Abstract: A linear compressor includes a cylinder, a piston axially reciprocating in the cylinder, a first muffler unit coupled to the piston, a back cover that is disposed at a rear of the piston and defines an opening at a radially central area, and a second muffler unit coupled to the opening. The first muffler unit includes an inner guide disposed in the piston and a first intake muffler disposed at a rear of the inner guide. The second muffler unit includes a second intake muffler that communicates with the first intake muffler and is coupled to the opening, a muffler body surrounding the second intake muffler, and a muffler cover disposed between the muffler body and the back cover.

Abstract: An optical component mount includes a fixed portion and a movable portion, the mount being configured to support at least one optical component, the fixed portion and the movable portion being mechanically connected to each other by a flexible articulation which is capable of allowing the movable portion to move relative to the fixed portion. The mount includes a cooling circuit which is integrated into the fixed portion, the movable portion and the articulation and which is capable of allowing a fluid to flow inside the mount, the cooling circuit including a fluid inlet hole and a fluid outlet hole, the fluid inlet hole and the fluid outlet hole being arranged on the fixed portion.

Abstract: A reciprocating compressor includes a suction muffler including a partition wall that partitions an inner space of the suction muffler into multiple spaces. The suction muffler further includes a guide pipe that is provided at the partition wall and that defines a resonance hole configured to reduce noise in a specific band.

Abstract: Various embodiments concern a handheld paint sprayer for spraying a paint. The sprayer can comprise a shell body comprising a door that, when opened, exposes an opening into an interior of the shell body, the door configured to close over the opening. The sprayer can further comprise a trigger connected to a handle, a motor in the interior, and a paint reservoir connected to the shell body. The sprayer can further comprise a nozzle in fluid communication with the reservoir and a pump located in the interior of the shell body. The pump is operated by the motor, the pump configured to pump the paint from the reservoir out of the nozzle as a spray. The pump is removable from the interior of the shell body through the opening when the door is opened but is not removable through the opening when the door is closed.

Abstract: Systems to drive a downhole pump include an enclosure body with a magnetically transparent wall. A magnetic driver or a stationary member with coil windings in slots is disposed outside the enclosure body. A magnetic follower or a movable member with one or more permanent magnets is disposed inside the enclosure body such that the magnetic follower or movable member is exposed to a different environment compared to the magnetic driver or stationary member. The magnetic driver and magnetic follower, or the stationary member and movable member, are separated by a gap containing at least a portion of the magnetically transparent wall. A prime mover is operatively coupled to the magnetic driver. A rod couples the magnetic follower or the movable member to the downhole pump. Movement of the rod with the magnetic follower or the movable member operates the pump.

Abstract: A bilaterally driven drug infusion device with multiple infusion modes comprises: a drug storage unit (150); a piston (160) and a driving wheel (130,630) respectively connected with a screw (170), the driving wheel (130,630), provided with wheel teeth (131,631), drives the screw (170) movement by rotation, the piston (160) is arranged in the drug storage unit (150), the screw (170) advances the piston (160) to move; a driving unit (100,200,300,400,500,600) cooperating with the driving wheel (130,630); and a power unit (180,680), connected to the driving unit (100,200,300,400,500,600), outputs forces in two different directions (A?,B?) on the driving unit (100,200,300,400,500,600) to lead driving unit (100,200,300,400,500,600) to perform multiple-mode operation, making the infusion device have multiple infusion increments or infusion rates.

Abstract: A sand collector including a diverter section and a filter section. The diverter section has a tubular portion with at least one aperture extending therethrough and at least one collector extending outwardly therefrom to cooperate with an exterior side of the tubular portion to form a channel in which solids traveling on the exterior side of the tubular portion from the upper end toward the lower end are guided to the aperture. The filter section having a tubular portion with an upper end, a lower end, and a sidewall extending between the upper end and the lower end. The filter section having at least one aperture extending through the sidewall, the upper end of the filter section extending from the lower end of the collector section and the lower end of the filter section being closed and connectable to at least one of another sucker rod and an upper end of a pump assembly.

