Abstract: A clamping mechanism (30) for clamping a flexible tube comprises two rotatable bobbins (22, 32), each with a tube-engaging surface portion (24) defining boundaries of: a free space through which a tube may extend. The shape of: the tube-engaging surface portion (24) changes around the bobbin circumference, such that axial rotation of the bobbins (22, 32) reduces the free space and thereby squeezes the tube. This allows the flow through the tube to be altered dependent on the rotation of: the bobbins.

Abstract: Provided is a tube pump system which includes: a pair of roller units which are rotated around an axis line from a closing position to a releasing position; a pair of drive units which are configured to respectively rotate the pair of roller units; a control unit which is configured to control each of the pair of drive units; and a pressure sensor which is configured to detect a pressure of a liquid in a pipe connected to the other end of the tube, wherein the control unit controls a first rotation angle when the first roller unit passes through the closing position and a second rotation angle when the second roller unit passes through the releasing position such that fluctuation of the pressure of the liquid when the pair of roller units are rotated through at least one revolution falls within a predetermined value.

Abstract: In many pump types, in particular in orbital pumps, there is an optimization need with regard to the running characteristics, in particular with regard to parameters which relate to the delivery flow. What is provided is an orbital pump device for delivering liquid medium by a rotational movement including a hydraulic housing surrounding a hydraulic chamber in a fluid-tight manner at least one membrane unit which is arranged inside the hydraulic chamber in flat contact with an inner jacket surface of the hydraulic housing; and an inlet and an outlet provided in the hydraulic housing. At least one crowning is provided at the inner jacket surface and/or at the membrane unit such that a radial gap between the membrane unit and the inner jacket surface is defined by the crowning in a circumferential section of less than 360°, and in particular less than 180°.

Abstract: The invention regards a micro dosage peristaltic pump (2) for micro dosage of a fluid, comprising: a housing (4) with an inner annular surface (5), wherein the annular surface comprises an opening (12), a flexible tube (6), wherein a section of the tube is placed upon the annular surface (5), a compression element (7) configured for peristaltic engagement with the section of the tube placed upon the annular surface (5), at least one counter acting element (11), an arm (10) comprising the compression element (7) and the counter acting element (11), wherein the arm (10) is rotatably mounted with a rotation axis perpendicular to the arm, driving means for rotating the arm (10), and thereby moving the compression element (7) and the counter acting element (11) in a circular motion.

Abstract: To provide a tube pump which includes: a drive mechanism including a first roller unit and a second roller unit which rotate about an axis line while being in contact with a tube having elasticity, and a first drive unit and a second drive unit which cause the first roller unit and the second roller unit to rotate independently about the axis line; a holding mechanism which holds the tube in an arcuate shape about the axis line; and an attachment mechanism which detachably attaches the holding mechanism to the drive mechanism.

Abstract: A mechanism for adjusting occlusion of a roller pump is described, wherein the mechanism is provided with: an elongated rod member oriented on a central axis of a pump head of the roller pump; and a drive member attached to the elongated rod member so as to move along the elongated rod member between a first position and a second position, wherein the drive member is connected to each roller block of a pump rotor of the pump head so that movement of the drive member by constant increments along the elongated rod member causes non-uniform and/or non-linear incremental movement of each roller block in a direction radial to the central axis of the pump head.

Abstract: A dispenser machine for storing and dispensing viscous foods and beverages and provides for the efficient and safe dispensation of a viscous food or beverage product that is contained in a flexible product container and which does not come into direct contact with the dispenser equipment. The dispenser includes an evacuation system which includes a weighted roller or slidable weight in contact with one or more sides of the product container and which operates by force of gravity to pressure and direct the food or beverage product contained in the container toward and out of the bag or container tube spout. A pump unit, which is configurable to provide for the dispensation of both food and beverage products with different viscosities by the addition or removal of one or pump pins, draws product from the container as desired and the pump unit pins operate to pinch and prevent the flow of product from the container tube spout after the pump is shut off.

Abstract: A rotor includes a rotary body configured to rotate about a rotational shaft; a plurality of bottom parts attached to the rotary body; a plurality of arm parts that have respective rollers configured to revolve around the rotational shaft and depress a tube, and are attached to the respective bottom parts; and an adjuster that adjusts the mutual positional relation between the bottom parts in the radial direction of the rotation of the rotary body.

