Abstract: Embodiments of features for a paper punch machine are shown and described. Preferably, these features, which may be called “accessories” whether they are built-in original equipment manufacture or retrofit equipment, assist in proper paper alignment and punch control. A first accessory is an improved paper stop that is both grossly-adjustable and finely-adjustable, by a preferred combination of a biased sliding mechanism, followed by a fine-tuning mechanism gradually laterally moving the paper stop by causing a threaded shaft to rotate after the paper stop is already in the preferred “gross-adjustment” position. This way, the paper stop is brought close to the proper marking on the housing appropriate for a particular paper or die assembly, and then exact adjustment may be made in very small and precise amounts.

Abstract: This invention discloses a gun barrel that can be used to fire large projectiles beyond the lower atmosphere, and in particular, that can be used to assist with the launching of satellites into orbit. The gun barrel has an outer support layer, an inner support layer lining the bore of the gun barrel and a compressible material disposed between the outer support layer and inner support layer. The support layers are preferably steel, and the compressible material is preferably concrete. In one embodiment, the breech portion is made of a metal such as steel, and the remainder of the gun barrel is made of an inner support layer an outer support layer and a layer of compressible material therebetween. The gun barrel of this invention is less expensive to make and lighter than a similarly-sized gun barrel made of steel, while being sufficiently strong to launch large projectiles.

Abstract: External armament apparatus, including a machine gun, an associated ammunition box for supplying belted ammunition to the gun, a flare dispenser, a missile launcher or other external stores apparatus, and a forward looking infrared sensor (FLIR), is exteriorly supported on a landing gear sponson tow plate of a helicopter, adjacent a cabin area gunner's window. The external mounting of the gun and other armament apparatus frees up cabin space, permits the gunner's window to be closed with the gun in a ready position, and permits a 0.50 caliber machine gun to be used an alternative to either a 7.62 mm mini-gun or a single barrel 7.62 mm machine gun adjacent the gunner's window.

Abstract: A braking system is provided for mitigating the linear or rotational motion of an object having an axis, the linear or rotational motion being coaxial with the axis. In particular, the motion is the type which is the result of an impulse imposed over a short period of time, typically less than one second. The object whose linear or rotational motion is to be mitigated is disposed coaxially within a tube. The braking system includes at least one brake shoe positioned within an annular free space defined by the outer surface of the object and the inner surface of the tube. The at least one break shoe may be urged against the outer surface of the object or the inner surface of the tube to effect the mitigation.

Abstract: A controlling and computing device performs the steps of: differentiating a slider position represented by a position detection signal fed from a position sensor, and calculating the velocity of the slider, differentiating the calculated velocity so as to calculate an acceleration: using a slider target position, the slider position, the velocity and the acceleration to calculate position instruction values to be fed to two servo amplifiers; performing a computation on the respectively calculated position instruction values, so as to compensate for a pressure change which has occurred in each of pressure chambers due to a change in the position of a pressure receiving plate in a cylinder chamber; and producing the respectively compensated position instruction values to the two servo amplifiers.

Abstract: A system and method for controlling at least one hydraulic actuator of a hydraulic system includes a flow rate measurement of a hydraulic fluid flow traveling into and out of a cavity of the hydraulic actuator. The flow rate is used to calculate piston information corresponding to a position, velocity, acceleration, and/or direction of movement of a piston of the hydraulic actuator. The piston information can then be provided to an output device to aid in the control of the hydraulic actuator. Alternatively, the piston information can be compared to a reference signal relating to a desired position, velocity, acceleration, and/or direction of movement of the piston to produce a control signal, which can be used to adjust the hydraulic fluid flow and provide the desired actuation of the piston.

Abstract: A high pressure fuel pump includes a cylinder having a pressurizing chamber and a plunger inserted into the cylinder. The plunger is axially reciprocated by a lifter to pressurize fuel in the pressurizing chamber. A seal member encompasses a portion of the plunger that is projected from the cylinder. The seal member disconnects a cylinder side space surrounded by the seal member from a lifter side space outside the seal member. The seal member has an annular lip portion that contacts a peripheral surface of the plunger, and the annular lip portion has a pair of lips separated from each other in an axial direction of the plunger. An axial distance between the lips is greater than a stroke of the plunger. As a result, fuel does not enter the lifter side space, and lubricating oil does not enter the cylinder side space.