Abstract: An air compressor improves the dustproof performance of an intake path to a crankcase. The air compressor includes a compression assembly that reciprocates a piston in a cylinder to produce compressed air, a crankcase accommodating the compression assembly and having an inner inlet to allow outside air to be drawn, a filter located in the crankcase and covering the inner inlet from outside, a filter cover having an outer inlet and covering the filter from outside, and a dust cover covering the filter cover from outside, covering the outer inlet, and including an outer circumferential portion. The outer circumference portion and the filter cover have a space to draw outside air between the outer circumference portion and the filter cover.

Abstract: A liquid sending system includes a plurality of liquid sending pumps that operate independently from one another and send a mobile phase into a common flow path, a pressure sensor for detecting a liquid sending pressure in the flow path, and a liquid sending failure detector configured to detect a liquid sending failure caused by any of the plurality of liquid sending pumps by periodically acquiring a liquid sending pressure detected by the pressure sensor and detecting a fluctuation of the liquid sending pressure associated with a driving period of each of the plurality of liquid sending pumps.

Abstract: Compressor head fixing device, a compressor and a refrigeration device. The compressor head fixing device includes a cylinder block and a cylinder head cover, the cylinder head cover being connected to the cylinder block by a fastener, the cylinder block being provided with a compression chamber and an assembly hole configured to fix the fastener; a noise reduction chamber, provided on the cylinder block; and a communication passage, provided in the cylinder block and the cylinder head cover, and being in communication with the assembly hole, the noise reduction chamber and the compression chamber. The compressor head fixing device has a compact structure, a length of the exhaust passage is shortened and the exhaust pressure is reduced.

Abstract: A reconfigurable capillary liquid chromatography system includes a solvent delivery manager including a first solvent pump assembly including a first pump housing or mount. A base module is further provided including a base module housing which is user accessible, or a base module bracket, and an injection valve for sample injection to a liquid chromatography column. The injection valve has an inlet port for receiving a sample and the injection valve is mounted in or on the base module housing or the base module bracket. The solvent delivery manager is configured to deliver solvent to the injection valve. A reconfigurable control system is also provided for controlling the reconfigurable capillary liquid chromatography system.

Abstract: A method for filling an actuator in a gearbox fills the actuator only when the gearbox is in a passive state by virtue of fluid being introduced into an armature space of the actuator by way of axial movements of an armature rod when the actuator has been fluidically connected to a fluid-filled fluid space of the gearbox.

Abstract: A compressor includes: a case, a compression unit that is provided inside the case and that includes a cylinder and a piston configured to reciprocate inside the cylinder to compress refrigerant, a driving unit that includes a stator disposed inside the case and a plurality of permanent magnets configured to reciprocate with respect to the stator and that is configured to provide a driving force to the compression unit, and a resonator that is configured to reduce noises generated while the compression unit is operated, that is disposed between the compression unit and an inner surface of the case facing the compression unit in an axial direction, and that is spaced apart from the compression unit.

Abstract: A hydraulic pressure supply unit has a storage chamber which stores hydraulic fluid, a hydraulic pump which is arranged within the storage chamber and dips at least partially into the stored hydraulic fluid, and an electric motor which drives the hydraulic pump. The electric motor is arranged below the hydraulic pump in a separate motor chamber which is situated below the storage chamber, is dry, and is not connected fluidically to the storage chamber. The electric motor is coupled in a thermally transmitting manner to a separating floor, the upper side of which delimits the storage chamber and is wetted continuously with stored hydraulic fluid.

