Abstract: The cartridge assembly for dispensing at least one component comprises a cartridge having a rigid cartridge cylinder, a package assembly having a membrane containing liquid chemical, the membrane having a closed inlet end and an outlet end and a piston assembly disposed in said cartridge assembly. The piston side end of the inner wall of the cartridge cylinder and the front of said piston assembly are formed thus that the membrane is turned outside-in within itself by the action of the piston provided with a sealing lip such that the inner surfaces of the turned outside-in wall portions of the membrane are sliding relative to each other during emptying of the package, sealing the gap betweeen the double walls. Such a device requires considerably less dispensing force which is important particularly for a hand driven apparatus, and allows an efficient sealing of the liquid while dispensing.

Abstract: A device mountable on a material container for dispensing fluid or pasty material therefrom is disclosed. The device comprises a first pump (10) for selectively dispensing the material from the container through an outlet (31), said first pump being mountable on the container by means of an attachment member (11), and a manual actuation member (30) movable between an inoperative position and an actuated position. The device further comprises a second pump (20) for dispensing compressed air at the same time as the material is dispensed. The second pump comprises two elements (21, 22), i.e. a plunger (21) and a pump cylinder (22) slidably housing the plunger (21), and is designed to feed a flow of compressed air to the outlet (31) in order to spray the material. One of said two elements (21, 22) of said second pump (20) is secured to said attachment member (11) of the first pump (10), whereas the other of said two elements (21, 22) is secured to the actuation member (30).

Abstract: A mechanical twist-dispenser having a plurality of product compartments within a housing, a rotatable screw member axially disposed within each product compartment, and a piston axially slidably disposed within each product compartment. The piston has a central threaded aperture which cooperates with the screw member to move the piston axially within its product compartment with the relative rotation of its associated screw member. A master gear is positioned between and contacts each screw member gear such that the rotation of the master gear causes the screw member to rotate and subsequently move the piston axially within the product compartment so as to dispense the product within each compartment.

Abstract: A product dispenser includes a housing defining an inner space for a product; a piston member movably disposed in the inner space for dispensing product from the inner space; a ram slidably associated with the housing for driving the piston in the inner space, and movable relative to the housing between an active position wherein the ram is aligned with the piston for dispensing product, and a neutral position wherein the ram is not aligned with the piston whereby the ram in the neutral position is slidable relative to the housing without dispensing product.

Abstract: A dispensing cartridge for use with a hand-held applicator has a chamber with a first section and a second section. The second section has a smaller cross-sectional area than the first section such that the chamber has a stepped configuration. A piston is slidably received in the chamber and has a head portion that is received in the second section and a tail portion that is received in the first section. As a force is applied to the tail portion, the head portion advances to expel material through an outlet opening. The cartridge is especially useful for dispensing compositions having a relatively high viscosity such as dental pastes and the like.

Abstract: Novel hand-held single or two-component viscous fluid material dispensing gun, particularly though not exclusively useful for dental use and the like, and using in-line longitudinal drive racks and fluid cartridge containers, the racks being driven longitudinally along a barrel by an electric motor that is preferably mounted and controlled in the handle transversely depending below the barrel.

Abstract: A dual interlocked chamber dispenser having pumps for each chamber. An adapter which connects the chambers to the pump shell is snap fit to the chambers. The chambers may be of various desirable ergonomic shapes.

Abstract: A pipettor operable by a lateral pushing movement of a thumb of a user. The pipettor includes an ergonomically designed non-tubular body that has an operating surface and a supporting surface. The body of the pipettor is configured to be grasped between the thumb placed on the operating surface and at least one finger placed on the supporting surface in an opposing manner. The pipettor includes one or more fluid pick-up means disposed in the body of the pipettor for drawing a calibrated volume of fluid into the pipette tip. The fluid pick-up means is operable by the lateral pushing movement of the thumb against the operating surface of the body of the pipettor. Dispensing means is provided for dispensing the calibrated volume of fluid from the pipette tip. The dispensing means is operable by the lateral pushing movement of the thumb against the operating surface. A tip holder is coupled to the body and is configured to mate with a pipette tip.

Abstract: A double-barreled syringe is provided which includes a mixing tip which is detachable after the tip is locked to the syringe body, so that the tip may be replaced by a locking cap. Locking occurs when a neck extending from the body between two shoulders is inserted into a bore in the tip (or, alternatively, the cap) and the tip is rotated so that two symmetrically opposed tabs attached to the tip are each received within a recess determined by a shoulder and a locking rib attached to the shoulder, and two diametrically opposed detents extending from the neck are each received within a recess in the bore surface.

