Abstract: In a pool filter with a filter for filtering the water of a pool including in a housing, a filter structure is rotatably supported off-center so that it is arranged at one side in close proximity to the housing wall and at the opposite side a housing space is formed in which at least one nozzle tube is arranged with nozzle openings directed toward the filter structure for washing off deposits from the filter. A pool water inlet is connected to filter housing bottom wall in the area of the housing space and a return pipe is connected to the bottom wall in communication with a center passage of the filter structure so that pool water can be circulated through the filter structure. The inlet pipe includes a valve for blocking the water flow and a drain opening for draining water during filter cleaning.

Abstract: Disclosed is a ballast water treatment system to remove or eradicate various aquatic organisms or microbes remaining ballast water. A water treatment tube manufactured in a filter type is primarily installed to apply physical shock to aquatic organisms having the size of 50 ?m or more by modifying the flow of the ballast water to remove or damage aquatic organisms, so that the life power of the aquatic organisms is weakened. Secondarily, a high efficiency electrolysis device employing dual negative electrodes is installed to generate chlorine, so that the remaining aquatic organisms or remaining microbes are completely eradicated. In order to completely eradicate ocean organisms, the ballast water treatment system includes a neutralizing device capable of returning the ballast water to the similar natural sea water by processing remaining chlorine components excessively produced.

Abstract: Methods and systems for reducing a redox active contaminant in a waste stream in a waste treatment system involve performing a unit process of the waste treatment system by contacting redox active contaminant in the waste stream with oxyhydrogen-rich gas generated on-site by an oxyhydrogen gas generator that implements water dissociation technology. The oxyhydrogen gas generator involves applying a pulsed electrical signal to a series of closely spaced electrodes that are submerged in the waste stream to produce oxyhydrogen-rich gas from a water component of the waste stream. Operation of the oxyhydrogen gas generator in the waste stream may accomplish one or more unit processes for waste treatment, such as oxidation, stripping, floatation, disinfection, conditioning, stabilization, thickening, and dewatering, among others.

Abstract: A method and system for reversibly converting water between an initial ionic strength and an increased ionic strength, using a switchable additive, is described. The disclosed method and system can be used, for example, in distillation-free removal of water from solvents, solutes, or solutions. Following extraction of a solute from a medium by dissolving it in water, the solute can then be isolated from the aqueous solution or “salted-out” by converting the water to a solution having an increased ionic strength. The solute then separates from the increased ionic strength solution as a separate phase. Once the solute is, for example, decanted off, the increased ionic strength aqueous solution can be converted back to water having its original ionic strength and reused. Switching from lower to higher ionic strength is readily achieved using low energy methods such as bubbling with CO2, CS2 or COS.

Abstract: A countercurrent tank type supercritical water reactor with a sacrificial lining, comprising a cylinder body and a catalyst tank arranged inside, the upper part of the cylinder body is connected with a top cover, and the lower part of the cylinder body is connected with a spherical head, the inner side of the cylinder body, the inner side of the spherical head and the inner side of the top cover constitute the inner wall of the reactor, wherein the inner wall of the reactor is provided with a high temperature resistance and thermal insulation coating layer, the inner wall of the high temperature resistance and thermal insulation coating layer is provided with a sealing coating layer, and the inner wall of the sealing coating layer is provided with the sacrificial lining. The reactor is of a countercurrent tank type, which can prevent the reactor blockage caused by salt deposition.

Abstract: The present invention relates to a magnetic fluid filter device and, more specifically, to a magnetic fluid filter for removing ferro-magnetic particles from a fluid in addition to filtering the fluid. The magnetic fluid filter includes an upper end cap having a centrally located aperture, a lower end cap, a filtering material, and a magnet, for removing ferro-magnetic particles from the fluid, integrally attached to a top surface of the upper end cap wherein the fluid is effectively exposed to a magnetic flux of the magnet before entering the filtering material. The magnet is annular or ring-shaped and substantially coaxially located with respect to the aperture. An additional second magnet is attached to a bottom surface of the lower end cap.

Abstract: A lightweight protection element and filter of the mattress type comprises an external containment structure (10, 20), a three-dimensional internal structure (30) with a high cavity index and a granular filler material which is inserted inside the containment structure. Engagement means (50, 52) of the mechanical type are distributed over the external containment structure in order to engage predetermined portions of those structure with each other.

Abstract: Provided is a filtering apparatus having a fixed-type chaos-flow inducer that saves energy as well as sufficiently washes a separation membrane in an environment of high concentration by efficiently generating chaos flow by using a structure of a fixed type.