Abstract: A tube pump comprises a rotor configured to have a roller and to hold the roller to be able to make an orbital motion along the inner circumferential surface of the cap. The rotor includes a disk part which holds the roller on a base side, and a tube press member that engages with the disk part so that the tube does not move to the base side with respect to the disk part, seals a gap formed with respect to the inner circumferential surface of the cap, and is capable of rotating along an outer circumferential part of the disk part is provided at the outer circumferential part of the disk part.

Abstract: 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.

Abstract: To avoid contamination of workspaces by splashing and the like of a waste fluid. A fluid delivery system for delivering a fluid from one container to another container includes: a delivery channel connecting between the one container to the other container; and a delivery pump which feeds the fluid into the delivery channel by compressively deforming inner diameter in the middle of the delivery channel, wherein the delivery channel is a partially elastic configuration that can be compressively deformed by the delivery pump, and also is a closed-system configuration with which the fluid flowing inside thereof is isolated from outside. As described, the delivery pump and the delivery tube or the waste-fluid container are not directly connected but are simply in contact. Therefore, it is possible to prevent splashing and the like of the waste fluid onto a work space when handling the waste fluid.

Abstract: A system and method for holding tubing for a peristaltic pump that allows for tube stretch or deformation. The present invention compensates for tube stretching and holds the tubing in the elongated position using a one way bearing clutch. Drip retention or a reversal of the pump does not allow the tube to move back into the pump. An encoder can monitor tube elongation and allow metering the tubing during indexing.

Abstract: Tube roller pumps for blood treatment devices are disclosed. The pumps include a curved surface with a rotor rotatable therein. The rotor attaches via a shaft reception to a drive shaft of the pump. The rotor has a first locking element for axially locking the rotor on the shaft and a second locking element for rotationally coupling the shaft and the rotor. The shaft reception and the drive shaft guide the rotor to a position on the shaft, when pushed onto the shaft, and, at this position, the first element may be moved by the shaft from locked to released. The rotor, when pushed further onto the shaft, is moved to another position at which the first element is automatically moved back to locked and the second element may be brought into manual engagement with the shaft to transmit torque from the shaft to the rotor.

Abstract: A “load and go” peristaltic pump tubing arrangement without a special configuration, such as the “Double-Y” tubing connectors used by the Watson Marlow 505L pump head. One of the critical components in the peristaltic pump system is the pump tubing which now can be monitored so that the health of the peristaltic pump is known. The result is a “smart” peristaltic pump using a notch or other part in a second spring-clamp or tubing holder. Located on two ? 316 inch shoulder screws are two roller clutches and two spacers to complete the assembly of the pump. The distance between the two rollers allows the tubing to elongate but not move backward toward the peristaltic rollers.

Abstract: A peristaltic pump that includes an assembly including a rotor configured to compress a hose/tube being positioned on a pump cavity inner perimeter and an adjustment mechanism configured to adjust the compression force imposed on the hose/tube. The adjustment mechanism includes a gear unit and a counterpart for the gear unit. The counterpart is operatively coupled to the rotor, wherein the gear unit in cooperation with the counterpart is configured to adjust a gap between the rotor outer surface and the pump cavity inner perimeter. The assembly is fixed to a sliding guide that is configured to support the hose/tube.

Abstract: A fluid delivery system is provided for use with a peristaltic pump, which includes a roller-tube engagement zone and a rotor structure including an array of rollers. The fluid delivery system includes a console to removably receive the peristaltic pump in a mounted position, with the console including a roller positioning system.

Abstract: The invention relates to a hose pump for delivering a medium conveyed through a hose, including a housing, a drive, a carrier rotatable with respect to the housing, and a plurality of squeeze rollers that are mounted rotatably on the carrier and can be driven by the drive via a gear with a sun wheel and with a first planet wheel connected so as to rotate with the respective squeeze roller, wherein rotating squeeze rollers, during operation of the pump, press a hose, which is inserted into the pump, by squeezing the hose against an abutment and in this way convey the medium onwards through the hose in the delivery direction. In order to permit easier and quicker insertion of a hose in such a hose pump, the invention proposes that, in addition to the first planet wheel, each squeeze roller is also assigned at least a second planet wheel, which is coupled to the inner circumference, acting as a hollow wheel, of the housing in order to set the carrier in rotation from the drive during operation of the pump.

Abstract: The invention relates to a peristaltic pump that includes at least assembly including at least a rotor configured to compress a hose/tube being positioned on a pump cavity inner perimeter and an adjustment mechanism configured to adjust the compression force imposed on the hose/tube. The adjustment mechanism includes at least a gear unit and a counterpart for the gear unit. The counterpart is operatively coupled to the rotor, wherein the gear unit in cooperation with the counterpart is configured to adjust a gap between the rotor outer surface and the pump cavity inner perimeter. The assembly is fixed to a sliding guide, that is configured to support the hose/tube.

