Abstract: This invention relates to the field of multilayer articles prepared by rotational moulding with a robotised rotomoulding machine wherein the mould is under direct heating.

Abstract: A thickening tank has a peripheral overflow launder and a centrally disposed feed well. Feedstock slurry is fed to a mixing box which also receives supernatant liquid and is supplemented by flocculated material flowing into the interior of the feed well onto a distributor baffle plate. The supernatant liquid is delivered at a controlled rate from a receiving vessel formed by an upright cylinder provided at its lower end with an impeller of a lift pump which is operated by a controller positioned at the upper end of a vertical drive shaft extending axially through the receiving vessel. The feed well is surrounded by a second launder which is closed at its base and formed with a cup. The lower end of the receiving vessel is spaced from the floor of the cup to draw supernatant liquid exclusively from the second launder rather than from the thickener tank.

Abstract: A set of interlocking tanks. The tanks have respective sidewalls including cooperating interlock features formed inclusive of the hollows of the tanks which are mutually correlated and reciprocally shaped so that the interlock feature of one tank interlocks with respect to the interlock feature of the other tank to thereby connect the tanks together as a single subassembly. The interlocking is selectively releasable.

Abstract: A storage container for water-endangering liquids comprises a leakage detection and restraint system. The storage container provides a container that allows for a short-notice alarm system and that minimizes the collection volume, that is to ensure that the water-endangering liquid spreads as little as possible, as well as to reduce construction and maintenance costs. The storage container is characterized by the following features: a gutter (4) surrounding the tank (13) that is directly contiguous with the outer wall (2) of the storage container and that collects leaked liquid, at least one gutter outlet (14), at least one liquid collection container (6), and at least one detection system (12) for the water-endangering liquids. The gutter outlet (14) is adapted to guide the liquid collected in the gutter (4) to the liquid collection container (6) that is provided with the detection system (12).

Abstract: A device facilitating consumption of a liquid during athletic activities or the like is presented. The invention includes a closed reservoir disposed between a base plate and a rigid outer tube having a flexible inner tube therein. The base plate is flexible, bendable, or deformable in a resilient fashion so as to allow the invention to tilt with use. The flexible inner tube allows a user to drink from the closed reservoir. The rigid outer tube supports the smaller flexible inner tube and allows a user to easily grasp the invention during use. The combination of rigid outer and flexible inner tubes allows a user to drink from the present invention in an upright or nearly upright position. In some embodiments, the base plate may include a peripheral region which is upwardly disposed. The height of the peripheral region may be sufficient so as to form an open reservoir capable of holding cold or heat packs so as to thermally condition liquid within the closed reservoir.

Abstract: A storage tank containment system including a cubic-shaped tank having an outer shell having cylindrical walls for the efficient storage and transportation of large quantities of fluid, for example, liquid and compressed natural gas.

Abstract: Disclosed are a water tank and a refrigerator having the same. The water tank includes a tank main body provided with a water storage space formed therein and a discharge hole; a tank cover connected to the tank main body for opening and closing the water storage space; a valve movably installed in the tank main body for opening and closing the discharge hole; and a valve driving unit moving the valve using magnetic force so as to cause the valve to open and close the discharge hole. The water tank is opened and closed by the magnetic force of magnets and the restoring force of elastic members, and thus it is possible to prevent water stored in the water tank from leaking out in a process of attaching or detaching the water tank to or from the rear surface of a door or a refrigerator.

Abstract: A composite pressure vessel includes an endcap with first and second layers. The first layer is a thermoplastic layer and the second layer is a thermoplastic and glass fiber composite layer. A method for making the vessel includes placing commingled thermoplastic and glass fibers in a heated mold to melt the thermoplastic. The molten thermoplastic and the glass fibers are molded into the endcap shape. An outer surface of the pressure vessel is finished in accordance with another aspect of the invention. A pressurizable bladder with an inwardly facing surface is deflated. The outer surface of the vessel is heated to soften the thermoplastic. The pressure vessel is positioned in the bladder so that the inwardly facing surface of the bladder is adjacent to an outer surface of the pressure vessel. The bladder is pressurized to move the bladder inwardly into contact with the adjacent surfaces to each other.