Abstract: A disc filter for dewatering cellulose fibre suspensions comprising disc-shaped filter elements (11) carried by a rotor shaft (7) in order to rotate inside a vessel (2) while being partly immersed in a suspension received in the vessel. Each filter element comprises several filter sectors (12) distributed about the rotor shaft. Loosening members (25) are provided for loosening fibre material that has been filtered out of the suspension and deposited on a filtering lining (13) of the respective filter element. Receiver chutes (30) are located in the part of the vessel where the filter sectors (12) are rotated down into the suspension from a position above the suspension. The receiver chutes receive loosened fibre material together with flushing liquid from cleaning members (26) located above the receiver chutes to thereby allow the fibre material to be diluted in the receiver chutes to a desired dry content by means of this flushing liquid.

Abstract: There is provided a nanofiltration-type thin film composite forward osmosis membrane comprising a rejection layer including intrinsic separation properties; and a substrate for support of the rejection layer, the substrate comprising a porous sub-layer having long finger-like pores and a thin sponge-like skin layer. A method for synthesizing the nanofiltration-type thin film composite forward osmosis membrane is also provided.

Abstract: A two-layered osmosis membrane contains a support layer and a rejection layer. The support layer, in which a mesh is embedded, is made of a phase separation polymer and has a thickness of 50 to 200 ?m. The rejection layer, which adheres to the support layer, is made of a thin film composite polymer and has a thickness of 0.05 to 3 ?m. The mesh, which is embedded in the support layer, has an open area of 30 to 70%, a mesh size of 60-300 mesh, and a thickness of 45-150 ?m. Also disclosed is a method of making the above described membrane.

Abstract: A carbon block filter with UHMWPE binders and activated carbons and the method are provided. The method comprises: pulverizing ultrahigh molecular weight polyethylene (UHMWPE) binders with an average particle size of 120˜140 ?m, serving as original binders, and separating binders with a granularity of 20˜80 ?m from the original binders; mixing the separated binders with the original binders; and forming a carbon block filter by mixing commercial, powdered activated carbons, with the mixed binders. The mixing of the separated binders with the original binders and the forming of the carbon block filter control the powdered activated carbons and the adjusted, UHMWPE binders so that the cumulative granularity ratio of them is 1:0.78˜1.1, with respect to a particle size equal to or less than 105 ?m.

Abstract: Product formed from a ceramic material, at least part of the said product not being formed from amorphous silica and including pores and satisfying the following criteria (a), (b) and (c): (a) at least 70% by number of the said pores are frustoconical tubular pores extending substantially parallel to each other in a longitudinal direction; (b) in at least one cross-section plane, the mean size of the cross sections of the said pores is greater than 0.15 ?m and less than 300 ?m; (c) in at least one cross-section plane, at least 50% by number of the pores have a convexity index Ic of greater than 87%, the convexity index of a pore being equal to the ratio Sp/Sc of the surfaces Sp and Sc delimited by the perimeter and by the convex envelope of the said pore, respectively.

Abstract: A process for decontaminating water contaminated by emergent pollutants or micropollutants, includes a step of injecting the contaminated water into a device having a vertically filtering planted organic filter, which planted organic filter includes: an inlet for the contaminated water; an outlet for treated water; filtration and decontamination elements interposed between the inlet and the outlet, characterized in that the filtration and decontamination elements take the form of a planted organic substrate composed of a compost and insoluble aggregates, making it possible for the organic substrate to maintain a permeability of at least 40 litres per hour per m2, preferably at least 70 litres per hour per m2 and particularly preferably at least 100 litres per hour per m2. A device for decontaminating water contaminated by emergent pollutants or micropollutants is also described.

Abstract: An advanced water treatment method processes a continuous flow of water in a sequence of stages including pre-filtering [200] to remove solids, conditioning [202] to adjust pH, blending [210] with a recycled dense microalgae culture, and passing the resulting mixture through an enclosed, environmentally-controlled photobioreactor [212] where nutrients, PCB's, trace metals and other pollutants and regulated compounds are taken up by the algae. The flow from the PBR is separated using cross-flow filtration [222] to produce a treated water flow and a dense microalgae flow that is recycled to the blending stage [210] upstream. Thus, whereas the algae is recycled, the water entering the system is treated by flowing sequentially through the stages of the system, without any recycling or repetition of treatment stages. A pig-type cleaning system is also provided.