Abstract: A manually operated ejector device for containing a cartridge loaded with viscous material, having a chamber with a front end adapted to contain the cartridge and a back end, a piston disposed in the chamber for engagement in the cartridge, a handle arranged at the back end of the chamber, and a lever displaceable relative to the chamber and the handle for driving the piston in order to drive the latter in its longitudinal direction toward the front end of the chamber. To improve the safety of the handling of the ejector device, the piston has a spring case and a plunger, the spring case having a chamber whose one end is closed and whose other, front end has an opening, the transition between the chamber and the opening being limited by an abutment surface facing the chamber.

Abstract: A two-component fluid dispenser which can accurately mix two liquids of varying viscosity and then precisely deliver the mixture formed in discrete amounts. The mixture of the two components is delivered from a single delivery tube in a manner such that none of the mixture remains within the delivery tube at the completion of each mixing and delivery cycle. In one form of the apparatus, the single delivery tube of the apparatus is operably coupled with conventional hypodermic syringes of various sizes so that different fluids can be mixed in different ratios.

Abstract: The invention pertains to a device (10) for mixing and delivering a multicomponent molding compound. The device has a receptacle (16) having pistons (58,60) that can be operated by means of a drive unit for emptying at least two film bags (22,24) filled with individual components of the multicomponent molding compound, a static mixer (30) and a headpiece (28), connected to the film bags (22,24). The headpiece has separated flow channels (52) open towards the film bags (22,24) and leading into the static mixer (30). The static mixer (30), the headpiece (28) and the film bags (22, 24) form an integral unit (32) which is disposable, the unit inserted into and removed from the receptacle (16) after its use.

Abstract: The invention provides systems, methods, and apparatus for dispensing liquids. According to one method, a plate is provided having a plurality of wells. At least one marker is also provided and is associated with at least some of the wells. The plate and marker are moved relative to a plurality of liquid dispensing elements, and the presence of the marker is sensed with a sensor that is disposed at a known location relative to the dispensing elements. The sensing of the marker indicates that at least some of the wells are aligned with the dispensing elements. As such, liquid is dispensed from the dispensing elements and into the aligned wells after sensing the presence of the marker.

Abstract: The present invention provides a dispensing pump for dispensing a plurality of fluids simultaneously but separately through a spout. The spout has a plurality of discharge orifices and a closure associated with the spout for closing the discharge orifices. The closure is sized and adapted to seal all discharge orifices and further includes at least one plug seal for sealing at least one respective discharge orifice but has fewer plug seals than discharge orifices.

Abstract: The positive displacement pump delivers the products uniformly and with a low force to actuate the pump. The uniform delivery results from a close slideable fitting of the upper part into the lower part. A low force to actuate is accomplished in part by reduced surface area contact of the upper portion and lower portion during slideably interfitting operation. This is accomplished preferably by having transverse ribs on the exterior surface of the upper part and longitudinal ribs on the interior surface of the lower part. As a result the contact of the upper part and lower part during use is a transverse rib/longitudinal rib contact. The longitudinal ribs preferably are parallel to the vertical axis of the base with no draft angle. Further, there is a locking mechanism between the an upper part shroud and rams located in the lower part. The locking mechanism controls the movement of the reusable shroud.

Abstract: A proportioning system 20 includes first and second cylinder and piston arrangements 26, 28 with an actuator 30 operably engaging the first and second cylinder and piston arrangement 26, 28. By changing the diameter and/or stroke of the pistons 54, 56, the mix ratio of two dispensed fluids changes. By changing the pivot point 32 of the actuator 30, the stroke length can be changed. The proportioning system 20 also includes a safety mechanism which prevents a concentrated fluid from being dispensed should the reservoir of diluting fluid be depleted.

Abstract: The dispensing appliance for at least two components comprises a metering pump assembly with a housing comprising a metering cylinder for each component, each metering cylinder having an inlet and an outlet and a displacement plunger. The metering cylinders have eccentric outlet noses which end in a double outlet with a common outlet nozzle having their centers on a straight line which connects the centers located of the two metering cylinders and between the centers of the metering cylinders. In a preferred embodiment the cross sectional area of any pair of cylinder/displacement plunger combination between ratios of 1:1 and 20:1 is substantially equal. Such an assembly is modular, lightweight, highly compact, cost effective and can be easily disassembled for cleaning and maintenance.