Abstract: The present invention relates to a vessel for a compressed gaseous fuel. The vessel has a non-cylindrical shape and is provided with a bulk head within the vessel. The vessel is surrounded by a composite comprising a fibre reinforcement that is wound around the vessel. The vessel comprises a liner with a shape that is substantially the same as the desired vessel shape. The liner is provided with at least one recess that extends around the liner and divides the liner in sections connected to each other by a passage. The fibre reinforcement is continuously wound around the liner in different directions to ensure sufficient vessel strength and the recess is filled with fibres so that the fibres in the recess constitute the bulk head. The invention further relates to a method for producing the claimed vessel.

Abstract: A storage vessel for storing a fluid substance, said storage vessel including a plurality of abutting individually sealed storage chambers, each chamber capable of withstanding super atmospheric pressure, with adjacent chambers forming at least one fluid passageway therebetween, characterised in that at least one said chamber includes an external peripheral seal configured to be relatively weaker than the remainder of said vessel.

Abstract: A sewage tank for use with a pump such as a grinder pump to convey sewage. The sewage tank includes a container having an upper portion and a lower tapering portion defining a chamber for containing the pump. The lower tapering portion has a reduced size compared to the upper portion. The upper portion and the lower portion may include a plurality of intersecting vertical ribs and horizontal ribs defining a plurality of recessed pockets. The lower portion of the sewage tank may also include an outwardly-extending flange sufficiently sized so that soil may be backfilled around the bottom of the tank to prevent the tank from floating upward out of the ground due to its buoyancy under high ground water conditions. A sewage tank having a stepped flange is also disclosed.

Abstract: Non-limiting embodiments disclosed herein include components of a rain water collection system and methods of fabricating the components. The disclosed components include a down spout interface bladder and a rain water holding device. Also disclosed are a method of fabricating a down spout interface bladder and a method of fabricating a rain water holding device.

Abstract: A fluid tank (20) has at least two deaeration ports (24,25) provided in at least two upper regions of the tank. A first conduit (30) is connected at one end to one deaeration port (24) and connected at its other end to a compensating reservoir (50) at a higher level. At least one additional conduit (40) is connected at one end to an other deaeration port (25) and also connected at its other end to the compensating reservoir (50). A filter (60) is connected with the upper part of the reservoir to allow air to escape from the reservoir. The height of the compensating reservoir (50) above the tank (20) ensures that the filter (60) is protected from immersion in tank fluid and deaeration is ensured at normal working inclinations of the tank. The tank may be provided by part of the chassis of a tractor which is located below a cab of the tractor.

Abstract: A method for storing a gas. In some embodiments, the method includes positioning a gas storage system under water, the gas storage system having a gas inlet and injecting gas through the gas inlet into the gas storage system, wherein the gas is compressed. The method may further include venting the compressed gas through the at least one gas port to a storage facility.

Abstract: A fouling-resistant arrangement useful for guiding lengths of cables having functional devices including a float, counterweight, and indicator bob attached at their ends, collectively useful in indicating the liquid level of a storage tank to which a system as herein provided is attached, to a passer-by upon casual glance.

Abstract: PIR rigid foams are produced from a polyisocyanate component and a polyol component that includes at least one polyester polyol and at least one polyether polyol. The polyisocyanate and polyol components are reacted in amounts such that the volume ratio of polyisocyanate component to polyol component is from 100:100 to 100:110 and the index is from 100 to 400. These foams are characterized by good adhesion to a substrate and impermeability to water vapor. The foams are generally produced by a casting process and are particularly useful as an insulating material for containers and tanks.

Abstract: A system of water collecting, cleaning, and storing comprises a top-opened water storing container (1), with the wall of which a watertight structure; a collecting well (2) provided in the water storing container (1), which has a lid (6) and has a wall of permeable structure through which water exchange between the water storing container (1) and the collecting well (2) is achieved; filling elements (4) filled between the collecting well (2) and the water storing container (1), on top of which a pervious surface layer (5) is paved.

