Abstract: The present invention discloses microporous aluminophosphate (AlPO4) molecular sieve membranes and methods for making and using the same. The microporous AlPO4 molecular sieve membranes, particularly small pore microporous AlPO-14 and AlPO-18 molecular sieve membranes, are prepared by three different methods, including in-situ crystallization of a layer of AlPO4 molecular sieve crystals on a porous membrane support, coating a layer of polymer-bound AlPO4 molecular sieve crystals on a porous membrane support, and a seeding method by in-situ crystallization of a continuous second layer of AlPO4 molecular sieve crystals on a seed layer of AlPO4 molecular sieve crystals supported on a porous membrane support.

Abstract: A gas sampling canister has an electrospray nozzle for creating an ionic fluid electrospray plume. A gas sample is intake positioned to provide a gas sample flowing through the ionic fluid electrospray plume. A cooled counter electrode is positioned to collect the electrospray plume such that selected chemicals in the gas sample are captured by ionic fluid accumulating on the cooled counter electrode. A system and method for sampling gas are also described.

Abstract: An apparatus for producing water and dehumidifying air is described. The apparatus causes moisture in an incoming air stream to combine with seed water to remove moisture from the incoming air stream, and may be used to generate water from air, dehumidify air, cool air, and the like. The ability to generate water from air has global importance as the need for clean water increases each year. The apparatus for producing water and dehumidifying air uses high voltage but extremely low current, allowing for both safe and energy efficient operations. The apparatus for producing water and dehumidifying air uses a vessel containing seed water, a bubbler immersed in the seed water, a high voltage source connected to a lower electrode and an upper electrode connected to the negative side of the high voltage source. An airflow path travels through the apparatus and water molecules are extracted from the air as it passes through the apparatus.

Abstract: A wet electrostatic precipitator (1) comprises an inlet (2) for receiving a gas (4) containing a pollutant, and an outlet (6) for discharging therefrom the gas (8) from which said pollutant has been at least partially removed. Nozzles (24) are operative for purposes of spraying liquid onto at least one first vertical collecting surface (30) of at least one collecting electrode (18). A liquid distributor (42) is provided for purposes of pouring liquid onto at least one second vertical collecting surface (44), said at least one second vertical collecting surface (44) being located on a further collecting electrode (36), with said further collecting electrode (36) being located downstream of said at least one collecting electrode (18). The nozzles (24) are located upstream of the liquid distributor (42), as viewed with reference to the direction of flow of the gas.

Abstract: A highly effective and regenerable method, system and device that enables the desulfurization of warm fuel gases by passing these warm gasses over metal-based sorbents arranged in a mesoporous substrate. This technology will protect Fischer-Tropsch synthesis catalysts and other sulfur sensitive catalysts, without drastic cooling of the fuel gases. This invention can be utilized in a process either alone or alongside other separation processes, and allows the total sulfur in such a gas to be reduced to less than 500 ppb and in some instances as low as 50 ppb.

Abstract: An improvement is provided in grease trap assemblies for grease traps to be positioned on the roof of commercial buildings such as restaurants. The improvement comprises a system for degreasing that uses, in combination, a grease absorbent material that is porous rock, preferably lava, and a grease digestible microbe capable of digesting fatty acids from cooking fats and oils. Each can as well be used alone, but best results are achieved with the combination.

Abstract: A filter cleaning system according to one aspect of the invention comprises a baghouse including a tubesheet having a plurality of openings extending therethrough. A plurality of filter cartridges is sealingly mounted to the tubesheet at respective openings. Each filter cartridge has an open end and pleated media for filtering particulates from gas flowing therethrough. The filter cartridge has particulates accumulate on the pleated media. A pulse cleaning system intermittently directs cleaning pulses of air into the open ends of the filter cartridges media at a supply pressure in the range of about 20 PSI to 60 PSI to dislodge accumulated particulates from the pleated media.

Abstract: A separation, purification and recovery method of SF6, HFCs or PFCs is disclosed, which comprises a step for forming a gas hydrate including components in addition to SF6, HFCs or PFCs. It is possible to separate and recover fluoro-gas at a much lower cost as compared to a conventional method for thereby obtaining an economical effect and preventing an emission of SF6, HFCs or PFCs which corresponds to Non-CO2 having a higher earth warming index, which leads to preventing an earth warming phenomenon. So, the present invention might be widely applied.

