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 novel two-part fluid dispensing and technique using fluids of similar or widely different viscosities and in flexible plastic or similar cartridges of a similar or different volumes, and with adjustable dispensing ratios by forcing the fluids out of their respective cartridges in response to variable air pressure into a static mixer, and thence along a dispensing flexible pinch tube, the opening and closing of which is controlled by a pinch valve operated in response either to manual or micro-processor-controlled control.

Abstract: A low cost, manually operated, postmix juice dispenser for use with a disposable concentrate package includes a water tank manually filled with water and ice, a water pump and a manually operated pump handle. The disposable concentrate package is preferably a flexible pouch with a built-in concentrate pump that connects to the pump handle.

Abstract: The mixer for a dispensing appliance having a double cartridge is provided at its dispensing end with an attachment which is rotatably mounted thereon by snap-in coupling parts. Moreover, the mixer is provided at its dispensing end with a circular bead and the attachment is provided with a corresponding groove. The bead and the external diameter of the dispensing end of the mixer, on one hand, and the groove and the internal diameter of the attachment, on the other hand, having such dimensions that the attachment is rotatably maintained on said mixer. The design of the snap-in coupling parts allows the use of the same mixer for all kinds of attachments, whereby a rational manufacture becomes possible. Moreover, the rotatable coupling of the attachment allows a fine adjustment of the dispensing end of the attachment with respect to the application surface.

Abstract: A pump-type device for distributing or spraying a product has first and second chambers which receive the product and a distribution fluid (gas), respectively. First and second pistons pressurize the product and the distribution fluid in the chambers as the movable member of the pump assembly begins moving in a first (downward) direction, then distribution passageways are opened to allow discharge of the product and the distribution fluid. Reverse movement of the movable member allows a subsequent dose of the product and distribution fluid to refill the chambers. The device is particularly well suited for spraying of relatively viscous products.

Abstract: The present invention relates to a dispenser for dispensing two liquid products. The dispenser permits feed-out of the viscous products either separately or together.

Abstract: A dispensing applicator includes a body with a handle, a pivotable lever and a front holder with a receptacle that is adapted to removably receive a dual chamber cartridge. In certain embodiments, the majority of the cartridge contents are expelled during a single stroke of the lever, an advantage when used for single patient use in dental or medical fields. In other embodiments, the holder is rotatably connected to the body so that the holder and the cartridge can be moved as needed in an arc in order to vary the orientation of the cartridge relative to the applicator handle. The rotatable connection enables the cartridge to be moved to any one of a number of different orientations as may be desired to provide optimum maneuverability of the applicator in use and to enhance the operator's vision of the application site.

Abstract: A dispenser for dispensing relatively low viscosity material includes a plunger that is movable to advance the plunger in the chamber. A full stroke of the lever dispenses no more than a single drop of material from the chamber. A cap is detachably connected to an outlet of the chamber and includes an arm in contact with the lever when the cap is connected to the outlet for releasably retaining the lever in a fixed position to prevent unintentional discharge of material from the chamber. A stop comprising one or more sets of teeth is connected to the lever for hindering advancement of the plunger after the lever is released. In certain embodiments, the dispenser includes two side-by-side chambers, and a mixing tray has a well with side recesses for receiving protruding outlets of the chambers.

Abstract: A dispensing system for dental material made of two components has a dual chamber cartridge that releasably connects to an applicator. The chambers of the cartridge are located in an over-under orientation relative to the user's grip on the applicator, enabling the system to be especially useful for placing dental material in regions of the patient's oral cavity that are difficult to access. Certain embodiments of the invention include a static mixing assembly having a swivelable cannula, and an exit conduit of the mixing assembly is optionally curved along its length. Other aspects of the invention relate to a reusable hygienic sheath useful for covering a dual chamber cartridge as well as a single chamber cartridge.

Abstract: An inverting bag co-dispenser for dispensing a plurality of fluids simultaneously but separately through, a spout and, with a predetermined discharge volume ratio for each fluid. An upper portion defining a housing has a spout connected thereto. The housing has an outer wall and a plurality of side-by-side annular members supported internally to the outer wall. A plurality of fluid containing flexible bags are connected to and supported in the upper portion, one each of the bags being located inside one each of the side-by-side annular members and in fluid communication with the spout. The bags have closed bottoms, perimeters slidably fitting inside the annular members, and a bag wall thickness. A bottom portion has a base and an outer wall extending upwardly therefrom. The bottom portion also has a plurality of upright posts connected to the base and located inside the outer wall.