Abstract: A multipart cooled piston for a combustion engine has a piston upper part of steel comprising a combustion bowl and a ring wall with ring belt, and a piston lower part comprising a piston skirt, pin bosses for receiving the piston pin connecting the piston to the connecting rod, and pin boss supports connected to the piston skirt. An inexpensive manufacture and high form stability are achieved in that a cooling channel formed in the piston upper part has holes towards the piston crown spread over its circumference, with the piston material present between such holes forming supporting ribs that each form sections of an all-round ring rib radially to the longitudinal piston axis (K), The piston lower part has an annular and all-round carrier rib with a connection surface connected to the pin boss supports.

Abstract: A water level detecting device for a percolator includes a pot body having a coffee powder container provided on the topside and a buoy device installed in the interior. The buoy device consists of a buoy rod fitted thereon with a buoy. A detecting device (a magnetic induction element or a photoelectric element) is provided on a power base or on the outer wall of the pot body or in the buoy rod. The buoy is able to move upward and downward together with the height of the water level of a water tank of the pot body. When the water level of the water reservoir reaches a lowermost limit preset, the detecting device will interact with the buoy to cut off power of the heater of the pot body, enabling the percolator to cut off electricity automatically to enhance safety in use.

Abstract: A high volume multi-chamber barbecue and smoker apparatus is provided, including multiple smoker chambers and multiple heating chambers interconnected by a ventilation and exhaust system of pipes with manually operated valves for controlling air and smoke flow between multiple chambers as well as to the outside environment. The ventilation and exhaust system permits ventilation and drafting to the apparatus to be controlled so that a charcoal or wood fire can be more quickly and efficiently started, and then air ventilation and smoke selectively adjusted during cooking to control the amount of heat or smoke delivered to the food in various smoker and heating chambers of the multi-chamber apparatus.

Abstract: The present invention relates to an indicator on a household appliance to alert a user to clean the appliance. For example, the indicator alerts the user when to clean a crumb tray in a toaster.

Abstract: An automatic toaster, comprising heating means (2) with slices of bread pass passing in front of said heating means, and means for transporting slices of bread to said heating means, characterized in that the means for transporting the slices of bread include a spiral-shaped rotating element (6) defining a plurality of housings (11) for slices of bread (30), the length of said housings corresponding essentially to the pitch of the spiral (6).

Abstract: A grilling component employed to grill food items includes a grilling surface made of a material having a low constant of thermal expansion. In one example, the grilling surface is made of Invar™. Invar™ is a metal allow comprised of Iron and 36% Nickel, and may include other trace elements. Invar has a low constant of thermal expansion and therefore moves and expands very little when heated. The grilling surface further includes a non-stick coating, such as Teflon™. The grilling surface can also be a conveyor belt which travels over a heater.

Abstract: An apparatus assembly for forming a compound dessert in a predetermined dome shape including a first outer mold having a dome shaped bowl with a closed semi-spherical end and an open end, and a ring shaped support base secured to the closed end of bowl body. A cover including a second dome shaped bowl of a smaller diameter and a surrounding circular skirt is mounted to an extended portion of the outer mold with the second bowl extending to a chamber of the first outer mold.

Abstract: The present invention provides systems for the injection delivery of at least two fluid doses to a small bird by penetrating the skin of the recipient bird with at least two injection needles. It is then possible to simultaneously inject drugs, or other fluid vaccines that do not mix well or whose mixture would be detrimental to the stability or efficacy of the active ingredients therein. The present invention provides a novel injection needle support for connecting the injection needles to dose distributors and fluid supply containers while maintaining the injection ends of the injection needles in a substantially parallel arrangement. The injection needle support typically is attached to a carrier connected to an actuator, an actuator power source and a switch mechanism wherein the actuator, when activated, can reciprocally move the carrier and injection support toward and away from an injection position.

Abstract: A device for forming a fruit kabob from uniform sections of fruit including melons comprises an elongate, preferably transparent, shaping tube. In one embodiment, the shaping tube is of cylindrical configuration and in another embodiment the shaping tube is of generally rectangular configuration. An elongate plunger is positioned in the shaping tube and moveable therein. The shaping tube has a cutting edge at its front end and when pressed successively into fruit forming uniform sections of fruit within the tube. A skewer is inserted into the shaping tube and through the side of the plunger to impale the cut fruit sections thereon whereby when the plunger is advanced, the impaled fruit sections and skewer will be expelled from the shaping tube.

