Abstract: A fluid transporting device is provided with a pump chamber that has a pump function for sucking and discharging a fluid, and is filled therein with the fluid, a casing unit which forms one portion of a wall surface of the pump chamber, a diaphragm which is formed by a conductive polymer film that is subjected to electrochemomechanical expansion and contraction, and forms one portion of the wall surface of the pump chamber, an electrolyte chamber that contains an electrolyte therein, with one portion of the electrolyte being made in contact with the diaphragm, a power supply that applies a voltage to the diaphragm, and a pressure maintaining unit that maintains a pressure to be applied to the diaphragm.

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: An electro-active, valveless pump having a pumping chamber with at least one chamber wall. There is at least one opening in the at least one chamber wall. An electro-active actuator is located over each of the openings for inducing fluid flow.

Abstract: A heat dissipation apparatus includes a heat sink defining a plurality of air passages therein, and an airflow generator arranged on the heat sink and including a plurality of airflow-generating units. Each airflow-generating unit includes a casing, and a vibration diaphragm and a driving member arranged in the casing. The vibration diaphragm divides an inner space of the casing into first and second chamber isolated from each other. The second chamber communicates with the exterior via an orifice defined in a bottom wall of the casing. The driving member is capable of vibrating the vibration diaphragm when alternating voltage is applied thereto. When the driving member vibrates the vibration diaphragm towards the bottom wall of the casing, the vibration diaphragm compresses the air inside the second chamber of the casing towards the orifice, generating airflow from the orifice to the air passages of the heat sink.

Abstract: The invention relates to a device provided with channel-type structures for transporting and/or storing a liquid and/or gaseous medium. The device comprises a first (1) substrate layer and a second substrate layer (2), and a functional element (3) that is sandwiched between the first and second substrate layers, the channel-type structures being embodied in the first and/or second substrate layer. The first and second substrate layers are solidly and permanently interconnected, and the functional element is clamped between the first and second substrate layers. The functional element is elastic, the first and second layers are rigid, and the channel-type structures in the first and/or second substrate layers are at least partially sealed in a gas-tight and/or liquid-tight manner due to the functional element.

Abstract: In accordance with the method, a gas bearing is energized to center the piston in the cylinder prior to rigidly attaching the planar spring or springs between the piston and the compressor frame. This automatically and very accurately centers the piston in the cylinder to provide the added stiffness of a planar spring and gas bearing in an easily manufactured configuration. Various exemplary embodiments are disclosed, including embodiments having the piston cantilevered from one end using a single or multiple springs, an embodiment having a spring on each end of the piston, a double piston embodiment and embodiments using and not using the gas bearing during operation of the compressors.

Abstract: The invention relates to a metering pump assembly for admixing a fluid reduction agent into an exhaust gas flow with a metering pump for delivering the reduction agent and with a premixing device, in which in a mixing region, the reduction agent delivered by the metering pump is mixed with a pressurized gas, wherein the metering pump assembly comprises a pump head with a central plate in which at least the metering pump and the premixing device are arranged.

Abstract: A piezoelectric-driven diaphragm pump is comprised of a driving unit (1) having a driving diaphragm (12) and a first housing (11), a replaceable driven unit (2) having a driven film (241) and a second housing (21), and a fixing unit (3) for fixing the driven unit (2) to the driving unit (1). A vibration transmitting face (14) of the driving diaphragm (12) from which displacement of the driving diaphragm (12) is transmitted to the driven film (241) and a vibration transmitted face (241a) of the driven film (241) to which the displacement of the driving diaphragm is transmitted are not parallel to a reference plane (11b) of the first housing (11) which faces the second housing (21), and the vibration transmitting face (14b) of the driving diaphragm (12) contacts with entire of the vibration transmitted face (241a) of the driven film (241). Thereby, the displacement of the driving diaphragm (12) is efficiently transmitted to the driven film (241), so that a capacity of a pump room (25) can be varied largely.