Abstract: This invention concerns peristaltic pumps and an adjustment mechanism for adjusting a compression force imposed on a hose. The adjustment mechanism includes at least a gear unit and a counterpart for the gear unit. The counterpart is operatively coupled to a rotor, wherein the gear unit in cooperation with the counterpart are configured to adjust a gap between the rotor outer surface and the pump cavity inner perimeter.

Abstract: Various embodiments are described herein for a mobile infusion device that does not use gravity to expel fluid from a bag. The device has a housing with a central chamber connected with an opening to receive a portion of the bag during use. A rotation assembly is coupled to the housing and includes at least one roller located within the central chamber and a spring mechanism operatively coupled to the at least one roller to rotate it to move the bag and apply a force to a portion of the bag to expel fluid therefrom during use. A control mechanism is operatively coupled to the rotation assembly and has a control assembly to control rotation of the rotation assembly and a user interface coupled to the control assembly to allow a user to select a mode of operation for the device. The spring mechanism is recharged in standby mode. Various mechanisms can be used in various embodiments to improve functionality such as a gearing mechanism.

Abstract: A hose roller pump includes a stator, a rotor, and a rotor drive. The rotor includes hose rollers whose position is variable in the radial direction via an adjustment apparatus having an adjustment element. The pump includes a brake device, and the radial position of the hose rollers is variable by the interplay of the brake device and the rotor drive.

Abstract: A tube pump reduced of the burden against pump driving caused by dragging of a tube by a pressurizing roller. Specifically, guide members are disposed in the respective introduction portions at between the guides. Namely, the guide members are arranged nearby the extensions of the circumference of the arcuate guides and radially with respect to the center of the circumference. Due to this, the pump tube, the roller is to drag, is sustained by the guide member, to prevent the tube from increasing its deformation due to dragging. Thus, the tube can be prevented from being dragged in a manner forming a resistance to the roller. As a result, the pump motor, etc. can be prevented from being burdened with an increasing load.

Abstract: A peristaltic pump having a plurality of pressors which compress a tube portion according to an orderly sequence. The pump is capable of determining a fluid flow inside the tube portion. The pressors are balancing or tilting pressors pivoted around a mutual axis and operated by corresponding motion means, which push the pressors against a plane or reaction element, contrasting the pressure of the same pressors on the tube containing the fluid to be pumped.

Abstract: A peristaltic pump includes opposing occlusion surfaces and a rotor between the occlusion surfaces. The rotor carries a set of occluding surfaces. At least one of either the set of occluding surfaces or the opposing occlusion surfaces are linearly movable relative to the other of the set of occluding surfaces and the occlusion surfaces.

Abstract: The invention concerns an improved peristaltic pump including at least one elastically flattenable tube and at least two assemblies of two pressing elements placed opposite each other, each of said assemblies being configured to compress the tube at a different point from the pump. These two pressing elements of a single assembly are placed on either side of the tube, at least one of the pressing elements of this single assembly is mobile such that the distance separating the pressing elements of the single assembly is adjustable, to allow the pressing members to be placed in a rest position, in which the tube is not compressed by the pressing elements, or to allow the pressing elements to be placed in a position compressing the tube. Advantageously, the adjustment is made automatically when the peristaltic pump or pumping is started or stopped.

Abstract: A peristaltic pumping system comprises a flexible tube, a substantially cylindrical rotating roller unit containing a series of rollers which are freely rotating around their axes and freely moving along a radial segment, holding mechanism for commonly holding the rollers, a central spreader element for pushing the rollers against the flexible tube and a driving unit comprising a driving coupling element, and the holding mechanism is made of at least one planar element having retaining and guiding means for rollers, and the planar element is furthermore adapted to be directly coupled to the coupling element in such a way that rollers are driven through the planar element.

Abstract: A tube-positioning system for loading tubing into a peristaltic pump includes a holder and a first tube segment. The holder includes a shell configured to slidably fit onto an exterior of a pump and a pair of guides extending upward from opposite side walls of the shell. The first tube segment has a fixed length and extends between the pair of guides with each end of the first tube segment secured within one of the respective guides.

Abstract: A tube pump rotor including a rotor element, a plurality of first swing portions supported pivotally at their base end portions by the rotor element, second arm-shaped swing portions supported pivotally at their base end portions individually by the first swing portions, rollers supported rotatably by the individual free ends of the second swing portions, and buffer members made to confront the side faces of the second swing portions so that the rollers may be individually directed radially outward of the rotor.

