Abstract: A liquid cooling apparatus for cooling an inversely mounted electronic component, includes a casing defining a receiving room therein, a diaphragm, a partition plate forming a nozzle thereon, and a piezoelectric element attached to the diaphragm in such a manner that a vibrating direction thereof is perpendicular to the diaphragm. The diaphragm is arranged in the receiving room and divides the receiving room into a top first chamber and a bottom second chamber isolated from each other. The partition plate is arranged in the first chamber and divides the first chamber into an upper region and a lower region. The lower region is filled with a working fluid. When the diaphragm is driven to vibrate upwardly by the piezoelectric element, the diaphragm pushes the working fluid in the lower region of the first chamber to the upper region of the first chamber via the nozzle.

Abstract: An electrostatically atomizing kit for use in a vehicle has an atomizing unit in combination with a plurality of differently shaped deflector guides. The atomizing unit is supplied with water and electrostatically atomizing the water into charged minute water particles in the form of a mist to be carried on a conditioned air blowing into a passenger's room through a blow port. The deflector ducts are selectively detachable to the blow port, and are differently shaped to each other to deflect the conditioned air carrying the mist in different directions in order to effectively concentrate the mist carried air to a particular object or item in the passenger's room.

Abstract: A stacked piezoelectric device 1 including a ceramic laminate formed by laminating piezoelectric ceramic layers and inner electrode layers alternately and a pair of side electrodes. The inner electrode layers 13 and 14 have inner electrode portions 131 and 141 and the recessed portions 132 and 142. The ceramic laminate 15 has the stress absorbing portions 11 and 12. A recessed distance of one of two of the recessed portions 132 and 142 which interleave the stress absorbing portions 11 and 12 therebetween which is located on the same side surface as the stress absorbing portion 11 or 12 is greater than the depth of the stress absorbing portion 11 and 12.

Abstract: An electronic device has an electronic signal source electrically connected to a signal routing circuit, an electrically activated transducer to receive electronic signals through the signal routing circuit, and an anisotropic conductive film to provide electrical continuity between the signal routing circuit and the transducer, the anisotropic conductive film having material removed adjacent the transducer to reduce mechanical loading of the transducer.

Abstract: The present invention comprises a high performance, horizontal, zero-net mass-flux, synthetic jet actuator for active control of viscous, separated flow on subsonic and supersonic vehicles. The present invention is a horizontal piezoelectric hybrid zero-net mass-flux actuator, in which all the walls of the chamber are electrically controlled synergistically to reduce or enlarge the volume of the synthetic jet actuator chamber in three dimensions simultaneously and to reduce or enlarge the diameter of orifice of the synthetic jet actuator simultaneously with the reduction or enlargement of the volume of the chamber. The present invention is capable of installation in the wing surface as well as embedding in the wetted surfaces of a supersonic inlet. The jet velocity and mass flow rate for the SJA-H will be several times higher than conventional piezoelectric actuators.

Abstract: The invention relates to a method and a device for offsetting bounce effects in a piezo-actuated injection system of an internal combustion engine using a control valve actuated by a piezoelectric actuator. The inventive method comprises the following steps: detecting an actual bounce behavior of the control valve, and determining and offsetting a deviation between the actual bounce behavior and a desired bounce behavior of the control valve, thereby generating an actuation information for the control valve which influences a speed characteristic of a needle of the control valve. The invention also relates to a device for carrying out the inventive method.

Abstract: The invention provides a method and system for conducting a continuous operation, flowing vapor phase decontamination in either an open loop or a closed loop. Using the method, a multi-component liquid decontaminant is vaporized and delivered into, through and out of a sealable enclosure by means of a carrier gas that is flowing into, through and out of said sealable enclosure. After leaving the enclosure, the vapor is captured in a cold-water bath and decomposed. The invention humidifies the carrier gas by passing it through a temperature controlled water bath to warm, or to cool, the carrier gas as necessary in order to bring the carrier gas to the desired temperature and humidity before it is combined with the vaporized sterilant and allowed to flow into the sealable enclosure. The concentration of the vapor sterilant and the percent saturation of the vapor sterilant are simultaneously controlled by controlling the rate at which the carrier gas flows and the rate at which the liquid sterilant is vaporized.