Abstract: A foil bag package, particularly for a mortar mass, includes at least one foil bag (1, 2) and a base part (3, 4) located at an end surface (1a, 2a) of the foil bag. The base part has an outflow passage (5, 6) for conveying the mortar mass through a discharge stub (7) from the foil bag (1, 2) and a piercing device for the foil bag. The piercing device has at least two piercing spatulas (8, 9) disposed in a parallel and laterally spaced relation and approximately parallel to the axis of the outflow passage (5, 6) and located within an axial projection of the outflow passage extending towards the foil bag.

Abstract: A dispensing container, such as a double-barrel cartridge used in dispensing dental material, matingly receives a sliding cap that maintains a seal between material in the barrels and the atmosphere. The cap includes a body and a gasket within the body, and the cap also includes a cam portion that shifts the body slightly away from an outlet of the container as the cap is moved toward a closed position to seal the container. Once the cap is in a fully closed position, the cam portion enables the body to shift somewhat closer to the container outlet in order to increase the compression of the gasket between the body and the outlet. Optionally, an orienting section is provided for insuring that the cap is coupled to the container in only one certain orientation, so that the likelihood of cross-contamination of material within the barrels due to residual material on the gasket is substantially reduced.

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: The present invention is directed to an apparatus for dispensing a two-part adhesive. The apparatus includes a cartridge body having two vessels for containing separate liquid components, respectively. Each vessel has a corresponding nozzle with an orifice in fluid communication with the corresponding vessel. The apparatus also has a cap frangibly connected to the nozzles to seal the orifices prior to opening the vessels. The cap is constructed so that separation from the nozzles opens the orifices. Once disconnected, the cap is removably securable to the nozzles. The cap also has a receptacle that conforms to the profile of the nozzles to prevent cross-contamination of the liquid components.

Abstract: A dispenser is provided for the concurrent dispensing of two different fluid materials. The dispenser has a first and second supply chamber for containing the two separate fluids, and a headpiece having a first pump chamber and pump piston connected to the first supply chamber and a first discharge channel, and a second pump chamber and pump piston connected to the second supply chamber and a second discharge channel. The first and second supply chambers have a coaxial arrangement.

Abstract: Disclosed is a refillable dispenser for separately dispensing each of two biological fluids contained therein for intermixing at a site outside of the dispenser to produce hemostasis or a tissue adhesive. The dispenser is compact, contains integrally formed internal reservoirs for the two biological fluids, an injection port on each reservoir for refilling the reservoir, and is designed for efficient filling without compromising the integrity of the sterile field. The dispenser is capable of dispensing the biological fluids, such as fibrinogen and thrombin, at either a focused point or in an aerosol mist. In addition, spray elements are disclosed for uniformly distributing the two biological fluids along either the interior surface or the exterior surface of an implantable vascular graft.

Abstract: A multi-cavity dispensing container is provided for the co-extrusion of at least two flowable materials. The container includes a refill cartridge and a reusable base. The cartridge contains a pair of separate parallel cylinders within which are carried the flowable materials. At a lower end of each cylinder is a piston head. The lower surface of the piston head is configured as a hollow recess. The reusable base is formed with a pair of separate parallel piston support posts. These posts are characterized by a central hub surrounded with at least two outwardly projecting arms. Tops of the posts can readily engage within the recesses of the piston heads. Consequently the refill cartridge and reusable base can be readily engaged and disengaged from one another.

Abstract: A double dispenser for fluid products, comprising, in a single casing (1), two chambers (2) filled with different fluids and each closed by a pump (3) provided with a valve, the two valves being actuated by a single pusher (5). The pusher (5) has a chamber into which open the outlets of the two valves. This chamber is divided by a wall (7) so as to form two separate chambers (6', 6") into which open respectively the outputs of the two valves. The wall (7) has two outlet openings (8', 8") respectively connected to the separate chambers (6', 6"). These outlet openings (8', 8") open into cavities (10', 10") of a dispensing nose (11) of elastically deformable material. The dispensing nose (11) has an outlet slot (12) sealingly closed by two lips (13) arranged to spread under the pressure of the mixed fluid arriving respectively in the cavities (10', 10") during depression of the pusher (5). The dispensing nose (11) comprises an intermediate partition (14) separating the cavities (10', 10").