Abstract: A mat material includes an inorganic fiber, a first sheet material and a second sheet material. The first sheet material is provided on a first surface of the mat material. The second sheet material is provided on a second surface of the mat material. The first sheet material and the second sheet material show a different elongation amount in a longitudinal direction of the mat material under a same tensile load.

Abstract: A vacuum cleaner is provided that includes a main cleaner body comprising a discharge grill to discharge air from which dust has been separated; a grill cover mounted on the discharge grill to pivot between a closed position and an open position in relation to the discharge grill; a fragrant odor generating apparatus including a first shutter and second shutter that are mounted on the grill cover and that are opened by discharge pressure of air discharged through the discharge grill and closed by their own weight, and a fragrant agent disposed in an air path between the first shutter and second shutter; and a shutter locking unit to lock the first shutter in a closed position when the cleaner is not in use.

Abstract: The present invention describes a beverage system (1) comprising a coffee machine (2) for preparing and dispensing hot beverages, and a water dispenser (3) for processing and dispensing drinking water; this system is inexpensive and it requires little space. To this end, it is suggested that wherein the coffee machine (2) and the water dispenser (3) should be connected to one another in such a way that at least one functional component of the coffee machine (2) or of the water dispenser (3) can be utilized both for the coffee machine (2) and for the water dispenser (3).

Abstract: Espresso machine with disposable filter or capsule comprising a chassis (1), a porta-capsule body comprising a rotating part (2) and a fixed part (3), which lodges a disposable filter or capsule (14), a heat exchanger (5), an electro-pump (24), an infusion piston (6), a pressure cam (7), a coffee brewing cam (19), control and regulation means, supporting means, fixing means, sealing means, characterized by the fact that: the seal between the capsule (14) and the infusion piston (6) is ensured by the clamping given by a vertical mechanical motion, by means of the rotation of said cam (7); the removal of the capsule is ensured by a rear sensor shaft system (29) and a front gravity extractor (35); it uses a semi-automatic system to load and remove the capsule with the rotation of said rotating part (2) of the porta-capsule body; It is equipped with an electro-mechanical clamping and safety system operated by said cams (7, 19) and controlled by a number of micro-switches;

Abstract: A flexible composite with integral flights is provided and methods for making the same. The composite is made from, for example, silicone rubber, urethane rubber, polytetrafluoroethylene or other polymer. The composites are useful for making conveyor belts for use in high temperature food processing, and particularly for contact toasters. The conveyor belts are an improvement over the prior art in that they prevent slippage of the articles conveyed, may be manufactured at low cost, and are relatively easy to clean.

Abstract: In a steam cooking apparatus in which high temperature steam of alkaline water is used as the heat source for cooking food materials, alkaline water is used as the water source of the steam to remove off fats and proteins from the food materials thereby to provide healthy cooked foods.

Abstract: A collecting device (1) for catching crumbs which fall through constructional gaps in the conveyor belt (4) of an oven (2) during baking. The device (1) has an elongated upper plate (10) having a plurality of through perforations (10a) which is mounted beneath the top flight (4a) of the conveyor and extends across the width of the belt (4). A directing panel (7) is attached to each longitudinal edge (10b) of the upper plate (10) perpendicular to the plate (10). The crumbs which fall through the conveyor belt (4) are first received in the perforations (10a) in the upper plate (10) and then directed by the panels (7) into a removable container (5) beneath the lower edges (7b) of the panels. In an oven (2) which has a metal sheet (20) installed beneath the top flight (4a) of the conveyor belt (4) parallel to the belt, the upper plate (10) is installed by firstly excising a similarly sized portion of material from the metal sheet (10) and then substituting the excised portion with the upper plate (10).

Abstract: A drying device having a bowl, a basket with a plurality of perforations, a cover assembly, and a drive assembly. The drive assembly includes: a driving mechanism mechanically coupled to a rotatable lid that is configured to mate with a rotatable basket, and a handle pivotally attached to the cover assembly. The handle is configured to actuate the driving mechanism upon rotation of the handle about an axis from a first position to a second position. The drying device may also include a locking mechanism and/or a braking mechanism.

Abstract: This invention refers to a machine for the cutting and extraction of the stem of vegetables with tree-like structure and the cutting and extraction method of the stem with this machine which provides pieces branched into different sizes of the edible part of the vegetable. The machines is characterized by being constituted by at least one tray in which the vegetable to be cut is deposited which slides along a horizontal structure and by several vertical slide guides with several cutting devices for the separation of the useful tree-like material, a cutting device for the division of the stem into pieces and a cutting device for the separation of the stem from the edible part. It can be additionally equipped with knives arranged radially on the cutting head for the division of the tree-like material into portions.

