Abstract: A mold assembly and a method for injection molding of an impeller, and an impeller formed by the method are provided. The mold assembly comprises a first mold, a central mold, and a second mold. The central mold encircles the first mold, and the second mold matches with the first mold and the central mold to form a mold cavity, complementary in shape to the impeller. The melted plastic material is injected into the aforementioned mold cavity. After the plastic material is cured, the central mold is adapted to enclose the cured plastic material. The cured plastic material is removed from the first mold, and then is removed from the central mold and the second mold to form the impeller. The blade portion of the impeller is radially connected to an edge of a central portion of the impeller. The blade portion has a plurality of blades, equally spaced apart with one another in sequence along the edge. Each of the blades comprises a smooth surface without an ejector pin mark.

Abstract: The invention refers to a coated turbine blade for a gas turbine, having blade walls divided into sections with locally adapted material temperatures. The cooler material temperatures of the blade walls are at the points where the support ribs merge into the blade walls. The regions with higher material temperatures of the blade walls are at the positions where cavities are arranged inside the blade walls. This is achieved via a ceramic thermal barrier coating having different layer thicknesses that allow different material temperatures. The region of the surface of the blade wall which faces the working medium and lies opposite an internal rib has a thicker thermal barrier coating than a region of the surface of the blade wall which is cooled via a cooling medium that flows in the cavities. This results in homogenization of the material temperature in the connecting regions, which results in prolonged blade life.

Abstract: The blade fixing comprises a firtree having a width between two opposite surfaces, each defining a plurality of successive necks separated from one another by arcuate lobes. Each of the opposite surfaces is substantially flat and substantially parallel to the other at the narrowest point of a first one of the necks that is closest to the platform.

Abstract: An improved propeller blade is presented. The improved blade has a slot near the tip. This improved blade outperforms and is more efficient than other modified and unmodified blade tip configurations.

Abstract: The present invention aims to appropriately cool an operation unit and to suppress power consumption and noise according to the configuration and the operation state in a computer system of an enclosure. A plurality of system cooling fans for cooling the operation unit of the computer system installed in the enclosure and an enclosure management module for controlling the rotation of each system cooling fan are arranged, where the enclosure management module stores in advance the supply cooling amount which is to be supplied to the operation unit by each system cooling fan, acquires information related to a temperature of the operation unit and calculates a necessary cooling amount which is to be required in the operation unit based on the information, and determines the rotation number of each system cooling fan based on the supply cooling amount and the necessary cooling amount.

Abstract: A pulley is fixed to a housing of a water pump, the pulley being connected to an output shaft of an internal combustion engine so that the pulley is driven through the output shaft. In the housing, a slider moves to and fro due to a change in pressure in a pressure chamber, which causes the magnetic flux passing through a magnet and an inductor ring of a rotary cylinder to vary, so that the driving force of the internal combustion engine is variably transmitted to the rotary cylinder. The pressure chamber is connected to an intake air passage and an atmospheric air introducing portion through a pressure path, and the state of communication is changed by a VSV.

Abstract: A method of simulating water flow through a shower waste pump which is controllable by a water-flow detector, the method comprising the step of by-passing the water-flow detector with a water-flow simulator device. The in use simulator device simulates the presence of water and thus causes the shower waste pump to operate without the need for water. A water-flow simulator device is also provided.

Abstract: A pump control system for controlling a fluid pump powered by an AC signal. The pump control system includes a signal phase detector coupled to the fluid pump to detect the AC signal supplied to the fluid pump and to generate phase signals indicating a phase parameter of the AC signal. The pump control system also includes a micro-controller to receive the phase signals and to generate a rectified output signal based on the phase signals, and a relay to control the power supplied to the fluid pump based on the output signal of the micro-controller.

Abstract: A variable displacement vane pump, including a pump body, a driving shaft, a rotor, a cam ring swingable on a swing support surface, first and second plate members on opposite sides of the cam ring, a suction port and a discharge port on a side of at least one of the first and second plate members, a seal cooperating with the swing support surface to divide a space on an outer circumferential side of the cam ring into first and second fluid pressure chambers, a fluid pressure control valve, a stop disposed on the pump body on a side of the first fluid pressure chamber and restricting a swing movement of the cam ring, and a detent disposed between the cam ring and the pump body on a side of the second fluid pressure chamber and preventing a rotational movement of the cam ring around the driving shaft.