Abstract: The present invention pertains to a trigger sprayer which is connectable to two container volumes containing separate liquids. The sprayer has a trigger that is manipulated to draw the separate liquids into two separate pump chambers and then supply the two separate liquids from the pump chambers to a discharge passage of the sprayer. In the discharge passage the two separate liquids are mixed together prior to their being dispensed from the discharge passage as a spray.

Abstract: The invention relates to an apparatus containing two syringes whose outlets terminate in a spray head with spray nozzle (atomizer). This apparatus is suitable for spraying, and where appropriate applying to a surface, two liquids as mixture. These liquids are preferably the components of an adhesive system, especially of a tissue adhesive.

Abstract: An applicator for applying a biocompatible adhesive containing human or aal protein as a principal ingredient to a surgical site of living body includes a housing to which a sterile gas is supplied, a sterile-gas supply tube connected to the housing, two adjacent sterile-gas ejecting nozzles for ejecting the sterile gas in the same direction, two adapters to which respective nozzles of syringe barrels are connected, and a pair of solution tubes, each having one end connected to the adapter and the other end protruded outwardly from the sterile gas ejection nozzle through an interior of the housing. Respective solutions supplied from the syringes via the pair of barrel adapters are ejected from the outlets of the solution tubes. The sterile gas is ejected from two sterile-gas ejection nozzles in the same direction. Consequently, the solutions are sprayed and mixed by the sterile gas, and then applied to the surgical site.

Abstract: Cutting-off device for viscous stock materials packed in can-like containers, more particularly filler materials and putties and hardener pastes. A device in the form of a disposable article for the simultaneous cutting-off of filler materials and hardener pastes dispensed from can-like containers can be mounted upon the dispensing apertures of the containers and includes a mounting plate (10) with connection pieces (12,32) and with dispensing apertures constructed within the upper region in the mounting plate and of a slider (40) displaceably retained and guided on the mounting plate (10), which, in dependence of the assumed position, closes or unblocks the dispensing apertures, and of two cutters that are moveable into the areas of the dispensing apertures.

Abstract: A cartridge for use in a dispensing gun for simultaneously dispensing and mixing a pair of chemically reactive fluid components maintained in separate chambers in the cartridge. One of the fluid components is contained in an elongated tube formed of a thin flexible film which is placed within a first chamber located either coaxially within an outer annular second chamber containing the other fluid component, or in a side-by-side relationship to the second chamber. Pistons are slidably mounted within the two chambers for simultaneously dispensing the fluid components therefrom when moved forward by plungers of the dispensing gun. In a first embodiment, the front end surface of one of the pistons is recessed from an outer end surface of the other piston to form a void space for collecting the collapsed flexible film therein to permit the outer piston to reach the full extent of its stroke and expel all of the fluid components from both the chambers.

Abstract: A dispenser includes a first container (12) for containing a component C and a cavity (30) for receiving a separate cartridge (60). A first piston (34) is received in the container (12) and a second piston (78) is received in the cartridge (60). A blade (48) extends between the piston (34) and piston (78) for slicing the separate cartridge (60) as the pistons move so that the component C and a second component C1 in the separate cartridge (60) are expelled from the dispenser. A valve arrangement (100) can be coupled to an outlet (18) for the dispenser in order to dispense the components C and C1 and a flexible sleeve (50) may be arranged in the container (12) between a sidewall of the container (12) and the piston (34) for sealing any space between the piston (34) and the sidewall of the container (12).

Abstract: A dispenser is disclosed which includes a container having a base, a cylindrical side wall and a lid. A piston is arranged within the container between component and an air space between the piton and lid. A diaphragm is arranged within the air space and is sealed to the container between a rim of the container and a rim of the lid so that an enclosed volume is defined between the diaphragm and the lid. A rod extending between the base and lid and passing through the piston and diaphragm is provided to reinforce the container. The lid includes an air inlet for allowing compressed air to enter the enclosed volume to expand the diaphragm to thereby move the piston to dispense the component from the dispenser. In a further embodiment the diaphragm is replaced by an air bag located within the air space and bearing against the piston and lid.

Abstract: The present invention relates to a portioning arrangement for portioning out liquid foodstuffs. For quick and easy disassembly of the portioning arrangement for cleaning of the parts thereof interlarded with foodstuff, a dispensing device (10) forming part of the portioning arrangement is releasable from a drive piston (17) driving the device (10), and the dispensing device (10) is also retractable or removable from a portioning chamber (11) of a dispensing unit (38), whereby the dispensing device (10) and the portioning chamber (11) can be easily cleaned separately.