Abstract: A diaphragm pump for a pumped shower waste, comprises a diaphragm housing (12), a diaphragm (34) removably held in the diaphragm housing (12), an openable cover (16) on the diaphragm housing (12) for accessing the diaphragm (34), an electric motor (14), a connecting member (40) positioned in the diaphragm housing (12) and movable by the electric motor (14), and a non-screw-threaded twist and lock fastener (62) which releasably engages the diaphragm (34) with the connecting member (40). The diaphragm (34) can thus be disengaged and removed from the connecting member (40) without the use of a screwdriver.

Abstract: A pumping system comprising a membrane pump (1) for pumping a medium, the membrane pump comprising: -a pump housing (2), -a membrane (3), which is mounted to the pump housing and delimits a pump chamber (4) inside the pump housing, -actuating means for moving the membrane to and fro in order to expand and contract the pump chamber, wherein the actuating means are adapted to operate, in a first operating mode, to move the membrane in a frequency suitable for pumping a medium into and out of the pump chamber, and in a second operating mode, to move the membrane in a frequency in the audible frequency region.

Abstract: An opening 22d of a supply/withdrawal passage 22b is positioned at the center part of the internal wall surface 22c of the operating chamber 26 (concave area 22a), and a pin 24 that protrudes toward the diaphragm 23 is provided in a position that is offset from the center of the wall surface 22c. When the diaphragm 23 is deformed toward the operating chamber 26 by the suction of an operation air into the operating chamber 26 during drawing in the chemical liquid, a part of the diaphragm 23 opposing to the pin 24 rides on the pin 24 and this part becomes a slightly convex shape toward the pump chamber 25. When the operation air is supplied from the opening 22d into the operating chamber 26 during the discharge of the chemical liquid, the deformation begins first from the part of the diaphragm 23 riding on the pin 24.

Abstract: The invention provides a pump assembly comprising an actuator lever, a supporting structure, a pump comprising a pump member moveable by actuation of the actuator lever, and an actuator for moving the actuator lever. A first stationary pivoting joint is formed between the actuator lever and the supporting structure, and a second floating pivoting joint is formed between the actuator lever and the pump member allowing the pump member to float relative to the actuator lever, the floating pivoting point providing a constant-length actuator arm defined between the first pivoting joint and the second pivoting joint.

Abstract: The pulse pump is driven by an electric motor and gear reduction driving an eccentric rotor, which, in turn, oscillates a mechanism actuating a diaphragm to transfer fluid through one-way check valves. The pump may be used in a number of different applications, but is particularly useful in applying biodegradation material to consume grease and other biodegradable matter typically found in drainage systems of food processing facilities, converting such matter into carbon dioxide and water. The device includes a system for placing the mechanism in a neutral position when the pump is deactivated, to avoid causing the diaphragm to take a set toward either extreme of travel when parked for an extended time. One embodiment incorporates a multiple piece actuator assembly having a diaphragm sandwiched between components. Another embodiment uses a single piece actuator having a circumferential groove, with the diaphragm having a toroid configuration and attaching within the groove.

Abstract: A diaphragm type pressurized pump comprises a hollow cylinder formed on the top surface of each piston acting region of the diaphragm sheet. A piston head pushing chunk is disposed on the diaphragm sheet such that a ladder hole in the piston head pushing chunk receives the hollow cylinder. A fixing screw is driven via the center of the hollow cylinder into the threaded hole on each wobble plate. As a result of driving the fixing screw, the upper portion of the hollow cylinder expands thereby deforming and filling up the space between the bottom surface of the head of the fixing screw and the top surface of the ladder hole of the piston head pushing chunk, and thus preventing water from leaking and seeping into the motor of the pump.

Abstract: A diaphragm pump (1) having two diaphragm heads (15), in each case two diaphragms (6) and two separate pump housings (3) in which the connecting rods (5) for the diaphragms (6) are arranged, which connecting rods (5) can be driven by a common shaft (4). The drive for the shaft (4) can be arranged between the two pump housings (3). Here, the two pump housings (3) are connected to one another in an air-permeable fashion in particular by a connecting line (7), such that the air displaced in each case by the one diaphragm (6) can be moved into the other pump housing (3) in which the associated diaphragm (6) leads to a space enlargement as a result of being driven in the opposite direction.