Abstract: A fluid tank is disclosed. The fluid tank includes at least one joint including an adhesive that is non-tacky at a first temperature, has a flow point temperature at a second temperature that is greater than the first temperature, and a cure and bond temperature at a third temperature.

Abstract: A water harvesting device comprising a plurality of longitudinal walls, at least one wall adjacent to a wall of an existing structure; the plurality of walls defining at least one water storage area with a height such that water pressure is enhanced; and the water storage area operatively engaging at least one water source.

Abstract: Structures are provided that have an enclosed interior space that can be used to hold and contain water or other matter. The interior space is defined by an enclosing wall and a base that are both waterproof to prevent leakage of the water or matter contained in the interior space. None, one or more frame members can be provided as part of the enclosing wall and the base, or a frame member can be provided as part of a rim member. The frame members can be foldable to allow the resulting structure to be twisted and folded to reduce the overall size of the structure.

Abstract: A pressure tank includes a metallic vessel, a plastic liner received in the metallic vessel, a flexible diaphragm, two metallic joints, two anti-leak assemblies and a nozzle coupled to the metallic joints respectively. The metallic vessel includes upper and lower shells. The upper shell defines a first planar area on a side thereof and a second planar area on a top thereof. The lower shell defines a third planar area therebottom. The flexible diaphragm divides said metallic vessel into a storage space and a pneumatic room. The metallic joints are mounted on the side and top of the upper shell respectively and are in communication with the storage space. The two anti-leak assemblies provide leakproof connection between the metallic joints and the plastic liner. Additionally, the nozzle is mounted on the third planar area to be in communication with the pneumatic room.

Abstract: A liquid fuel is contained in a fuel container, and the liquid fuel is discharged from a fuel outlet. Further, a water is contained in a water containing pipe provided in the fuel container, and the water is discharged from a water outlet to the outside. Air taken into the fuel container through a dustproof filter attached to a rear lid portion of the fuel container is discharged to the outside from an oxygen source outlet through an oxygen source pipe. The fuel outlet, oxygen source outlet and water outlet are provided in a front outer surface of the front lid portion.

Abstract: A tank, comprising a storage space enclosed by a substantially fluid-tight tank wall, wherein the tank wall comprises a curing material for causing transition from a first flexible state to a second substantially form-retaining stage, wherein the tank wall is provided with a preformed opening for substantially fluid-tight co-action with a preformed valve.

Abstract: A sewage tank for use with a pump such as a grinder pump to convey sewage. The sewage tank includes a container having an upper portion and a lower tapering portion defining a chamber for containing the pump. The lower tapering portion has a reduced size compared to the upper portion. The upper portion and the lower portion may include a plurality of intersecting vertical ribs and horizontal ribs defining a plurality of recessed pockets. The lower portion of the sewage tank may also include an outwardly-extending flange sufficiently sized so that soil may be backfilled around the bottom of the tank to prevent the tank from floating upward out of the ground due to its buoyancy under high ground water conditions. A sewage tank having a stepped flange is also disclosed.

Abstract: A plastic tank is rotationally molded with a cast-in steps seat for a leak-proof drainage fitting. The seat is formed during the molding process using a mandrel mounted on the mold wall. The seat provides substantially parallel surfaces to the outer wall surface of the tank so as to assure proper sealing of the fitting installed in the drain opening of the tank.

Abstract: A steel storage tank with a novel means for recovering vapors through perforations in the center column is described. Vapors trapped between the floor and the minimum elevation of a floating roof fluid storage tank are recoverable through perforations in the supporting center column. The vapors are removed through adjustable elevation vents in the center column where they are routed to a vapor recovery system.