Abstract: Gradient gels for electrophoresis are produced by an apparatus in which a pair of syringes are mounted on a support rack together with cams arranged for synchronous rotation. Cam followers engaged by the cams are linked to the syringe barrels, with each cam defining a distinct spiral path translated by one of the cam followers into a preselected rate or rate profile of volumetric discharge from one of the syringes as the cam rotates. With the rate or rate profile established by one cam being distinct from the rate or rate profile established by the other, a gradient or other variation in composition is obtained when the syringe discharges are combined into a common stream and directed to the gel enclosure for solidification into a gel. The gradient or variation in composition is determined by the cam profiles alone, and is independent of the rate at which the cams are rotated, and of whether or not the rotation is performed in a steady manner.

Abstract: A dispenser has a first container (12) for containing a component C and a cavity (30) for receiving a separate cartridge (60). A first piston (34) is received in the container (12) and a second piston (78) is received in the cartridge (60). A blade (48) extends between the piston (34) and piston (78) for slicing the separate cartridge (60) as the pistons move so that the component C and a second component C1 in the separate cartridge (60) are expelled from the dispenser. A valve arrangement (100) can be coupled to an outlet (18) for the dispenser in order to dispense the components C and C1 and a flexible sleeve (50) may be arranged in the container (12) between a sidewall of the container (12) and the piston (34) for sealing any space between the piston (34) and the sidewall of the container (12).

Abstract: A trigger actuated fluid dispenser for simultaneously dispensing disparate fluids separately stored in separate fluid compartments of a container includes side-by-side pump cylinders receiving side-by-side pump pistons reciprocable simultaneously during each pressure stroke applied by a single trigger lever for separately and simultaneously pumping the disparate fluids along separate discharge paths.

Abstract: The invention provides a dispensing module for dispensing multi-part adhesive from a multi-component cartridge utilizing a standard caulking gun. The dispensing module comprises a piston actuator and a module housing which when assembled with a standard multi-component cartridge and inserted into a standard caulking gun allows the components from the multi-component cartridge to be dispensed.

Abstract: The invention covers a device for the pneumatic delivery of concrete that is hydromechanically transported in an enclosed stream (2) with a concrete pump (1) for the hydromechanical transport, and a solidification accelerator dosing device.

Abstract: A low cost, manually operated, postmix juice dispenser including a water tank manually filled with water and ice, a removable concentrate container, and a water pump and a concentrate pump connected to a manually operated pump handle.

Abstract: This invention relates to a mixing syringe capable of storage of a plurality of compounds that provides for selectively mixing the components, the mixing portion having a first position for separating the components within the storage area, a second position for substantially mixing the components held in the storage area, and a third position providing for complete extrusion of the mixed copmpounds through an applicator tip onto the working surface.

Abstract: A frozen dessert dispensing apparatus is comprised of a housing that receives at least one collapsible container for a frozen dessert wherein the collapsible container is provided with at least one opening for dispensing frozen dessert therefrom. A dispensing valve assembly is in flow communication with the at least one opening. Air pressure is utilized to collapse the collapsible container in response to the operation of the dispensing valve. The housing is provided with a door which is utilized for placing the collapsible containers in the housing as well for removal of the collapsed container from the apparatus. A safety device is provided so that collapsible containers cannot be removed from the apparatus until the air pressure on the collapsible container is vented.

Abstract: A mixer for double dispensing cartridges having two storage cylinders whose volume ratio is different from 1:1 comprises a mixer housing which is attachable to the cartridges, and a mixing helix group which is arranged in the mixer housing. The two dispensing openings of the cartridges communicate with an inlet portion which precedes the mixing helix group and which is divided into a larger inlet chamber for the first component having a greater dispensing volume and a smaller inlet chamber for the second component having a smaller dispensing volume. The inlet portion is constructed to stem the first component and to supply the first component to the inlet chamber of the second component and to carry the latter along. Such a mixer allows an intimate mixing of the components without the need of uselessly dispensing a certain amount of the substance first in order to attain the correct mixing ratio.

