Class / Patent application number | Description | Number of patent applications / Date published |
417392000 | Common pumping and motor working member | 63 |
20080226475 | Disposable positive displacement dosing system - A positive displacement dosing system is disclosed. The system includes a plurality of disposable positive displacement pumps. The disposable positive displacement pumps each include a pump body having head portion and a base portion, with the head portion having one or more fluid passage openings. Each disposable positive displacement pump also includes a rolling diaphragm internal to the pump body and defining a fluid chamber within the pump body. The disposable positive displacement pump also includes a piston drive unit configured to reciprocally drive the rolling diaphragm to move fluid in or out of the fluid chamber. The positive displacement dosing system includes tubing connecting the fluid reservoir to the disposable positive displacement pump. A method of dispensing a fluid is disclosed as well. | 09-18-2008 |
20080273997 | DIAPHRAGM PUMP POSITION CONTROL WITH OFFSET VALVE AXIS - A hydraulically driven pump includes a diaphragm, a piston, a transfer chamber, a fluid reservoir, and a valve spool. The transfer chamber is defined between the diaphragm and piston and is filled with a hydraulic fluid. The fluid reservoir is in fluid communication with the transfer chamber via at least one valve. The valve spool is configured to control fluid flow between the transfer chamber and the fluid reservoir. The valve spool is movable to open and close an opening into the at least one valve only when an overfill condition or an underfill condition exists in the transfer chamber. The valve spool is moveable along an axis that is non-coaxial with an axis of movement of the diaphragm. | 11-06-2008 |
20110200464 | METHOD AND DISPOSABLE LOW-COST PUMP IN CONTAINER FOR LIQUID COLOR DISPENSING - A pump has a PVC “T” shaped member having an inlet, an outlet and an interior pumping chamber positioned between the inlet and outlet; a piston displaceable into the chamber; an air cylinder for driving the piston into the chamber; a spring for biasing the piston outwardly from the chamber in opposition to force applied by the air cylinder; a washer-urethane disk check valve at the conduit inlet permitting fluid flow into the chamber but precluding fluid flow out of the chamber responsively to piston displacement into the chamber; and a washer-urethane disk check valve at the conduit outlet permitting fluid flow out of the chamber responsively to fluid pressure increase resulting from piston displacement into the chamber. | 08-18-2011 |
20110274567 | LUBRICANT PUMP AND MACHINE WITH SUCH A LUBRICANT PUMP - The invention pertains to a lubricant pump for conveying lubricant to at least one lubricating point, wherein said lubricant pump features a first pump unit and a drive assigned thereto. According to the invention, another pump unit is also provided and coupled to the first pump unit, wherein the other pump unit can be driven simultaneously with the first pump unit by means of the drive of the first pump unit. | 11-10-2011 |
20110293447 | Hydraulically Actuated Reciprocating Pump - A hydraulically driven reciprocating pump. In some embodiments, the pump includes a housing including a hydraulic chamber, a cylinder coupled to the housing, a piston assembly adapted for reciprocal motion within the housing and the cylinder, the piston assembly separating the hydraulic chamber into three subchambers, and a hydraulic system fluidicly coupled to each of the subchambers. The hydraulic system is actuatable to deliver hydraulic fluid to a first of the subchambers, whereby the piston assembly strokes back and a working fluid is drawn into the cylinder, to deliver hydraulic fluid to a second of the subchambers, whereby the piston assembly strokes out and the working fluid is exhausted from the cylinder, and to adjust a volume of hydraulic fluid within a third of the subchambers, whereby the piston assembly translates to bring a pressure of the working fluid in the cylinder to within a pre-selected range. | 12-01-2011 |
20110311378 | DIAPHRAGM INSTALLATION TOOL - An air-driven dual diaphragm pump comprises a pump body with a first air passage leading to a first air cavity with a first diaphragm, a second air passage leading to a second air cavity with a second diaphragm, and a reciprocating shaft which connects the first and second diaphragms. A diaphragm installation tool for the dual diaphragm pump comprises a plate which fits atop the pump body. A groove in a surface of the plate opposite from and nonadjacent to the pump body extends from the location of the first air passage to the location of the second air passage. A hole located within the groove at the location of either the first air passage or the second air passage extends through the plate. Pressurized air entering the pump body is redirected by the groove and the hole to always enter the first air passage, rather than the second, thereby slowly filling the first air cavity and positioning the second diaphragm for installation. | 12-22-2011 |
20120057997 | SYSTEMS AND METHODS FOR OPTIMIZING THERMAL EFFICIENCEY OF A COMPRESSED AIR ENERGY STORAGE SYSTEM - Systems, methods and devices for optimizing thermal efficiency within a gas compression system are described herein. In some embodiments, a device can include a first hydraulic cylinder, a second hydraulic cylinder, and a hydraulic actuator. The first hydraulic cylinder has a first working piston disposed therein for reciprocating movement in the first hydraulic cylinder and which divides the first hydraulic cylinder into a first hydraulic chamber and a second hydraulic chamber. The second hydraulic cylinder has a second working piston disposed therein for reciprocating movement in the second hydraulic cylinder and which divides the second hydraulic cylinder into a third hydraulic chamber and a fourth hydraulic chamber. The hydraulic actuator can be coupled to the first or second working piston, and is operable to move the first and second working pistons in a first direction and a second direction such that volume in the hydraulic chambers are reduced accordingly. | 03-08-2012 |