Abstract: In a water treatment method, raw water supplied from a water supply reservoir for reserving the raw water is biologically treated by a biological treatment means before being supplied to a primary pure water apparatus. Thereafter, urea or a urea derivative and/or an ammoniacal nitrogen source (NH3—N) are added before the biological treatment means. In such a treatment flow, it is preferred that a reduction treatment means is provided after the biological treatment means and before the primary pure water apparatus. According to the water treatment method, the TOC, in particular urea, in the raw water can highly be decomposed.

Abstract: A Class B biosolids sludge digestion process whereby feed sludge is introduced to a completely-mixed, continuously- or intermittently fed and drawn, sealed, anaerobic digester, and sludge is drawn off at a rate such that the average mean cell residence time for the sludge in the digester is greater than or equal to 10 days, and less than 15 days. The temperature of the sludge is maintained in the thermophilic range to produce treated sludge having: a volatile solids content that is at least 38% less than the volatile solids content of the feed sludge, a reduced fecal coliform content that is at least a 2 log (base 10) reduction from the feed sludge, and where there is no more than 2,000,000 most probable number/gram total solids (dry weight basis) of fecal coliform in the treated sludge.

Abstract: A module for use in a membrane bio film reactor is described, and systems comprising such modules are described. The module comprises a fabric formed from a sheet of hollow-fiber membranes and a spacer material situated between adjacent membrane sheets, which are wound around a central core tube in the module.

Abstract: A fluid conduit with layered and partial covering material thereon is disclosed. The fluid conduit may be used for processing and treatment of fluids which must be treated to remove materials so that the resultant treated fluid may be reused and/or returned to the earth and particularly to the water table. The fluid conduit may be of many forms and types and may have attached thereto and configured thereon covering material in partial form and a selected number of layers. The fluid conduit may be a septic pipe of smooth wall, of corrugated form, and/or of any form of cross-sectional configuration including circular, elliptical, rectangular, triangular, or any other geometric shape. The fluid conduit may be used in combination with conduit in a drainage field or leaching system usually associated with a septic tank or septic system.

Abstract: The present invention refers to a device, comprising a hollow body having at least one open end and at least one barrier inside or at the end of the hollow body, which is non-permeable for liquids and solids under ambience conditions, however, becomes liquid-permeable by applying an external force like pressure, drag force or driving power to said barrier, the use of such a device for collection, storage, treatment or isolation of a biomolecule or biomolecules containing samples, a method for preparation of said device and a method for isolation or purification of any biomolecules using said device.

Abstract: A desalination device that uses the natural and constant static pressure of the ocean depths to cause seawater to push against a reverse osmosis membrane with sufficient force to separate the molecules of water and salt. The resulting water, the permeate, is pumped to the surface using normal subsurface pumps.

Abstract: In one aspect, the invention relates to engineered osmosis and related membrane-based separation technologies. Disclosed are semi-permeable nanostructured osmosis membranes comprising a film polymerized on a nanofiber support fabric, methods for osmotically-driven separation, the method comprising creating an osmotic pressure gradient across a semi-permeable nanostructured osmosis membrane comprising a film polymerized on a nanofiber support fabric, and methods of generating power comprising creating an osmotic pressure gradient across a semi-permeable nanostructured osmosis membrane comprising a film polymerized on a nanofiber support fabric. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Abstract: The invention relates to a sorption agent for removing endotoxins from a biological fluid, comprising a water-insoluble, porous carrier having a neutral hydrophobic surface wherein the surface of the carrier has an adsorptive coating made of polymyxin and albumin, wherein polymyxin and albumin are bonded to the surface of the carrier in a noncovalent manner. The invention further relates to a method for producing such a sorption agent. The sorption agent is used in extracorporeal blood purification, in particular in order to treat individuals, who have sepsis.

Abstract: New magnetic dye-adsorbent catalyst has been described in this invention, which is the modification of conventional magnetic photocatalyst. The catalyst consists of a composite particle having a core-shell structure, with a magnetic particle as a core and a dye-adsorbent (which may also exhibit photocatalytic activity) as a shell. The shell is made up of 1-dimensional (1-D) nanostructure, which enhances the specific surface-area of the conventional magnetic photocatalyst. The new magnetic dye-adsorbent catalyst removes an organic dye from an aqueous solution via surface-adsorption mechanism; while, the conventional magnetic photocatalyst uses the photocatalytic degradation mechanism.