Abstract: A fluid dispensing gun is provided which is manually operated by a lever arm and cam mechanism. As an operator draws the lever arm to an open flow position, a pivot plate displaces a cam bar to which is attached a valve stem. This causes movement of the valve stem away from a valve opening and permits fluid flow. A U-shaped stem housing and an open tubular spring housing provide convenient access for axial adjustment of the valve stem and compression adjustment of the valve spring.

Abstract: The dispensing appliance for at least two components comprises a respective pump assembly for each component, each of said pumps being connected to a detachable container holding one of said components, and the pump outlets ending in a common but divorced outlet. Said pump assemblies are held in a frame which can be dismantled and reassembled, and the cylinders of said pump assemblies are composed of different segments.Such an appliance is compact and allows an easy change of metering ratios, simplified manufacture and cleaning.

Abstract: A fluid storage and expulsion system having a rigid tank, the tank having two propellant chambers and two independently operable piston assemblies slidable in their propellant chambers for expelling propellant. In a first embodiment, a coaxial fluid storage expulsion system having inner and outer pistons is provided. Accordingly, the inner piston is provided which is slidable in an inner annular space for expelling fluid therein through a second opening. As well, an outer piston is provided which is slidable in an outer annular space for expelling a second fluid through a first opening. In a further embodiment, the pistons and tanks are positioned in series. As such, the rigid tank is provided with forward and aft propellant chambers as well as forward and aft piston assemblies. A piston guide, which extends the length of the rigid tank is positioned concentrically within the tank.

Abstract: A foam dispensing gun has a body with a depending handle. The body has two passageways divided into forward and rearward portions by an intermediate chamber. A hose connector and duck-bill one-way valve are mounted in the rearward portion of each passageway, and a valve member extends through both the forward and rearward portions of each passageway. The valve member has a conical needle valve mating with a conical valve seat that opens directly to the nose of the body. A trigger lever is pivotally mounted in the chamber and engages the valve members to open and close the valves. A disposable nozzle with a mixing chamber and outlet is attached about the nose of the body by resilient arms engaging with ears extending from the body.

Abstract: The present invention relates to a dispenser for feeding out convenient units of two liquid products. The dispenser (1), preferably, is intended for manual handling and manual feed-out of viscous products, such as mustard (2), ketchup (3), or similar sauces on food products, such as hamburger bread rolls (4) or the like. To bring about an essential reduction of the time required for feeding out convenient units of the two liquid products (2, 3), the dispenser (1) was a first container (5) holding one liquid product (3), a second container (15) positioned within the first container, the second container holding the other liquid product (2), and a pump assembly (18) adapted to simultaneously feed out convenient units of the two liquid products (2, 3) from their respective containers (5, 15).

Abstract: An extremely compact and accurate device for simultaneously dispensing a plurality of liquids in individually pre-set volumes having: (1) substantially identical radially arranged sets having: a positive displacement metering piston pump, a fluid reservoir which houses a tint, a stirrer, and a valve spring; (2) an interconnecting passage connects the sets to respective dispensing nozzles; (3) a drive plate which moves the pistons and the stirrers between two pre-determined vertical positions for pumping and mixing the fluid; (4) a value for controllably diverting individual liquids independently in predetermined amounts from normally returning from the pumps to the reservoirs to move instead from the pump to small circularly arranged discharge nozzles; (5) a mechanism for aligning paint containers for tint dispensing; and (6) a solvent saturation system for reducing evaporation of fluid.

Abstract: Methods and apparatus are set forth for preparing and delivering bone cement from a powdered polymer component and a liquid monomer component by simultaneously injecting the powdered and liquid components, stored in separate component chambers, into an evacuated mixing chamber under the effect of the vacuum; by uniformly mixing the components in the mixing chamber (to thoroughly wet the powder); and by delivering the cement formed by the polymerization process, as needed in an operative setting, utilizing a single ready to use device. The uniform mix is achieved by simultaneously subjecting the contents of the component chambers to the effects of the mixing chamber's vacuum via separate one way nozzles, interconnecting the component chambers to the mixing chamber, which cause the powder to be broadcast and liquid to be sprayed into the mixing chamber.

Abstract: A cartridge for use in an extension tool is arranged to receive one or more foil bags containing a single component or a multi-component mass and is formed of a cylinder (3) defining one or more receiving chambers (13) open at the opposite ends thereof. An axially displaceable piston (5) has opposite end faces (5b, 5c) extending across the cylinder (3) and each end face is symmetrical about its axis. The end faces of the piston can be used alternately for dispensing the mass out of the one or more foil bags.