Abstract: A two-chamber metering dispenser 1 for liquid and/or paste-like media is equipped with two containers 2, 3 made of plastic, which are arranged in parallel positions next to one another and are provided each with a hand-operated metering pump and with a follower piston. The follower piston is tightly in contact over the entire circumference of the inner surface of the containers. In order to optimally utilize the hollow space in the case of an elliptical outer cross-sectional shape, and to guarantee a tight contact between the follower piston and the inner surfaces of the container walls, the two containers 2, 3 form a common outer jacket 10, which has an elliptical cross-sectional shape, and the containers are separated from one another by two middle walls 14, 15, which are arched against each other symmetrically to the short axis 12 of the ellipse.

Abstract: The assembly comprises a pair of substantially identical unitary plastic molded units, each unit having a tubular stem formed with a piston at one end and a nozzle head at the other. Each unit has a female snap-type connector facing to one side and spaced therefrom a male snap-type connector facing to the same side, the molded units being disposed side-by-side with the male snap-type connectors snappingly received into the female snap-type connectors of the respective stems.

Abstract: A dispensing system has a gas-powered pump 5 supplied with gas through an inlet 16 from a supply 7 when an actuation valve 11 is operated, the actuation valve also causing the opening of a dispense valve 9 in the outlet 18 of the pump. Gas supplied to the inlet 16 displaces a drive piston 35 against the action of a return spring 41. A rod 31 movable by the drive piston 35 extends into a pumping cylinder 13 where it drives a two-part pumping piston 33 over a substance dispensing stroke. As the substance is being dispensed by the piston 33 a fresh charge of the substance is drawn into the cylinder through a substance inlet 27 connected to a supply 3, which may be a bag-in-box. During the return stroke, lost motion between an inner piston part 43 fixed to the rod 31 and an outer collar-shaped piston part 51 is adjustable by limit switches (109, FIG. 5B) or locking pins (99, FIG. 5A). The actuation valve may be push-button operated (FIGS. 4A and 4B).

Abstract: The manually operated dispensing device for a double dispensing cartridge comprises a double thrust ram having a toothing and a drive means which is actuated by a trigger lever and which jointly acts on the double thrust ram, this drive means having a drive member which acts via a toothing on the toothing of the double thrust ram, an arc compensating element being arranged between the drive member and the trigger lever. The drive member is guided in such a manner that it is able to make a linear motion during its advance stroke but no swivelling or tilting motion but can make a swivelling motion for disengaging the double thrust ram or for the return stroke movement of the drive member, the arc compensating element for the trigger lever being a compensating link, pivotably connected at its one end to the trigger lever above its fulcrum by a first fulcrum pin and at its other end to the drive member by a second fulcrum pin.

Abstract: A dental product is provided packaged in a telescopically arranged multi-cavity dispensing container having at least two cylinders in an upper body thereof. Peroxide and baking soda are placed as active ingredients in separate respective semi-solid streams, each stream being in separate ones of the cylinders. Uniform dispensing of each stream to deliver relatively equivalent ribbon length of each stream by incorporating a synthetic linear anionic polycarboxylate to adjust viscosity. Preferred polycarboxylates are homopolymers of acrylic, methacrylic and maleic acids, most especially a copolymer of vinyl methyl ether and maleic acid or anhydride.

Abstract: A product dispenser includes a housing defining an inner space for a product; a piston movably disposed in the inner space for dispensing product from the inner space; a ram slidably mounted to the housing for driving the piston in the inner space, and rotatable relative to the housing between an active position wherein the ram is aligned with the piston for dispensing product, and a neutral position wherein the ram is not aligned with the piston whereby the ram in the neutral position is slidable relative to the housing without dispensing product.

Abstract: A fibrin glue dispenser including a spring biased rack. The rack spring is a coil spring having substantially linear characteristics along its operating length. The rack spring forces first and second plungers into first and second loaded syringes to dispense thrombin and fibrinogen into first and second exits such that the admixture of the two occurs for forming fibrin glue away from the exists. A dispensing lever can be controlled as to the fibrin glue formation to dispense either drops of fibrin glue or an elongate line of fibrin glue.

Abstract: The present invention generally refers to a dispenser for a liquid medium consisting of two components. The dispenser in particular comprises two accomodation compartments for two different components of the material to be dispensed. Each of the accomodation compartments has an outlet and a mixer connected thereto. The mixer is manually adjustable by means of an adjuster and changes the ratio of the supplied components of the medium. Finally, the dispenser comprises a dispenser nozzle for the medium to be dispensed, which is connected to the mixer.