Abstract: The invention relates to a method for removing ammonium nitrogen from organic waste water comprising liquid manure, which method comprises the steps of applying waste water with a high content of ammonium to an organic, synthetic ion exchanger and allowing ammonium to adsorb to the ion exchanger.

Abstract: A capsule for encapsulating ion exchange chemicals has a capsule body, including a surface layer and ion exchange chemicals encapsulated within said surface layer. An ion exchange media is created by encapsulating liquid ion exchange chemicals inside a polymer coat making small beads which behave as solids but have much higher exchange capacity. The improved capacity is up to twice that of existing media.

Abstract: There are provided a composite including a metal component supported on graphene, a preparing method of the same, and uses of the same. The composite may be used for removing a contaminant.

Abstract: The present invention provides a method for removing phosphorus and nitrogen contained in sewage or wastewater using iron ore wastewater. According to the method of the present invention, in which the phosphorus and nitrogen contained in sewage or wastewater are crystallized in the form of struvite using iron ore wastewater containing a large amount of Mg2+ produced in a process of upgrading low-grade iron ore and removed, it is possible to reduce the cost of Mg2+ and the cost of iron ore wastewater treatment, thereby earning economic profits. Moreover, it is possible to prevent water pollution by the removal of the phosphorus and nitrogen contained in sewage or wastewater. Furthermore, it is possible to use struvite crystals obtained as a by-product as a time-release compound fertilizer so as to reduce the amount of fertilizer used and the number of fertilizations, thereby reducing soil contamination.

Abstract: A method for clarifying a wine sediment. The method steps include providing a solid-wall worm centrifuge, clarifying the wine sediment in the centrifuge by forming a solid phase and a liquid phase, and fining the sediment by adding a fining agent at one or both of before and during the centrifugal clarification.

Abstract: Systems and methods for controlling chlorinators for pools and spas are provided. A controller communicates with a processor positioned within a replaceable cell cartridge of a chlorinator, to allow for remote control and diagnosis of the chlorinator and/or cell cartridge. The cell cartridge stores, in non-volatile memory on board the cartridge, one or more parameters associated with the cartridge. The controller can obtain this information from the processor of the cell cartridge, and can use same to configure operation of the chlorinator. Information relating to remaining cell life can be updated by the controller and stored in the non-volatile memory of the cell cartridge. Electrical and software-based mechanisms are provided for ensuring operation of only compatible cell cartridges with the chlorinator. A system for remotely diagnosing errors associated with the chlorinator is also provided.

Abstract: An oil filtration system for a load tap changer includes a filter configured to filter oil, a pump fluidly coupled to an oil tank and configured to pump the oil from the oil tank through the filter and to return the oil to the oil tank, and a control system, electrically coupled to the pump. The control system monitors ambient air temperature and controls an operation of the pump in accordance therewith. Additionally or alternatively, the control system monitors at least one of a high-pressure sensor, a flow sensor, a leak sensor, and a low flow sensor and controls an operation of the pump in accordance therewith.

Abstract: A water purification device is provided in the form of a hydrogel matrix containing immobilized nanoparticles that are directly synthesized in-situ in the hydrogel matrix. A related method of decontaminating the water supply contaminated with a target pollutant is also disclosed.

Abstract: An evaporative recirculation cooling water system, the system having a recirculation loop to recirculate water through the system, a space to cool the water in the recirculation loop by evaporation, and an ion removal apparatus to remove ions. The ion removal apparatus has a flow through capacitor to remove hardness ions while leaving silica ions in the water. The flow through capacitor has an inlet connected to a water inlet and an outlet having a regulator to direct the flow of water to the recirculation loop or to a waste water output.

Abstract: The present invention relates to antifreeze/anticorrosion concentrates comprising from 10 to 50% by weight, based on the total amount of the concentrate, of glycerol, to processes for preparing such concentrates from super concentrates, to aqueous coolant compositions from these concentrates, and to their use, for example in internal combustion engines.

Abstract: A water treatment unit includes a mixing chamber surrounding the upper end of a riser containing an impeller, Water can be moved from a body of water up through the riser, and out through laterally directed openings into the chamber adjacent to an air inlet, The water moving out the laterally directed openings of the stand pipe, mixes with air drawn in through the air inlet to oxygenate the water, and the oxygenated water exits the chamber into the body of water through one or more water outlets in the lower portion of the chamber due to the head developed by the inflow of water into the chamber. The outward flow of water from the chamber can cause a toroidal or other desired flow of water within the body of water surrounding the water treatment apparatus.