Abstract: A paint sprayer includes an end bell, a motor connected to the end bell, a pump drive connected to the end bell, a pair of protrusions attached to an extending from the end bell such that each protrusion is cantilevered from the end bell, and a pump assembly comprising a pair of mounting holes and containing a piston. The pair of mounting holes is adapted to receive and slide onto the pair of protrusions to mount the pump assembly on the end bell as well as slide off of the pair of protrusions to remove the pump assembly from the end bell. The pump drive is configured to covert rotational motion output by the motor to reciprocal motion. The pump assembly is configured to pump paint when reciprocated by the pump drive while mounted on the end bell.

Abstract: Automatic electric actuation of the pump of a liquid dispenser apparatus is provided by a stepper motor having a threaded hollow liquid-conducting tube positioned therein and configured such that motor drives the hollow tube up and down in response to supply of a plurality of electrical pulses thereto. A lower end of the hollow tube is constructed to inter-fit with a stem of the pump such that driving the hollow tube up and down creates a pumping action.

Abstract: An air compressor contains: a body, a cylinder, a motor, and a transmission mechanism. The body includes multiple positioning orifices which are a first positioning orifice and a second positioning orifice. The cylinder is connected on the body and communicates with an air storage holder. The motor is fixed on the body, a small gear is received in the first positioning orifice, and a connection seat of the motor is accommodated in the first orifice. The transmission mechanism actuates the piston to move in the cylinder reciprocately so as to produce compressed airs. The motor further includes multiple fixing portions extending from a head edge of the casing thereof and configured to engage with the body, thus fixing the motor on the body securely without using any screws.

Abstract: In some examples, a system can include an electronic device and a cooling system that transfers heat among other components of the system. The cooling system can include a pipe that contains a fluid, for example. In some examples, the cooling system can further include a magnetic piston, one or more electromagnetic coils, and a power supply. The electromagnetic coils and power supply can generate a magnetic field that moves the piston to cause the fluid to circulate in the fluid pipe. In some examples, the cooling system can further include a magnet and one or more pairs of electrodes coupled to a power supply. The magnet, electrodes, and power supply can generate a Lorentz force that causes a conductive fluid to circulate in the fluid pipe.

Abstract: A method of monitoring wear of a buffer includes holding a pipe for transporting a fluid and an electrical cable using a buffer placed on a support plate. The buffer includes a base, a plurality of fingers, and a roller contacting the support plate. The plurality of fingers includes a first finger, a second finger, and a third finger. The first finger and the second finger define a first cavity for receiving the pipe, and the second finger and the third finger defines a second cavity for receiving the electrical cable. The method includes detecting acoustic waves generated by the roller on the support plate. The method further includes analyzing changes in frequencies of the acoustic waves to determine an extent of the wear of the roller over time. The method includes triggering an alert when an increase in the frequencies of the acoustic waves exceeds a pre-determined threshold value.

Abstract: A pump fluid end comprising a discharge valve assembly comprising a discharge valve seat and a discharge valve body, a suction valve assembly comprising a suction valve seat and a suction valve body, and a reciprocating element, wherein an inside diameter of the discharge valve seat is greater than an outside diameter of the suction valve body, the suction valve seat, the reciprocating element, or a combination thereof.

Abstract: An electric oil pump with an one-way valve is provided, which includes a control box. The control box is provided with a communication pipe and a control board, one end of the communication pipe is connected with an oil-extracting pipe, the other end is connected with an oil outlet pipe, a pump body is arranged in the oil outlet pipe, and a bottom of the control box is rotatably installed with a threaded cap. When the oil pump is, working, the gasoline is blocked by the one-way valve and transported to the oil outlet pipe via the oil-extracting pipe during the oil delivery process, and the negative pressure in the oil drum makes the outside air enter into the oil drum through the one-way valve when the oil pumping is completed, so as to maintain the pressure balance between the inside and outside of the oil drum.

