Abstract: A cooling fan assembly includes a fan with a frame, two fixing members arranged at two opposite lateral sides of the frame, and a plurality of fixing poles detachably interconnecting the frame with the base portions of the two fixing members. The two fixing members each include a base portion and a handling portion extending from a top of the base portion. The handling portions extend upwardly and inclined toward each other along a direction away from the base portions. One end of the fixing pole penetrates through and is fixed on the frame, and the other end of the fixing pole is gripped by the base portion.

Abstract: A downwind morphing rotor that exhibits bending loads that will be reduced by aligning the rotor blades with the composite forces. This reduces the net loads on the blades which therefore allow for a reduced blade mass for a given maximum stress. Also provided is a pre-aligned configuration rotor whereby the rotor geometry and orientation does not change with wind speed, and instead is fixed at a constant downwind deflection consistent with alignment at or near the rated wind speed conditions. Also provided is a twist morphing rotor where the airfoil-shapes around the spars twist relative to the wind due to aerodynamic forces so as to unload the rotors when there is a gust. This can help reduce unsteady stresses on the blade and therefore may allow for reduced blade mass and cost. The twist morphing rotor may be combined with either downwind morphing rotor or pre-alignment rotor.

Abstract: A floating structure has a hull and a propeller propulsion system having a gear arrangement that is connected via a first intermediate shaft to at least one electromotor, the electromotor being arranged onboard the floating structure, and via a second intermediate shaft to a propeller. The gear arrangement has an angular gear. The first intermediate shaft forms an angle relative to the second intermediate shaft. The gear arrangement is arranged as a separate unit in an appendage or addition to the hull of the floating structure. The appendage or addition is designed to allow an interior thereof to be accessed from within the vessel, whereby maintenance, replacement, or repairs of the gear arrangement can be carried out. The angular gear has at least one angled gearwheel set and one cylindrical gearwheel set.

Abstract: A low pressure steam turbine is disclosed including a rotor having: a rotor body; and a plurality of bucket stages disposed axially along the rotor body, the plurality of bucket stages including a last bucket stage; and a nozzle assembly at least partially surrounding the rotor, the nozzle assembly including a plurality of nozzle stages corresponding to the plurality of bucket stages, wherein a nozzle in a nozzle stage axially upstream of the last bucket stage is adjustable to modify a fluid flow within the last bucket stage during operation of the low pressure steam turbine.

Abstract: A system for actively controlling the span-wise rotational twist of a hollow beam along its longitudinal axis, including a hollow beam structure having a leading edge and a trailing edge region, the beam being split along its length, an actuator arranged between split surfaces of the beam, the actuator adapted to move the split surfaces in a longitudinal direction relative to each other, inducing a twist in the beam. The hollow beam is affixed to an external structure at one or both ends, with only the zero warping displacement points of the beam being attached to the external structure, material or device. In one embodiment, the actuator is a plurality of solid blocks with high thermal expansion coefficients arranged between frames of the split surfaces of the beam, with alternating blocks being heated by resistance heaters to cause expansion in the spanwise longitudinal direction.

Abstract: Platforms (36, 38) span between turbine blades (23, 24, 25) on a disk (32). Each platform may be individually mounted to the disk by a pin attachment (42). Each platform (36) may have a rotationally rearward edge portion (50) that underlies a forward portion (45) of the adjacent platform (38). This limits centrifugal bending of the rearward portion of the platform, and provides coolant sealing. The rotationally forward edge (44A, 44B) of the platform overlies a seal element (51) on the pressure side (28) of the forwardly adjacent blade, and does not underlie a shelf on that blade. The pin attachment allows radial mounting of each platform onto the disk via tilting (60) of the platform during mounting to provide mounting clearance for the rotationally rearward edge portion (50). This facilitates quick platform replacement without blade removal.

Abstract: A rotor blade assembly for a rotor of a gas turbine engine having an axis of rotation includes a shank portion formed from a ceramic matrix composite (CMC) material. The rotor blade assembly also includes a platform portion formed from a substantially similar CMC material as that of the shank portion. The platform portion is coupled to the shank portion. The platform portion and the shank portion cooperate to at least partially define two opposing side portions of the rotor blade assembly. The opposing side portions are angularly separated with respect to the axis of rotation. The rotor blade assembly further includes a damper retention apparatus. The damper retention apparatus is coupled to the shank portion. The damper retention apparatus includes at least one angled bracket apparatus extending toward a circumferentially adjacent rotor blade assembly.