Abstract: A swash plate compressor (41) is disclosed, wherein a shaft (43) is divided into a rear shaft (45) and a front shaft (47) coupled to each other through a torque limiter (65) with center holes (51, 69) communicating with each other. A lug plate (25) is fixed to the rear shaft (45). Machining of the center holes is thus facilitated while at the same time eliminating the need for rust-proofing of the torque limiter.

Abstract: A digit button-operated air compressor output control structure for controlling output of compressed air from an air compressor by means of a digital control panel and an air pressure regulating structure with internal pressure sensors for enabling the user to set the desired output air pressure quickly and to control the output air pressure stably.

Abstract: A check valve 50 for a vacuum pump 1 is disclosed in which opening of the check valve 50 is controlled by centrifugal force by arranging a valve member 40 to slide along a slide axis Y-Y inclined with respect to an axis of rotation of a housing 27 in which the valve member 40 is slideably supported. The housing 27 rotates with a rotor 10 of the vacuum pump 1 and, in a one embodiment, the slide axis Y-Y is arranged at a right angle with respect to the axis of rotation X-X so as to maximize the effect of centrifugal force on the valve member 40 as the housing 27 is rotated.

Abstract: A pump assembly for an inflatable structure comprises a blower unit disposed in a housing configured to move air in a single direction from an inlet in the housing to an outlet in the housing. A connector is in communication with the housing outlet. The connector is adapted to connect the pump assembly to an inflatable structure to allow inflation and deflation of the inflatable structure. A base is provided with first and second valve bodies positionable in the base for selective movement between inflate and deflate positions. The first valve body aligns the housing outlet in communication with the connector and the second valve body aligns the housing inlet with atmosphere in the inflate position. The second valve body aligns the connector in communication with the housing inlet and the first valve body aligns the housing outlet in communication with atmosphere in the deflate position.

Abstract: A motor according to the present invention includes a boss portion 34 preferably includes an inner ring portion 342 having at an axially lower end surface thereof a substantially ring shaped convex portion 3421. The boss portion 34 preferably includes at a central portion thereof a through hole at which a shaft 32 is press fitted. A rotor holder 31 having a substantially cylindrical shape includes a through hole 321 centered about a rotary axis. The through hole 321 and the inner ring portion 342 of the boss portion 34 are fitted to one another. The convex portion 3421 includes a portion plastically deformed outwardly in the radial direction so as to sandwich an inner circumferential surface 3211 of the rotor holder 31. The inner circumferential surface of the impeller cup portion 22 includes a plurality of convex portions 221 near an upper portion thereof. The rotor holder 31 is press into the inner circumferential surface of the impeller cup portion via the convex portions 221.

Abstract: A reciprocating compressor comprises a casing including a suction pipe (SP) through which a fluid is introduced from the outside and a discharge pipe (DP) through which the fluid is discharged outside and forming a predetermined internal space; a compressor main body (700) positioned in the casing (100), compressing the fluid introduced through the suction pipe (SP) with a linear reciprocating motion of a piston (420) and discharging the compressed fluid through the discharge pipe (DP); and a supporting unit (600) including a plurality of coil springs connecting the compressor main body (700) to the casing (100), wherein the plurality of coil springs (610, 620) includes, respectively, end coils (590) tightly wound so as to be fixed to one surface of the compressor main body (700) and to one surface of the casing (100) and an inner coil (580) having at least one part which is tightly wound and positioned between the end coils (590), thereby minimizing the lateral vibration of the compressor, which is generated

Abstract: A vacuum pump includes a high-speed rotor, and an anti-friction bearing for rotatably supporting the rotor and including an inner ring, an outer ring, a rolling body, and a cage for the rolling body both the rolling body and the cage being located in an intermediate space defined by the outer and inner rings, with the cage having a threaded groove in a section of its surface adjacent to the inner ring for insuring a continuous feeding of a lubricant to the bearing.