Abstract: A washing machine and a control method thereof are provided. More particularly, a washing machine of supplying a detergent automatically to a detergent mixing tub using a detachable detergent supply container, or of supplying a softening agent automatically to a softening agent mixing tub using a detachable softening agent supply container, and a method of controlling the washing machine are disclosed. Some of the disclosed embodiments provide a washing machine of supplying a detergent automatically to a washing tub using a detergent supply unit with a detergent supply container, and of supplying a softening agent automatically to the washing tub using a softening agent supply unit with a softening agent supply container, and a method of controlling the washing machine.

Abstract: A powered well string positioner capable of actuation during the vertical reciprocal movement of a well string will increase or decrease the length of the downhole well string length below the wellhead seal upon detection of a string positioning condition within the tubular by a controller. The vertical reciprocal stroke of the power unit of the well is not changed as the downhole length of the well string is varied, and the well string can be adjusted during operation of the well without the need to disassemble the well string.

Abstract: A buffer for holding a pipe adapted to transport a fluid is provided. The buffer includes a base, a plurality of fingers extending outwardly from a first side of the base. A first finger of the plurality of fingers and a second finger of the plurality of fingers define a cavity for receiving the pipe. The buffer further includes at least one roller on a second side of the base opposite the first side.

Abstract: A paint sprayer includes an end bell, a motor connected to the end bell, a pump drive connected to the end bell, a pair of protrusions attached to an extending from the end bell such that each protrusion is cantilevered from the end bell, and a pump assembly comprising a pair of mounting holes and containing a piston. The pair of mounting holes is adapted to receive and slide onto the pair of protrusions to mount the pump assembly on the end bell as well as slide off of the pair of protrusions to remove the pump assembly from the end bell. The pump drive is configured to covert rotational motion output by the motor to reciprocal motion. The pump assembly is configured to pump paint when reciprocated by the pump drive while mounted on the end bell.

Abstract: In a linear motor and the linear compressor having the same according to the present disclosure, a plurality of magnets are coupled to a stator equipped with a winding coil, and a mover core made of magnetic material instead of a permanent magnet is provided on the mover, and by the magnetizing plurality of magnets in the same direction, the motor output can increase by increasing thrust instead of decreasing the centering force for the mover core. In addition, as it is applied to a two-pore motor, it is possible to easily control the mover core and to easily perform an assembly operation and a magnetization operation for the magnet. In addition, as the stator is made of a grain-oriented core, core loss may be reduced and the motor efficiency may be improved.

Abstract: In one or more embodiments, a liquid management system may include multiple impellers; multiple liquid transfer lines; a first impeller system that includes a first impeller of the multiple impellers; a second impeller system that includes a second impeller of the multiple impellers; and a shaft, coupled to the first impeller system and coupled to the second impeller system and configured to transfer the at least the portion of the energy to the second impeller system. The liquid management system may be configured to be coupled to an information handling system. The first impeller system may be configured to harvest, via rotation of the first impeller, energy from a flow of a liquid. The second impeller system may be configured to create pressure difference between two of the multiple liquid transfer lines coupled to the second impeller system.

Abstract: A manual-electronic pipetting device for pipetting a medium. The pipetting device includes a controller, a manually displaceable actuating element, at least one piston for aspirating and discharging the medium, a motor for driving the at least one piston in response to an actuation and/or displacement of the actuating element, at least one sensor for determining a displacement of the actuating element, and a data storage. The controller determines a pipetting protocol based on at least one sensor signal of the at least one sensor during a displacement of the actuating element, the controller further storing the pipetting protocol in the data storage, the pipetting protocol including data records indicative of a position and a speed of the at least one piston during the displacement of the actuating element.

Abstract: A cylinder block for a compressor includes: a shaft support configured to support a rotary shaft of an outer rotor type motor; a first support that is arranged radially outward of the shaft support and that extends along a circumferential direction about a center of the shaft support; a second support that is arranged radially outward of the first support and that extends along the circumferential direction about the center of the shaft support; a third support that connects the first support to the second support; a cylinder portion that defines a cylindrical inner space at a position radially away from the center of the shaft support; and a noise chamber defined at at least one side of the cylinder portion.