20130129534 | PUMPING UNIT FOR A MACHINE TO DISTRIBUTE CONCRETE - A pumping unit for a machine to distribute concrete includes a pair of cylinders provided with a relative pumping piston movable linearly for a determinate travel to feed the concrete to a determinate circuit to distribute the concrete; and a hydraulic command circuit operatively connected to both the cylinders, to determine an alternate pumping movement of the relative pumping pistons. The pumping unit includes at least a sensor member operatively associated to at least one of the cylinders in order to detect point-by-point one or more data relating to the operating condition of the pumping piston during its movement for the whole travel. The data includes at least one of position, speed, stress and direction of movement of the relative piston. | 05-23-2013 |
20140079571 | MICROFLUIDIC OSCILLATOR PUMP - Microfluidic oscillator circuits and pumps for microfluidic devices are provided. The microfluidic pump may include a plurality of fluid valves and a microfluidic oscillator circuit having an oscillation frequency. The fluid valves may be configured to move fluids. Each fluid valve may be connected to a node of the microfluidic oscillator circuit. The pumps may be driven by the oscillator circuits such that fluid movement is accomplished entirely by circuits on a microfluidic chip, without the need for off-chip controls. | 03-20-2014 |
20140255223 | MECHANICAL ENGINE DRIVEN WATER PUMP - A mechanical engine driven water pump is disclosed for converting energy from an input heat source to a reciprocating mechanical output for powering the water pump. The mechanical reciprocating engine comprises an engine bore having an input port and an output port. An engine piston is disposed in the engine bore. An engine valve assembly is slidably mounted to the engine piston for communicating the input port and the output port with opposed sides of the engine piston for effecting reciprocal motion of the engine piston. A piston shaft is connected to the reciprocal motion of the engine piston to provide the reciprocating mechanical output the water pump. A stuffing box is interposed between the mechanical reciprocating engine and the reciprocating mechanical output for providing a positive seal for the mechanical reciprocating engine. The heat source may comprise a solar heat source, a geothermal heat source, a byproduct heat source or the external burning of a petroleum product. | 09-11-2014 |
20160201656 | COMPRESSED AIR DRIVEN RECIPROCATING PISTON HYDRAULIC PUMP | 07-14-2016 |
20180023552 | MICROFLUIDIC OSCILLATOR PUMP | 01-25-2018 |
417393000 | With additional unitary common pumping and motor working member | 9 |
20090092505 | DUAL DIAPHRAGM PUMP ASSEMBLY FOR A SANITATION SYSTEM - A pump assembly includes a housing defining a working chamber, a water pump chamber and a waste pump chamber. A first diaphragm separates the water pump chamber and the working chamber. A second diaphragm separates the waste pump chamber and the working chamber. A common driver member interconnects the first diaphragm and the second diaphragm. Movement of the driven member to a first position creates a positive pressure in the water pump chamber and a negative pressure in the waste pump chamber. Movement of the driven member to a second position creates a negative pressure in the water pump chamber and a positive pressure in the waste pump chamber. | 04-09-2009 |
20090246046 | WINDSHIELD WASHER PUMP WITH BREATHER HOLE COVER - A fluid pump assembly is disclosed for performing in a damp environment. A pump member is provided that drives a quantity of fluid. A pump housing encloses the pump member and includes a breather hole for circulating cooling air around the pump member during operation. A cover is provided that substantially covers the breather hole and defines a tortuous path that enables air to circulate through the breather hole while preventing entry of water thereto. | 10-01-2009 |
20100028174 | CHECK VALVE HAVING INTEGRALLY FORMED SEAT AND SEAL BODY - A valve assembly includes first and second conduits having respective first and second flanges in abutment with each other, a stopper in the second conduit, and a valve body secured between the first and second flanges. The valve body includes a body bore in communication between the first and second conduits. The body bore defines a circular opening in one end of the valve body. The valve body also includes a circumferential notch that substantially insulates the circular opening from distortion arising from securing the valve body. The stopper snuggly seats against the circular opening to prevent fluid flow from the second conduit to the first conduit, but unseats to permit fluid flow from the first conduit to the second conduit. An o-ring may surround a portion of the valve body and be energized as the valve body is secured. A lip may surround the circular opening to provide a seat for the stopper. | 02-04-2010 |
20100172771 | MULTIPHASE PUMP - A multiphase pump includes a master cylinder having a first port adjacent to a first end of the master cylinder, and a second port adjacent to a second end of the master cylinder connected to a source of hydraulic fluid. A master piston is positioned within the master cylinder. A slave cylinder is adjacent to each of the first and second ends of the master cylinder. Each slave cylinder has a first input port and a first output port adjacent to a first end of each slave cylinder, and a second input port and a second output port adjacent to a second end of each slave cylinder. Each first input port and second input port is adapted to connect to a source of gas to be compressed. A slave piston is positioned within each slave cylinder and is connected to the master cylinder such that movement of the master piston results in movement of each slave piston. | 07-08-2010 |