Abstract: The invention provides the arrangement of a resilient and flexible tubular element, with shape memory, which contains the product to be metered and which receives an action of limited compression of the walls thereof, in such a way that there is no contact between the internal walls of the opening of the tubular element which propels the product, in such a way that the product supply and discharge are controlled by respective valves situated before and after the compressible tubular metering element.

Abstract: A diaphragm circulator for liquid material having an internal circuit provided with at least one material intake orifice for discharging the material. The circulator body defines a propulsion chamber with rigid walls between which a deformable diaphragm is placed in such a way that the edge thereof is adjacent to the intake oriface and the edge is adjacent to the discharge orifice for forming a ripple carrier. A diaphragm-exciting member is arranged on the side of the intake orifice for producing a reciprocating motion on the corresponding diaphragm edge in such a way that the ripple is generated and is provided with the circulator rigid walls which are arranged inside free ripple amplitude envelope surfaces extending along the diaphragm.

Abstract: A composite pump comprises multiple fluid pumps, each including a movable component and a crank coupled to the movable component. At least two of the movable components define between them a non-zero included angle.

Abstract: Vapor reducing structure (25) is constructed and arranged to be associated with a fuel pressure regulator (18) of a fuel system (10?) of a vehicle. The pressure regulator has an outlet (28) for fuel that is in excess of fuel required by an engine of the vehicle. The reducing structure includes a fuel accumulator (26) associated with an outlet of the pressure regulator defining a volume in which fuel exiting the outlet of the regulator can accumulate. Flow restricting structure (30?) is associated with the accumulator and is constructed and arranged to create sufficient back-pressure to eliminate vaporization of the fuel exiting the outlet of the pressure regulator.

Abstract: A scroll compressor may include a shell, a bearing housing, first and second scroll members, and a ring member. The bearing housing may be supported within the shell and may include at least three axially extending arms. The first scroll member may be supported on the bearing housing and may include a circumferential outer surface. The second scroll member may be supported on the bearing housing and may be meshingly engaged with the first scroll member. The second scroll member may be disposed between the first scroll member and the bearing housing. The ring member may include an open center portion surrounding the circumferential outer surface of the first scroll member therein. A portion of the ring member may be disposed between the arms of the bearing housing and the circumferential outer surface of the first scroll member.

Abstract: A rotary fluid machine includes an eccentric rotary piston mechanism that is configured such that an annular piston is accommodated in an annular cylinder chamber of a cylinder to form an outer cylinder chamber and an inner cylinder chamber. The cylinder and the annular piston relatively execute eccentric rotary motion. Each of the outer and inner cylinder chambers is divided by a blade into a first chamber and a second chamber. The blade and the annular piston are mutually movably coupled together by a swinging bushing. The blade is provided, in its contact parts with the annular piston and the swinging bushing, with sliding surfaces in order to prevent the occurrence of seizure and wear of the blade and the annular piston and the occurrence of gas leakage between the first chamber and the second chamber during operation.

Abstract: In a compression/expansion unit (30) serving as a fluid machine, both a compression mechanism (50) and an expansion mechanism (60) are housed in a single casing (31). An oil supply passageway (90) is formed in a shaft (40) by which the compression mechanism (50) and the expansion mechanism (60) are coupled together. Refrigeration oil accumulated in the bottom of the casing (31) is drawn up into the oil supply passageway (90) end is supplied to the compression mechanism (50) and to the expansion mechanism (60). Surplus refrigeration oil, which is supplied to neither of the compression and expansion mechanisms (50) and (60), is discharged out of the terminating end of the oil supply passageway (90) which opens at the upper end of the shaft (40). Thereafter, the surplus refrigeration oil flows into an oil return pipe (102) from a lead-out hole (101) and is returned back towards a second space (39).

Abstract: In a gas compressor, a fastener part is fastened by a fastener member comprised of a bolt coated with a zincate bath and a gasket, any leakage from the fastener member is prevented, the gas compressor including a case 11 and a front head 12 fastened by a first fastener member 80, a housing 10 having a holding space in the interior portion, a compressor main body 60 that compresses gas held in the holding space and fastened to the housing 10 by a second fastener member 70, the second fastener member 70 being a fastener member comprised of a bolt 71 coated with a zincate bath in combination with a copper gasket 72 coated with tin.