Abstract: A bundling assembly for use with a strapping machine that is configured to position a strap material around a load and tension the strap material around the load includes first and second moving belts positioned at the strapping machine entrance in opposing relation to one another. The belts each have a paddle mounted thereto and define a pathway through the bundling assembly. A movable stop is positioned at the exit of the strapping machine and is movable between a stop position and a convey position. The moving belts rotate to contact the paddles with the load, urging the load into the entrance of the strapping machine and into an area under the chute. The belts stop rotation, thus stopping movement of the load upon contact of the load with the stop. The movable stop then moves to the convey position and the moving belts rotate such that the paddles move the load out of the exit of the strapping machine. A stabilizing assembly applies a slight pressure on the load during the strapping cycle.

Abstract: In a cooling device and method for cooling an engraving system of an engraving device given engraving devices for engraving printing form surfaces, the cooling device comprises a plurality of cooling units wherein each cooling unit is allocated to respectively cool one engraving head.

Abstract: A device for printing on paper or plate-shaped materials, such as plates made of glass, ceramic, glass-ceramic or plastic materials, having a transport device for the plates to be printed and an electrostatic, in particular an electrographic, printing device arranged above it. With the printing process of this invention, in an efficient manner, a conveying and centering unit of a screen-printing device is combined as a transport device with the electrostatic, in particular the electrographic, printing device, which is compatible with the upper unit of the screen-printing device.

Abstract: A stencil printing machine includes a drum which is rotatable and has an outer peripheral wall formed by an ink impermeable member and in which a stencil sheet is mounted on a surface of the outer peripheral wall. An ink supply device has an ink supply unit at a printing position upstream of a maximum printing area of the outer peripheral wall of the drum and supplies ink on the surface of the outer peripheral wall from the ink supply unit. A pressure roller presses a fed print medium onto the outer peripheral wall.

Abstract: A quick release pallet for a screen printing machine in which the pallet has locating recesses at either ends which locate the pallet on the pallet arm of the screen printing machine by engaging locating lugs on the pallet arm. A toggle clip secures the pallet in position. The advantages are that the pallet has no attachments and can be very quickly positioned and released. Because there are no screw holes in the top surface of the pallet it has a larger print area. The pallet can be modified to a vacuum pallet with a perforated or porous top plate and a vacuum manifold connected to the base plate and air spaces being provided by machined channels in the base plate or a mesh interposed between the base plate and the top plate.

Abstract: A printing press system with water content sensing capability is disclosed. Many printing operations, including keyless or lithographic printing presses, use an emulsion of ink and water to perform the printing operation. It is important that the emulsion maintain a proper balance between the ink and water. The disclosed system employs a sensor which may be placed in the ink train of the printing press to constantly monitor the level of water within the emulsion. The sensor may be a capacitive type sensor which detects changes in the dielectric constant of the emulsion, and based on a comparison of the measured value and a predetermined desired value, prompts the press operator regarding the imbalance to enable corrective action to be taken.

Abstract: A satellite printing machine for printing sheets includes a single central common counter-pressure cylinder and at least four satellite printing groups arranged in a peripherally distributed manner about the counter-pressure cylinder in a rotational direction thereof from a feed cylinder to an output cylinder. The counter-pressure cylinder is provided in the form of a rubber blanket cylinder. At least one additional satellite printing group cooperates with the counter-pressure cylinder for at least single-color back side printing, and is disposed in the rotational direction of the counter-pressure cylinder before the feed system and after the output cylinder.

Abstract: A rotary body for compensating the fanout in a printing press. The rotary body forms alternatingly foot sections and head sections projecting over the foot sections by radial height differences along an axis of rotation. The rotary body is a torsion-proof connection of parts or is a one piece structure. The radial height differences increase in the circumferential direction from minima, which they have along a first straight line offset in parallel to the axis of rotation, to maxima, which they have along a second straight line offset in parallel to the axis of rotation.

Abstract: A flexographic printing machine having at least one inking unit in which the setting of the printing position of the format cylinder and the anilox roller can be achieved by adjusting the format cylinder to the impression roller and the anilox roller to the format cylinder using adjustment equipment. The setting of the printing position of the format cylinder and/or the anilox roller is achieved by manually operating this adjustment equipment, while the removal of the format cylinder and/or the anilox roller from the previously manually set position and the readjustment of these rollers into the same position can be achieved using at least one drive.