Abstract: Embodiments of the invention provide a double action simplex pump including a pump body with a first half and a second half joined together to form an enclosed cavity. The first half includes a first pipe member and the second half includes a second pipe member. A first end of the first pipe member is a fluid inlet port and a second end of the second pipe member is a fluid outlet port. The enclosed cavity defines a first pocket and a second pocket each in fluid communication with a first lumen of the first pipe member and a second lumen of the second pipe member. A first valve assembly is positioned in the first pocket and a second valve assembly is positioned in the second pocket. Each of the first valve assembly and the second valve assembly includes a valve casing supporting an inlet poppet valve, an outlet poppet valve, and a central opening located between the inlet poppet valve and the outlet poppet valve. The central opening is aligned with one of a plunger and a diaphragm.

Abstract: A micro air delivery device for supplying air to a predetermined space, comprises a jet unit for obtaining and delivering outside air; a cover having a discharge orifice for discharging the outside air delivered from the jet unit; and a base unit connected to the jet unit. Since a valve is not employed to regulate the air supply or delivery, the air delivery device is superior in safety, is of simplified construction, and efficient. Furthermore, the air flow can be controlled by varying the electric current or the frequency, and accordingly, an active delivery of the air is possible.

Abstract: In a constant rate discharge pump, a rotary drive source is disposed on an end of a housing, and on the other end of the housing, a pump head is provided, having a pump chamber into which a fluid is drawn, and a filling chamber filled with an indirect medium. Further, a displacement mechanism having a displacement nut which is displaced under a driving action of the rotary drive source is disposed in the interior of the housing. A bellows is interposed between a tubular body connected to the displacement nut and a first block of the pump head, wherein the interior of the bellows also is filled with the indirect medium, which is made up from an incompressible fluid. Furthermore, a flexible diaphragm is disposed in the pump head between the fluid and the indirect medium.

Abstract: A reciprocatory fluid pump includes an armature assembly which is reciprocatably mounted to the housing by a pair of spaced leaf springs extending parallel to each other and fixed at their opposite ends to the armature assembly and housing, respectively, so as to define therewith a four-sided parallelogram in which the pair of leaf springs serve as two parallel sides, and the armature assembly and housing, respectively, serve as the other two parallel sides. The leaf springs are of flat rectangular configuration constraining the reciprocatory movement of the armature assembly to longitudinal displacement with a small transverse displacement. The housing includes a base, and the pair of leaf springs are secured at one of their ends to the base such as to reduce sounds and vibrations during the operation of the pump. Several embodiments are described in which the pumping member is a diaphragm, a pair of diaphragms, and a piston, respectively.

Abstract: An air pump operably by a motor to pump air is disclosed to include a body, an airbag unit, which is mounted in the body has multiple airbags each having an air chamber and an air inlet, a lifting mechanism rotatable by the motor to move the airbags to pump air, a plurality of air intake control valves movably set between the air inlet of each airbag and respective air inlets of the lifting mechanism to control the air passage between the air inlet of each airbag and the air inlets of the lifting mechanism subject to the operation status of the airbags, and an exhaust structure coupled to the airbag unit for exhaust of air from the airbags.

Abstract: Disclosed is a thermo-buckled micro actuation unit made of parylene, which is a polymer having high thermal expansion coefficient, for delivering liquid from a source liquid section to a target liquid section, including a substrate on which a thermo-buckled micro actuation unit is formed. The thermo-buckled micro actuation unit includes upper and lower films made of polymers of high thermal expansion coefficient, a metal resistor arranged between the two films, and a flow channel defined between the lower film and the substrate. When electrical power is supplied to the metal resistor, the metal resistor generates heat and the heat is conducted to the upper and lower films, of which the thicknesses are different, whereby a temperature difference is induced therebetween and causing deformation of thermo-buckling, as a result of which the liquid is pumped from the source liquid section, through the flow channel, toward the target liquid section.