Abstract: A product dispenser includes a cartridge containing a product; a housing having a base member and a cartridge receiving member movably mounted to the base member between a shipping position wherein the cartridge receiving member is substantially extended from the base member, and a use position wherein the cartridge receiving member is at least partially retracted relative to the base member from the shipping position, the cartridge receiving member having a sidewall defining an interior space for receiving the cartridge; an access defined by the sidewall for installing and removing the cartridge in the interior space; structure associated with the housing for dispensing the product from the cartridge; and structure for resisting dispensing motion of the cartridge receiving member relative to the base member from the shipping position toward the use position.

Abstract: A bottle for the metered distribution of fluid cosmetic products, comprising a reservoir (1) with two chambers (2, 3) for two products to be distributed simultaneously. Each chamber (2, 3) has a pump (8, 9) comprising an actuating rod (10, 11), at least one push button (12), provided with an outlet opening, coacting respectively with the actuating rods (10, 11). The reservoir is constituted by a hollow body (1) open at one end and comprising a separation wall (4) defining the two chambers (2, 3). A collar (5) is welded in the reservoir (1) and onto the free end of the wall (4), and is provided with two openings (6, 7) facing respectively the chambers (2, 3). The pumps (8, 9) are secured respectively in these openings (6, 7).

Abstract: A dental product is provided packaged in a telescopically arranged multi-cavity dispensing container having at least two cylinders in an upper body thereof. Peroxide and baking soda are placed as active ingredients in separate respective semi-solid streams, each stream being in separate ones of the cylinders. Uniform dispensing of each stream to deliver relatively equivalent ribbon length of each stream by incorporating a synthetic linear anionic polycarboxylate to adjust viscosity. Preferred polycarboxylates are homopolymers of acrylic, methacrylic and maleic acids, most especially a copolymer of vinyl methyl ether and maleic acid or anhydride.

Abstract: An add-on valve assembly for dual-component cartridge has a valve member and a retainer nut which secures the valve member to a dual-component material cartridge. The valve member includes a body having a forwardly extending threaded nozzle and rearwardly extending top and bottom tubes. First and second passageways are formed in the top and bottom tubes, respectively, and extend through the body and nozzle. A valve stem extends generally vertically within the body and is rotatably mounted therein. The valve stem is formed with top and bottom holes which align with the first and second passageways, respectively, when the add-on valve assembly is rotated to an open position and which extend perpendicular to the first and second passageways, respectively, when the add-on valve assembly is rotated to a closed position. The tubes are adapted to extend within respective passageways of the material cartridge and communicate with a pair of chambers formed within the material cartridge.

Abstract: Apparatus comprising a housing (1) for receiving at least one storage cartridge for the product with a rear thrust wall for the product, a thrust piston (2), a drive comprising a front sprocket (5) for driving the piston (2) by friction, actuated by an intermediate feed rod (6) driven by a motor (3) in a reciprocating motion, and a control lever (4). The drive is adapted to effect any desired application of the product by a single actuation of the control lever (4).

Abstract: A two component cartridge is attached to a dispensing appliance with a coding to enable proper attachment. The cartridge has a flange with a coding cutout. The dispensing appliance has a holder for receiving the flange. The holder has a coding protrusion that is complementary with the coding cutout. This cartridge has outlets with a coded attachment for attaching accessories. The coding feature facilitates quick and easy attachment of accessories, such as a mixer or cap to the cartridge outlets.

Abstract: A dispenser which comprises first and second containers connected together in a head to tail arrangement by screw threads. The first container has a piston therein for dispensing material from the first container. The second container has a piston therein for dispensing material from the second container The piston of the first container includes a push rod which engages and moves the piston disposed within the second container when the piston of the first container is moved.

Abstract: The dispensing appliance for at least two components comprises a metering pump assembly with a housing consisting of three sections, held between a front frame plate and a rear frame plate connected by four tie rods and comprising a metering cylinder for each component, each metering cylinder having an inlet and an outlet and a displacement plunger. The outlet nozzles of the metering cylinders end in a double outlet with a common outlet nozzle. The front section is composed of the double outlet having two sleeves as spacers, the middle section is a double inlet and the rear section being spacer sleeves. The metering cylinders have external flanges secured between the sleeves of the double outlet and the double inlet. Such an assembly is modular, lighweight, highly compact, cost effective and can be easily disassembled for cleaning and maintenance.

