Entries |
Document | Title | Date |
20080304982 | MICROPUMP, PUMP MODULE, AND DRIVE MODULE - A micropump of peristaltic drive system of pressing a tube having elasticity to transport a fluid is disclosed. The micropump includes: a pump module including the tube, a cam that presses the tube, and a cam shaft on which the cam is pivotally mounted; a drive module including a drive force transmission mechanism that transmits a drive force from a motor to the cam shaft; a coupling member that detachably couples the pump module and the drive module; and a linkage mechanism provided between the motor and the cam shaft to link the drive force. | 12-11-2008 |
20090274567 | TUBING MISLOAD DETECTION MECHANISM FOR AN INFUSION PUMP - A an infusion tube misfitting detection device for an infusion pump, which can be implemented at a low cost while maintaining safety. When a door unit is to be closed with respect to a pump body in a misloaded state of an infusion tube, a mislead detection inner door is pressed by the infusion tube to operate on a handle lock part provided to a handle. Accordingly, a claw portion of the handle lock part is pushed up, so that the door unit cannot be locked with the pump body | 11-05-2009 |
20100034675 | VACUUM PUMP PROVIDED WITH A DEVICE FOR ITS DEACTIVATION - A vacuum pump has inside the pumping chamber valves intended to control the operation by opening and closing during the suction and delivery cycle of the pump. The valves or parts connected thereto are formed at least in part by a ferromagnetic material. A magnetic inductor is applied outside a wall, formed by a non ferromagnetic material, of the pumping chamber of the pump, and inside the pumping chamber are installed conducting elements of ferromagnetic material, for conducting magnetic flow produced, by the inductor, up to polar points close to the positions taken in the conditions of inactivity by the valves, so as to magnetically attract the valves ( | 02-11-2010 |
20100040489 | Tubular Pump - A tubular fluid pump is provided. The pump includes a chamber for receiving and discharging fluid, and a squeezing mechanism for pumping fluid through the chamber. The chamber has a first end with a first opening, a second end with a second opening, and a length of resilient tubular material extending between the first and second openings. One-way valves disposed at the openings cooperate to permit fluid to pass through the chamber in only one axial direction. The squeezing mechanism includes a substantially rigid base and a substantially rigid displaceable actuator. The tubular material is mounted on the base of the squeezing mechanism, and the actuator is aligned to alternately squeeze the tubular material against the base to pump fluid out of the chamber, and release the tubular material from the base to draw fluid into the chamber. A steam appliance incorporating a one-way tubular pump is also provided. | 02-18-2010 |
20100143168 | TUBE UNIT, CONTROL UNIT, AND MICROPUMP - A micropump includes: a tube unit which includes a tube having elasticity and a circular-arc-shaped part, a plurality of fingers extending in radial directions from the circular-arc center of the circular-arc shape of the tube, and a tube guide frame which holds the tube and the plural fingers; a control unit which includes a cam for sequentially pressing the plural fingers from the fluid flow-in side to the fluid flow-out side of the tube, a rotor for giving rotational force to the cam, and an oscillator having a piezoelectric element and a projection disposed at an end in the longitudinal direction to contact the rotor; a reservoir which communicates with a flow inlet portion of the tube; a control circuit unit which inputs a drive signal to the piezoelectric element; and a power source which supplies power to the control circuit unit, wherein the tube unit is attachable to and detachable from the control unit substantially in the horizontal direction with respect to the rotation flat plane of the cam, and the oscillator is oscillated by applying alternating voltage to the piezoelectric element, rotational force is repeatedly given to the rotor from the projection, the plural fingers are sequentially pressed by the cam from the flow-in side to the flow-out side of fluid, and fluid is transported by repeating closure and open of the tube. | 06-10-2010 |
20100209267 | INFUSION PUMP WITH INTEGRATED PERMANENT MAGNET - Described herein is an infusion pump with an integrated permanent magnet. The permanent magnet is positioned to provide an attractive force that moves an armature to compress a fluid-filled infusion tube. An electromagnet can be activated to overcome the attractive force of the permanent magnet and move the armature away from the infusion tubing. The force required to overcome the permanent magnet is much less than the force required to compress the tubing. For this reason the infusion pump has very low power consumption since much of the pumping work is provided by the permanent magnet. | 08-19-2010 |
20100209268 | LOW COST DISPOSABLE INFUSION PUMP - Disclosed is a low cost, disposable, infusion pump. The infusion pump can include an integrated occlusion detector that detects both upstream and downstream occlusions in an infusion tube. In addition, the infusion pump can easily monitor flow rates through the infusion tube, and be quickly set to infuse at a pre-determined rate. An armature within the infusion pump works in concert with a pair of tubing pinchers to precisely control the movement of fluid within the tubing. Sensors mounted within the device detect the position of the armature and can determine if an occlusion has occurred in the tubing. | 08-19-2010 |
