty of installing mooring line under water, anchoring foundation provides anti-pulling force through ballast load and friction resistance, the foundation penetrates the seabed through surcharge and internal and external pressure difference, and construction is convenient.

The present invention provides a large transport ship in which the shape of a ship bottom 1a from a bow 1h to a stern 1t, when viewed on a cross-section perpendicular to the longitudinal direction of the ship bottom 1a, is tapered towards the center CL of the ship bottom in the widthwise direction. Consequently, it is possible to resolve problems associated with changes in the draft corresponding to the state of the load, without using ballast water.

A swimming aid with a lower back float and an abdominal float, where the floats provide sufficient buoyancy to keep the user's head, neck and shoulders above water when the user is in a vertical position and in a mostly horizontal position. The floats overlap axially so that the user is biased to a vertical position, but can easily rotate between a mostly horizontal position for learning how to swim, and a vertical position, with head, neck and shoulders above the water in both positions, for ease and comfort of breathing, without falling over backwards or sideways.

A live bait container having at least one air chamber to provide buoyancy. It floats upright when stationary, and it floats on its back side when trolling. There is a strategically placed opening through the back or side wall of the air chamber to selectively allow air or water to enter and be trapped within the chamber. During fishing, air will remain trapped inside of the air chamber; however, when the user wants to store the container below the surface, air can be allowed to escape through the opening in the chamber by simply pushing the container below the water surface with its back side up. Air will escape the chamber to allow the container to submerge. To regain buoyancy, the user removes the container from the water and places it in a generally upright position, and the water will run out as air enters through the air chamber opening.

The invention belongs to the technical field of offshore wind power foundations, and discloses an offshore wind power floating foundation floating transportation construction method. The method comprises the steps of firstly, pre-manufacturing a floating platform and a mooring system on land, and performing temporary fixation through an inclined mooring line and a straight mooring line; then, performing floating transportation towing on the whole of mooring system-floating platform-tower tube-fan; then, applying ballast so that an anchor foundation can sink and is embedded into the seabed to be fixed; enabling the floating platform with the upper fan tower tube to sink to the design draught position, and anchoring the inclined mooring line and the linear mooring line; draining water in some compartments inside a floating box; finally, adjusting the weight center position of the offshore wind power floating foundation. During towing, enough floating stability can be provided, the influence of wave loads is small during the in-situ state, overwater layering stretching system is obtained, and the difficulty for installing the mooring lines underwater is lowered; the anchoring foundation provides anti-pulling force by means of the ballast weight and friction resistance and is injected into the sea bed through piled loads and the internal and external pressure difference, and construction is convenient.