Abstract: A multi-layer piezoelectric element includes a stacked body in which piezoelectric layers and internal electrode layers are alternately laminated and a stress relaxing layer is disposed at part of portions between the piezoelectric layers, and an external electrode that is bonded to a side face of the stacked body so as to make electrical connection with the internal electrode layers, the internal electrode layers being not exposed on the side face of the stacked body, but the stress relaxing layer being exposed on the side face of the stacked body.

Abstract: A multi-layer piezoelectric element includes a stacked body in which piezoelectric layers and internal electrode layers are alternately laminated in such a way that an end face of each of the internal electrode layers is partly exposed at a side face of the stacked body; and a pair of external electrodes configured to bond to side faces of the stacked body so as to make connection with the internal electrode layers, wherein a multiplicity of voids exists in the internal electrode layers, and the end face of each of the internal electrode layers partly exposed at the side face of the stacked body is substantially free from the voids.

Abstract: An apparatus (1) for the atomisation of a liquid including: a piezoelectric substrate (5) having at least one working surface (7), at least one electrode (9) supported on the piezoelectric substrate (5), a signal generating means (21) for applying an ultrasonic signal to said electrode (9) for generating a surface acoustic wave (SAW) in the working surface (7) of the piezoelectric substrate (5); a liquid delivery arrangement (11) including a wick (17) in contact with the working surface (7) for delivering liquid thereof, wherein liquid delivered to the working surface (7) is atomised by SAW irradiation.

Abstract: A center of a multi-layer piezoelectric element is an active region and deforms to a greater degree than ends thereof which is an inactive region during driving operation, and is therefore more susceptible to stress concentration and crack development. To address this problem, a multi-layer piezoelectric element includes a columnar stacked body in which piezoelectric layers and internal electrode layers are alternately laminated, and a pair of external electrodes configured to bond to side faces of the columnar stacked body, wherein a side face of the columnar stacked body is configured so that a surface roughness of a center of the side face in a stacked direction of the columnar stacked body is greater than those of ends of the side face in the stacked direction of the columnar stacked body. This makes it possible to relax the stress exerted on the side face of the columnar stacked body, and thereby enhance the durability of the multi-layer piezoelectric element.

Abstract: Generator (1) of synthetic jets (2) for a main flow of fluid, comprising a cavity (10) delimited by a fixed wall (13) and a mobile wall. The fixed wall comprises a sleeve (8) and a head (4) provided with an orifice (14) through which the generated jet of fluid (2) is drawn in from and ejected into the main flow of fluid. The mobile wall is opposite the head. The generator comprises a rigid piston (3) including the mobile wall and sliding in a fluid-tight manner in the sleeve (8), and comprises an actuator mechanically linked with the piston and able to drive the piston with an alternating movement having an amplitude and a frequency. The actuator is capable of providing a movement of variable amplitude and frequency, at least the amplitude being variable during the movement. The actuator comprises a mechanism for the mechanical amplification of displacement.

Abstract: A piezoelectric-actuated fuel injector for injecting fuel into a combustion chamber of an internal combustion engine is provided which includes a piezoelectric actuator movable to expand in a first direction and movable to contract in a second direction opposite the first direction, and a hydraulic link assembly disposed within said injector cavity. The hydraulic link assembly includes a hydraulic link barrel having an inner bore, a hydraulic link outer plunger positioned to slidably move in the inner bore, and a hydraulic link operatively connected to a needle valve to move the needle valve in the second direction toward the open position in response to movement of the piezoelectric actuator in the first direction. A hydraulic link inner plunger is attached to the needle valve and extends into a center bore of the hydraulic link outer plunger. Leakage control features and hydraulic link refill valves are also provided.