Abstract: A pump rotor for a roller pump, is disclosed. The rotor comprises: a first roller support comprising a first roller; a second roller support comprising a second roller; an element in the center connected to the first and second roller supports, wherein the first and second roller supports may move angularly with respect to the center element causing distance between the first and second rollers to be varied; first and second positioning elements that connect the first and second roller supports, respectively, to the center element; and first and second spring biased components surrounding first and second positioning elements, respectively, to allow the first and second roller supports to move to allow for automatic adjustment of the rotor.

Abstract: A spring mounted tube pressing member for peristaltic pumps allows loading and unloading of an elastic tube section between the tube pressing member and a continuously revolving rotor assembly by selectively moving between a locked position for fluid transfer and an open position for unhindered mounting and demounting of the tube section or a replaceable tube cassette. Not only is the pressure on the tube pressing member adjustable by the spring used, its dynamic pressure distribution on the tube section also prolongs the tube flex life and reduces fluid back mixing and pulsation in the tube.

Abstract: An apparatus and method are disclosed for the continuous treatment of the flow of a mixture containing liquids and solids. A pump provides the mixture to tube that includes a woven material. The liquid is filtered from the mixture, leaving a solids-enriched mixture in the tube. The tube may be flexed during the process, freeing solids trapped in the tube to flow through the center of the tube. A valve may be provided to the tube to generate a back-pressure in the system.

Abstract: The present invention shows a hose roller pump comprising a stator, a rotor and a rotor drive, wherein the rotor includes hose rollers whose position is variable in the radial direction via an adjustment apparatus having an adjustment element and wherein a brake device is provided and the radial position of the hose rollers is variable by the interplay of the brake device and the rotor drive.

Abstract: A peristaltic pump, for propelling liquid through a flexible pump tube, includes an outer casing having a guiding channel wherein an operating portion of the pump tube extends along the guiding channel. The peristaltic pump further includes at least two pressuring rollers supported at the outer casing in a radially movable manner which can move outwardly to press against the operating portion of the pump tube. A center driving mechanism is supported at a center portion of the outer casing to radially push the pressure rollers and to drive the pressuring rollers to concurrently rotate such that the pressuring rollers roll against the operating portion of the pump tube for continuously propelling the fluid in the pump tube in the direction of rotation.

Abstract: A pump rotor for a roller pump, is disclosed. The rotor comprises: a first roller support comprising a first roller; a second roller support comprising a second roller; an element in the center connected to the first and second roller supports, wherein the first and second roller supports may move angularly with respect to the center element causing distance between the first and second rollers to be varied; first and second positioning elements that connect the first and second roller supports, respectively, to the center element; and first and second spring biased components surrounding first and second positioning elements, respectively, to allow the first and second roller supports to move to allow for automatic adjustment of the rotor.

Abstract: A peristaltic pump includes a plurality of occlusion surfaces and a plurality of rotors. The plurality of occlusion surfaces include a first occlusion surface and a second occlusion surface. The plurality of rotors includes a first rotor configured to be rotated about an axis and carrying a first set of occluding surfaces and a second rotor configured to be rotated about the axis and carrying a second set of occluding surfaces. The first set of occluding surfaces and the second set of occluding surfaces have a staggered pitch.

Abstract: A tube type pumping apparatus having a resilient tube provided along a wall, a squeezing member positioned to move along the wall to squeeze the resilient tube against the wall, a squeezing member holder that holds the squeezing member; a cam member whose surface receives a driving force from a driving source to change positions of the squeezing member between an initial position away from the wall and a squeezing position near the wall, and a regulating force generator that provides a regulating force to the squeezing member at a transition time interval as the squeezing member moves from the initial position to the squeezing position. The regulating force generator and the cam member acting together to prevent the squeezing member from applying pressure against the resilient tube during the transition time interval. The squeezing member has a curved surface to maintain an alignment of the tube with the squeezing member.

Abstract: A peristaltic pump 10 for use in ophthalmic surgery includes a housing 12, a pump head 14 having plurality of rollers 16, a backing plate 18 attached to the housing 12, and a length of surgical tubing 50. The rollers 16 and backing plate 18 cooperate to pinch the length of surgical tubing 50 to peristaltically pump fluids from a surgical site to a collection bag 64. At least one of the pump head 14 and the backing plate 18 is moveable, during operation of the pump 10, from a tubing pinched position to a tubing vent position. This movement allows the tubing 50 to be vented by removing the pinched closure of the tubing 50.