20100215519 | AIR OPERATED DOUBLE DIAPHRAGM OVER CENTER VALVE PUMP - An air operated double diaphragm pump comprising an air valve mechanism. The air valve mechanism may comprise a single valve system that replaces the two valve system found in conventional air operated double diaphragm pumps. The position of the valve may be determined by the diaphragm motion of the pump up to a stall position. A spring-loaded mechanical actuation may complete the valve action from the stall position to the final or end of stroke position of the pump. | 08-26-2010 |
20140105766 | FACE DRIVE FLUID PUMP - A fluid pump comprising a fluidic manifold comprising a plate constructed of a fluid-impermeable material. The plate has a pump platen, first fluid connectors, and second fluid connectors, and one or more channels formed therein for connecting the first connectors to the second connectors. The fluid pump has a fluid-impermeable membrane positioned on the plate and covering the one or more fluid channels to form one or more fluid paths. The fluid pump also has a pump tubing positioned on the pump platen, the pump tubing having a first part connected to a first one of the first fluid connectors and a second part connected to a second one of the first fluid connectors such that the pump tubing is fluidly connected to the channels via the first one and the second one of the first fluid connectors. | 04-17-2014 |
20140186200 | Fan Blade Adjustment Piezoelectric Actuator - A pump for driving a hydraulic fluid to adjust an angle of an airfoil has a transmission to be rotated to change the angle of incident of a plurality of airfoils. The transmission is driven through a rotating input to in turn rotate, and change the angle. The input is caused to rotate by a piston having engaging threads on the input, and the piston is mounted within a hydraulic chamber. Opposed chambers are on each of two opposed ends of the piston. A piezoelectric pump selectively delivers pressurized fluid into the opposed chambers to drive the piston, and to in turn cause the input to rotate. | 07-03-2014 |
20150098846 | Diaphragm Pumps and Pumping Systems - A process fluid pump can include a pump chamber, an inlet valve, and an outlet valve. Diaphragm regions can define at least a portion of each of the pump chamber, the inlet valve, and the outlet valve. The diaphragm regions can each have an actuation region with a surface that is convexly shaped when the formed actuation region is in a natural unstressed first state, and each formed actuation region can be actuated by a motive fluid to transition to a second state in which the surface is non-convexly shaped. | 04-09-2015 |
20150125319 | PUMPING CASSETTE - A pumping cassette including a housing having at least two inlet fluid lines and at least two outlet fluid lines. At least one balancing pod within the housing and in fluid connection with the fluid paths. The balancing pod balances the flow of a first fluid and the flow of a second fluid such that the volume of the first fluid equals the volume of the second fluid. The balancing pod also includes a membrane that forms two balancing chambers. Also included in the cassette is at least two reciprocating pressure displacement membrane pumps. The pumps are within the housing and they pump the fluid from a fluid inlet to a fluid outlet line and pump the second fluid from a fluid inlet to a fluid outlet. | 05-07-2015 |
417394000 | Collapsible common member | 42 |
20080260551 | ROLLING DIAPHRAGM PUMP - A rolling diaphragm pump includes a housing, a rolling seal diaphragm disposed in the housing, a piston for driving the diaphragm, and a valve for regulating the flow of working fluid in a portion of the housing. A constant differential pressure is maintained across the diaphragm independent of discharge pressure of the pump. A method of pumping a viscous medium includes pumping the viscous medium by maintaining a constant differential pressure across a rolling seal diaphragm independent of discharge pressure of the viscous medium, with the diaphragm disposed between the viscous medium and a working medium and being driven by a piston. | 10-23-2008 |
20090202367 | TUBE OCCLUDER AND METHOD FOR OCCLUDING COLLAPSIBLE TUBES - The present invention involves, in some embodiments, mechanisms and methods of occluding collapsible tubing with an occluder to prevent fluid flow therethrough. In some embodiments, a tube occluding mechanism is disclosed that includes a bendable occluding member for creating a force that can be applied to a collapsible tube to occlude the tube. In some embodiments, the collapsible tube can be an inlet/outlet tube on a removable pumping cartridge that is coupled to a reusable pump drive component when the system is in operation. In such embodiments, the occluding mechanism can be attached to the reusable component and can be used to block fluid flow to and from the pumping cartridge. In some embodiments, the occluding member can comprises a spring plate which can create a force to occlude tubing when in a relaxed, unbent configuration, and which can be bent to unocclude the tubing. In some preferred embodiments, in a default configuration of the tube occluder mechanism (when no external force is applied to the occluding member) the tubes are occluded, so that the tube occluder mechanism provides a fail-safe configuration preventing fluid flow to and from a pumping cartridge to which the tubes can be connected. | 08-13-2009 |