Abstract: In one embodiment, a pad printing system configured to print a work piece having at least a first print area and a second print area distal from the first print area is provided. The pad printing system may include a first print station and a second print station, wherein each print station is independently operable and configured to transfer a fluid image from an ink tampon to a work piece at least once during a printing cycle. The pad printing system may further include a moveable platform and a work piece holder supported by the platform having a first orientation and a second orientation. The first orientation may be configured to align the first print area with an ink tampon in the first print station and the second orientation may be configured to align the second print area with an ink tampon in the second print station.

Abstract: A printing press is disclosed. The printing press includes at least one rotating reel changer, which receives the to-be-printed paper web as a roll, and a printing couple, which applies ink and dampening solution via the rotating cylinder rollers to the paper web, as well as a folding unit with rotating folding unit cylinders for assembling the printed paper web into the desired printed products. A transponder is arranged in at least one rotating component of the printing press and a receiver is arranged in a non-moving part of the printing press.

Abstract: A lithographic printing plate precursor includes an image-recording layer and a protective layer containing a stratiform compound, wherein at least one of the image-recording layer and the protective layer contains a polymer containing as a repeating unit, a structural unit having an ammonium structure.

Abstract: An igniter body for an airbag inflator comprising a stamped metal body portion having a generally annular flange and a central opening. A generally cylindrical plastic connector portion is disposed within the annular flange and is connected to the body portion. The connector portion may be integrally molded within the body portion. The central opening in the body portion is constructed to receive an initiator therein, and the connector portion is constructed to receive a power module therein for connection to an initiator disposed in the central opening and surrounded by a sleeve that is secured to the body portion to retain the initiator thereon.

Abstract: A safe and arm device includes a booster base assembly having a booster base housing and a rotatable barrier. The booster base housing includes a shaft port extending substantially inline with a longitudinal axis, at least three initiator ports disposed about the axis, and a matching number of explosive transfer paths in respective communication with the at least three initiator ports. The barrier includes a matching number of fire-train transfer ports and a drive shaft. The drive shaft of the barrier is coupled within the shaft port of the booster base housing allowing the barrier to be selectively rotationally positioned about the axis into at least one of a safe position and an arm and fire position, allowing the fire-train transfer ports to be substantially aligned with the explosive transfer paths when the barrier is positioned in the arm and fire position. A booster basket assembly is also provided.

Abstract: An explosive charge is disclosed which has a spatial shape comprising explosive material and, in the course of the explosion, unfolds a spatially anisotropic pressure action in at least one main action direction, in which the pressure action is greater than in the other action directions. The spatial shape comprising the explosive material has a surface area facing toward the at least one main action direction and extends in the at least one main action direction, particles are applied and/or a material layer disintegrating into particles during the explosion is applied to the surface area, the particles comprise a nonexplosive material, and a total mass of the particles is less than a mass of the explosive material.

Abstract: A multi-piece projectile for a small arms cartridge includes a metal cup that has a bore, a plastic sheath having a through hole and a high-density core. The cup is a cylindrical metal structure having a bore. The sheath is a cylindrical end and a conical end and a through hole. The core is a cylindrical structure having conical end and a blunt end. The projectile is assembled by placing the core in the through hole of the sheath and then pressing the sheath into the bore of the cup. The assembled projectile is attached to the cartridge by crimping the cup to the orifice in the end of the cartridge casing after it is filled with the propellant. When the projectile is fired all of the components remain coupled together but break apart upon impact with a target. Because the core has a higher mass than the other components the components separate very easily, the majority of the kinetic energy remains in the core.

Abstract: In at least one embodiment, a shotshell comprises a casing defining an internal chamber, a plurality of first shot pellets within the internal chamber and a plurality of second shot pellets within the internal chamber. The first shot pellets comprise a first shape and the second shot pellets comprise a second shape that is different from the first shape.

Abstract: A magnetic pacer system and method for adjusting vehicle speed in an amusement park ride. The system includes a controller and memory that stores speed settings such as upper and lower speed limits for the vehicle in a specific portion of a ride. A magnetic thruster is positioned near the portion of the ride, and a signal or signals are sent from position sensors to the controller. The controller determines the actual velocity of the vehicle as it travels along a direction of travel and acts to compare the determined vehicle velocity with the stored and desired speed settings. The controller then determines a magnetic force to apply to the vehicle including selecting whether the force is along the direction of travel or opposite to provide acceleration or deceleration of the vehicle. The magnetic thruster is selectively operated to generate a magnetic force to act on the vehicle.