Abstract: A device for controlling delivery of an amount of fluid has a first rotating device having at least one peripheral first fluid transfer section, a second rotating device having at least one peripheral second fluid transfer section, and a device for setting a phase between the first and second fluid transfer sections. The device may be used for providing ink or dampening solution in a printing press.

Abstract: An apparatus for mounting a printing sleeve on a press cylinder includes an inherently stiff annular holding element having an inner shape which is matched to the outer shape of the sleeve, and mutually facing ends defining a slit having a width. At least one clamp urges the ends toward each other to form a butt joint, so that the holding element can clamp the sleeve with a clamping force which is limited by the width of the slit. A device is provided for expanding the holding element so that the clamping force on the sleeve can be released.

Abstract: A method of lithographic printing is disclosed which comprises the steps of unwinding a web of an imaging material from a supply spool, the imaging material comprising (1) a flexible lithographic base having a hydrophilic surface and (2) an image-recording layer which is removable in a single-fluid ink or can be rendered removable in a single-fluid ink by exposure to heat or light, wrapping the imaging material around a cylinder of a printing press, image-wise exposing the image-recording layer to heat or light, processing the image-recording layer by supplying single-fluid ink, thereby obtaining a printing master, printing by supplying single-fluid ink to the printing master which is mounted on a plate cylinder of the printing press, removing the printing master from the plate cylinder, preferably by winding up on an uptake spool.

Abstract: A method of lithographic printing is disclosed which comprises the steps of unwinding a web of a flexible lithographic base from a supply spool, the lithographic base having a hydrophilic surface, wrapping the lithographic base around a cylinder of a printing press, applying on the lithographic base an image-recording layer which is removable in a single-fluid ink or can be rendered removable in a single-fluid ink by exposure to heat or light, image-wise exposing the image-recording layer to heat or light, processing the image-recording layer by supplying single-fluid ink, thereby obtaining a printing master, printing by supplying single-fluid ink to the printing master which is mounted on a plate cylinder of the printing press; and removing the printing master from the plate cylinder, preferably by winding up on an uptake spool.

Abstract: Color graphic-based receipts can be issued from a color printer without changing a monochrome, text-based application. The printer generates background image data by laying out multiple copies of unit image data representing a unit image used to build the background pattern, and then applying a filter. When print data is sent from the terminal, the printer adds this background image data to the print data to produce the print data with an embedded background image. The print data with embedded background image is then printed to receipt.

Abstract: An electronic blasting system in which the electronic detonator, when attached to a blasting machine or logger, automatically senses and determines whether it is attached to a blasting machine or a logger, preferably by utilizing a different operating voltage for the blasting machine versus that of the logger, with the detonator being capable of distinguishing the respective operating voltages.

Abstract: Projectiles or war-heads with an inner arrangement for the formation of bulging zones (4,4a) are proposed, comprised of an enclosed bulging medium (1) which is terminal-ballistically substantially ineffective and is radially enclosed by a penetration material (2) which is terminal-ballistically effective, with the bulging medium (1) having a lower density as compared with the enclosing penetration material (2). This leads to the effect that on impact or on penetrating a target plate (3) the bulging medium (1) remains behind relative to the encompassing terminal-ballistic effective body (2) and is laterally increasingly bulged by the bulging material (1) which continues to flow in from behind. As a result of the high pressures, a conical (crowned) pressure and bulging zone (4,4a) is formed dynamically, which zone radially widens or fragments the passing ambient effective material (5,5a).

Abstract: Assembly of a gas generator 10 includes the step of adding uncured silicone to a propellant cup 25. Granulated oxidizer is then added over the top of the silicone and allowed to disperse therein. Afterwards, the silicone is cured to provide flush communication with an inner wall 14 of the propellant cup 25. Other granulated gas generant constituents may be added as well. A gas generator 10 assembled in this manner provides more predictable burn rates of a gas generant composition 26 and therefore more predictable performance of the gas generator 10.

Abstract: A single-piece flexure and flexure apparatus according to an embodiment allows movement along two perpendicular axes. The flexure is made from a single continuous material having a first and second flexure sections, with the second flexure section allowing translational movement in a direction perpendicular to that allowed by the first flexure section. Two-dimensional flexure assemblies may then be manufactured using these flexures. The flexure apparatus is made from a single contiguous material fashioned to provide a base section and a plurality of legs extending perpendicularly from the base section, with each leg having a first and second flexure sections, with the second flexure section allowing translational movement in a direction perpendicular to that allowed by the first flexure section.