Abstract: An actuator module including a piezoactuator, for example for a piezoinjector for metering fuel in an internal combustion engine, is proposed. The piezoactuator has piezoelements stacked one above another between an actuator head and an actuator foot and is provided with at least one elastomer layer enclosing the piezoelements. The elastomer layer is enveloped by a corrugated bellows or by telescopic tubes, composed of a material that is diffusion-impermeable with respect to a fuel to be metered by the piezoinjector. The corrugated bellows or the telescopic tubes have on their periphery grooves which can absorb expansions of the elastomer layer or of the piezoactuator.

Abstract: An aromatic nebulizing diffuser includes a base panel (10), a power adapter (20), an electric fan (30), a shell (40), a fluid container (50), an oscillator (60) and a top over (70). The oscillator (60) oscillates an aromatic fluid in the fluid container (50) to produce a fine mist. The fluid container (50) has an air conduit (53) that reduces in direction from its bottom air inlet (531) toward its top air outlet (532) for causing acceleration of the speed of the induced flow of air to carrying the fine mist of aromatic fluid droplets out of jet holes (71) on the top cover (70). The fluid container (50) is detachably fastened to the base panel (10) by means of plugging bottom mounting rods (512) of the fluid container (50) into respective tubular upright posts (12) of the base panel (10), facilitating cleaning.

Abstract: A multi-layer piezoelectric element having higher durability which experience less decrease in the amount of displacement even when operated continuously over a long period of time under a high pressure and a high voltage is provided. The multi-layer piezoelectric element comprises a plurality of piezoelectric layers and a plurality of internal electrode layers, wherein the piezoelectric layers and the internal electrode layers are stacked alternately one on another, and at least one of the plurality of internal electrode layers contains at least one nitride, titanium nitride or zirconium nitride.

Abstract: A heat resistant piezo bimorph synthetic jet apparatus comprises a working fluid chamber partially defined by a plate, a working fluid port that provides fluid flow communication between the working fluid chamber and a working fluid mass, and a bimorph piezoelectric structure included in the plate. The bimorph piezoelectric structure alternately increases and decreases chamber volume by alternately expanding convexly and concavely in response to application of voltage of alternating polarity to alternately draw working fluid into and expel working fluid from the working fluid chamber through the working fluid port. A thermal insulating layer is disposed between the working fluid chamber and the bimorph piezoelectric structure to protect a ceramic layer within the first bimorph piezoelectric structure from high temperature working fluid.

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: A process for producing a piezoelectric oxide having a composition (Ba, Bi, A)(Ti, Fe, M)O3, where each of A and M represents one or more metal elements. The composition is determined so as to satisfy the conditions (1) and (2), 0.98?TF(P)?1.02,??(1) TF(BiFeO3)<TF(AMO3)<TF(BaTiO3),??(2) where TF(P) is the tolerance factor of the perovskite oxide, and TF(BaTiO3), TF(BiFeO3), and TF(AMO3) are respectively the tolerance factors of the oxides BaTiO3, BiFeO3, and AMO3.

Abstract: An aerosol generator has a vibratable plate with apertures therein and an annular piezo which causes movement of the vibratable plate. An annular support member supports the piezo and the vibratable plate. A first electrical power conducting pin engages directly with a first, top, surface of the piezo. A second electrical power conducting pin indirectly conducts electrical power to a second surface of the piezo, by contacting an extension tab of the support member, also on its top side. There is a film of cured epoxy adhesive on the tab, providing excellent gripping force between the pin and the support. The aerosol generator avoids need for soldered joints for electrical contact, and the pins are conveniently mounted parallel to each on the on the same lateral and top side of the piezo and support member. The pins may have multi-point tips for particularly effective electrical contact.

Abstract: In a generating method and a generator of mist or fine-bubble, with a simple and small configuration, application into a wide range kind of liquid is enabled, and generating stably the mist or the fine-bubbles or both is enabled. The generator is provided with a piezoelectric substrate which equips two or more comb-like electrodes on a surface and arranged so that the surface may intersect the mutual interface of the gas and the liquid and a part of piezoelectric substrate is put in a liquid, and a surface acoustic wave excited on the surface with the electrode is made to propagate along the surface so that may exist in the upper and lower sides of an interface. The surface acoustic wave generates mist in the gas side which is above the interface, and generates fine-bubbles in the liquid side which is below the interface.

