Abstract: The metering assembly for metering and dispensing non-solid material includes a metering cylinder, an air cylinder, and an air actuator. The metering cylinder has a metering body with a bore and an inlet/outlet port which is in communication with the bore. The metering cylinder includes a displacement rod which has a first end positioned in the bore and an opposed second end. The displacement rod has a first position where the first end of the rod is adjacent to the bottom of the bore and a second position where the first end is spaced from the bottom of the bore. The displacement rod moves between the first and second positions with movement from the first position toward the second position defined as movement in a filling direction and movement from the second position toward the first position defined as movement in a dispensing direction. The metering cylinder also includes a seal for sealing the rod to the bore.

Abstract: This invention relates to an improved liquid soap dispenser of the type ones which are commonly located in public washrooms and the like. These kind of soap dispensers include a frame, a manually operable pump mounted on the frame and a reservoir operatively connected to the pump for supplying soap to be dispensed. The soap is generally dispensed when a tube, connected to the reservoir, is squeezed. The current invention provides simple and efficient ways for controlling the quantity of soap dispensed from such liquid soap dispenser. As such, the amount of pressure provided to the tube is varied, thereby varying the amount of soap dispensed. Preferably, the pump includes a handle and a wall portion facing each other on opposite sides of the tube. The wall member is pivotable about a pivot point, so that by increasing the angle between the wall member and the tube, the handle does not compress the tube as much and thus less soap is dispensed.

Abstract: A dispensing device is provided for introducing a fluorescent leak detection dye into an operating system containing a pressurized fluid. An embodiment of the dispensing device of the invention comprises a hollow capsule for containing dye having an interior wall and a first and a second end, with the first end adapted to engage the operating system. A plunger having a geometry corresponding to the capsule's interior wall forms a seal against the wall. A rod, having threads of a pre-selected pitch and at least one channel running longitudinally on the rod, is rotatably and axially moveable within the capsule. An end cap is adapted to receive the second end of the capsule with the rod positioned through the end cap. The dispensing device has means located in the end cap to provide controlled engagement of the rod, interposed with the threads of the rod. An indicator adapted to engage the channel of the rod is located in the end cap.

Abstract: A device for metering out a paste-like material includes a connector for connecting the mouth of a flexible container to a positive-displacement pump, means for compressing, over a limited area, a bag filled with the paste so that the paste is acted on at this point by shear forces and at the same time squeezed towards the mouth of the bag. A suction pump is located behind the positive-displacement pump. The devices makes it possible to meter highly viscous pastes from flexible bags simply and without interruption, even when the paste includes trapped air.

Abstract: A liquid dispensing device including a body generally having an air passage and a liquid passage. A valve seat element is connected to the body and a needle is mounted for movement within the body with respect to the valve seat element. First and second connected needle guides receive respective portions of the needle in a manner inhibiting sideward movement thereof. The first needle guide allows flow of liquid through the liquid passage adjacent the first needle guide to the dispensing orifice when the needle is moved away from the valve seat. The first needle guide is connected to the valve seat by way of a press fit and is connected to a second needle guide by way of another press fit. The connected needle guides are likewise press fit into a bore in the body. These connections all aid in maintaining close tolerances and excellent alignment of the needle. A liquid seal is generally disposed between the first and second needle guides and prevents liquid from entering the air passage.

Abstract: A liquid dosage dispenser includes a bottle and a dispenser apparatus supported on the bottle having a housing or sleeve extending into the bottle and a plunger device having a through passageway extending into the housing for longitudinal movement therein. The housing includes an opening through which liquid in the bottle can be drawn into the housing. A helical channel and one or more vertical channels are provided in the housing. The plunger device is rotatable within the housing to permit a follower extending from the plunger device to ride in the helical channel to move the plunger longitudinally in the housing. As the plunger moves upwardly within the housing, a preselected amount of liquid is drawn into the housing. When the follower is positioned in a vertical channel associated with a desired dosage level, the plunger may be forced downwardly to deliver the desired dosage through the passageway and out of the dispenser.