Abstract: The disclosed universal tool has a front plate with an open ended slot extended from near the front wall center, with the front wall defining the slot having one thickness and the wall spaced from the slot having a greater thickness. The front wall further can be mounted in the tool in two different arrangements, respectively flipped over 180 degrees. This tool thereby accommodates different paired material cartridges, both as to size to give different component ratios and as to constructions, such as from different manufactures. The cartridges further can be shifted along the slot as needed to remain parallel to the plunger rods that drive plungers through the cartridges to cause material discharge therefrom. The stable front wall-cartridge cooperation also holds the cartridge and easily allows rearward plunger withdrawl from the emptied cartridge.

Abstract: A variable proportion dispenser (2c) includes a housing (12c) which houses two pharmaceutical cartridges (6b). A reciprocating drive assembly includes drive stems (36c) extending from the pistons (46b) of each cartridge, a limit guide (76c) removably mounted to the housing, and a sliding body (66e, 300) mounted to the housing through the limit guide. Two one-way drivers (326) and threaded dosage adjusters (60c) are carried by the sliding body. Each one-way driver drives the drive stem into the cartridge through a drive surface to provide a range of dose selections. The user can thus control the amount and proportion of each pharmaceutical dispensed during each delivery stroke for each dispensing cycle. The housing is separable from the remainder of the dispenser, preferably using a cartridge release assembly (302), to allow spent cartridge to be replaced.

Abstract: A static mixer for attachment to a cartridge having at least two chambers containing different materials. The static mixer includes an outer sleeve rotatably connected with a center plug. The center plug being positioned inside a collar of the outer sleeve and providing a flow path through the collar to a mixer tube containing a mixer element. The center plug includes hollow male prongs at its connecting end for engagement Within outlets in the cartridge leading to the chambers. The outer sleeve having tabs on the outside of the collar for engagement with locking arms on a discharge end of the cartridge when the hollow male prongs on the center plug are placed within the outlets of the cartridge and the outer sleeve is rotated. Prior to use, a closure cap is positioned above the outlets in the cartridge.

Abstract: A self-contained dispensing mechanism includes a main body joined to a reservoir, cylinder and piston structure on the main body and a stop assembly for securing containers on said main body. A pump is provided in the main body for pumping liquid from the reservoir to the cylinder to actuate the piston therein. A piston rod, secured to the piston and movable therewith actuates push rods with push ends for dispensing viscous material from the containers. The push ends are adjustably secured on the push rods for accommodating different sizes of containers.

Abstract: Distributor for fluid products, comprising a flexible bag (1) filled with the product to be distributed and connected in a sealed manner to a pump (3) sealed from the air. A body (5) encloses the bag (1) and the pump (3). An actuating button (9) for the pump provided with an outlet for the product to be distributed. A movable member (10) is interposed between the downstream end (3') of the pump (3) and the outlet in the button (9) for the product, this movable member (10) having a first conduit (13) which in a first position of the movable member (10) places the upstream end (3') of the pump (3) directly in communication with the outlet of the button (9), and at least one second conduit comprising a direct circuit and a branch (22, 24, 25).

Abstract: A dispenser for dispensing two components is disclosed which comprises a drum 10 in which a tube 20 is supported. A first piston 12 is arranged within the drum 10 and has an opening 22 through which the tube 20 extends. The opening is provided with a plug 80 which has an aperture also through which the tube 20 extends. The plug supports a blade 32 which bears on a second piston 40 arranged within the tube 22. The plug 80 is fixed relative to the piston 12 so that it and the blade 32 move with the piston 12. During movement of the piston 12 the blade 32 slices the tube 20 and bears against the second piston 40 so that the first piston 12 and the second piston 40 move in a fixed manner as a single unit. During movement of the pistons 12 and 40 the two components are dispensed from the drum 10 and the tube 22 in a particular ratio depended upon the volume displaced by movement of the pistons 12 and 40. The dispensed components can therefore be mixed together in the predetermined ratios.

Abstract: A dispenser for flowable materials such as liquids includes a pair of stationary plates, with a movable plate therebetween. Pumps are mounted between the movable plate and at least one of the stationary plates. A drive system moves the middle plate toward and away from the stationary plates to provide a pumping action. The pumps are mounted to a stationary plate with an adapter, which extends through the plate. A valve assembly is mounted on the reverse side of the stationary plate in registry with the pumps.