20130236335 | CAPACITIVE PUMPING AND FLOW CONTROL - Embodiments of the invention relate generally to devices and methods for pumping and controling the flow of a fluid. More particularly, embodiments of the invention relate to capacitive pumping and flow control devices and methods. In one embodiment, the invention provides a pump system having an inlet valve, an outlet valve, and a chamber between and in communication with each of the inlet valve and the outlet valve, the chamber having at least one elastic surface, wherein the chamber will dilate in response to a fluid exerting a pressure on the elastic surface, contain a quantity of the fluid when so dilated, and discharge the quantity of the fluid through the opened outlet valve. | 09-12-2013 |
20150369227 | Ribbon Transducer and Pump Apparatuses, Methods and Systems - The RIBBON TRANSDUCER AND PUMP APPARATUSES, METHODS AND SYSTEMS include, in various embodiments, a variety of mechanisms comprised of components that include flexible elements with persistently strained deformations. Under operation, the deformations may be reconfigured via actuation to produce useful work, or may be reconfigured when subjected to external forces, such as from flowing fluid. The external energy input used to reconfigure these deformations may be harnessed and converted into electrical energy or may be converted into useful mechanical work, such as pumping. | 12-24-2015 |
417395000 | Diaphragm | 38 |
20080260552 | MEMBRANE PUMP - A membrane pump powered by an activating element includes a chamber body. The interior of the chamber body is provided with a first chamber and a second chamber that are in fluid communication with each other. One side or both sides of the chamber body are provided with an inlet pipeline and an outlet pipeline that are in fluid communication with the first chamber and second chamber, respectively. Valves are provided on the inner wall face of same side of the first chamber and the second chamber, thereby preventing the working fluid from generating a backflow phenomenon. Furthermore, the top surface of the chamber body is provided with a membrane. An activating element abuts on the membrane for driving the membrane to swing up and down, thereby pressing the working fluid within the first chamber to circulatively flow in one direction. Via this arrangement, in addition to miniaturize the pump structure to a further extent, the working performance of the pump and the flowing amount of the working fluid are also increased. | 10-23-2008 |
20080260553 | MEMBRANE PUMP DEVICE - A membrane pump device powered by an activating element includes a chamber body and a second chamber body. The interior of the chamber body is provided with a chamber. Both sides of the chamber body are provided with an inlet pipeline and an outlet pipeline that are in fluid communication with the aforementioned chamber, respectively. A valve is provided on the inner wall face of the chamber, thereby preventing the working fluid from generating a backflow phenomenon. Furthermore, the top surface of the chamber body is provided with a membrane. An activating element abuts on the membrane for driving the membrane to swing up and down, thereby pressing the working fluid within the chamber to circulatively flow in one direction. Finally, the second chamber body is in fluid communication with the chamber body. The interior of the second chamber body is provided with another valve. Via this arrangement, in addition to miniaturize the pump structure to a further extent, the working performance of the pump and the flowing amount of the working fluid are also increased. | 10-23-2008 |
20090016909 | PRECISION PUMP WITH MULTIPLE HEADS - A pump for use in handling one or more different process fluids includes a plurality of pumping chambers having a process fluid inlet and a process fluid outlet, process fluid outlet coupled to a process fluid valve on each pumping chamber for selectively preventing and allowing the flow of process fluid through the pumping chamber, an actuation mechanism for pumping actuating fluid to a plurality of actuating fluid chambers in fluid communication with the actuating fluid chambers to permit flow into each actuating fluid chamber of actuating fluid, and at least one diaphragm separating each pumping chamber from an associated actuating fluid chamber, for separating process fluid from actuating fluid. Operation of the actuation mechanism displaces actuating fluid and causes actuating fluid to flow only into each of the actuating fluid chambers having an opened process fluid valve, resulting in pumping. | 01-15-2009 |
20090068032 | Sanitary Diaphragm Pump for Critical Bioprocess Applications - An easily cleaned and/or sterilized fluid pumping assembly including a first pump housing including a first inner chamber. The first pump housing includes a fluid access port adapted to provide fluid communication between an outside of the first pump housing and the first inner chamber. Also, included is a second pump housing having a first coupling flange securely mated to the first pump housing. The second pump housing includes a second coupling flange adapted to be removeably and securely mated to a third coupling flange on a piston housing. Additionally, a flexible diaphragm is provided disposed between the first and second pump housings. The diaphragm is in fluid communication with the first inner chamber. Also, the diaphragm is displaceable by a driven piston for expelling fluid from the first inner chamber. More than one such assembly is used in combination to provide a constant flow fluid delivery system. | 03-12-2009 |
20090155098 | Pump structure connectable with an air cushion or a bladder - A pump structure connectable with an aircushion or a bladder. The pump structure includes: a flexible main body defining a valve room in which a relief valve is arranged and a compressible chamber; a one-way valve permitting the fluid to one-way flow into the chamber; and a thin membrane-type check valve. The check valve has a first end and a second end, which are operable between opened position and closed position. The first and second ends respectively communicate with the chamber and an output tube, which is connectable with the aircushion or bladder. The first and second ends of the check valve are respectively positioned in spaces provided by the chamber and the valve room. A substrate board is disposed under the flexible main body. The substrate board has a through hole and a notch formed on positions where the first and second ends of the check valve are formed. | 06-18-2009 |