Abstract: A diaphragm metering pump suitable for metering an effervescent gas. The pump has a pump head with a product chamber having an inlet end with a one-way inlet valve and an outlet end with a one-way outlet valve. A displaceable diaphragm member defines a boundary of the product chamber. The diaphragm member is capable of being reciprocated to cause pumping displacements. A discharge side is disposed downstream from the outlet valve. A passageway is disposed in fluid communication between the discharge side and the product chamber. A valve is disposed in the passageway. The valve is opened intermittently to allow liquid to re-enter the product chamber in an amount effective to purge gas from the product chamber to prevent loss of prime.

Abstract: A fluid transporting device is provided with a pump chamber that has a pump function for sucking and discharging a fluid, and is filled therein with the fluid, a casing unit which forms one portion of a wall surface of the pump chamber, a diaphragm which is formed by a conductive polymer film that is subjected to electrochemomechanical expansion and contraction, and forms one portion of the wall surface of the pump chamber, an electrolyte chamber that contains an electrolyte therein, with one portion of the electrolyte being made in contact with the diaphragm, a power supply that applies a voltage to the diaphragm, and a pressure maintaining unit that maintains a pressure of the diaphragm within a predetermined range by moving or deforming the one portion of the wall surface of the electrolyte chamber.

Abstract: A motor/pump assembly for a motor vehicle brake system including a pump and a motor driving the pump, the pump having opposite working diaphragms which are, in each case, mounted between a pump casing and a cover and thereby delimit a space and which can be moved by a crank drive, the space being assigned, in each case, an inlet duct with an inlet valve and an outlet duct with an outlet valve. The outlet ducts are arranged in the covers and in the pump casing such that air displaced out of the spaces is conducted into an inner space surrounding the crank drive of the pump casing and that an air outlet unit be provided, which allows a low-noise blow-out of the air from the inner space as a result of the deflection of the air.

Abstract: A diaphragm pump (1) having a diaphragm (11), a solenoid with a movable magnetic armature (8) as a drive element for the diaphragm (11), and a stop element (9) for adjusting the stroke for the drive element (8). The diaphragm pump includes at least one elastic damper (36) between the drive element (8) and the stop element (9), which elastic damper (36) has at least one compression chamber (26) which is surrounded and formed by at least one elastic boundary wall and by at least one rigid boundary wall of the drive element (8) and/or stop element (9).

Abstract: The present invention discloses a method of confining a liquid metal alloy within a closed-loop system; distributing a first portion of the liquid metal alloy in a cavity within the closed-loop system; turning on an electromagnet to generate a magnetic field to permeate flexible sidewalls of the cavity; attracting the liquid metal alloy in the cavity towards the electromagnet to expand the flexible sidewalls; inducing a second portion of the liquid metal alloy to enter the cavity from an inlet end of a pipe within the closed-loop system; turning off the electromagnet; repelling the liquid metal alloy in the cavity away from the electromagnet to contract the flexible sidewalls; and inducing a third portion of the liquid metal alloy to exit the cavity to an outlet end of the pipe.

Abstract: A vacuum pump capable of pumping solid, liquid and gas, or any combination thereof, including a drive (40) and a manually disengageable pumping system connected thereto. The pumping system is composed of a two- or three-chambered canister (1, 18, 21) within which solids, liquids, and gases can be separated from one another. A highly flexible diaphragm (24), attached to the canister and sealed against it circumferentially, facilitates this separation, when reciprocating and pumping. The components of the pumping system are designed to be disposable, and the two- or three-chambered canister provides for a highly efficient pumping system that is significantly smaller in size than those previously known. The pump is particularly useful for medical applications.

Abstract: A fluid handling apparatus includes a body, which comprises a fluid handling structure, and a flexible membrane attached to the body and formed to interact with a fluid in the fluid handling structure, wherein the membrane comprises a first actuation component. A second actuation component is provided, wherein the first and the second actuation component are formed such that the same attract or repel each other in a first positional relationship, in order to actuate the flexible membrane. A driving means is provided to move the body relative to the second actuation component, in order to bring the first and the second actuation component into the first and out of the first positional relationship.