Abstract: A reciprocating compressor includes a piston slidably mounted within a compression chamber and defining a suction port for receiving a flow of gas. A flex mount is mechanically coupled to the piston and has an inner surface that defines a suction cavity. A suction muffler is positioned at least partially within the suction cavity and includes an inlet tube extending along the axial direction within the suction cavity and defining an inlet passageway configured to receive the flow of gas and a plurality of chamber plates that extend along the radial direction from an outer surface of the inlet tube, the plurality of chamber plates and the flex mount defining a plurality of resonance chambers to reduce compressor noise.

Abstract: A displacement magnifying device includes a diaphragm structure including a substrate and a diaphragm provided separately from the substrate, actuators provided side by side with the diaphragm structure, and a first member including displacing sections coupled to both ends of the actuators and displaced according to displacement of the actuators. The displacing sections are coupled to the diaphragm of the diaphragm structure.

Abstract: A fluid moving apparatus includes an electric motor having a rotor and a stator and a fluid displacement member. The rotor rotates relative to the stator on a common axis to generate a rotational output. The rotational output is provided to the fluid displacement member to power the fluid displacement member to one of move linearly along and rotate about the common axis. The stator includes one or more coils configured to power rotation of the rotor. The one or more coils extend circumferentially around and can be coaxial on the common axis.

Abstract: A pump system includes a pump barrel disposed within a housing. A standing valve is disposed at a first end of a pump chamber defined within the pump barrel. A traveling valve is disposed at a second end of the pump chamber. The traveling valve is movable relative to along an axial axis and relative to the housing. A motor stator is disposed inside the housing. produces a rotating electromagnetic field upon receiving electrical power. A motor rotor is rotatably supported within the motor stator and rotates about the axial axis in response to the rotating electromagnetic field. A traveling plug is coupled to the valve body of the traveling body and arranged to move linearly along the axial axis in response to rotation of the motor rotor. The pump system can be disposed in a wellbore to lift fluids up a tubing in the wellbore.

Abstract: A method of mounting a bearing to an air compressor including a shaft element having a first end defining a central cylindrical recess and a second is disclosed, which includes the steps of: fixing the second end of the shaft element to a center of a gear; inserting the first end of the shaft element through a central hole of a bearing to have an annular step of the shaft element abutted an inner ring of the bearing; and hitting the first end of the shaft element by a striking tool with a central pin to form an outwardly extending rim on the first end of the shaft element. With the method, the bearing can be firmly fixed between the outwardly extending rim and the annular step of the shaft element.

Abstract: Non-limiting exemplary embodiments of a pumping system and methods for operating the pumping system in a region of high pressure or a region of high flow are disclosed. The pumping system includes a piston disposed within a piston cylinder, a drive shaft, an eccentric coupled to the drive shaft, a connecting arm having opposing first and second ends, and a controller for controlling the rotation of the drive shaft such that the piston oscillates within a region of high pressure or a region of high flow.

Abstract: A device for spraying a fluid on a vehicle camera includes a flow passage for connecting a suction portion with a discharge portion; a cylinder for communicating a pressure chamber in front of a piston with the flow passage; a drive mechanism for the piston including a motor; a first valve located between the suction portion and the pressure chamber, and functioning such that the first valve opens when the piston moves backward and closes when the piston moves forward; a second valve located between the pressure chamber and the discharge portion, and functioning such that the second valve opens when a pressure in the pressure chamber reaches a predetermined value by a forward movement of the piston; and a casing for housing the flow passage, the cylinder, the drive mechanism, the first valve, and the second valve to be combined with the vehicle camera.

Abstract: A piston pump assembly for a hydraulic power vehicle braking system including an electric motor, a planetary gear, a worm gear, and a piston displaceable in a cylinder. For an anti-rotation protection of the piston in the cylinder, the piston includes a ring rotationally-fixed thereto by a form fit and connected thereto by forming, including semicircular grooves at its outer circumference, in which cylinder pins engage, which are situated fixed axially-parallel in the cylinder.