Abstract: A fluidized bed incinerator having a combustion furnace includes first to fourth combustion sections. Fuel is supplied to the first combustion section and an combustion exhaust gas is exhausted after the fourth combustion section. First to fourth airs are supplied to the first to fourth combustion sections in first to fourth air surplus rates, respectively. The second air surplus rate is equal to or more than the first air surplus rate, the third air surplus rate is equal to or more than the second air surplus rate, and the fourth air surplus rate is equal to or more than the third air surplus rate.

Abstract: An adjustable device installed at the inlet of conventional junctions/splitters (116) for on-line control of the distribution of coal among the outlet pipes is herein disclosed. The device includes a plurality of flow control elements (60) each positioned upstream of a plurality of flow channels in the riffler (50) for directing coal flow to the outlet pipes. Each flow control element preferably comprises a rounded convex edge leading to straight tapered sides (FIG. 9). The surfaces of the sides may be roughened or textured (63) for promoting turbulent boundary layers (FIG. 9). In addition, conventional fixed or variable orifices may be used in combination with the flow control elements for balancing primary air flow rates. The device allows fine-adjustment control of coal flow rates when used in combination with the slotted riffler, yet it has negligible effect on the distribution of primary air.

Abstract: A modified mast and keel system for a sailing vessel. The mast is gimbaled to the hull, so that it can move in a pitch roll. A downward extension of the mast pivotally connects to a winged keel. An aft strut also pivotally connects to the hull and pivotally connects to the winged keel. The hull, the mast extension, the winged keel, and the aft strut combine to form a traditional four bar linkage which is used to adjust the angle of attack of the winged keel with respect to the vessel. The winged keel moves with the mast in pitch and roll. It also includes a hydrofoil having an angle of attack which can be changeable in response to the pitching of the mast. This hydrofoil thereby generates downforce which counteracts the lifting forces created by the mast. It also creates lateral forces to counteract the sideslip of the vessel.

Abstract: A ship designed to achieve high speed through the use of multiple, low wave-making resistance, submerged hullform pods is constructed for stable operation during maneuvers with and without a payload. Movable fins on the submerged hullform pods are constructed and are operable to provide the turning and to counteract an inertial moment produced by an elevated center of gravity of the ship so that the ship turns flat or rolls into a turn and does not roll out of a turn. A load balancing pod is movable fore-to-aft and side-to-side to balance the amount and the location of varied payloads on the ship. The movement of the fins may be a tilting movement, or each fin can be maintained at a set angle but extendable out of and retractable into a related pod to create the amount of side force needed for maneuvers and/or to control the amount of lift that might be needed during operation of the ship.

Abstract: A friction reducing ship reduces frictional resistance between the external hull plate 1 and water W by ejecting air A from the external hull plate 1 into water W to generate micro-bubbles B on the surface of the external hull plate 1. A structural feature of the ship is that micro-bubbles B are generated by creating a negative pressure region in the water W admitted in the water intake opening 2a, disposed below the waterline WL in the bow section 1a, so as to eject atmospheric air above the water into the water to generate micro-bubbles B, and discharging the micro-bubbles B together with water to the water discharge opening 2b provided in the bottom section 1b.

Abstract: A series of foils with air or gas injection at their tips are arranged in rows that project outward from the forward submerged section of a ship, boat or submerged hull section. The foils are arranged in single or multiple rows with tip height set to provide suitable bubble injection into the boundary layer surrounding the moving hull surface. The foils can be arranged in single or multiple strips along the hull depending on the amount of air/gas injection.

Abstract: The invention relates to a method and an arrangement for shipping a reel (1) onboard a ship (2) where the reel (1) is at least partly placed into a cargo space (3) of the ship. The arrangement comprises a reel holder (4), which holds the reel (1) placed therein substantially in position at least in the horizontal and downward direction, and the reel holder (4) is arranged onto a tweendeck (5) in the ship's cargo space (3) that is placed at a distance from the bottom (6) of the ship's cargo space, closer to the metacentre of the ship (2) than to the bottom (6) of the ship. The invention also relates to a tweendeck to be used as a transport support for the reel (1) in sea transport and to a tweendeck arrangement in the ship's cargo space (3).