Abstract: A crankshaft and an mounting hole have two main circular arc parts on the same circle; and two connecting parts for connecting the adjacent main circular arc parts, and have a cross-sectional shape in which the connecting parts facing each other are substantially parallel. The connecting parts of the mounting hole are formed in the shape of a large circular arc which projects inward. The torque of the crankshaft is transmitted to the mounting hole in a state where the connecting parts of the crankshaft and the connecting parts of the mounting hole which are formed in the shape of a large circular arc come into line contact with each other; therefore, the value of any local stress generated in the mounting hole can be reduced.

Abstract: A method for producing a soft magnetic powdered core includes preparing a mixture of a soft magnetic powder and a resin powder, compacting the mixture into a predetermined shape so as to obtain a compact, and heating the compact. The resin powder has a median size of not more than 30 ?m, a maximum particle size of not more than 100 ?m, and a specific surface area of not less than 1.0 m2/cm3, and the additive amount thereof is 0.005 to 2 vol %.

Abstract: “The present invention relates to a method for fabricating parts by an injection molding technique including preparing a feedstock—having at least one powder mixed with a polymer binder solubilized in a solvent, injecting the feedstock into the mold under pressure, debinding, and sintering where the feedstock is maintained at a temperature above a solvent vaporization temperature during the pressing.

Abstract: A method for processing CoPt alloys with improved magnetic properties. The method includes sealing a sample of a CoPt alloy in an evacuated quartz tube, and heating the alloy to a temperature of approximately 1000 degrees C. to homogenize the alloy for approximately 3 hours. The sample is then cooled at a controlled cooling rate of 120-150 degrees C. per minute to 600 degrees C. The sample is then held at 600 degrees C. for 10 hours to promote isothermal ordering. Finally, the sample is quenched in mineral oil.

Abstract: A non-magnetic cobalt based “noble” metal dental alloy is provided. The alloy generally contains at least 25 wt. % palladium, from 15 to 30 wt. % chromium and a balance of cobalt, where to ensure the alloy is non-magnetic the concentration of chromium in the alloy is at least 20 wt. %, or if the concentration of chromium is less than 20 wt. % the combined concentration of chromium, molybdenum, tungsten, niobium, tantalum vanadium and rhenium is greater than 20 wt. %.

Abstract: An alloy for use in jewelry applications is provided that has a composition comprising about 45 to about 55 platinum by weight and about 55 to about 45 percent palladium by weight. The alloy possesses favorable characteristics as compared to pure platinum and pure palladium. Due to these characteristics, the alloy is attractive for use in jewelry applications.

Abstract: An aluminum alloy for a tire mold comprises Mg: 3.0-6.0 mass %, Si: 0.2-4.5 mass % and the balance being Al and inevitable impurities.

Abstract: The invention is an apparatus and methods for optimizing the performance and protecting one or more aerosol generating transducers from deterioration while operating in a chemically reactive aqueous solution by utilizing one or more protective barrier techniques to eliminate chemical interaction between the aqueous solution and the transducers, among other features of the generator including these transducers. The method of the present invention produces an aerosol producing transducer with the transducer housing and assembly to be constructed in such a way as to assure its efficient and effective long-term and problem free operation in an aqueous solution that is chemically reactive.

Abstract: The present invention provides a harmless sterilization method and sterilization apparatus which provide adequate sterilization effects without residual gas. The method comprises: a sterilization step in which a chamber containing an object to be sterilized is depressurized; a hydrogen peroxide supply step in which hydrogen peroxide is supplied into the chamber; an ozone supply step in which ozone is supplied into the chamber; a sterilization step in which the hydrogen peroxide and ozone supplied inside the chamber are dispersed to sterilize the object to be sterilized; an exhaust step in which gas inside the chamber is exhausted; and a plasma generation step in which plasma is generated inside the chamber to break down hydrogen peroxide and ozone remaining near the object to be sterilized, and radicals which promote sterilization are generated.

Abstract: A method for oxidizing and disinfecting liquids including maintaining a reactor under sub-atmospheric pressure conditions; passing liquid within the reactor over a first electrode; and generating a high voltage, short pulse to a second electrode located opposite the first electrode, over the liquid that passes over the first electrode to create corona discharge. A reactor and an electrode suitable for use in such reactor are also disclosed.