Abstract: A microdroplet generation apparatus comprises an oscillation plate having a first through-hole, a connection plate having a second through-hole corresponding to the first through-hole, a nozzle disc fixed to the connection plate and having a plurality of tiny injection holes on a region thereof corresponding to the first and second through-holes, and a bonding material joining together the oscillation plate and the connection plate. The connection plate has at least one side wall corresponding to and joined with a side wall of the contour or the first through-hole of the oscillation plate. The side walls of the connection plate increase the joined area of the connection plate, whereby is enhanced the joining strength of the connection plate and the oscillation plate, and whereby the connection plate can effectively conduct the vibration energy of the radial and longitudinal Rayleigh waves to the nozzle disc, and whereby is improved liquid atomization.

Abstract: A thermal management system for an embedded environment is described. The thermal management system includes a pleumo-jet that has at least one wall defining a chamber, at least one piezoelectric device on the at least one wall, and a compliant material within the at least one wall and encompassing the chamber. The compliant material has at least one opening providing fluid communication between said chamber and the embedded environment. A cooling system is also described. A method for making a pleumo-jet is also described.

Abstract: A microdosing device with a dosing chamber for the at least temporary reception of a liquid quantity, and with which is associated at least one discharge opening is provided. A vibrating unit in operative connection with at least one boundary surface of the dosing chamber is provided in order to vibrate the same for a discharge process, and with a delivery function unit connected to the vibrating unit for activating the latter during a delivery time period. A drying function unit is additionally provided and can be activated in time-separated manner with respect to the delivery function unit in order to free the dosing chamber from liquid residues.

Abstract: A multilayer piezoelectric element is provided which has excellent durability even if it is continuously driven for a long period of time under high temperature and high humidity. The multilayer piezoelectric element has a laminated body that a plurality of piezoelectric layers are laminated through an internal electrode interposed therebetween, in which the internal electrode, a dummy electrode spaced apart and electrically insulated from the internal electrode, and an insulating part between the dummy electrode and the internal electrode are arranged between two adjacent piezoelectric layers. A porous part having a larger number of voids than the internal electrode is formed at positions opposed in the laminating direction to the internal electrode, the dummy electrode and the insulating part through the piezoelectric layer interposed therebetween, respectively.

Abstract: A piezoelectrically actuated device includes a body, a valve disposed within the body and an actuator for the valve, the actuator including a casing coupled with the body and a piezoelectric element disposed within the casing The actuator further includes a multi-function spring applying a preloading force to the piezoelectric element. The multi-function spring includes a first segment having a piston configured to translate a motion of the piezoelectric element during operation of the actuator, a second segment having at least one flexural element and a third segment having a first set of threads. The first set of threads is engaged with a second set of threads of the actuator and maintains the second segment in a tension state which corresponds with the preloading force.

Abstract: A micro-pump for atomizing and including a main-housing, a nozzle plate, at least an actuator, and a liquid transport pipe is provided. The main-housing has a liquid inlet, a liquid outlet, an air inlet, and a micro-droplet outlet. The nozzle plate is assembled to the main-housing and has at least one nozzle. The nozzle plate divides the interior of the main-housing into a first chamber and a second chamber. The nozzle and the liquid inlet are connected with the first chamber. The air inlet, the liquid outlet, and the micro-droplet outlet are connected with the second chamber. The actuator is disposed on at least one of the main-housing or the nozzle plate. The actuator drives the nozzle plate, so that liquid is filled into the first chamber and sprayed out through the nozzle into the second chamber. The liquid transport pipe connects the liquid inlet and the liquid outlet.