Abstract: A simple structured thermal actuation pump for reducing energy loss is provided. The thermal actuation pump includes: a first chamber having at least one working fluid inlet and at least one working fluid outlet; a second chamber having at least one working fluid inlet and at least one working fluid outlet; and a thermoelectric element arranged between the first chamber and the second chamber and including one side being cooled and the other side being heated according to a direction of current for changing inside pressures of the first chamber and the second chamber.

Abstract: An oscillating diaphragm fan having a plurality of subunits which each have an oscillating diaphragm that is excited by a magnetic system in an actuator chamber, wherein the air pulsation generated by oscillating diaphragm is discharged outwardly, the actuator chambers of the subunits are connected via means for compensating pressure and are encapsulated outwardly, and the magnetic systems of the subunits are excited out of phase with each other.

Abstract: A diaphragm pump and a method for aligning thereof, the pump including an electric motor, a motor shaft, driven by the electric motor for rotation about an electric motor shaft axis, an eccentric drive, driven by the electric motor, via the motor shaft, to provide reciprocal driving along a pump driving axis, the eccentric drive including an eccentric drive shaft rotating about an eccentric drive shaft axis, the eccentric drive shaft axis being coaxial with the electric motor shaft axis, a non-rigid coupling interconnecting the motor shaft and the eccentric drive shaft and a diaphragm pumping assembly having a fluid inlet and a fluid outlet communicating with a pumping chamber, the pumping chamber having a diaphragm arranged to be reciprocally driven about the pump driving axis.

Abstract: A diaphragm pump 1 has a base block 2, a diaphragm 8 and a drive unit for driving the diaphragm to reciprocate. The base block 2 has three or more liquid flow paths, each having three recesses 23 through 25 or more recesses. The diaphragm 8 and the respective recesses 23 through 25 define a plurality of valve chambers and the metering chamber.

Abstract: An electromagnetic micro-pump includes a substrate, a top plate, a magnetic diaphragm, and a coil unit. The substrate includes a first face and a second face. The first face includes a groove. The top plate is mounted on the first face of the substrate. The top plate includes an input hole, an output hole, and a through-hole. Each of the input hole, the output hole, and the through-hole extends through the top plate and is in communication with the groove. The through-hole is between the input hole and the output hole. The magnetic diaphragm is elastically deformable and mounted to an outer face of the top plate to seal the through-hole. The coil unit is mounted to the second face of the substrate and aligned with the through-hole.

Abstract: Cells can include variable volumes defined between a flexible structure, such as a polymer layer, and a support surface, with the flexible structure and support surface being attached in a first region that surrounds a second region in which they are unattached. Various adhesion structures can attach the flexible structure and the support surface. When unstretched, the flexible structure can lie in a flat position on the support surface. In response to a stretching force away from the support surface, the flexible structure can move out of the flat position, providing the variable volume. Electrodes, such as on the flexible structure, on the support surface, and over the flexible structure, can have charge levels that couple with each other and with the variable volume. A support structure can include a device layer with signal circuitry that provides a signal path between an electrode and external circuitry. One or more ducts can provide fluid communication with each cell's variable volume.

Abstract: An aromatherapy air pump is damped and largely isolated against acoustic and mechanical transmission of vibrations in three dimensions by a combination of containment within multiple, nested housings and standoffs provided by elastomeric supports having anisotropic geometry. An elastomeric liner as well as unstable legs, physical separations, and hermetic seals combine to provide sound reduction for noise and vibration emanating from the pump and its drive motor.

Abstract: A vacuum control system allows the degree of vacuum in a vacuum vessel to be kept constant while removing vaporized components degassed into the vacuum vessel through a gas permeation diaphragm by stably introducing a very small amount of air into a vacuum exhaust path of the vacuum vessel. The vacuum control system controls the rotary power of a DC brushless motor, continuously controls displacement of a vacuum pump, and thus keeps the degree of vacuum in a vacuum vessel constant, by decompressing the inside of the vacuum vessel using an exhaust vacuum pump which operates with the DC brushless motor, monitoring the inside pressure of the vacuum vessel using a pressure sensor, and controlling a voltage applied to the DC brushless motor on the basis of an output signal resulting from measurement of the inside pressure of the vacuum vessel by the pressure sensor.