Abstract: A sterilizing apparatus is inserted into a cold or warm water passage of a water dispenser, a purified water passage of a water purifier, a discharge pipe of a beverage bending machine, an air suction unit of an air conditioner and so on to inject a high pressure steam for sterilization. The sterilizing apparatus using a high pressure steam includes an injection member for controlling a high pressure steam to be selectively injected; a rotating unit having a hollow perforated in a length direction of the rotating unit so that the steam injected from the injection member passes through the hollow, a rotating means being installed in the hollow to be rotated by the passing steam; and a nozzle unit coupled to the rotating means to rotate together with the rotating means, and having a rod-shaped nozzle for injecting the steam.

Abstract: The present invention is drawn to disinfectant or sterilant compositions, which are human safe, e.g., food grade or food safe. In one embodiment, an aqueous disinfectant or sterilant composition can comprise an aqueous vehicle, including water, from 0.001 wt % to 50 wt % of a peracid, and from 0.001 wt % to 25 wt % of a peroxide. Additionally, from 0.001 ppm to 50,000 ppm by weight of a transition metal based on the aqueous vehicle content can also be present. The composition can be formulated to include only food-grade ingredients. Alternatively or additionally, the transition metal can be in the form of a colloidal transition metal.

Abstract: The present invention is relates to an apparatus and method for the determination of the oxygen gas permeability of a polymer. In one embodiment, the present invention relates to an apparatus and method for determining the oxygen gas permeability of a polymer membrane (e.g., a polydimethylsiloxane and/or polysiloxane polymer or copolymer). In still another embodiment, the present invention relates to oxygen gas permeable polymer compositions.

Abstract: We present a device for measuring levels and concentrations of sugar in objects that is suitable for food production and distribution industries. One of the key characteristics of the device is its ability to perform the measurement without destructing the product, and therefore, maintaining its quantity and quality. The technologies empowering the invention are the nondestructive ultrasonic sensing and the intelligent analysis of data collected. Ultrasonic waves are emitted towards the object from different directions, and the different reflections are collected and passed by for analysis. The analytic component analyses the signals, and with the use of advanced signal processing technologies, the signatures that represent the presence of sugar are extracted. These, combined with the measurement of the analyzed volume are used to find out the concentration and amount of sugar in the product.

Abstract: A chemical sensor based on an indicator dye wherein a light transmissive element containing the indicator dye is made of a hygroscopic polymer. The polymer may be, for example, a polyimide or PMMA or other polymer. In an alternative embodiment the light transmissive element is doped with metal nanocolloidal particles. One embodiment may include a reference photodiode and differential amplifier to compensate for the fluctuations of the intensity of the light source. The light source may be pulse modulated. The sensor may include calibration means comprising a reference sample of the chemical to be detected and a precision delivery means. A method of fabricating the polymer and metal nanocolloid is disclosed wherein the nanocolloid is produced by generating a pulsed laser plasma in a suspension of metal particles and an organic solvent and adding the resulting solvent colloid to a solution containing the polymer.

Abstract: Disclosed herein is a device for measuring fluid dispense volumes including one or more wells adapted to receive a fluid; a tube having an internal passageway fluidly coupled to the one or more wells, wherein fluid in the wells passes into the internal passageway via capillary action to form a fluid column having a meniscus spaced from the wells; and a scale coupled to the tube, the scale calibrated to provide an indication of the volume of the fluid based upon the location of the meniscus in the fluid passageway.

Abstract: Apparatus and methods for testing the hydrogen-gas compatibilities, hydrogen-gas embrittlement susceptibilities, hydrogen-gas containment performances, and/or the hydrogen-gas pressure-cycling durabilities, of hollow enclosures (“test specimens”), with single-layer, double-layer, or multi-layer walls, composed of various barrier materials, are disclosed. Barrier materials include but are not limited to: carbon steel, stainless steel, copper, aluminum, a polymeric material (e.g., high-density polyethylene), and a liquid material (e.g., water, or an aqueous solution). The test gas is either high-purity hydrogen or a hydrogen-bearing gas mixture (e.g., hydrogen gas mixed with methane/natural gas and/or biomethane). A key piece of the testing equipment is an enclosure that surrounds the test specimen. Fabricated from high-strength, porous solid material (e.g.