Abstract: A method of manufacturing a rotor blade is provided. The method includes forming a preform from a plurality of composite plies, the preform including an airfoil portion and a dovetail portion, removing a cutout portion from the dovetail portion of the preform to define a cutout in the preform, wherein the removing the cutout portion facilitates reducing residual stresses in the preform, and inserting an insert into the cutout formed by the removal of the cutout portion.

Abstract: An airfoil profile is formed such that a passage width ratio, represented in a dimensionless manner, of an inter-blade passage width of vane root cross-section to an outlet throat width substantially monotonously decreases from a blade inlet toward a blade outlet. The blade has a blade airfoil profile shape in an envelope within a range of ±2.0 mm in a direction normal to any surface location of an airfoil profile portion. The airfoil profile portion has a reference airfoil contour represented in Cartesian coordinates, wherein Z is a distance representing a sectional height from a root of the airfoil profile portion. The contours represented by X and Y at each section Z are joined smoothly with one another in a blade height direction to form a complete shape of the airfoil profile portion.

Abstract: A turbine bucket is provided including a bucket airfoil having an airfoil shape, the bucket airfoil having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Table 1 wherein the Cartesian coordinate values of X, Y and Z are non-dimensional values from 0% to 100% convertible to dimensional distances in inches by multiplying the Cartesian coordinate values of X, Y and Z by a height of the airfoil in inches, and wherein X and Y are distances in inches which, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z, the airfoil profile sections at Z distances being joined smoothly with one another to form a complete airfoil shape.

Abstract: A method for joining a cast metal material blade ring and a metal material hub structure into a turbine rotor. One of the blade ring and the hub structure is mounted in a holder and the other is mounted in a rotation holder for being rotated. At least one of these mountings is heated, and then they are pressed together with a selected force while rotating to weld the ring interior wall and the disk side to form the assembled structure.

Abstract: A blade assembly for a turbomachine compressor includes a plurality of individual devices acting on the flow. The individual devices are provided upstream of the blade assembly and are formed at least so as to generate vortices. Each of the individual devices is arranged on an upstream face of a shroud around which a recirculating flow passes, circulating in a cavity. The recirculating flow is reinjected into the principal flow such that the individual devices act simultaneously on the principal flow and on the recirculating flow.

Abstract: A rotor for use in an aircraft includes an inner hub; and a plurality of blades arranged around the inner hub, each of the plurality of blades comprising an inner structural member; an outer blade shell surrounding the inner structural member; and a centering block located at a base of the inner structural member proximal to the inner hub, wherein the centering block is located between a first lateral portion of the inner structural member and a second lateral portion of the inner structural member, wherein the centering block is further connected to the outer blade shell, and wherein the centering block allows the outer blade shell to rotate about an axis approximately corresponding to the inner structural member.

Abstract: The invention concerns a wind power installation rotor blade. The rotor blade has a rotor blade root, a rotor blade tip, a rotor blade leading edge and a rotor blade trailing edge. The rotor blade further has a pressure side and a suction side as well as at least one web at least partially between the suction and pressure sides. The rotor blade has a longitudinal direction between the rotor blade root and the rotor blade tip. The web is of a wave-shaped configuration in the longitudinal direction of the rotor blade.

Abstract: A method of forming an airfoil includes forming a metal portion of the airfoil including a tip, a leading edge, a trailing edge, a pressure side and a suction side; forming a plurality of grooves into one side of the airfoil; and filling the plurality of grooves with composite material.

Abstract: A rotor blade assembly for a wind turbine is disclosed. The rotor blade assembly includes a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root. The surfaces further define an interior, and the rotor blade further defines a span and a chord. The rotor blade assembly further includes a strut disposed in the interior and extending between the pressure side and the suction side. A length of the strut extends in a generally spanwise direction, and a width of the strut extends diagonally to the chord.

Abstract: A jacket structure for offshore constructions, particularly for offshore wind turbines, includes a number of first and second profiles, whereby the first profiles have rods in axial alignment and the second profiles have rods in an angled alignment relative to the first profiles. A number of node members are provided, whereby a connection of aligned profiles and/or aligned profiles and node members is established by connecting means with at least two fastening points and at least one elongate tension element extending between the fastening points. The at least one elongate tension element at least partially penetrates through the respective aligned profiles and/or aligned profiles and node members.