Abstract: A high pressure metering pump employs a flexible diaphragm extending radially from a piston as the moving pump element. The diaphragm is secured by an annular anvil at its periphery to form a high pressure seal, and the center of the diaphragm is driven reciprocally by a mechanically driven piston. A support assembly for the diaphragm includes a moveable metal ring concentric about the piston and an elastic, resilient ring concentric about the piston and interposed between the metal ring and the diaphragm. The elastic resilient ring is formed of a material such as neoprene, Viton, or the like to mediate and distribute the force between the diaphragm and the metal ring. This assembly allows the diaphragm membrane to support the high pressures that are prevalent in HPLC.

Abstract: A jet generating device includes a housing having an opening and containing gas therein, a vibrating member which is supported by the housing so that the vibrating member is capable of vibrating and which vibrates the gas to discharge the gas as pulsating gas through the opening, a driving mechanism for driving the vibrating member in accordance with an electrical signal, and a drive controller which generates the electrical signal at a fundamental frequency at which an input impedance of the driving mechanism is substantially a maximum and which outputs the generated electrical signal to the driving mechanism.

Abstract: The present invention provides a leakage-proof contrivance for upper hood of diaphragm pump by modifying the vertical wall of the lower tiered brim in the tiered cavity of the conventional pump upper hood into a sloped wall. Thereby, when stacked assembly of sealing collar gasket, piston valve and diaphragm is inset into the tiered cavity of the pump upper hood in closely attachment manner, the sealing collar gasket will be slantwise squeezed and vertically deformed to produce normal outwards stress in both upwards and downwards manners. Thus, the sealing collar gasket can respectively inset in the pump upper hood and piston valve in much more closely attachment manner to block and prevent the pressurized water from leaking out of the diaphragm pump.

Abstract: A motor and pump assembly for providing pressure to a brake actuating device of a motor vehicle brake system is described herein. The assembly comprises an electric motor and a double diaphragm pump. The pump includes a pump housing, two opposed working diaphragms, and crank drives each being coupled between the electric motor and a respective diaphragm for moving the diaphragm. A working chamber is defined between the pump housing and a working chamber cover. Each working chamber including an inlet channel, an inlet valve associated with the inlet channel, an outlet channel, and an outlet valve associated with the outlet channel, wherein the outlet channels are defined in the covers of the working chamber and in the pump housing to direct air displaced from the working chambers into an inside space of the pump housing. An air outlet unit is provided for exhausting the air from the inside space.

Abstract: A medical fluid machine includes a housing providing a first wall and a second wall, the first and second walls at least partially defining a pump chamber. A fluid receptacle is located within the pump chamber, the fluid receptacle including first and second flexible membranes configured to be moved apart to accept a medical fluid and moved together to dispel the fluid. A medical fluid outlet is in communication with the fluid receptacle. A first valve arrangement is configured to enable medical fluid in a sufficiently air-free condition to be delivered from the receptacle through the medical fluid outlet to a patient. A second valve arrangement is configured to enable medical fluid with entrained air to be delivered instead from the receptacle through the medical fluid outlet to an entrained air destination.

Abstract: An electromagnetic vibrational diaphragm pump comprising an electromagnet portion having an electromagnet arranged in a frame, a vibrator which is supported in the electromagnet portion and equipped with a magnet, diaphragms with a large diameter and diaphragms with a small diameter which are successively connected with both ends of the vibrator, and the pump casing portions of the diaphragms with a large diameter and diaphragms with a small diameter which are fixed on the both end portions of the electromagnet portion, wherein the left and right pump casing portions have pump chambers respectively corresponding to the diaphragms with a large diameter and diaphragms with a small diameter. Medium pressure (about 50 to 200 kPa) can be generated.