Abstract: A track system for storage and retrieval of materials for use with warehousing vehicle that rides upon tracks in horizontal configuration for storage locations, and that is capable of switching to and riding a sloped track to ascend or descend vertically. A set of transition exchanges allows the vehicle to access multiple levels of storage “flooring” or shelving. The exchanges use ramps, or movable sections of railway, that may be moved out of the way of a set of wheels of the vehicle, while other ramps are set in place to provide support to some wheels of the vehicle, whereby the vehicle may selectively either travel along the elevator track, or to move between elevator track and level storage locations.

Abstract: The invention relates to a convoy comprising at least two intercoupled rail vehicles between which an adapter is arranged, said adapter including at least two interconnectable sets of bellows which are respectively provided with a plurality of frames, in addition to adapter sheets, and a support for the adapter sheets, that can be displaced on a sliding plate arranged between the rail vehicles above a coupling device. At least one anti-catching device is provided on the intercoupled end regions of the rail vehicles, said anti-catching devices extending essentially over the entire width of the vehicle, and the two rail vehicle are intercoupled by a spiral sleeve. The sliding plate is embodied as three parts, part of the sliding plate arranged on the spiral sleeve being detachably connected to the coupling device.

Abstract: A leveling agent for water-based floor polishes which contains a nonionic surfactant, characterized in that the nonionic surfactant is at least one member selected from the group consisting of compounds represented by the general formula (1): R1—C(R2)H—CH2O—(C2H4O)m(C3H6O)n—H [wherein R1 represents C4-10 alkyl; R2 represents C6-12 alkyl; m is an integer of 1 to 10; n is an integer of 0 to 6; and the ethylene oxide unit(s) and the propylene oxide unit(s) are bonded in any desired sequence, i.e., in either block or random arrangement] and compounds represented by the general formula (II): R3O—(C2H4O)p(C3H6O)q—H [wherein R3 represents at least one residue of one or more aliphatic alcohols selected among 3,5,5-trimethylhexanol, isooctyl alcohol, isodecyl alcohol, isoundecyl alcohol, and isotridecyl alcohol; p is an integer of 0 to 8 and q is an integer of 0 to 8, provided that p+q is an integer of 2 to 8; and the ethylene oxide unit(s) and the propylene oxide unit(s) are bonded in any desired sequence, i.e.

Abstract: An aqueous metal treatment composition designed to improve adhesion and corrosion resistance of the metal surface includes an organofunctional silane in combination with a fluorozirconic or fluorotitanic acid, methanesulfonic acid and nitric acid. The methanesulfonic acid acts to reduce sludge formation. Preferably, the composition also includes a fluorosilicic acid which likewise reduces sludge and improves corrosion resistance.

Abstract: A carbon black aqueous dispersion exhibits excellent dispersibility in an aqueous medium and exhibits excellent rubbing resistance (quick-drying properties), discharge stability, and the like as an aqueous black ink for an inkjet printer or the like. The carbon black aqueous dispersion includes an aqueous medium and carbon black dispersed in the aqueous medium, acidic groups produced on the surface of the carbon black by liquid-phase oxidation being neutralized with a basic amino acid and a basic compound other than the basic amino acid, and hydrogen atoms of the acidic groups being replaced by the basic amino acid and the basic compound.

Abstract: A process for manufacturing an ink, or pigment formulation (e.g. a concentrate) for use in inks, comprising filtration of a composition comprising a particulate pigment and a liquid medium through an inorganic filter having pores of a uniform size below 10 microns. The process accurately removes oversized particles that could cause problems in inkjet printers without wasting non-problematic under-sized pigment. High flow rates are achieved even with low trans-filter pressure differences. In one embodiment, high flow rates are maintained by selection of pH and/or ionic strength. The filters are more robust than conventional polymeric filters and withstand cleaning with aggressive cleaning agents.

Abstract: The present invention provides an ink-media set, record printed by use of the ink-media set, an inkjet printing method, and an inkjet printing apparatus which includes ink that has at least water, dye, and humectant and surface tension thereof is 20 to 35 mN/m at 25, a support, and a recording medium having the support and at least one surface thereof has a coating layer wherein transfer rate of the ink to the recording medium measured by a dynamic scanning absorptometer in 100 ms of contact time is 4 to 15 ml/m2 and transfer rate of the ink to the recording medium measured by a dynamic scanning absorptometer in 400 ms of contact time is 7 to 20 ml/m2.