Abstract: A fan grill for a mosquito trap is a board and has a center, a funnel-shaped shell, multiple air holes and a through hole. The shell is formed downward in the center and is tapered off to a bottom. The air holes are respectively formed through the shell and are arranged radially and spirally. The through hole is formed on the bottom of the shell. The radial and spiral air holes are designed according to direction of airflow created by a fan so allow the airflow to pass smoothly therethrough and to generate steady suction forces. Besides, hole diameters of the air holes are less than sizes of mosquitoes so trapped mosquitoes are prevented from escaping from between fan blades of the fan. Therefore, trapping efficiency is enhanced.

Abstract: A vane assembly for a gas turbine engine including an endwall and an airfoil extending from the endwall. An inner rail extends radially inwardly of the endwall, and an overhang portion extends axially from a location of the inner rail to a downstream edge. A recess cavity is defined in the overhang portion between the inner rail and the downstream edge. The recess cavity extends radially into the overhang portion and defines a cavity surface. A plurality of grooves extend radially into the cavity surface and have an elongated dimension extending in a direction from the inner rail toward the downstream edge. A plurality of cooling passages extend axially through the overhang portion, and are located between the grooves.

Abstract: An airfoil in a gas turbine engine includes an outer wall, a cooling fluid cavity, and a plurality of cooling fluid passages. The outer wall has a leading edge, a trailing edge, a pressure side, a suction side, and radially inner and outer ends. The cooling fluid cavity is defined in the outer wall, extends generally radially between the inner and outer ends of the outer wall, and receives cooling fluid for cooling the outer wall. The cooling fluid passages are in fluid communication with the cooling fluid cavity and include zigzagged passages that include alternating angled sections, each section having both a radial component and a chordal component. The cooling fluid passages extend from the cooling fluid cavity toward the trailing edge of the outer wall and receive cooling fluid from the cooling fluid cavity for cooling the outer wall near the trailing edge.

Abstract: A refrigerant compressor includes a housing providing a refrigerant outlet having a throat. An electric motor is provided in the housing to directly drive an impeller via a shaft about an axis in response to a variable speed command. The impeller includes an outlet end aligned with variable geometry diffuser. A magnetic bearing assembly rotationally supports the shaft relative to the housing in response to a magnetic bearing command. A member is arranged to adjust the throat area, and which can move in a direction generally parallel to the axis in response to an actuator receiving a compressor regulation command. A controller is configured to respectively provide the variable speed command, the magnetic bearing command and the compressor regulation command to the electric motor to vary throat area, the magnetic bearing assembly and the actuator to obtain a desired compressor operation without the need of variable inlet geometry.

Abstract: A pump chamber is connected to an outlet-side buffer chamber via an outlet channel, and pumps a liquid from the outlet-side buffer chamber. A pressure vibration generated within the pump chamber when the volume of the pump chamber is decreased includes various kinds of information relating to the operating states of the liquid feed pump, such as mixing of bubbles, pumping pressure, dissolved gas amount, and liquid feed amount. Thus, it is possible to detect the pressure vibration, thereby simply and easily detecting the various kinds of information relating to the operating states of the liquid feed pump.

Abstract: A controller of a compressor of the present invention sets a time in a timer according to a motor current detected by a motor current detector. When a time has reached the time set in the timer, the rotating speed of a DC motor is increased. Therefore, control of the rotating speed according to a load can be achieved. When it is determined that a refrigerator load is great, the compressor is operated at a higher speed quickly, while when it is determined that the refrigerator load is smaller, the compressor is operated at a lower speed, which results in energy saving.

Abstract: The invention relates to a method for managing a hybrid compressor (10) for an air-conditioning circuit of a motor vehicle having a heat engine, said hybrid compressor being suitable for being driven, on the one hand, by said heat engine and, on the other hand, by an electric motor (20) during phases in which the drive of the compressor (10) by means of the heat engine is interrupted. According to the invention, during a phase in which the drive is interrupted, said method comprises starting said electric motor (20) before said drive interruption begins. The invention can be used for air-conditioning motor vehicles having a heat engine and provided with an automatic stopping and restarting system.

Abstract: A method for operating a vehicle heater dosing pump for conveying fuel having a piston which can be moved back and forth between a start position and an end position, and a drive unit which can be electrically excited by applying a voltage, having the following procedure: controlling and/or regulating the voltage for generating an effective voltage to transfer the piston from the start position to the end position, wherein the effective voltage reaches a first maximum (U1) in a start phase (t0-t1), and is lower than the first maximum in a subsequent intermediate phase (t1-t2). The effective voltage reaches a second maximum (U3) in an end phase (t2-t3) following the intermediate phase. A device is also provided having a dosing pump and a control/regulation unit. The control/regulation unit is suitable for controlling voltage applied to a drive unit of the dosing pump.