Abstract: A discharge unit (1) contains two separate delivery units (15) to be actuated in common through which the medium flows along a module (35) separate from two base bodies (4,5) to two atomizer nozzles (48) so that due to their spray cones overlapping each other the two separately emerging media are intermingled in utmost fine dispersion and, e.g. with the formation of a gelling blended medium, react with each other. As a result of this two media reacting with each other chemically or physically can be intermingled not before being outside of the discharge nozzles (48) and thereby simultaneously applied to the region of application, e.g. a mucuous membrane.

Abstract: The dispenser is a rigid type multi-chamber, refillable dispenser where only the substance containing chambers need to be discarded and replaced. At the point of the chambers interconnecting into the upper portion of the dispensers there is a cutter to break the seal on the chambers. In operation stabilized piston rods fit into each chamber and push against pistons having a deformable upper surface to expel the substance. The refill chambers have off-center exit openings whereby the distance to the dispenser nozzle exit is minimized. The push rods are stabilized by being of a size and shape to be proximate the walls of the chambers while actuating the pistons.

Abstract: A product dispenser, comprising a cartridge containing a product; a housing having a base portion and a cartridge receiving portion movably mounted to said base portion, said cartridge receiving portion having a sidewall defining an interior space for receiving said cartridge; access means defined by said sidewall for installing and removing said cartridge in said interior space; and means associated with said housing for dispensing said product from said cartridge.

Abstract: A product dispenser includes a cartridge containing a product; a housing having a sidewall defining an interior space for receiving the cartridge; an access cutout formed in the sidewall for installing and removing the cartridge in the interior space; and a ram and plunger structure associated with the housing for dispensing the product from the cartridge.

Abstract: A double-dispenser system for dispensing medicinal liquids has two jet-trigger pumps housed in an outer casing having at least one front opening and one rear opening. Each jet-trigger pump is provided with a dosing mechanism for dispensing a predetermined dose of medicinal liquid. Dispensation from the two pumps may be triggered simultaneously by a trigger device common to the two pumps and accessible from the outside of the casing. The pumps incorporated in the double-dispenser system may be of the type having a pump body and a piston housed in an elastic bottle. For each pump, relative movements between the piston and the pump body causes changes in the relative-displacement between the piston and the pump body such that medicinal liquid is initially loaded into a medicine-holding cavity within the pump and subsequently dispensed.

Abstract: The device for mixing and discharging a self-curing two-component molding composition comprises a two-plunger mixing gun having a gun body 1 and a receiving shaft 4 for 2 cartridges 11a, 11b filled with the individual components of the molding composition, and a static mixer 6 adjoining the receiving shaft 4 and with an outlet nozzle 7. In this arrangement, the cartridges 11a, 11b comprise separate cardboard sleeves 22, which are respectively provided with a terminating plate 23 and a plunger element 24. The cardboard sleeves are introduced into the receiving shaft 4, which can be closed by a pressure-resistant cartridge housing 5 enclosing the cardboard sleeves 22 flush with them. Also provided between the static mixer 6 and the cardboard sleeves 22 is a head piece 16, which can be inserted into the receiving shaft 4 and has separate flow channels 28a, 28b which are open towards the cardboard sleeves 22 and merge directly at the inlet into the static mixer 6.

Abstract: A multi-chamber dispenser for flowable materials includes a cartridge having a plurality of chambers disposed in side by side relationship. A pump has a plurality of longitudinal passageways corresponding to the number of chambers with each passageway being insertable into a chamber. The pump and cartridge are provided with guide structure to assure the proper positioning of the components and to permit the pump and cartridge to be readily mounted together and to be disassembled so that the pump may be used with a different cartridge after the contents have been dispensed.

Abstract: A water displacement block for a beverage brewer, mounted on a pivot and connecting rods and suspended immediately over a hot water tank and which, at a specific time in the brewing cycle, is lowered into the tank, thus causing water to overflow so as to dispense the correct amount of hot water into the brewing machine. Next to the hot water dispensing tank a secondary water tank is mounted which is connected to a water pump driven by the same motor which drives the beverage brewer. During a single cycle, the pump will discharge the same amount of water into the hot water tank as was dispensed when the water displacement block was lowered into the tank. The cold water entering the system is pre-heated because it passes downwardly and under a partition in the tank adjacent the hot water is the discharge portion of the tank.