20100104458 | PUMP - A pump that has a cavity ( | 04-29-2010 |
20100158716 | PRECISION PUMP WITH MULTIPLE HEADS - A pump for one or more different process fluids is provided including a pumping chamber having a process fluid inlet and outlet coupled to a process fluid valve on each pumping chamber for selectively preventing and allowing flow of process fluid through the pumping chamber. An actuation mechanism for pumping actuating fluid to actuating fluid chambers is provided that is in communication with the actuating fluid chambers to permit flow into each actuating fluid chamber of incompressible actuating fluid. A diaphragm separates each pumping chamber from an associated actuating fluid chamber for separating process fluid from actuating fluid. The actuation mechanism is removable by a quick disconnect that provides for disconnection of the activation mechanism without affecting process fluid. Operation of the actuation mechanism to displace actuating fluid causes actuating fluid to flow only into each actuating fluid chamber having an opened process fluid valve, resulting in pumping. | 06-24-2010 |
20100284834 | Air Operated Diaphragm Pump With Electric Generator - An air operated double diaphragm pump comprises an integrated electric generator and an air efficiency device. The integrated electric generator increases the portability of the air operated double diaphragm pump. The air efficiency device varies the amount of compressed fluid entering the pump between a high volume and a low volume dependent upon the velocity and position of the pump's diaphragm assemblies to optimize the pump's efficient use of the compressed air. | 11-11-2010 |
20110027108 | Polymer-Metallic Reagent Head - A reagent head has a housing, an inlet and an outlet. Check valves and other details are not shown for clarity. The reagent head may have a dish where a diaphragm may seat when in a fully forward position. The reagent head may be constructed primarily from a high-strength material, e.g. ductile iron, in a substrate layer. The reagent head may also comprise a polymer layer. The polymer-metal interface may incorporate key grooves to provide an increased surface area for the polymer-metal bond. The key grooves may be any shape which increases the bonding surface area. Certain key groove cross-sectional shapes, such as dovetails, will create an interlocking interface that may provide increase resistance to separation of the polymer layer from the substrate layer. | 02-03-2011 |
20110135514 | Pump Device - A pump device includes a pulsator as a drive element for a main pump head which is situated in a delivery line and the working chamber of which is provided with a suction-side non-return valve and a pressure-side non-return valve. The working chamber of the pulsator is connected via an oscillation line, which is filled with delivery medium, to the working chamber of the main pump head in such a way that the pulsator sucks delivery medium out of the delivery line and into the working chamber of the main pump head, or presses delivery medium out of the working chamber, in an oscillating fashion. A ventilation valve is provided for ventilating the working chamber of the pulsator, and the ventilation line is a time-controlled valve and/or a pressure-controlled double-seat valve. A device may be provided for introducing a liquid into the working chamber of the pulsator and/or the oscillation line. | 06-09-2011 |
20110142692 | Air Logic Controller - An air logic controller for increasing the efficiency of an air operated double diaphragm pump. The air logic controller may increase the efficiency of the pump by controlling the supply of compressed fluid to the pump. In one embodiment, the air logic controller may control the supply of compressed fluid to the pump by replacing the continuous, large volume supply of compressed fluid supplied to conventional air operated pumps during a single pumping stroke with a varied supply of compressed fluid. The varied supply of compressed fluid may comprise a supply of compressed fluid that alternates between a large volume supply and a small volume supply of compressed fluid. The air logic controller may vary the supply of compressed fluid to the pump based at least partially on the position of a main air valve spool and the setting on an adjustable pneumatic time delay relay. | 06-16-2011 |
20110229352 | High Pressure Double Membrane Pump and Membrane Element for Such a Pump - A high pressure double membrane pump has a central housing ( | 09-22-2011 |
20110280747 | PUMP WITH AN ELASTIC MEMBRANE AND HYDRAULIC CONTROL - A hydraulically-controlled diaphragm pump has a pump chamber ( | 11-17-2011 |
20110311379 | PUMP DIAPHRAGM - A diaphragm assembly designed for employment in a fluid driven diaphragm pump includes a piston having an inflexible core. This core includes a hub with a plate extending radially from about the periphery of the hub and a center attachment concentrically arranged in the hub and accessible from a first end of the hub. The plate defines the inflexibility of the piston. The piston further includes a unitary diaphragm body molded with the inflexible core in situ. A peripheral convolute portion outwardly of the piston is integrally molded with the unitary diaphragm body. The unitary diaphragm body has a plurality of connective tendons extending through the plate. A thermoplastic coating extends about the inflexible core between the core and the molded unitary diaphragm body. The unitary diaphragm body is of thermoplastic elastomer having at least a thermally miscible surface with the thermoplastic coating. The unitary diaphragm body between the periphery of the circular plate and the convolute portion has an annular ring portion of greater cross-sectional thickness than the peripheral convolute portion. The first end of the hub including a mounting surface exposed through the adjacent unitary diaphragm body with a threaded hole as a center attachment extending through the mounting surface. A pump shaft has a threaded end engaged with the threaded hole and a shoulder. An inflexible backing plate is held between the mounting surface and the shoulder on the pump shaft and extends in juxtaposition with the diaphragm to the annular ring portion. | 12-22-2011 |