Abstract: A three-stage separator system for separating the solids and liquids from a slurry includes a first stage having an inclined housing defining a liquid channel. A slot sieve is disposed over an open surface of the channel. A mechanical vibrator assembly imparts mechanical vibration to a vibration zone of the slot sieve. A slurry delivery apparatus delivers the slurry to the slot sieve. A second stage includes an inclined conveyer positioned to convey partially-separated solids and includes a drive mechanism driven at a speed to cause the partially-separated solids to tumble as they are transported up the conveyor. A third stage includes a press positioned to accept partially-separated solids passing out of the tunnel press restrictor.

Abstract: A wastewater treatment system includes wastewater having nitrogen-containing compounds, an anoxic zone having denitrifying bacteria, and an aerobic zone having nitrifying bacteria. The anoxic zone is coupled to the aerobic zone, and wastewater flows from the anoxic to the aerobic zone or vice versa. A fluidized bed heat exchanger configured to accept heat from a heat engine and to transfer the heat from the heat engine to the wastewater is positioned in the aerobic zone or the anoxic zone. The fluidized bed heat exchanger includes particulate media, and fluidization of the particulate media scrubs bacterial growth from portions of the fluidized bed heat exchanger. Treating wastewater can include flowing wastewater having nitrogen-containing compounds into a biological reactor having an anoxic zone and an aerobic zone, and heating the wastewater with heat from a heat engine to facilitate denitrification reactions in the anoxic zone and nitrification reactions in the aerobic zone.

Abstract: A filter module (1) for disposable use with a closed and at least partially flexible, preferably expandable casing (3) as filter housing (2), a non-filtrate space (9) within the closed casing (3) and at least one first opening (10) through the casing (3) to the non-filtrate space (9), at least one second opening (8) for conducting the filtrate away through the casing (3) and one or more disc-like filtering elements (14) which are accommodated in the casing (3) and the interior of which is connected to the second opening (8), wherein a negative pressure in relation to the normal atmosphere of the surroundings prevails within the casing (3).

Abstract: An apparatus for separating solids from solids laden drilling fluid is provided. The apparatus includes a shale shaker and a screen assembly. The shale shaker includes a base and a basket isolated from the base, a flow tray arranged in the basket for directing screened drilling fluid. The screen assembly includes at least one layer of screening material, a screen support having a perimeter with at least one support point within the perimeter, wherein the flow tray includes at least one raised portion to support the screen assembly. In some versions the shale shaker has a basket having side supports and at least one intermediate support arranged between the side supports. The screen assembly includes a screen support supporting at least one layer of screening material.

Abstract: A separator for separating solids and liquids from slurry includes a housing defining a liquid channel and oriented at an acute angle such that a top end is positioned higher than a lower end. A slot sieve extends between and supported at opposing side edges of the housing and is suspended above the liquid channel, the slot sieve including a vibration zone and at least one reaction zone. A slurry delivery apparatus positioned to deliver slurry to the top end of the slot sieve. A liquid removal conduit fluidly coupled to the bottom of the liquid channel. A mechanical vibrator assembly is coupled to the vibration zone of the slot sieve to directly impart mechanical vibration to the reaction zone of the slot sieve and to couple the mechanical vibration to the at least one reaction zone of the slot sieve to dislodge solids from slots of the slot sieve.

Abstract: A water filter including a housing, at least one cylindrical filter component disposed within the housing, an inflow pipe extending through, and parallel to a longitudinal axis of, the at least one cylindrical filter component, the inflow pipe including a series of openings arranged along the length of the inflow pipe so as to cause a cyclonic motion of the contaminated water out of the inflow pipe and into contact with the at least one cylindrical filter component, a first outflow pipe that delivers filtered water from the at least one cylindrical filter component, and a second outflow pipe that delivers contaminants from the at least one cylindrical filter component.

Abstract: A backwash header for a cloth filter disk includes a body having a length a diameter, first and second ends, a longitudinal axis, and an exterior surface, the body defining at least one internal cavity. The body includes at least one suction slot configured to allow fluids and solids to enter the internal cavity from outside of the exterior surface. A structure is attached to a portion of the exterior surface of the body around and extending away from the suction slot to form a chamber defined by the structure and a portion of the exterior surface near the suction slot. The structure is configured to allow fluids and solids to enter the chamber and then the suction slot and cavity from a material being cleaned. Cloth disk filters and methods of treating water and wastewater using the backwash headers and cloth disk filters.