Abstract: A composition for sealing leaks in an engine includes a water-soluble metal silicate, a body of organic fibers, and a body of inorganic fibers. The organic fibers may include synthetic polymeric fibers as well as natural fibers such as cellulose and animal-derived materials. The inorganic fibers may include refractory fibers such as glass, ceramic or mineral fibers. The composition may be prepared in the form of a dry material or as a solution. Also disclosed are methods for using the composition.

Abstract: A method to produce a thin-layer lignocellulosic composite having increased resistance to moisture-induced shrinking or swelling is provided. The method includes forming a lignocellulosic composite mixture including at least one type of lignocellulosic fiber having a predetermined moisture content of at least about 4 wt %, at least about 1 wt % of an organic isocyanate resin, at least about 0.1 wt % of a tackifier, and at least about 0.1 wt % release agent, wherein the mixture is substantially free of added wax. The method further includes pre-pressing the mixture into a loose formed mat and pressing the mat between two dies at an elevated temperature and pressure and/or a sufficient time to further reduce the thickness of the mat to form a thin-layer composite of predetermined thickness, and to allow the isocyanate resin to interact with the lignocellulosic fiber such that the resultant thin-layer composite has a predetermined resistance to moisture.

Abstract: A method is described which enables antibacterial properties to be attributed to a titanium surface by applying titanium dioxide suspensions of nanometric dimensions.

Abstract: A liquid composition for preventing bubble adhesion, containing a diacetylene tetraol compound expressed by the following General Formula (1): (where R1 and R2 are each independently a C1 to C3 alkyl group, —O-Et- is an oxyethylene group, and k, l, m, and n are each an integer from 0 to 2).

Abstract: An embodiment of the present invention includes a method of cementing in a subterranean formation comprising: providing an extended settable composition comprising hydraulic cement, cement kiln dust, water, and a set retarding additive, wherein the extended settable composition is capable of remaining in a pumpable fluid state for at least about 1 day; adding a cement set accelerator to the extended settable composition; introducing the extended settable composition into a well bore; and allowing the extended settable composition to set. Another embodiment of the present invention includes a method of cementing in a subterranean formation comprising: providing an extended settable composition comprising hydraulic cement, cement kiln dust, water, and a set retarding additive; storing the extended settable composition; adding a cement set accelerator to the extended settable composition; introducing the extended settable composition into a well bore; and allowing the extended settable composition to set.

Abstract: A folding table and chair each have an unobtrusive folding mechanism that cannot be easily seen when unfolded for use. Because the folding mechanism is not readily seen, folding tables and chairs of a number of well-known and popular styles can be provided that are suitable for use as everyday home furniture. Folding furniture may be particularly desirable for apartment and condominium dwellers who have limited living space and need to occasionally store bulky furniture to fully use such space. The folding furniture of the invention is also easier to move than traditional furniture, including the hinge of the table, which can also serve as a carrying handle.

Abstract: An adjustable, articulable platform, changeable to and from a “U” shape to an “H” shape, is attachable to the distal end of an articulable support arm of a transport vehicle. The platform is arranged to adjustably surround an elevated chimney on at least three sides thereof. The platform comprises: a lower anchor plate centrally disposed within an elongated lower support frame; a rear anchor plate connected perpendicularly to the lower anchor plate, the rear anchor plate centrally and connectively disposed within an elongated rear wall frame, comprising bridging portions of the platform. A right sidewall frame and a left sidewall frame is connected to respective end portions of the elongated rear wall frame.

Abstract: A pallet has an upper deck and a lower deck. The upper deck and the lower deck are connected by a plurality of spaced apart columns. Fork insertion apertures are formed by the upper deck, the columns and the lower deck to all four sides of the pallet. The pallet includes at least an upper deck member and a lower deck member, at least the lower deck member includes a low density core and a surrounding shell of reinforced plastic. The pallet may be made using reaction injection moulding, with said plastic being predominantly polyurethane.

Abstract: A table top with a flip mechanism has a frame of two spaced apart legs, each leg having two pivoting wheels, a spine connecting each leg, and a table top hingedly connecting to the spine for rotation off the center of the table. The spine and table top extend upon the longitudinal axis of the invention. The spine has generally two parallel spaced apart members. The table top hingedly connects to one member and rests upon the other member when the table top is flat. Lifting the table from a longitudinal edge opposite the hinges, the table top pivots upon the hinges and rotates about the spine until upright. The upright table is then parallel to the legs and occupies a minimum footprint. Alternatively, the legs have wheels for easy movement of the table.