20120045350 | DOUBLE-DIAPHRAGM PUMPS - A double-diaphragm pump comprising a pair of axially spaced apart pumping chambers, each chamber having a pumping diaphragm which divides each chamber into an inner and outer compartment, the inner ends of both pumping chambers being closed by a central element, means for supplying fluid to the outer compartments to cause the diaphragms to oscillate and vary the capacities of the inner compartments and each of the inner compartments having an inlet and an outlet port leading to unidirectional valves to allow fluid to be drawn into one of the compartments when the appropriate diaphragm moves outwardly and expelled from that compartment when the diaphragm moves inwardly, and in which the unidirectional valves are located in inlet and outlet manifolds in the central element and are accessed and fitted through the inlet and outlet ports in the inner compartments. | 02-23-2012 |
20120107152 | MODULAR DIAPHRAGM PUMPING SYSTEM - The present invention provides apparatus featuring a pump system, including a modular diaphragm pump system, comprising pump modules and couplers, where the pump modules are configured to receive input feeds of fluid being drawn into the pump modules, to provide output feeds of fluid being pumped from the pump modules, and to receive gas feeds to drive the pump modules; where the couplers configured to receive a common input feed and to provide the input feeds of the fluid being drawn into the pump modules, to receive the output feeds and to provide a common output feed of the fluid being pumped from the pump modules; and to receive a common gas feed and to provide the gas feeds to drive the pump modules; and where the common gas feed causes the pump to provide a substantially constant almost pulsation free flow as one pump module becomes a master pump module and the other pump module becomes a slave pump module. | 05-03-2012 |
20120207627 | PUMPING CASSETTE - A pump cassette is disclosed. The pump cassette includes housing. The housing includes at least one fluid inlet line and at least one fluid outlet line. Also, the cassette includes at least one reciprocating pressure displacement membrane pump within the housing. The pressure pump pumps at least one fluid from the fluid inlet line to at least one of the fluid outlet line. Also, the cassette includes at least one mixing chamber within the housing. The mixing chamber is fluidly connected to the fluid outlet line. | 08-16-2012 |
20120224984 | DIAPHRAGM PUMP AND PUMPING SYSTEMS - A process fluid pump can include a pump chamber, an inlet valve, and an outlet valve. Diaphragm regions can define at least a portion of each of the pump chamber, the inlet valve, and the outlet valve. The diaphragm regions can each have an actuation region with a surface that is convexly shaped when the formed actuation region is in a natural unstressed first state, and each formed actuation region can be actuated by a motive fluid to transition to a second state in which the surface is non-convexly shaped. | 09-06-2012 |
20120308412 | Diaphragm Metering Pump Device for Medical Use - This pump comprises a chamber and an annular pumping diaphragm secured to the said chamber and the inner edge of which is secured to a central drive part. This diaphragm has a convex domed profile so that its expulsion stroke results essentially in the energy-generating flexing of the intake stroke. The rigidity of the diaphragm is chosen so that the absolute pressure of the chamber lies within the following range: | 12-06-2012 |
20130017102 | OVER-CENTER LINKAGEAANM Rogers; John AnthonyAACI Broadstone DorsetAACO GBAAGP Rogers; John Anthony Broadstone Dorset GB - A novel changeover mechanism for a compressed air driven double diaphragm pump comprises a shaft slidably mounted through aligned apertures in opposing surfaces of the twin diaphragm chambers. At the centre of the shaft between the two diaphragm chambers is provided an annular notch in to which is located an arm extending from a U shaped frame. The U shaped frame is pivotally mounted atop a valve plate which includes multiple ports. Positioned against a surface of the valve plate is a valve closure component which is configured to slide across the surface selectively obstructing the multiple ports. The valve closure component is held in place by a metal peg hingedly mounted in slots provided in parallel extension of the U shaped frame. Linear tension springs connect the hinged wire pusher with U shaped frame adjacent the pivot point. The springs bias the position of the valve closure component against the valve plate in an off centre position. | 01-17-2013 |
20130058805 | PNEUMATIC MICROPUMP - A pneumatic micropump is provided. The pneumatic micropump includes a fluidic channel layer, an upper substrate, a lower substrate, an upper membrane and a lower membrane. The fluidic channel includes a fluid inlet a reservoir, and a fluid outlet, wherein the fluid passes through the fluid inlet, the reservoir and the fluid outlet, successively. The upper substrate includes an upper pneumatic chamber facing the reservoir. The lower substrate includes a lower pneumatic chamber facing the reservoir. The upper membrane is disposed between the upper pneumatic chamber and the reservoir, and the lower membrane is disposed between the lower pneumatic chamber and the reservoir. | 03-07-2013 |