Abstract: A fold out seat assembly is attached to a support structure having a substantially vertical mounting surface. The seat assembly comprises two sections: a backrest that is fixedly attached to the mounting surface above the seat assembly, and a seat unit that is movable from a vertical stored position against the mounting surface to a horizontal seating position the major portions of which are detachable from the mounting surface when not needed.

Abstract: A self-supporting boat cover includes a cover member having a plurality of sleeves that extends substantially longitudinally from a bow end of the cover member to a stern end. A corresponding plurality of flexible poles are insertable in the sleeves through either end of the sleeves and are releasably securable in the sleeves. The self-supporting boat cover is easily installed and inexpensive to manufacture. Additionally, the flexible poles can be readily disassembled into a plurality of pole sections into a compact and easily transportable configuration.

Abstract: An equipment flagging device. The equipment flagging device is made up of a generally square shaped planar sheet of material and a cord with a first end, a second end and an elongated body. The first end is attached to the generally square shaped planar sheet of material and the second end forms a closed loop, which is used as part of a slipknot to secure the equipment flagging device to any extending equipment or material.

Abstract: The present invention discloses an indicator or numbering device for keeping track of the number of vitamins/medicine pills that one has taken. The present invention comprises a circular cover disk having a circular base plate disposed therein which plate is attached to the top of a medicine bottle, along with an indicator disposed between the cover disk and the base plate whereby the cover disk has an aperture therein which permits viewing of the days of the week which are stamped onto the top of the circular base plate. The indicator operates rotatably between the cover disk and the base plate to indicate the number of medications taken on a given day. The present invention may utilize a two-sided, adhesive strip for attachment of the circular base plate to the top of a medicine bottle.

Abstract: A component of a plasma reactor chamber for processing a semiconductor workpiece, the component being a monolithic ceramic piece formed from a mixture of yttrium aluminum perovskite (YAP) and yttrium aluminum garnet (YAG) formed from a mixture of yttria and alumina powders, the ratio the powders in said mixture being within a range between one ratio at which at least nearly pure yttrium aluminum perovskite is formed and another ratio at which at least nearly pure yttrium aluminum garnet is formed.

Abstract: A method of physical vapor deposition includes selecting a target material; mixing at least two gases to form a sputtering gas mixture, wherein a first sputtering gas is helium and a second sputtering gas is taken from the gases consisting of neon, argon krypton, xenon and radon; forming a plasma in the sputtering gas mixture atmosphere to sputter atoms from the target material to the substrate thereby forming a layer of target material on the substrate; and annealing the substrate and the deposited layer thereon. An improved physical vapor deposition vacuum chamber includes a target held in a target holder, a substrate held in a substrate holder, a plasma arc generator, and heating rods. A sputtering gas feed system is provided for introducing a mixture of sputtering gases into the chamber; as is a vacuum mechanism comprising at least one turbomolecular pump for evacuating the chamber to a pressure of less than 16 mTorr during deposition.

Abstract: The present invention provides methods for exposing an avian embryo to light during incubation. The methods may be used to increase a bird's weight, increase muscle weight in a bird, and decrease the mortality rate of a bird.

Abstract: A liner for use with a teat cup having a rigid hollow shell having a central aperture is shown. The liner comprises a teat chamber having an opening which extends axially therethrough and terminates in a distal end and which has an axial length greater in length than a length of a teat terminating in a distal tip which is to be inserted into the teat chamber. The liner includes a transition chamber having an axially extending reducing inner passageway which has an inlet contiguous to and communicating with the opening in the distal end. The transition chamber defines thereon a circumferentially extending cuff member configured to be passed through a central aperture in a shell and to them surround and urge the cuff member against a shell. A milk tube communicates with the outlet of the transition chamber.

Abstract: A method is provided for producing prey organisms such as Artermia and rotifers, for feeding aquacultural organisms in particular at the larval stage. The method comprises cultivating the prey organisms during at least part of their life cycle in an aqueous medium comprising at least one lipid component having a DHA content of at least 30 wt %. The enriched prey organisms preferably have a DHA content of at least 12 wt % of their total lipid content. The prey organisms are suitable feed for larvae of fish including halibut, turbot, bass, and flounder, and crustaceans and molluscs.