Abstract: A fuel injector apparatus comprising a piezoelectric driving stack and injector assembly wherein a flow control member of the fuel injector apparatus is driven directly by the piezoelectric stack without additional amplification means or interposing elements while the flow area of the nozzle portion is variably adjustable to deliver controlled flow rates in a desired flow profile to improve engine performance and reduce emissions. The injector configuration is adapted to support required flow rates with minimal linear movement of the flow control member.

Abstract: The present invention provides a fuel injector, comprising a housing having a sealable injector seat; a fuel injector pin disposed within the housing proximate to the injector seat such that the injector seat may be sealed and unsealed by displacing the fuel injector pin; a resilient element biasing the fuel injector pin in an unsealed direction; a piezoelectric actuator disposed within the housing proximal to the fuel injector pin configured to actuate to force the injector pin towards the injector seat to seal the injector seat; and a thermal compensating unit disposed within the housing proximal to the actuator and configured to compensate for thermal expansion or contraction of a component of the fuel injector.

Abstract: An atomizer that includes an atomizing unit having a piezoelectric vibrator, an elastic film, and a first liquid feeder. The piezoelectric vibrator includes a vibrating film and a piezoelectric body. An atomization region in the center of the vibrating film has through holes. The vibrating film is mounted on the piezoelectric body. The piezoelectric body causes the vibrating film to vibrate. The elastic film is disposed to face the atomization region. The elastic film is directly or indirectly secured to the piezoelectric vibrator. The first liquid feeder is supported by the elastic film so as to face the atomization region of the vibrating film with a gap interposed therebetween. The first liquid feeder feeds a liquid to the atomization region.

Abstract: A system and method for the packaging of a synthetic jet actuator is disclosed. A synthetic jet actuator is provided that includes a first plate, a second plate spaced apart from the first plate and arranged parallelly thereto, and a housing positioned about the first and second plates and defining a chamber. The housing includes at least one orifice therein such that the chamber is in fluid communication with an external environment. The synthetic jet actuator also includes a mounting mechanism configured to mount the first and second plates within the housing in a suspended arrangement and an actuator element coupled to at least one of the first and second plates to selectively cause deflection thereof, thereby changing a volume within the chamber so that a series of fluid vortices are generated and projected to the external environment out from the at least one orifice of the housing.

Abstract: A piezoelectric foaming pump is provided herein. The piezoelectric foaming pump includes a housing having a first opening for receiving a liquid from a liquid container and a piezoelectric element secured to the housing. The piezoelectric element includes a plurality of holes there through. In addition, the housing includes an air inlet. Although the piezoelectric element has holes there through, prior to activating the piezoelectric element, liquid does not pass through the plurality of holes. When the piezoelectric element is energized, liquid passes through the plurality of holes due to the rapid vibration of the piezoelectric element and is dispensed as a foam. Additionally, a piezoelectric foaming pump having a fluid pump chamber; an air pump chamber; a mixing chamber; a piezoelectric element; and an outlet nozzle is disclosed herein.

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. 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: A charge control unit controls electricity charged to a piezo element, which is for actuating a backpressure control valve so as to control backpressure applied to a valve element for a fuel injection valve. The backpressure control valve is configured to start to decrease the backpressure to actuate the valve element to open an injection port of the fuel injection valve when voltage of the electricity exceeds a threshold. A charge unit increases the voltage by repeating increasing and decreasing a drive current, which is supplied to the piezo element, for multiple times for charging the piezo element. A switching unit alternates the increasing and the decreasing such that the voltage exceeds the threshold in an intermediate period in a middle of a specific increasing period among multiple increasing periods, in each of which the drive current increases.

Abstract: A fuel injection and mixing system is provided that is suitable for use with various types of fuel reformers. Preferably, the system includes a piezoelectric injector for delivering atomized fuel, a gas swirler, such as a steam swirler and/or an air swirler, a mixing chamber and a flow mixing device. The system utilizes ultrasonic vibrations to achieve fuel atomization. The fuel injection and mixing system can be used with a variety of fuel reformers and fuel cells, such as SOFC fuel cells.