Abstract: Pump apparatus and method. The pump can include a valve assembly and a diaphragm. In some embodiments, the diaphragm can include a convolute that can deform in order to increase a volume of a pumping chamber to provide an internal fluid bypass when a pressure in the pumping chamber exceeds a bypass pressure. In some embodiments, the pump can include a fluid reservoir at least partially defined by a wall with a flow-restrictive conduit in fluid communication with an outlet chamber. A shut-off switch can include an actuator in fluid communication with the fluid reservoir. The fluid reservoir and the flow-restrictive conduit can substantially isolate the shut-off switch from pressure pulses in the outlet chamber.

Abstract: A diaphragm pump for pumping a fluid includes a diaphragm and a driver. The diaphragm has a first surface and a second surface. The driver includes a support portion and is connected to the diaphragm via the support portion. The driver is reciprocated to deform the diaphragm thereby performing a pumping action. The support portion includes a first supporting surface for supporting the first surface and a second supporting surface for supporting the second surface. The support portion allows the diaphragm to slidingly move along an interval between the first and second supporting surfaces when the diaphragm is deformed.

Abstract: A diaphragm pump comprises a housing, a motor supported by the housing, a drive assembly operably connected to the motor and a wobble plate operably connected to the drive assembly. The motor includes a drive shaft defining a rotational axis. The wobble plate orbits about the rotational axis of the drive shaft. The drive assembly includes a reduction gear assembly and a drive member connected to the gear assembly. The gear assembly provides a predetermined gear reduction to reduce the speed of the motor and increase the torque needed to drive the pump.

Abstract: A bezel and bezel assembly in which the bezel is a rigid block with a plurality of cavities. A depression in the block has ribs extending up therefrom to form an elevated contour. The depression includes at least one cavity therein for the application of air pressure into the depression and over the elevated contour. A gasket fits over the bezel so that positive pressure applied through the at least one cavity in the depression forces a gasket membrane to expand away from the pumping side and negative pressure applied through the at least one cavity in the depression pulls the gasket membrane against the elevated contour of the ribs. The bezel may include solvent bondable tubing connections for making pneumatic connections to the bezel.

Abstract: A multiple membrane pump for food liquids, comprising at least one duct for the compensated intake of the liquid, which is closed on itself in a loop and is provided with at least one intake port, at least one duct for the compensated delivery of the liquid, which is closed on itself in a loop and is provided with at least one delivery port, at least four branches, which provide a unidirectional connection between the intake duct and the delivery duct and are associated respectively with four liquid pumping membranes, a gearmotor assembly, which is associated with a crank system for actuating the membranes and is adapted to convert the rotary motion of an output shaft of the gearmotor assembly into a reciprocating motion, adjusted with an appropriate timing between two mutually opposite intake and delivery stroke limit positions, of each of the actuation axes of the membranes.

Abstract: The invention relates to a device for returning oil separated from blow-by gases and accumulated in an accumulation chamber (5) into the crankcase (2) of an internal combustion engine with a pump (9), wherein the pump (9) is located on a component (8) of the internal combustion engine, which component periodically changes the distance to the pump (9), and that the pump (9) can be driven by magnetic forces acting between the component (8) and the pump (9).

Abstract: A pump includes: a pump chamber for which a capacity is changeable; an inlet channel which allows a working fluid to flow into the pump chamber; an inlet side fluid resistance element disposed between the pump chamber and the inlet channel; an outlet channel which allows the working fluid to flow out of the pump chamber; and a pipeline element formed inside the outlet channel, wherein a rotational flow generation structure, which generates a rotational flow of the working fluid, is provided in the pump chamber, and wherein the outlet channel is located adjacent to the rotational center of the rotational flow.

Abstract: A pump module for use in a medical fluid dispensing system is provided that includes a pump body having first and second portions where at least one of the first and second portions includes first and second fluid chambers. The module further includes at least one membrane operably associated with the fluid chambers, and first and second actuators operably associated with this membrane for the purpose of displacing the membrane and further for displacing fluid from the first and second chambers.