Abstract: The invention relates to a gas filling and distribution head (2) which is intended to be disposed in a hole in a pressurised gas storage tank. The inventive head (2) includes a mounting segment (21) which is intended to be housed in the hole in the tank and an expansion segment which houses a pre-expansion device (22), said pre-expansion device (22) being arranged in relation to the mounting segment (21) such as to be housed at least partially inside the tank when the head is in the mounted position. The head (2) also includes: a filling circuit which extends between a first end which is equipped with a filling hole (6) and a second end which is intended to communicate with the interior of the tank, and an extraction circuit which extends between a first end which is intended to communicate with the interior of the tank and a second end which is equipped with an extraction hole. The invention is characterised in that the filling hole (6) is aligned with the extraction hole.

Abstract: A process of constructing a large diameter tank is provided. The process includes the step of providing a tank wall mandrel that has at least one drive wheel and at least one curved panel. Glass fibers are applied from a vertical winder to the curved panel in order to form a segment of a tank wall shell. Additional glass fibers are also applied to the curved panel at a location above the segment of the tank wall shell in order to form a unitary tank shell.

Abstract: The water tank for a refrigerator, and refrigerator having the same, is capable of reducing a material loss, being easily manufactured, withstanding a high water pressure and easily adjusting a storage capacity according to demands by changing installation conditions. The water tank for a refrigerator includes a plurality of reservoir containers each having an inlet and an outlet, and at least one connecting pipe which is bendable to connect the reservoir containers in series.

Abstract: An improved pallet and tank assembly (10) is provided, including a metal tank (12) positioned atop and secured to a flat-bottomed, synthetic resin pallet (14). Preferably, the pallet (14) includes an upper tank-supporting slotted surface (40) which receives depending couplers (28) serving to secure the tank (12) to the pallet (14) and allowing field-replacement of the pallet (14) without the need for welding or the like. The pallet (14) presents a substantially flat bottom (44) having a plurality of enlarged foot structures (60) and interconnecting rails (62) serving to evenly distribute loaded weights.

Abstract: An additional containment system for a fluid containment vessel includes an outer section, an inner section, and a monitoring system. A plurality of independent and distinct zones of interstitial space are positioned between the outer section and the inner section. The monitoring system is connected to and separately monitors a pressure in each of the zones. A divider plate is attached to both the inner section and the outer section and divides a first zone from a second zone. Upon detecting a leak, the monitoring system provides an indication as to the leak being in the outer section or in the inner section, and upon detecting a leak, the monitoring system also provides an indication as to which of the zones the leak is detected.

Abstract: A method of fabricating a flexible tank is disclosed which method comprises cutting away the corners of the upper layer (12) of a flattened flexible tube (10) and cutting away the corners of the lower layer (14) of the flattened flexible tube to provide, at each corner of each layer, a rectangular cut out bounded by first and second intersecting edges (24, 26/30, 32) with flaps (20, 22) between the cutouts. One of the flaps (20) of the upper layer (12) is welded to the underlying flap (22) of the lower layer along a transverse weld line (36). The upper flap and the weld line are then pulled in the direction which causes each flap (20, 22) to fold transversly whereby the upper flap (20) overlies both itself and the end part of the upper layer (12) and the lower flap (22) overlies both itself and the end part of the lower layer.

Abstract: An enclosed fluid-holding vessel having first and second opposed flat panel sides and a series of through apertures through each side, wherein the through apertures interconnect and provide structural support to the first and second panels in addition to providing an information conveying structure to viewers of one of the panels.

Abstract: A blending of geometrical shapes combine the best features of a pipe tank (standpipe) and a common multi-legged elevated tank. The bowl of an elevated tank has been designed as the top section of a standpipe or tube tank. This type design provides the near constant pressure and volume that a true elevated tank provides and a large volume of water for emergency purposes.

Abstract: A storage tank including an outer tank, one or more inner tanks arranged inside the outer tank, and supply and discharge lines in the inner tank(s) is disclosed. The, or at least one of the, inner tanks is comprised at least in part of a carbon fiber and/or a carbon fiber reinforced material and/or is reinforced with a carbon fiber and/or a carbon fiber reinforced material.