Abstract: A peristaltic pump (6) for pumping viscous media, comprises a housing (6A, 6B) having a wall (12) against which a hose (25) is placed, a shaft (7) that is centrally positioned in the housing and that carries a roller arm (13) having a roller (14) adapted to roll against and at the same time locally compress the hose (25) against the wall (12). A guide path (35) for the hose impregnated with lubricant is arranged in the housing of the pump. The invention also concerns an application of such a pump, a guide path for use in such a pump and a method of performing lubrication therein.

Abstract: A flexible apparatus for metering agricultural chemicals in a wet blade chemical distribution system consists of a modular peristaltic pump delivery apparatus (24) having an impeller (38) and a mounting bore (30) in a computer-controlled servomechanism that meters the correct amount of a wide variety of agricultural chemical regardless of equipment speed. It is especially well suited for easy field chemical change over and maintenance.

Abstract: A roller pump includes a stator, a rotor assembly including a rotor hub, a first roller slide and a second roller slide slidingly disposed within the rotor hub, with each of the roller slides supporting a roller. At least one adjustable bushing is mounted within at least one of the roller slides. The roller slide includes a recess and the at least one adjustable bushing is at least partially disposed within the recess. The at least one adjustable bushing includes a bushing member and a spring member, the bushing member and the spring member being disposed within the recess in the roller slide.

Abstract: A groove wall of a roller support groove opened to both end faces of a pump wheel comprises such a cam face wherein a roller rotates and rolls and is displaced from release operation position a to pump operation position b with rotation of the pump wheel in a pump operation direction from a release operation state and wherein the roller remains immobile and is displaced from the pump operation position b to the release operation position a with rotation of the pump wheel in a release operation direction from a pump operation state.

Abstract: A recoverying unit for maintenance and recovery of ink ejection performance of an ink ejecting device includes an elastic tube; a guide member for supporting the tube; a roller for pressing the tube; and a roller holding member, wherein the roller holding member is provided with a guide groove which connects a first position in which the roller presses the tube for substantially hermetically closing the tube, a second position in which the roller presses the tube with a greater pressing degree, and a third position in which the tube is opened, the guide groove is effective to guide movement of the roller between the first position and the third position.

Abstract: A roller pump including a stator and a rotor assembly disposed within the stator. The rotor assembly includes a rotor hub, a first roller slide and a second roller slide slidingly disposed within the rotor hub. Each of the roller slides rotatably supports a roller. An occlusion adjustment knob for adjusting a radial position of the first and second roller slides and a magnetic detent assembly for providing an audible indicator as the occlusion adjustment knob is rotated.

Abstract: A roller pump including a stator and a rotor assembly disposed within the stator. The rotor assembly includes a rotor hub, a first roller slide and a second roller slide slidingly disposed within the rotor hub. Each of the roller slides rotatably supports a roller. An occlusion adjustment knob for adjusting a radial position of the first and second roller slides and a magnetic detent assembly for providing an audible indicator as the occlusion adjustment knob is rotated.

Abstract: A peristaltic compressor suitable for relaxation-free compression of polarized gas including a pumping rotor driven by a motor provided with a plurality of rollers, and at least a tube, wherein the rotor and the tube(s) is(are) placed in a depressurized chamber having a lower pressure than atmospheric pressure, and wherein the motor is formed by at least one tube fed by a pressurized fluid, driving into rotation a peristaltic rotor provided with rollers, coupled with the pumping rotor.

Abstract: A miniature peristaltic pump includes a rotor with three turning rollers, a support piece with a rounded portion arranged substantially concentric to the rotor and against which, when operating, the rollers are brought to compress a flexible tubing connected to a reservoir of solution to push it outwards and for automatically compensating positional deviations between the roller and the support piece. Each roller has a substantially cylindrical body and a shaft on which the body is rotatably mounted. The ends of the roller shafts are located in oblong slots radially recessed in the rotor. The compensating device includes two springs arranged at the respective ends of the shafts and have a central port concentric to the rotor and three curved spring arms, one for each roller, with one end connected to the central part and the other end bearing on the corresponding end of a roller shaft to push it outwards and thus enable it to exert a substantially constant force of pressure.

Abstract: A pump 15 disposed in an ink-jet recording device has flexible tube 103 and guide member 106 whereon a prescribed part of the tube is mounted. Roller 105, of which there is at least one and which pressurizes and deforms tube 103, is supported by lever 107 such that it pressurizes the tube when it rotates in the forward direction and releases the pressure on the tube when it rotates in the reverse direction. This lever 107 is urged by spring 108 in the direction that presses the roller against the tube.