20130078121 | SEPARATION TYPE PNEUMATIC DUAL PARTITION MEMBRANE PUMP AND EXTERNAL PNEUMATIC CONTROL VALVE THEREOF - The present invention relates to a separation type pneumatic dual partition membrane pump, which comprises a pump body and an external pneumatic control valve which is separately installed. Through the operation of the external pneumatic control valve, the main shaft of the pump body and the valve rod of the external pneumatic control valve are reciprocally moved, and the two partition membranes respectively generate stretch and compress motions for changing the volume of each liquid room in the pump body so as to perform the pump stroke and the liquid suction stroke to the liquid. | 03-28-2013 |
20130078122 | Diaphragm Circulator - A diaphragm circulator for liquid material having an internal circuit provided with at least one material intake orifice for discharging the material. The circulator body defines a propulsion chamber with rigid walls between which a deformable diaphragm is placed in such a way that the edge thereof is adjacent to the intake orifice and the edge is adjacent to the discharge orifice for forming a ripple carrier. A diaphragm-exciting member is arranged on the side of the intake orifice for producing a reciprocating motion on the corresponding diaphragm edge in such a way that the ripple is generated and is provided with the circulator rigid walls which are arranged inside free ripple amplitude envelope surfaces extending along the diaphragm. The diaphragm is associated by at least one edge thereof with means for generating a tension therein at least while the ripple is generated in such a way that during the operation, the diaphragm tension on the side of the discharge orifice is greater than on the side of the intake orifice. | 03-28-2013 |
20130101445 | DOUBLE DIAPHRAGM PUMP - A diaphragm pump, in which a fluid moves at least a first piston of a first piston/cylinder system back and forth, the first piston being mechanically connected to at least one other hydraulic piston and the hydraulic piston driving at least one diaphragm by a hydraulic medium. | 04-25-2013 |
20130115117 | Double-Membrane Central-Flow Pump - The present invention is a central flow double diaphragm pump controlled by an operating fluid distribution module on the topside. A pivoting sealing member with a protruding wing pivots on the low friction seal of the operating fluid distribution module. The pumped fluid chambers' inlet and outlet ports are positioned at different levels within the projected section of each chamber. The four check valves, for example, but not necessarily, ball valves, are arranged in a special configuration. All four check valves, two suction check valves and two discharge check valves, are located in the centre of the pump's wetted body and are accessible from the topside of the wetted body. The two suction check valves are located close to the pump inlet, above the shaft, and the valves' outlets connect immediately into the diaphragm chambers. The two discharge check valves are located close to the pump outlet, below the shaft, and the valves' inlets connect immediately from the diaphragm chambers. The arrangement of the check valves, all accessible from the topside, allows the valves to be removed for maintenance from above, after disassembly of just the operating fluid distribution module and the check valve access caps, without disconnecting the pump from the fluid line. Similarly the arrangement of the chamber covers allow the diaphragms, without fastenings, to be removed for maintenance from the pump sides, after disassembly of only the operating fluid distribution module and the chamber covers, without disconnecting the pump from the fluid line. | 05-09-2013 |
20130129535 | PUMP - A pump for conveying a fluid comprises a pump housing ( | 05-23-2013 |
20130164156 | Pump for Delivering a Product, Comprising a Piston Sliding in the Metering Chamber - The pump includes a piston slidably mounted in a metering chamber, the piston including a support, a diaphragm made of a first material and forming a check valve that allows fluid to flow into the metering chamber, and a presser element for pressing the diaphragm against the support, the presser element including a skirt carrying seal enabling the piston to slide in leaktight manner in the metering chamber, the presser element being made of a second material different from the first material of the diaphragm, being fitted against the diaphragm, and having a diaphragm presser surface that holds the diaphragm deformed against the support in order to close the check valve. | 06-27-2013 |
20130183172 | Device for detecting breakage of a diaphragm in a hydraulically-actuated pump, a method of mounting such a device on a pump, and a pump fitted with such a device - A device for detecting breaks in a diaphragm of a hydraulically-actuated pump includes a body ( | 07-18-2013 |
20130195693 | GRAPHENE-DRUM PUMP AND ENGINE SYSTEMS - The present invention relates to pump systems and engine systems having graphene drums. In embodiments of the invention, the graphene drum can be utilized in the main chambers and/or valves of the pumps and engines. | 08-01-2013 |
20130209289 | Three Element Diaphragm Damper For Fuel Pump - A damper assembly for a fuel pump includes at least one diaphragm assembly formed by joining two metal diaphragms to respective two sides of an imperforate central plate, thereby creating a pair of closely spaced diaphragms, each acting upon its own gas volume. Preferably, the diaphragm assembly has (a) a circular or polygonal central plate, (b) a first circular diaphragm having a rim portion sealingly secured as by welding to the plate and a relatively thin, flexible, convex portion projecting from one side of the plate and defining a first pressurized gas volume, and (c) a second circular diaphragm having a rim portion sealingly secured as by welding to the plate and a relatively thin, flexible, convex portion projecting from the other side of the plate and defining an independent second pressurized gas volume. The diaphragm assembly can be supported radially inside, outside, or on the weld. | 08-15-2013 |