Abstract: A debris filtering apparatus and method. The apparatus includes a first filter assembly. The first filter assembly includes an outer conduit and an inner conduit received within the outer conduit. An inner conduit flow-path is defined within the inner conduit and an outer conduit flowpath is defined between the inner conduit and the outer conduit. The inner conduit includes a filter. A fluid inlet is in communication with the inner conduit flowpath and a fluid outlet is in communication with the outer conduit flowpath. The filter permits a fluid to pass between the inner conduit flowpath and the outer conduit flowpath while retaining debris within the inner conduit. The method includes passing the fluid through the first filter assembly, removing the inner conduit from within the outer conduit, removing the debris from the inner conduit, and replacing the inner conduit within the outer conduit.

Abstract: A fluid deionizer includes at least one graphene sheet perforated with apertures dimensioned to allow a flow of fluid and to disallow at least one particular type of ion contained in the flow of fluid. A purge valve is placed in an open position so as to collect the at least one particular type of ion disallowed by the graphene sheet so as to clean off the at least one graphene sheet. Another embodiment provides a deionizer with graphene sheets in cylindrical form. A separation apparatus is also provided in a cross-flow arrangement where a pressurized source directs a medium along a path substantially parallel to at least one sheet of graphene from an inlet to an outlet. The medium flows through the plural perforated apertures while a remaining portion of the medium and the disallowed components in the medium flow out the outlet.

Abstract: A display lock system and display lock used therein are provided. The display lock system includes a display hook having a display lock attached thereto. The display lock includes a lock body attached to a bar of the display hook and a lock bar that surrounds a second bar of the display hook. A lock arrangement operates between the lock body and the lock bar to selectively permit and prohibit movement of the lock bar relative to the lock body.

Abstract: A security product display hook assembly comprising a unique form of product display hook, in combination with a security lock, providing optional levels of product security and customer convenience. The display hook has a merchandise supporting arm formed with a back section, an intermediate section and a front section. The intermediate section is of sharply irregular configuration to allow, but inhibit, product removal, while effectively preventing mass product removal often attempted by shoplifters. The locking device is positionable in front of or directly behind the intermediate section to provide the highest security, with all products locked or an intermediate level, with a portion of the products locked. The locking device can also be positioned at the back of the back section such that all products are unlocked and available for customer selection.

Abstract: A modular assembly for supporting fiber optic splices includes a tray, cradle, and splice holder. The tray includes a floor, a depression in the floor, and a tab that extends outward from a depression sidewall into the depression. The cradle includes a base configured to be seated in the depression. The cradle base has a first face positioned away from a bottom of the depression and an opposite second face positioned towards the depression bottom when the cradle base is seated in the depression. The cradle base also includes a shelf recessed into the first face at the first side of the cradle base, and positioned between the depression bottom and the tab when the cradle base is seated in the depression. A splice holder is mounted to the first face of the cradle base and defines a plurality of fiber optic splice slots positioned over the depression.

Abstract: A system of outer supports for in vacuum girders driven by two lead screws, supported at the approximate quarter points and a second set of less massive in vacuum girders. The embodiment of the design is comprised of two spherical joints, outer holds bellows, inner threads into the girder, and split coupling. This invention makes changing bellows easier, allowing for bellow replacement without disturbing magnet shimming. This system provides the overall rigidity necessary to maintain the required straightness and flatness of the magnet modules over a range of magnet gaps and varying attractive magnetic forces.

Abstract: A fixing device for fixing a data storage device includes a rack, a fixing member, and a resilient member. The rack includes a bottom plate and two tabs protruding from the bottom plate. Two first pins respectively extend from the tabs to engage in two corresponding holes defined in a first sidewall of the data storage device. The fixing member is slidably mounted on the bottom plate along a direction perpendicular to the tabs. A second pin protrudes from the fixing member to detachably engage in a locking hole defined in a second sidewall of the data storage device. The resilient member is resiliently sandwiched between the rack and the fixing member, to bias the fixing member to move towards the data storage device, thereby making the second pin engage in the locking hole.

Abstract: A collapsible dish drying rack is provided. A plurality of shaped wires is rotatably mounted on two arms attached to a pivotable first wire support members and on a second wire support member. The first wire support member is pivoted upwardly to raise the shaped wires and pivoted downwardly to lower the shaped wire thereby to position the wires between the wire support members in a relatively flat position. An outside surface of the pivotable first support member can function as a cutting board.