Abstract: A device for emitting volatile compositions comprising a capillary element, a channel in fluid communication with the capillary element, an emitting orifice having a forward tilt from about +5 degrees to less than about +90 degrees, and a decoupled piezoelectric actuator for emitting the volatile composition through the emitting orifice. In some embodiments, the device is a plug-in air freshener and reduces surface deposition and improves scent noticeability through improved containment of perfumes during the rest period.

Abstract: An atomizing member that includes a piezoelectric vibrator and a vibrating membrane. The piezoelectric vibrator includes a cylindrical piezoelectric body, a first electrode disposed on an inner circumferential surface of the piezoelectric body, and a second electrode disposed on an outer circumferential surface of the piezoelectric body. The piezoelectric vibrator performs cylindrical breathing vibration. The vibrating membrane is disposed on an opening at a first side in an axial direction of the piezoelectric body so as to cover the opening. The vibrating membrane has a through hole in its central portion.

Abstract: A method for making an electromechanical device including forming an electromechanical transducer that includes a deposited metallic diaphragm, and attaching the electromechanical transducer to a fluid channel substructure.

Abstract: Spray device comprising a piezoelectric element, a sonotrode having a base coupled to the piezoelectric element, and a tube extending as far as a horn, a drive circuit for vibrating the piezoelectric element, and a feed device for bringing the product to be sprayed up to the front face of the horn. The sonotrode mainly vibrates in a mode parallel to the tube, the horn being dimensioned so as not to flex along the longitudinal axis, without flexing when the drive circuit vibrates the piezoelectric element. This spray device is applicable in cosmetology and in perfumery.

Abstract: A jet dispenser is provided with a giant magnetostrictive actuator which expands or contracts in response to electric currents. A set of flexural elements is coupled to first and second ends of the giant magnetostrictive actuator and flexes when the giant magnetostrictive actuator expands or contracts. The jet dispenser further comprises a chamber containing fluid and the fluid is dispensable through a nozzle which is in communication with the chamber. A piston coupled to the set of flexural elements is slidably located in the chamber and is actuable by flexion of the flexural elements to apply a force against the fluid for dispensing fluid through the nozzle.

Abstract: A medication dispenser includes a thermal drop generator ejector head. Medication is maintained in a pressurized container connected to a valve under the control of control electronics and to a compliant chamber. Fluid flows from the container to the chamber and to the ejector head. In a first mode the dispenser is operable to dispense aerosolized medication. In a second mode the ejector head is purged with fluid from the container to maintain the ejector head.

Abstract: In one embodiment, a cooling system is disclosed. The cooling system comprises: a cooling channel for receiving a cooling media, a substrate disposed near the cooling channel, and a fluidic jet disposed within the substrate and in fluid communication with the cooling channel. The cooling channel is for thermal communication with a component to be cooled. The cooling channel has a height of less than or equal to about 3 mm and a width of less than or equal to 2 mm. The fluidic jet comprises a cavity defined by a well and a membrane. In one embodiment, a method of cooling an electrical component comprises: passing a cooling media through a cooling channel, drawing the cooling media into one or more of the fluidic jets, expelling the cooling media from the one or more fluidic jets into the cooling channel, and removing thermal energy from the electrical component.

Abstract: The present invention comprises a high performance, vertical, zero-net mass-flux, synthetic jet actuator for active control of viscous, separated flow on subsonic and supersonic vehicles. The present invention is a vertical piezoelectric hybrid zero-net mass-flux actuator, in which all the walls of the chamber are electrically controlled synergistically to reduce or enlarge the volume of the synthetic jet actuator chamber in three dimensions simultaneously and to reduce or enlarge the diameter of orifice of the synthetic jet actuator simultaneously with the reduction or enlargement of the volume of the chamber. The jet velocity and mass flow rate for the present invention will be several times higher than conventional piezoelectric synthetic jet actuators.