Abstract: A dental syringe system including a gun element, for association with a tip element, to mix and dispense respective dental materials of and while the materials yet have plastic or flowable consistency. The gun has a chamber in which to load cartridges of respective such materials, a motor, two plungers, a ram to move relative to the gun, and a trigger-and-gears mechanism to operate the plungers in association with the motor, and separately to operate the ram. The trigger is mounted to move to and between several positions. At one such position, the trigger operates the motor to advance the plungers into respective sites where such cartridges may be loaded and, when cartridges are so loaded, to express materials from the cartridges and the gun. At a subsequent such position, the trigger extends the ram from the gun, and the motor and the plungers disengage. The tip element has a trans-tip passage with a cavity, vanes within the cavity, and a channel from the cavity.

Abstract: A dental product is provided packaged in a telescopically arranged multicavity dispensing container having at least two cylinders in an upper body thereof. Peroxide and baking soda are placed as active ingredients in separate respective semi-solid streams, each stream being in separate ones of the cylinders. Uniform dispensing of each stream to deliver relatively equivalent ribbon length of each stream by incorporating a polyphosphate salt to adjust viscosity. Preferred salts are tripolyphosphates, hexametaphosphates and pyrophosphates.

Abstract: A pasty mass such as a mixture of two components of a synthetic resin composition for otoplastic purposes can be displaced from a cartridge by pistons driven by an electric motor within a housing of the device which has a cartridge holder and wherein the pistons are displaced by rotation of a shaft which draws a stainless steel belt and a yoke in the direction of the cartridges to displace the piston rods engaged by that yoke.

Abstract: The present invention generally refers to a dispenser for a liquid medium consisting of two components. The dispenser in particular comprises two accomodation compartments for two different components of the material to be dispensed. Each of the accomodation compartments has an outlet and a mixer connected thereto. The mixer is manually adjustable by an adjuster and changes the ratio of the supplied components of the medium. Finally, the dispenser comprises a dispenser nozzle for the medium to be dispensed, which is connected to the mixer.

Abstract: A pump type fluid dispenser comprises an outer barrel closed at its lower end with a plunger slidably mounted in the upper end of the barrel. A dispensing spout for the fluid within the combined chamber of the barrel and plunger is located at the upper end of the plunger. A leakage collection chamber is disposed around the plunger between the piston head of the plunger and the top of the barrel.

Abstract: A dispenser for storing and dispensing two flowable materials, preferably comprising a single piece container having a driving member, a storage member having an discharge nozzle defining two separate passages and two cylinders each communicating with a separate one of said passages and a hinged member joining the driving member and the storage member by way of living hinges, the driving member defines two pistons located and sized to sealingly engage the cylinder when the driving member and the storage member are folded about the living hinges into engagement with one another; the cylinders being isolated from one another. When squeezing force is applied the driving member and the storage member act against one another to expel the materials through the passages of the discharge nozzle for blending of the ingredients upon exit from therefrom.

Abstract: A dispenser for dispensing together a first fluid material and a second fluid material comprising a first material chamber (1a) and a second material supply chamber (1b) for containing first and second fluid materials, and a headpiece (2) comprising a first pump chamber (24) having a first pump piston (27) and being connectable to a first discharge channel (30) and to the first material supply chamber (1a) and a second pump chamber (19) having a second pump piston (26) and being connectable to a second discharge channel (31) and to the second material supply chamber (1b), and having a coaxial arrangement.

Abstract: An apparatus for dispensing multiple fluids from nested containers, while simultaneously venting the fluid containers, includes a first container for containing a first fluid, a second container, nested within the first container, for containing a second fluid, and a manually operable pump for pumping fluid from the containers to dispense a mixture of the fluids from the apparatus. The pump includes (i) a pump actuator for actuating and deactuating the pump, (ii) a reciprocating fluid conduit, which reciprocates upon actuation and deactuation of the pump actuator and (iii) a discharge nozzle for dispensing the mixture of the fluids from the apparatus upon actuation of the pump.

Abstract: A dispensing device and disposable mixer for a plurality of fluids is provided in a combination in which the dispenser stores the fluids separately and delivers them to an orifice in which the fluids are maintained in separation to the point of interface between the orifice and the disposable mixer with .?.means.!. .Iadd.an arrangement .Iaddend.in the inlet end of the mixer having low resistance to the flow of the fluids for preventing cross contamination between the fluids and optionally provided with .?.means.!. .Iadd.an arrangement .Iaddend.at the inlet end of the mixer for both enhancing the mixing action downstream and for maintaining the integrity and separation between the fluids.