Abstract: An improved underground water storage tank having a joined-doughnut (multiple-torus) configuration, preferably a double torus although single, triple, quadruple and other toroidal configurations are possible. The concept entails a lateral merger of two or more toroidal tank sections in a multi-compartment double, triple, or greater-toroidal configuration with one or more cylindrical access ports traversing the tank orthogonally at the area of merger or along the perimeter. The tanks may be unitary as formed by rotational-molding or blow-molding. The laterally-joined torus sections increase the structural strength of the tank so that the need for reinforcing ribs or internal supports is substantially eliminated. The strength of the torus-configuration allows the tank to be buried below the frost line, and the elimination of molded ribs avoids trapped fluid or so that nearly all tank capacity can be utilized.

Abstract: A method and device for storing and dispensing a fluid includes providing a vessel configured for selective dispensing of the fluid therefrom. Provided within a vessel is a nancomposite material comprising an imidazolium surfactant and an integral solvent that is essential to the formation of the nancomposite material. The fluid is contacted with the nanocomposite material for take-up of the fluid by the polymerized nanocomposite material. The fluid is released from the nanocomposite material and dispensed from the vessel.

Abstract: A transport tank system includes a molded thermoplastic tank defining an aperture therethrough and having a discharge end and an opposing end, the thermoplastic tank being rigidly configured for holding a consumable cargo received through the aperture and including a material resistant to passage of oxygen to preserve the consumable cargo. The tank is capable of standing alone for storing the consumable cargo, or the tank can be loaded into a standard dry box container to convert the dry box container into a bulk liquid transport container.

Abstract: Embodiments of the invention relate to support arrangements for semi-membrane tank walls and, more particularly, to a universal support assembly for tanks that experience thermal expansion and contraction. One embodiment of the invention may include a tank assembly having at least one tank wall, a support structure at least partially adjacent to the wall, and a link member coupling the tank to the support structure. The link member may be configured to accommodate relative movement between the tank and the support structure through rotation. The link member may be coupled to the tank wall by a ball and socket joint and coupled to the support structure with another ball and socket joint, allowing substantially unlimited in-plane movement of the tank wall relative to the support structure.

Abstract: The disclosed floating-roof storage tank has an articulated floor with an annular outer portion, an intermediate transition portion, and a raised inner portion. Pipe elements or equipment that may hang from an outer, annular section on the roof or extend from the tank wall fit around the outside of the transition portion. Liquid-tight seams connect the transition portion of the floor to the outer portion and to the raised inner portion of the floor, sealing off an inventory-reduction compartment beneath the raised portion of the floor. The inventory-reduction compartment is supported by a solid or liquid fill or by a metal support structure. The raised inner portion of the floor may support the floating roof in a low position, and may support columns or the like that are used to support a fixed roof above the floating roof.

Abstract: A container (10) for fissile material comprises an inner annular shaped receptacle (12) contained within an outer annular enclosure (14). The receptacle (12) and the enclosure (14) define an inner chamber (16) surrounded by an outer chamber (18). A closure mechanism (20) fastens the receptacle (12) to the enclosure (14) and seals there between. Two opposing openings (22) are provided in the top of the container (10) to allow fissile material to be introduced into and removed from the inner chamber (16). The openings (22) are shielded by flanges (24) and vented caps (23) seal the openings (22). The annular container (10) is impact resistance. The outer chamber (18) acts as a buffer to protect the inner chamber (16). If the outer chamber (18) ruptures the fissile contents of the inner chamber (16) are contained. The outer chamber (18) also acts to contain any spillage of the fissile material in the event that the inner receptacle (12) fails.

Abstract: A storage tank containment system including a cubic-shaped tank having an outer shell having cylindrical walls and an internal cross brace interconnecting the cylindrical walls for the efficient storage and transportation of large quantities of fluid, for example, liquid natural gas.

Abstract: A spacerless double bottom apparatus for a storage tank having a metal bottom and upwardly extending metal sidewalls. The apparatus includes a first lining layer of flexible plastic on top of the metal bottom. A plastic grid having a plurality of openings therethrough is installed on top of the first lining layer. At least one layer of fiber insulation is installed and resides on top of the grid. An upper metal bottom on top of the fiber insulation is welded to the sidewalls to form a fluid tight secondary containment compartment.