Abstract: A positioning structure of a motor of an air compressor contains: a base, a cylinder, the motor, and a transmission mechanism. The base includes a first locating orifice and a second locating orifice. The cylinder includes an air storage seat. A small-diameter gear is fitted on the motor via the first locating orifice. A bearing housing of the motor is accommodated in the first locating orifice. The transmission mechanism actuates a piston to move in the cylinder reciprocately. The base includes two symmetrical elongated plates having two hooks respectively and includes two symmetrical arcuate retainers. An outer wall of the motor is retained by the two symmetrical arcuate retainers, and the two hooks are engaged with the magnetic coil.

Abstract: A connection structure for a motor of an air compressor contains: a base, a cylinder, a motor, and a transmission mechanism. The base includes a first positioning orifice and a second positioning orifice. The cylinder includes an air storage seat. A small-diameter gear is inserted through the first positioning orifice to fit on the motor, a bearing housing is accommodated in the first positioning orifice, and the motor includes a magnetic coil. The transmission mechanism actuates a piston to move in the cylinder reciprocately so as to compress air. The magnetic coil includes a first segment and a second segment, and the base includes two symmetrical elongated plates which respectively have two hooks. The base further includes two symmetrical arcuate retainers.

Abstract: A medical plunger pump and a chamber structure thereof. The chamber structure includes a barrel, where the barrel is provided with at least one cylindrical chamber which includes a piston working section in which a piston is able to reciprocate and a joint section where the piston is connected to a push rod. The joint section includes a first arc section that protrudes from the piston working section, where a first end of the first arc section is smoothly connected to a side wall of the piston working section, and a second end of the first arc section is bent and extendable along an axis of the piston working section. The medical plunger pump includes the above-mentioned chamber structure.

Abstract: A vehicle driving apparatus including: a rotating machine including a rotor and a stator; a motor case storing therein the rotating machine and fastened to a non-rotary member; and an intermediate member including (i) a main body having a flat plate shape and (ii) a protrusion which protrudes in a direction of an axis of the rotating machine from a surface of the main body on a side of the rotating machine and which has an annular shape surrounding the axis. The protrusion of the intermediate member includes a plurality of stator fastening portions through which the stator of the rotating machine is fastened to the intermediate member. The intermediate member is fastened to a high rigidity portion of the motor case that has a higher rigidity than the other portion of the motor case.

Abstract: A gas compressor, wherein the gas compressor can be used for compressing gas, vapor, or combinations thereof. The gas compressor includes a drive power section and a dual activating compressor section. The gas compressor can be used in a system for compressing gas, vapor, or combinations thereof.

Abstract: Uneven wear causes degradation of the individual parts of a syringe pump. Specifically, a seal piece composed of a soft material is easily damaged by uneven wear. To solve this problem, an automatic analysis device has a syringe pump that feeds and aspirates a liquid into and from a dispensing unit. The syringe pump has a syringe tube that stores a liquid, a plunger that moves up and down in the syringe tube, a plunger upper pressing component that contacts the plunger, a motive force transmitting part that transmits motive force to the plunger via the plunger upper pressing component, and a plunger lower pressing component that contacts the motive force transmitting part. The plunger upper pressing component and the motive force transmitting part make point contact with each other, and the motive force transmitting part and the plunger lower pressing component make point contact with each other.

Abstract: A compressor includes: a case, a piston, an elastic member, and a drive. The piston in the case moves along an axis direction. The elastic member in the case applies a force to the piston to move the piston in the axis direction toward a first side of the case. The drive causes the piston to move in the axis direction toward a second side of the case. The piston includes a rack extending in the axis direction. The drive includes: a motor, and a pinion that rotates in accordance with the motor, and that is engaged with the rack. The pinion includes: first and second toothed regions each having a pinion tooth; and first and second flat regions having no pinion tooth. A number of the pinion teeth formed on the first toothed region is greater than a number of the pinion teeth formed on the second toothed region.