Abstract: A compressor apparatus having a first compressor head for generating a first gas flow and a second compressor head for generating a second gas flow with a shuttling by-pass component in fluid flow communication between the first and second compressor heads for allowing the output of a portion of either the first gas flow or the second gas flow to be diverted to the other compressor head. The shuttling by-pass component allows a portion of the first gas flow to be diverted from the first compressor head to the second compressor head during an exhaust stroke of the first compressor head, while also allowing a portion of the second gas flow to be diverted from the second compressor head to the first compressor head during an exhaust stroke of the second compressor head in alternating sequence such that a more steady output of gas flow may be attained.

Abstract: A starter/generator machine for a turbine with a turbine enclosure, an air duct, and a plurality of fan blades is provided. The starter/generator machine includes a plurality of stator elements spaced at intervals in a ring shape adjacent to the air duct and a plurality of rotor elements mounted on the fan blades. The stator elements and the rotor elements are mounted to interact magnetically to exert a force sufficient to move the rotor elements. The stator elements are shaped to minimize air flow interference and are formed with a core, at least one pole, and multiple windings. The spacing between the stator elements and the rotor elements forms an air gap on the order of 5-10 mm, and the number of stator elements is different from the number of rotor elements.

Abstract: A compressor assembly having a tank seal which seals a tank gap between a portion of a housing of the compressor assembly and a portion of a compressed gas tank and a method for controlling the sound level of a compressor assembly by configuring a tank seal to seal a gap between the housing of a compressor assembly and a compressed gas tank. The sound level of the compressor assembly can be controlled by sealing a tank gap between at least a portion of a compressor assembly housing and at least a portion of a compressed gas tank.

Abstract: An apparatus is provided and may include a compression mechanism, a valve plate having a plurality of ports, a header, and a plurality of cylinders disposed within the header. A plurality of pistons may be respectively disposed in the plurality of cylinders and may be movable between a first position separated from the valve plate and permitting flow through the plurality of ports and into the compression mechanism and a second position engaging the valve plate and restricting flow through the plurality of ports and into the compression mechanism. A chamber may be disposed within each of the cylinders and may receive a pressurized fluid in a first mode to move the piston into the second position and may vent the pressurized fluid in a second mode to move the piston into the first position. One of the chambers may include a different diameter than the other of the chambers.

Abstract: A radial cylinder hydraulic motor includes oscillating cylinders, in proximity to the outer skirt to the crown or star of cylinder-piston groups; the pistons of the said groups slide on a crankshaft or eccentric shaft, or on interposed organs concentric to it, and create alternate motion in the oscillating cylinders. A respective surface of oscillation for each cylinder of the said groups, in proximity to the outer skirt, is constituted by a portion of cylindrical surface with axial direction parallel to the axis of rotation of the crankshaft or eccentric shaft and positioned in the part of skirt including the diametral plane of lying of the said crown or star of radial cylinders.

Abstract: A pump cartridge for use in a hydraulic braking system includes a sleeve having an outer surface and an inner bore. A piston has a first portion that is coaxially received within the sleeve inner bore. A second portion of the piston extends from the sleeve and is configured to reciprocate the piston first portion relative to the sleeve in response to rotation of an eccentric. A retainer engages the sleeve and is configured to maintain the first portion of the piston within the sleeve inner bore. A filter assembly is formed as a separate component and has a bore configured to permit the piston second portion to extend through the filter bore.

Abstract: An automated high-precision plunger pump for volumes of less than 1 microliter, which is used in the microscope-assisted micromanipulation of biological material, comprises a housing (1) and a pump head (8) that defines a working chamber (9) with a common or separate inlet and outlet opening (10), wherein the volume of the working chamber (9) can be altered by an axially movable plunger (7) that can be introduced into it. The plunger (7) is axially movable via a threaded spindle (5) or a spindle nut (6) arranged in threaded engagement on the threaded spindle (5), and the threaded spindle (5) and/or the spindle nut (6) can be rotationally driven and the respective other component is designed to be rotationally lockable.

Abstract: A compressor flange for connecting a screw-type compressor to a drive, wherein the compressor flange has a central opening for receiving a shaft and/or a bearing and a first annular bearing face for bearing on a housing of the compressor and a second annular bearing face for bearing on a housing of the drive. The compressor flange also has axially and/or radially effective seals for forming a seal with respect to the compressor housing and/or the shaft, with the result that an open compressor housing can be closed off and sealed by insertion of the compressor flange. The device relates to a screw-type compressor with such a compressor flange.