20120082574 | Electromagnetic Pump with Frequency Converter Circuit - An electromagnetic pump has a frequency converter circuit for driving the electromagnetic pump, wherein the frequency converter circuit comprises an oscillator circuit, a bistable circuit and a push-pull circuit. The oscillator circuit oscillates to transform DC into a single-phase oscillating signal. The bistable circuit splits the single-phase oscillating signal into a N-phase stimulus signal and a S-phase stimulus signal. The push-pull circuit amplifies and transports the N-phase stimulus signal and the S-phase stimulus signal to the electromagnetic pump to make the swing arms of the electromagnetic pump swinging effectively, wherein the swing speed, the swing frequency and the swing amplitude of the swing arms vary with the change of the oscillation frequency of the oscillator circuit. Thereby, the suction pressure and the discharge pressure of the electromagnetic pump could further be adjusted higher or lower, wherein said frequency converter circuit comprises a modulation circuit, which could change the swing speed of the swing arms swinging outwardly or inwardly to further increase or decrease the suction pressure or the discharge pressure. | 04-05-2012 |
20130236337 | SOLENOID ACTUATORS USING EMBEDDED PRINTED CIRCUIT COILS - A magnetomotive device has an embedded electromagnetic coil formed of multiple printed conductor segments on multiple lamina of a multilayer PCB. A shaft extends through an opening in the PCB, and a permanent magnet with axially opposed poles is secured to the shaft. Energizing the embedded electromagnet generates a magnetic field that attracts or repels the permanent magnet, driving the shaft to do useful work. A pair of embedded PCB coils may be employed, the shaft extending through both coils with the permanent magnet disposed therebetween, and the coils energized so that one repels the permanent magnet while the other attracts it, and the shaft may be driven reversibly to do useful work. | 09-12-2013 |
20130287606 | CONTROL UNIT, TUBE UNIT, AND MICROPUMP - A micropump including a tube unit including an elastic tube disposed in an arc shape, a plurality of fingers disposed radially from the arc shape of the tube, and a guide frame, which holds the tube and the plurality of fingers. The micropump also includes a control unit including a cam that presses the plurality of fingers, a drive section that applies torque to the cam, a control circuit that carries out a drive control of the drive section, and a machine casing that holds the cam, drive section, and control circuit. The tube unit is mountable in and removable from the control unit in a direction approximately parallel to the plane of rotation of the cam, and is mounted inside a space provided in the machine casing. | 10-31-2013 |
20130294953 | GAS DELIVERY DEVICE AND VEHICLE - A scent delivery device includes two substrate units and a drive voltage power supply unit. A gap is provided between the two substrate units. The substrate units are placed so that the principal surfaces of their respective substrates face the gap. Each of the substrate units includes a plurality of linear electrodes. The linear electrodes are formed and arranged in the width direction on the principal surface of each of the substrates, and are electrically connected every predetermined period in their arrangement order. The drive voltage power supply unit applies drive voltages having the same repeating pattern to each set of electrically connected linear electrodes, with a predetermined phase difference. This configuration causes the frequencies of drive voltages applied to the respective substrate units to differ from each other, thereby setting the blowing direction to an arbitrary direction. | 11-07-2013 |
20140079573 | PUMP FOR TRANSFER OF LIQUIDS CONTAINING SUSPENDED SOLIDS - A pump for transferring liquids containing suspended solids comprises a bellows-type chamber retractable and extendable by a reciprocating drive means. The pump is fed by feed stock inflow controlled by a flexible tubular pinch-type valve, and propelled out of the chamber through a substantially identical pinch-type valve. Programmed control means is inadequate to properly regulate volume of flow, and independently interventional means are disclosed to correct aberrant pump cycles. | 03-20-2014 |
20140271273 | HANDHELD OCULAR ASPIRATION TOOL - A variety of systems, processes, and techniques may provide ocular aspiration. In certain implementations, a handheld ocular aspiration tool may include an electrical motor, a peristaltic pump assembly, a fluid input port, and a fluid output port. The peristaltic pump assembly may include a helically wound compressible conduit and a plurality of variable radius rollers. The rollers may be configured to increasingly occlude the conduit as the rollers are rotated in contact with the conduit, wherein two rollers substantially occlude the conduit at one time to pump fluid through the conduit. The fluid input port may be in fluid communication with an input end of the peristaltic pump assembly, and the fluid output port may be in fluid communication with an output end of the peristaltic pump assembly. | 09-18-2014 |
20150147206 | VALVE FOR METERING MEDIA IN THE MICRO-QUANTITY RANGE - This invention relates to a valve for metering filled and/or pasty media. In accordance with an embodiment, the valve comprises a valve element having a metering opening and a valve gate movable in translation and having a flow opening. The valve gate is configured for carrying out an oscillating double-stroke movement in the course of which the flow opening of the valve gate is temporarily aligned with the metering opening of the valve element. The flow opening of the valve gate is aligned with the metering opening of the valve element in the course of the double-stroke movement of the valve gate a first time during the forward stroke and a second time during the backward stroke. | 05-28-2015 |
20160069461 | VALVE UNIT AND PERISTALTIC PUMP INCLUDING THE SAME - A vale unit includes a valve frame and two valve plates. The valve frame defines a valve opening. The valve plates are formed with protrusions. Each of the valve plates has a connecting end that is formed with a notch. The connecting ends are connected to each other. The protrusions protrude from peripheries of the notches. Each of the protrusions has a contact end. The contact ends cooperatively define a gap therebetween. The valve plates are co-rotatable about an axis between a closed position, in which the valve plates substantially close the valve opening, and an opening position, in which the valve plates open the valve opening. The gap has a width varying in response to co-rotation of the valve plates between the opening position and the closed position. | 03-10-2016 |