20130230417 | HIGH-PRESSURE PUMP - A high-pressure pump has an elastic member arranged in a damper chamber between a first diaphragm and a second diaphragm. The elastic member is always in contact with both diaphragms while the high-pressure pump is operated. When the diaphragms are further vibrated due to a resonance under a situation where a frequency of the pressure pulsation of low-pressure fuel is in agreement with the characteristic frequency of the diaphragms, the elastic member restricts the deformation of the diaphragms. Therefore, the resonance of the first diaphragm and the second diaphragm can be restricted. | 09-05-2013 |
20130243622 | Pump - A pump that has a cavity ( | 09-19-2013 |
20130309105 | PRECISION PUMP WITH MULTIPLE HEADS - A pump for one or more different process fluids is provided including a pumping chamber having a process fluid inlet and outlet coupled to a process fluid valve on each pumping chamber for selectively preventing and allowing flow of process fluid through the pumping chamber. An actuation mechanism for pumping actuating fluid to actuating fluid chambers is provided that is in communication with the actuating fluid chambers to permit flow into each actuating fluid chamber of incompressible actuating fluid. A diaphragm separates each pumping chamber from an associated actuating fluid chamber for separating process fluid from actuating fluid. The actuation mechanism is removable by a quick disconnect that provides for disconnection of the activation mechanism without affecting process fluid. Operation of the actuation mechanism to displace actuating fluid causes actuating fluid to flow only into each actuating fluid chamber having an opened process fluid valve, resulting in pumping. | 11-21-2013 |
20140093406 | Housing with two housing parts made of plastic - The invention refers to a housing ( | 04-03-2014 |
20150050166 | FLUID PUMPING SYSTEMS, DEVICES AND METHODS - Embodiments of the present invention relate generally to certain types of reciprocating positive-displacement pumps (which may be referred to hereinafter as “pods,” “pump pods,” or “pod pumps”) used to pump fluids, such as a biological fluid (e.g., blood or peritoneal fluid), a therapeutic fluid (e.g., a medication solution), or a surfactant fluid. The pumps may be configured specifically to impart low shear forces and low turbulence on the fluid as the fluid is pumped from an inlet to an outlet. Such pumps may be particularly useful in pumping fluids that may be damaged by such shear forces (e.g., blood, and particularly heated blood, which is prone to hemolysis) or turbulence (e.g., surfectants or other fluids that may foam or otherwise be damaged or become unstable in the presence of turbulence). | 02-19-2015 |
20150104336 | Scalable Pumping Mechanism Utilizing Anti-Synchronized Poly-Diaphragm Stack - A diaphragm pump including at least three body plates and at least two diaphragm assemblies positioned between the at least three body plates. A series of drive fluid passages communicate with a drive side of the two diaphragm assemblies and a series of pumped fluid passages communicate with a pump side of the two diaphragm assemblies. There is an inlet check valve communicating with the series of pumped fluid passages and an outlet check valve communicating with the series of pumped fluid passages. At least one of the body plates is a doubled faced plate having either drive fluid passages on both faces or pumped fluid passages on both faces. | 04-16-2015 |
20150337827 | Four-compression-chamber diaphragm pump with multiple effects - A four-compression-chamber diaphragm pump with multiple effects includes an eccentric roundel mount with four cylindrical eccentric roundels, a pump head body with four operating holes, and a diaphragm membrane with four annular positioning protrusions. A basic curved groove or other vibration-reducing first positioning structure is circumferentially disposed around each operating hole while a basic curved protrusion or other second vibration-reducing second positioning structure is provided in the diaphragm membrane for suitably coupling with the corresponding groove or other first positioning structure upon assembly, resulting in a shortened length of moment arm from the basic curved protrusions or other vibration-reducing positioning structures to respective downwardly-extending annular positioning protrusions in the diaphragm membrane, and consequently reduced vibration noise and resonant shaking in comparison with a conventional four-compression-chamber diaphragm pump. The cylindrical eccentric roundels each comprises an annular positioning groove arranged to receive one of the downwardly-extending annular positioning protrusions of the diaphragm membrane and a sloped top ring extending between annular positioning groove and a vertical or inverted frustoconical flank of the eccentric roundel, resulting in an extended service lifespan of the four-compression-chamber diaphragm pump. | 11-26-2015 |
20220136495 | FOUR-CYLINDER DIAPHRAGM PUMP - A four-cylinder diaphragm pump includes a pump body having four pump chambers, and a drive mechanism that expands and contracts the four pump chambers with a predetermined phase difference, in which the pump body includes a first diaphragm having two diaphragm portions on a same plane, and a second diaphragm having two diaphragm portions on a same plane disposed to be located to be parallel to or coplanar with the plane of the first diaphragm, each of the diaphragm portions of the first diaphragm and the second diaphragm constitute a portion of a different pump chamber, and the drive mechanism is configured to move the diaphragm portions of the first diaphragm and the second diaphragm forward or backward with respect to the corresponding pump chambers with a predetermined phase difference. | 05-05-2022 |