Abstract: Provided is a fluid pump including: first and second housings that are mutually coupled; a support, shaft that is fixed to the second housing; an impeller that is accommodated in the first housing to thus pump fluid; a stator that is fixed to the second housing; a first rotor that is placed inside the second housing, rotatably supported on the support shaft, and is placed facing one side of the stator; and a second rotor that is fixed to the impeller, rotatably supported on the support shaft, and is placed facing the other side of the stator. The fluid pump employs an axial type brushless direct-current (BLDC) motor as a drive motor for driving an impeller, to thus realize a slim structure, and is formed to have the stator of the motor buried in the housing, to thus improve waterproof performance of the motor.

Abstract: A dual pump fluid proportioner having an adjustable motor position comprises a mounting plate, first and second positive displacement pumps, first and second tie rods, a pump yoke and a motor. The first and second tie rods fixedly connect the first and second pumps to the mounting plate. The first and second pumps each have a pump shaft. The pump yoke slidably couples to the first and second tie rods and the pump shafts. The motor adjustably couples to the mounting plate and includes a drive shaft. The drive shaft extends from the motor, through the mounting plate to adjustably couple to the yoke.

Abstract: An electric compressor includes a housing, an electric motor, a compression mechanism, and a resin molding. The electric motor includes a coil having coil ends projecting from each of two end surfaces of the stator. Refrigerant flows through the housing that accommodates the electric motor. The resin molding covers each coil end and includes an opening that exposes part of the coil end to the interior of the housing.

Abstract: A fluid feed pump is configured, such that a fluid is fed from an outlet channel of the fluid feed pump through an outlet buffer chamber to a fluid channel. The outlet buffer chamber is designed to have a higher compliance than a compliance of a pump chamber. The driving period of the fluid feed pump is set to a shorter period than a time constant defined by the compliance of the pump chamber and a flow resistance between an inlet of the outlet channel and an outlet of the fluid channel. This enables the fluid to be fed with high efficiency by taking advantage of the pressure oscillation occurring between the pump chamber and the outlet buffer chamber.

Abstract: A hydraulic transport device for transporting a hydraulic medium. The device includes at least one externally toothed gear pump that is driven by an electric motor, and a control device attached to the pump. A passive rotational speed detection element is arranged in the pump and interacts with an active rotational speed detection element that is arranged in the control device to detect the rotational speed of the pump shaft.

Abstract: A cooling fan includes a fan frame, a circuit board, a stator-coil unit and an impeller. The fan frame includes a metal seat and a lateral wall. The metal seat comprises an engaging face and an engaging portion arranged on the engaging face. The lateral wall is arranged on a periphery of the metal seat and includes an air inlet and an air outlet. The circuit board includes a positioning hole. The circuit board is press fitted around the engaging portion of the metal seat via the positioning hole and adhered to the engaging face of the metal seat. The circuit board includes an insulation layer facing the metal seat. The stator-coil unit is mounted on the metal seat of the fan frame and electrically connected to the circuit board. The impeller is rotatably coupled with the stator-coil unit.

Abstract: The present invention provides such pumping apparatuses that have very little deviation and high stability in pumping flow. A pumping apparatus comprises two members that are set along a longitudinal direction of a tube made of an elastic material with a relation that the space formed by grooves made in the two members holds the tube. The two members have reciprocal motion such that at least one of the two opposing members shuttles in parallel with the other opposing member and has a move-in motion such that at least one of the two opposing members vertically moves to the opposing surfaces of the other opposing member so that surrounding part of the groove thereof moves into an inner space of the groove of the other opposing member, by which motion the liquid in the tube is discharged from the tube by the deformation of tube cross sectional shape.

Abstract: In an aspect, the disclosure provides an apparatus for use downhole. In one aspect the apparatus includes a rotor with lobes disposed in stator with lobes, wherein at least one of the contours of the rotor lobe and the contour of the stator lobe is asymmetric.

Abstract: In a scroll compressor, a sealing portion of a discharge cover placed between a suction spacer and a discharge space is formed to be spaced apart in an axial direction from a fixed scroll, whereby the discharge cover is in contact with a fixture in an axial direction only on a single circumference, facilitating fabrication and assembling of the discharge cover. Also, after assembly, when the discharge cover is pressurized toward the fixed scroll by a discharge pressure of a refrigerant discharged to the discharge space, the discharge cover does not transfer pressurization force to the fixed scroll, thus reducing a frictional loss between the fixed scroll and an orbiting scroll.