Abstract: A deep ocean gas storage system for storing compressed gas, the system comprising an inflexible thin walled storage vessel anchored to the sea floor having an axis located in water substantially perpendicular to and on a sea floor below sea level, a gas intake for admitting and discharging compressed natural gas to and from the vessel; a water port for admitting and discharging water to the vessel using hydrostatic pressure to discharge compressed gas from the vessel at a substantially constant discharge pressure as the volume of the gas in the storage vessel decreases when water content of the vessel increases; a conduit fluidly connected with the water port oriented substantially parallel to the axis having a discharge opening above the level of sea water in the vessel; and a valve disposed at the gas intake to the vessel for controlling compressed gas admission and discharge.

Abstract: A reservoir tank comprises a tank body and a double bottom. The tank body is constituted of a roof, a tank bottom plate and a tank wall. The roof and the tank bottom plate are fixed to the tank wall by welding. The double bottom includes a double bottom plate and a rim, which are fixed to each other by welding. A leakage liquid outlet is formed at one side of the double bottom plate on which reinforcement ribs are arranged in a lattice state. Cutouts are formed in the reinforcement ribs. The double bottom plate has a declivity so that the leakage liquid outlet is positioned at the lowermost level. The rim is provided with three detection ports. Upon welding the tank wall to the rim, the inside of the double bottom becomes an airtight state.

Abstract: Collapsible structures are provided that have an enclosed interior space that can be used to hold and contain water or other matter. The interior space is defined by an enclosing wall and a base that are both waterproof to prevent leakage of the water or matter contained in the interior space. None, one or more foldable frame members can be provided as part of the enclosing wall and the base, or a foldable frame member can be provided as part of a rim member. The frame members allow the resulting structure to be twisted and folded to reduce the overall size of the structure.

Abstract: Imitating forms in nature can produce storage tanks of exquisite structure that can hold substances at very high pressures, but weighing very little. Examples are Euplectella Aspergillum and the chicken egg. They are marvelously created to withstand extreme pressures with an extremely thin and light structure. These pressures come from outside their structures to enter inward. Storage tanks may hold substances that exert pressures in the opposite direction, that is from the inside pushing out. To imitate the egg and aspergillum, the curves of the form would need to be reversed. This may produce a structure that instead of curving inward, as a sphere or oval shape, curves outward to present an arch against the outwardly expanding substance the tank is holding on the inside to effectively redistribute the forces.

Abstract: A lining system for a fluid containment vessel having an outer section with a floor surface and a vertical surface. The inner section is attached to the outer section so that interstitial space exists between the outer section and the inner section and a continuous negative pressure exists in the interstitial space. The floor surface is formed from a cost saving template. The vessel is divided into at least two independently sealed portions. The inner section includes a shell skirt that reaches a critical height within the vessel to reduce the effects of corrosion and to avoid stresses on the vertical surface. A flushing mechanism allows the area to be purged of any leaked material.

Abstract: Disclosed is a liquefied natural gas storage tank having an insulation structure which comprises an insulation wall installed on an inner wall of the tank. The tank has interior wall installed over the insulation wall. The interior wall has a first layer which directly contacts with liquefied natural gas and a second layer disposed between the first layer and the insulation wall. A plurality of anchor structures are installed on the inner wall of the tank through the insulation wall to support the interior wall.

Abstract: A pure water tank reduces stress to be applied to the tank when pure water in the tank freezes, to thereby prevent the deformation or breakage of the tank without thickening the wall of the tank. The tank has inner side-walls to define a pure water zone. On the outer side of the inner side-walls, an antifreeze zone is defined. The antifreeze zone holds antifreeze having a freezing point lower than a lowest temperature of a service temperature range of the tank. The density of the antifreeze increases as the temperature thereof decreases. The width of the antifreeze zone is set to satisfy D?? loge(H)+d0, where H is the height of the antifreeze zone.