Abstract: A structure constructed from plastic may include may include one or more reinforcing portions that are sized and configured to prevent damage to the structure. For example, the structure may be a table top constructed from blow-molded plastic and the table top may include a body with one or more corners. The corners may include an interior portion and an exterior portion, and reinforcement portions may be sized and configured to help prevent damage to the corners of the table top. In addition, one or more depressions may be at least partially disposed within the reinforcement portions, if desired. The reinforcement portions, for example, may include one or more inwardly and/or outwardly extending portions.

Abstract: A workbench includes two opposite sides each having a connection member mounted thereon. Four stationary members respectively mounted to two opposite ends of each of the two connection members. Four sleeves respectively mounted to two opposite ends of each of the two connection member and extending through the connection member and the stationary member. Four legs respectively inserted into a corresponding one of the four sleeves for supporting the top of the workbench.

Abstract: Disclosure relates to a presser foot device for a sewing machine which includes a presser bar mounted on a head mounted at a distal end of an arm and having a lower end with a presser foot, the presser foot device lifting the presser foot upward and downward together with the presser bar. The presser foot device includes a presser foot lifting lever mounted for lifting the presser foot upward and downward and a support unit which supports the presser foot lifting lever so that the presser foot lifting lever is switchable between a first position that is located below the arm of the sewing machine and a second position that is located behind the head of the sewing machine.

Abstract: A pedestal (1) for a sailing boat comprises a casing (2) and inside such a casing (2): at least one driving wheel (11a, 11b) associated with a motion input shaft (3), at least one driven wheel (12a, 12b) associated with a motion output shaft (4) and at least one motion transmission element (13a, 13b) from said at least one driving wheel (11a, 11b) to said at least one driven wheel (12a, 12b). The pedestal (1) further comprises, also inside the casing (2), a speed variation system selectively activatable to vary the rotation speed of the motion output shaft (4) with respect to that of the motion input shaft (3).

Abstract: A sailcloth in roll good form permits efficient and cost effective construction of cross cut and vertical cut, laminate sails based on “off-angle,” (assymetrical) load bearing fibers. The sailcloth also may include a conventional warp and fill thread or fiber layout. Such sailcloth illustratively is significantly less susceptible to load force stretch, creep elongation, and airfoil shape deformation because, among other things, it is not dependent on the load bearing limitations of symmetrical, woven or knitted roll good sailcloth.

Abstract: A method for controlling the motion of marine vessel (10) comprises mounting a gyroscope (12) in a gimbal and fixing the gimbal inside the vessel. In one arrangement, a trunnion axis (18) of the gimbal is mounted athwart the vessel (10). Sensors (20) are mounted at various locations on the vessel (10), as well as on the gyroscope (12), to measure the motion of the vessel (10), including motion caused by wave action. Signals from the sensors (20) are processed by a computer that in turn controls a motor to apply a force about the trunnion axis (18) to the gyroscope (12) in a direction that causes the gyroscope (12) to provide a reactive torque urging the vessel (10) to follow the slope of the wave and reduce the motion in the vessel (10). Thus, the method causes the gyroscope to apply reactive force that causes the vessel (10) to follow the slope of the waves acting on the vessel.

Abstract: A ship for use at high speed and/or heavy seas having a single long and slender hull, a sharp bow and the aft end of the hull has a flat or slightly V-shaped bottom with at least one aft rudder, and at least one propeller or water jet for propulsion whereby the foreship has a draught that is equal or more than the draught of the aft end. The bow has a control surface that converts the water flow along the forward moving ship into an adjustable lateral force.

Abstract: An aquatic device (10) for providing manoeuvrability to a user (11) moving in water. The aquatic device (10) may be propelled through the water in any appropriate way, such as by being towed through the water or propelled through the water by the user (11). The aquatic device (10) comprises a handle means (20) adapted to be grasped by the user (11) with arms extending forwardly, and two fins (21, 22) movable one with respect of one to the other to manoeuvre the aquatic device. The aquatic device (10) can be manoeuvred through movement of the fins (21, 22) to provide directional control or variation to the orientation of the aquatic device. The directional control may include both steering and depth control. The handle means (20) are operably connected to the two fins (21, 22) whereby the user can manually control movement of the fins one with respect to the other.