Abstract: A microfluidic device having a first semi-crystalline polymer film with an amorphous or quasi-amorphous surface adhered to an amorphous or quasi-amorphous surface of a second semi-crystalline polymer film. The first semi-crystalline polymer film may also be adhered in part to a conductive layer.

Abstract: The invention concerns the field of automatic analysis instruments (analyzers) and relates to a method for preventing repeat use of disposable articles in analyzers.

Abstract: An upper end 3 of a nozzle tip 2 is adapted to have an inside diameter dimension smaller than an outside diameter of a lower portion of a barrel 4, so that nozzle tips 2 are not piled up. An upper curved surface 11, which is curved in an outer direction of the nozzle tip 2 starting with a boundary portion between the barrel 4 and a leading end opening 5 of the nozzle tip 2 and the leading end opening 5, is formed. A lower curved surface 12 is formed continuously from the upper curved surface 11 to be curved in an inner direction. An angle formed between a line tangent to a boundary portion 13 between the upper curved surface 11 and the lower curved surface 12 and a center axis of the nozzle tip 2 is adapted to fall within a range between 45° and 20°.

Abstract: The disclosed apparatus includes a stator and a rotor disposed for rotation within the stator. An inner wall of the stator defines one or more collider chambers. Rotation of the rotor causes movement of fluid disposed between the rotor and stator and establishes a rotational flow pattern within the collider chambers. The fluid movement induced by the rotor increases the temperature, density, and pressure of the fluid in the collider chamber.

Abstract: The invention relates to sealing device for microplates, a method of sealing and a novel use. The sealing device is used for isolating the interior of a biological reaction vessel from the exterior of the reaction vessel and comprises a generally planar sealing layer intimately attachable to the vessel by heating so as to cover an open end of the vessel. According to the invention, the sealing layer is formed of elastomeric material capable of forming a heat-actuated bond to the vessel at an elevated temperature achievable solely by the heated platen of a thermal cycling apparatus operating at normal thermal cycling protocol operating temperatures and placed in contact with the sealing device. The invention provides a simplified device and method for sealing microplates effectively.

Abstract: A multichannel array structure is provided and a mechanism for establishing a viscous flow within the multichannel array for preventing the flow of particulates (???material) that cause window clouding. A process chamber is provided for confining a process pressure within a process volume with a viewport window along the chamber for viewing at least a portion of the process volume. A ingress port is disposed in the process chamber, and to the process volume, for receiving a flow of process gas in the process volume and an egress port is disposed, and in the process chamber, to the process volume for extracting a flow rate of gas from the process volume. A multichannel array (MCA) is disposed between the viewport window and the process volume of the process chamber. The MCA has a plurality of channels, each of the channels having a diameter and a length. A window chamber is defined between the viewport window and MCA with a chamber window port for receiving gas into the chamber volume.

Abstract: A semiconductor oxidation apparatus is provided with a sealable oxidation chamber defined by walls, a base provided within the oxidation chamber and configured to support a semiconductor sample, a supply part configured to supply water vapor into the oxidation chamber to oxidize a specific portion of the semiconductor sample, a monitoring window provided in one of the walls of the oxidation chamber and disposed at a position capable of confronting the semiconductor sample supported on the base, a monitoring part provided outside the oxidation chamber and capable of confronting the semiconductor sample supported on the base via the monitoring window, and an adjusting part configured to adjust a distance between the base and the monitoring part.

Abstract: The present application relates to microfluidic devices and related technologies, and to chemical processes using such devices. More specifically, the application discloses a fully automated synthesis of radioactive compounds for imaging, such as by positron emission tomography (PET), in a fast, efficient and compact manner. In particular, this application describe an automated, stand-alone, microfluidic instrument for the multi-step chemical synthesis of radiopharmaceuticals, such as probes for PET and a method of using such instruments.

Abstract: A swing bed canister assembly for a regenerative carbon dioxide removal system includes a housing that includes an integrally formed central wall that divides an adsorbing amine bed from a desorbing amine bed. The central wall defines spaces for each of the amine beds so that each portion of the desorbing amine bed is disposed in thermal communication with an adsorbing amine bed to facilitate desorption.