Abstract: A refrigerant compressor includes: an electric component; and a compression component driven by the electric component to compress a refrigerant. At least one sliding member constituting the compression component is made of a base material (185) that is an iron-based material. An abrasion resistance film (180) including a surface layer constituted by at least fine crystals is formed on a sliding surface of the sliding member. The surface layer (181) includes an A portion in which a component contained most is diiron trioxide (Fe2O3). The A portion exists within a range of at least 0.3 ?m or less from an outermost surface of the sliding surface. The abrasion resistance film (180) may include at least one intermediate layer (182 to 184) located between the surface layer (181) and the base material (185). With this, self-abrasion resistance of the sliding member can be improved, so that the refrigerant compressor having excellent reliability and efficiency can be obtained.

Abstract: A diaphragm pump has: a housing; a piston; a shaft; a rolling diaphragm, which is configured so that a lid portion reciprocally moves integrally with the piston; a driving device, which can convert rotational movement of a motor section to linear movement, and output the linear movement from an output axle to the shaft; a guiding member; and a restricting mechanism. The guiding member is placed on another axial end side of an interior of the housing with respect to the piston, attached to the housing, and able to guide the shaft movably in the axial direction. The restricting member is disposed in the housing and between the guiding member and the shaft, and able to restrict rotation of the shaft about the axis while allowing reciprocal movement in the axial direction.

Abstract: A gas transportation device includes a casing, a nozzle plate, a chamber frame, an actuator, an insulating frame and a conducting frame, which are stacked sequentially. The casing has a conduit protruding outwardly from the casing and aligned with a discharging opening. The conduit has a guiding channel and an outlet. The guiding channel has a cone shape and is tapered from an end proximate to the discharging opening to the other end proximate to the outlet. The actuator, the chamber frame and the suspension plate collaboratively define a resonance chamber. When the actuator is driven, the nozzle plate is subjected to resonance and the suspension plate of the nozzle plate vibrates in a reciprocating manner. Consequently, the gas is transported to a gas-guiding chamber through at least one gap and outputted from the discharging opening.

Abstract: A gas transportation device includes a casing, a nozzle plate, a chamber frame, an actuator, an insulating frame and a conducting frame, which are stacked sequentially. A cuboidal resonance chamber is defined by the actuator, the chamber frame and a suspension plate of the nozzle plate collaboratively. When the actuator is driven, the nozzle plate is subjected to a resonance and the suspension plate of the nozzle plate vibrates in the reciprocating manner. Consequently, the gas is transported to a gas-guiding chamber through at least one interspace and discharged from the discharging opening so as to implement the gas circulation.

Abstract: A multistage compressor is disclosed that may include a wobbling member operationally coupled with an external power source. The external power source may drive a nutating motion of the wobbling member. The multistage compressor may further include a plurality of flexible chambers connected to the wobbling member, each flexible chamber including a respective intake passage and a respective discharge passage. The wobbling member may sequentially press down and pull up the plurality of flexible chambers. The multistage compressor may further include a one-way valve in each respective intake passage and gas may be drawn into each flexible chamber through the respective one-way valve of each flexible chamber as the wobbling member pulls up each flexible chamber. The gas may then be compressed to a higher pressure as the wobbling member presses down each flexible chamber and compressed gas may be discharged through the respective discharge passage of each flexible chamber.

Abstract: A method for discharging fluid from a syringe and for mitigating occlusion conditions includes actuating the plunger of a syringe into a barrel. The method monitors fluid pressure within the barrel of the syringe and determines that an occlusion exists when the fluid pressure exceeds a predetermined threshold. The method actuates the plunger out of the barrel by a predetermined amount in response to the detected occlusion and actuates the plunger of the syringe into the barrel until a measured fluid pressure within the barrel of the syringe exceeds another predetermined threshold.