Abstract: A method of operating a fuel injector including a piezoelectric actuator having a stack of piezoelectric elements, and wherein in use the injector communicates with a fuel rail, the method comprises: applying a discharge current to the actuator for a discharge period so as to discharge the stack from a first differential voltage level across the stack to a second differential voltage level across the stack; maintaining the second differential voltage level for a period of time; and applying a charge current to the actuator for a charge period so as to charge the stack from the second differential voltage level to a third differential voltage level; wherein the third differential voltage level is selected in dependence on at least two engine parameters, the at least two engine parameters selected from: rail pressure; the electric pulse time; and the piezoelectric stack temperature.

Abstract: The present invention relates to acrylic adhesive composition comprising a mixture of at least one polyol tri(meth)acrylate monomer and at least one polyalkylene glycol mono(meth)acrylate monomer for assembling elements made of plastic materials, like PMMA or SAN, or inorganic material, like glass or metals, employed for manufacturing of devices for the distribution or containment of biological substances, like proteins, enzymes, antibodies, antigens, DNA, and the like. The present invention also relates to devices for the distribution or containment of biological substances assembled with the above mentioned acrylic adhesive composition, and particularly thermal or piezoelectric ejecting devices, and biochip microarray, as well as to a method for assembling thereof.

Abstract: An injection system for injecting fuel has: a housing for containing the fuel, with a first and second aperture, a piezo actuator having a first and second face plate aperture, a controllable piezo stack arranged between the face and base plate, a sealed casing laterally surrounding at least the piezo stack and arranged between the face and base plate and a transmission means arranged in an actuator interior space having a fluid, a first contact device guided through the first aperture and face plate aperture, a second contact device guided through the second aperture and face plate aperture, a first sealing device surrounding the contact device near the apertures and providing a seal between the housing interior and exterior space and a second sealing device surrounding the contact devices near the face plate apertures and providing a seal between the housing interior space and the actuator interior space.

Abstract: A fuel injector for an internal combustion engine, particularly of inwards or outwards opening needle injector type, includes an injector body, e.g., forming a nozzle ending in an injection office, a mechanism for closing off the injection orifice of the injector body, the closing-off mechanism including a vibrating pintle ending in a head for closing off the injection orifice, a return mechanism returning the closing-off to the position in which they close off the injection orifice, and a mechanism for setting the pintle and/or the nozzle into cyclic longitudinal vibration so as to open and close the injection orifice alternately. The fuel injector includes a selectively activatable mechanism immobilizing the pintle with respect to the body.

Abstract: The present invention discloses a nebulizing apparatus comprising an outer housing, a reservoir, a nebulizing unit, a chassis, a control unit and a power supply unit. The reservoir is disposed in the accommodation space of the outer housing and provided for storing a solution. The nebulizing unit is disposed in the reservoir for nebulizing the solution stored in the reservoir to generate a plurality of nebulized particles. The chassis is disposed between the reservoir and the outer housing. The control unit is disposed on the chassis and electrically connected to the nebulizing unit for controlling the vibration frequency required by the nebulizing unit to nebulize the solution. The power supply unit is disposed on the chassis and connected with the control unit, and provides the required power and electronic signals to the nebulizing unit through the control unit.

Abstract: A liquid discharge device (1) has a pressure chamber (3), a nozzle (4), and a communication path (5) that interconnects the pressure chamber (3) and the nozzle (4). A region that has a specific length L1 and lies from the position (8) of the boundary between the communication path (5) of the pressure chamber (3) toward the nozzle (4) is formed as a narrow section (9) that has an opening area S1 smaller than the opening area S0 of a region closer to the nozzle (4) than the narrow section (9).

Abstract: A fuel injector for delivering fuel to an engine in which a housing of the injector has an internal fuel chamber and at least one exhaust port in fluid communication with the fuel chamber whereby fuel exits the fuel injector at the at least one exhaust port for delivery to the engine. An ultrasonic waveguide is separate from the housing, and is elongate and disposed at least in part within the fuel chamber to ultrasonically energize fuel within the fuel chamber prior to the fuel exiting through the at least one exhaust port. An excitation device is operable to ultrasonically excite the ultrasonic waveguide. A mounting member interconnects the waveguide to the housing, with the mounting member configured to substantially vibrationally isolate the housing from the waveguide.