Abstract: A seal member is configured so that an annular rubber member is disposed in an annular storage chamber of a resin annular member. Thus, the rubber annular member is not directly in contact with a drive shaft, and the rubber annular member can be prevented from wearing or peeling without requiring a rotation stopping structure for the seal member. Furthermore, the seal member is provided with first and second communication mouths, so that a brake fluid pressure is applied to compartments obtained by dividing the annular storage chamber using the rubber annular member. Thus, the rubber annular member is pressed, and then is elastically deformed, and accordingly, the resin annular member is expanded by the elastic force. Thus, a self-sealing operation can be performed on the basis of a high pressing force.

Abstract: There is provided a vane compressor with a plurality of vanes having a structure in which a rotor portion and a rotary shaft are unitarily formed so as to reduce bearing sliding loss of the rotary shaft and reduce gas leakage loss by narrowing a space formed between the rotor portion and the inner peripheral surface of a cylinder.

Abstract: The present invention relates to an optical irradiation unit (10) for a plant (100) for producing workpieces by irradiating powder layers of a raw material powder with laser radiation, comprising optical components (40, 50, 60, 70) for guiding and focussing a beam path of a first laser beam (200), and an optical splitting and coupling unit (62, 64, 66) for splitting the first laser beam (200) into at least two laser sub-beams and/or for coupling a second laser beam (300) with a wavelength differing from the wavelength of the first laser beam (200) into the beam path of the first laser beam (200). The invention also relates to a plant (100) for producing work-pieces by irradiating powder layers of a raw material powder with laser radiation, and to an associated method.

Abstract: A modeling apparatus includes a box holding mechanism, a box, a supply mechanism, and an elevation mechanism. The box includes a main body and a stage movably provided to the main body. The box is capable of accommodating powder and detachably provided to the box holding mechanism. The supply mechanism is configured to selectively supply liquid that bonds the powder together to a modeling enabled area inside the box. The elevation mechanism is configured to cause the stage to ascend and descend in the main body relative to the main body.

Abstract: A method for injection molding or extrusion of cemented carbide or cermet parts uses a binder system, including 20-70 wt-% olefinic polymer, 30-80 wt-% wax. The olefinic polymer is a co-polymer of polyethylene and poly(alpha-olefin). By using such a binder system, a tougher material behavior of the green body and a lower temperature during the injection molding or extrusion is achieved.

Abstract: A grommet device and method of using a grommet device is provided. A top structure has a top surface. An aperture having a central axis is positioned interior of the top structure. A sidewall is formed around the aperture and connected to the top structure. The sidewall is positioned substantially perpendicular from the top surface of the top structure. At least two upper protruding structures are connected to the top structure at different locations along the top structure, wherein each of the upper protruding structures extends into the aperture. At least two lower protruding structures extend from the sidewall at different locations along the sidewall, wherein each of the lower protruding structures have a flexing portion extending into the aperture, wherein each of the upper protruding structures are substantially radially aligned with the flexing portion of each of the lower protruding structures, respectively.

Abstract: A device having dielectric layer with opposite sides and a length. First and second electrodes are each on an opposite side of the dielectric layer and offset along the length of the dielectric layer. A voltage source selectively provides a first voltage on the first electrode and a second voltage on the second electrode such that plasma is generated along the dielectric layer, the plasma providing a decontamination mechanism of adjacent air, and movement of the adjacent air along the dielectric layer.

Abstract: A method for manufacturing of ultrahigh molecular weight polyethylene (UHMWPE) for implants, where the implants have been machined out of UHMWPE blocks or extruded rods, has anthocyanin dispersely imbedded in the polyethylene. The implant is then exposed to ? ray or electron beam irradiation in an amount of at least 2.5 Mrad followed by a heat treatment to prevent the implant from becoming brittle in the long term as well as to improve strength and wear. The method includes mixing a powder or granulate resin of UHMWPE with an aqueous liquid that contains anthocyanin in a predetermined amount. The water is then evaporated to deposit the anthocyanin in a predetermined concentration on the polyethylene particles. The doped UHMWPE particles are compressed into blocks at temperatures in a range of approximately 135° C.-250° C. and pressures in a range of approximately 2-70 MPa. Medical implants are made from the blocks.