Abstract: An improved extruding mechanism for auto soap dispenser which comprises, a soap dispenser equipped with an under outlet, a sleeve positioned underneath the dispenser, an output port locating at the bottom of the sleeve, and there is a valve seat which is installed inside the sleeve and therein sliding up and down, more particularly the valve seat consists of a disk block which includes several circulated holes and a mandrel, therefrom the mandrel on the top of valve seat is inserted with a spring and moreover the mandrel at the bottom of valve seat is equipped with a diaphragm; and there is a side tube positioned on the flank of sleeve and thereon connected to an extruding hose, and a link that pivoted at external end of the extruding hose is also pivoted by a motor driven eccentric wheel at its opposite end; according to the structure described above, the elastically reciprocating motion on the extruding hose which caused by motor driven eccentric wheel will put the squeeze on valve seat and then have it sli

Abstract: Precompression pump intended to dispense selectively a product contained in a container, said pump comprising a pump chamber (3) having an inlet valve (4), a piston (1) sliding in a first cylinder (2), a differential piston (5) forming an outlet valve of said pump chamber (3) and sliding in a second cylinder (11) between a closing position and an opening position of the pump chamber (3), said pump comprising also a pusher (6) provided with a dispensing orifice (7), said pusher element (6) being movable between a rest position and a pump actuation position, the pump being characterized in that said first and second cylinders (2 and 11) are directly formed by first and second respective internal walls of said pusher (6), the latter delimiting partially said pump chamber (3), the pump being also characterized in that it comprises only one spring (15) bearing on one side on a portion of the pusher (6) and on the other side on a portion of the differential piston (5), said spring (15) acting on the one hand as a r

Abstract: A needleless syringe capable of accelerating particles comprising a therapeutic agent across skin or mucosal tissue of a vertebrate subject is provided. The syringe comprises an elongate tubular nozzle having a bend along its length and is connected to or capable of connection to a suitable energizing means for producing in the nozzle a supersonic condition sufficient to cause delivery of the particles to a target surface. A method for delivering particles comprising a therapeutic agent from the needleless syringe is also provided.

Abstract: The present invention relates to an improved displacement device (1) for controlled dispensing of a dose of a liquid contained in a cartridge (40), the displacement device (1) comprises a housing (5) incorporating: a mechanism (6) for accommodating the cartridge (40), a manually activatable displaceable elongated dose dispensing device (20), the elongated dose dispensing device (20) having a first end part (22) extending to the exterior of the housing (5), an elongated piston rod (30) connected with a displaceable piston (32), the piston (32) being adapted to press out the liquid contained in the cartridge (40), and the piston rod (30) having a plurality of transversely extending teeth (25) arranged along its length, a toothed displacing mechanism (14), and a user-operated dose setting mechanism (8,10,12), the user-operated dose setting mechanism (8,10,12) and the toothed displacing mechanism (14) are operatively connected to cause movement of the toothed displacing mechanism (14) in response to the operation

Abstract: A liquid dispensing device for use in the dispensing of micro-volumes of liquid for gas chromatography has a cylinder with an open end and has a piston slidable therein. The piston has a coaxial rod slidable within itself; and displacement member including a reversible stepper motor and clutch mechanism is provided to effect selectable linear displacement of the piston in the cylinder and/or the rod in the piston in order to vary to volume of the cylinder, the top end of which is in communication with the fluid sample to be injected.

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: A waste liquid collection system for use in continuous arteriovenous or venovenous hemodialysis (CAVH or CVVH) is disclosed. The system comprises a collection vessel and associated interconnection lines which can be preset to given volume of waste liquid to be removed from the dialysis machine in a given period of time. Once the volume is reached, the collection vessel stops waste liquid flow until the vessel is emptied and reset. The system guaranties that excess liquid will not be removed from a patient.

Abstract: A dispensing mechanism for an applicator having a cylinder and a plunger. The plunger has a piston head slidable in liquid-tight manner within the cylinder. The plunger performs an expansion stroke to draw fluid into the cylinder and performs a compression stroke to dispense fluid from the cylinder. The dispensing mechanism includes a stop member attached to the cylinder of the applicator. The stop member has an engagement part extending toward the plunger. The plunger has at least one abutment formed on its surface for contacting the engagement part and limiting the motion of the plunger. Each abutment preferably comprises an end surface of a longitudinal groove formed in the surface. The engagement part tracks within the longitudinal groove and preferably limits the expansion stroke when the engagement part contacts the end surface. Each longitudinal groove is of a different length corresponding to a desired dose volume in the cylinder.

Abstract: A unit measurer for a syringe for use by the visually impaired or others including a plurality of blocks having predetermined lengths representing desired dosages. The blocks have a slot for individual placement on the rod of the syringe to limit movement of the syringe plunger for dispensing a given amount.

Abstract: The invention features an applicator for delivering a defined, adjustable quantity of a viscous liquid, in a short stream. The applicator can be used, for example, to accurately and easily apply oil to ears of sweet corn to prevent infestation by corn earworms.

Abstract: The bottle top dispenser has a piston-cylinder unit, the piston (12) and cylinder (10) of which can be activated in an axial stroke movement relative to one another, in order to draw liquid from a bottle on which the dispenser is set, and dispense it. The maximum axial elongation of the piston (12) and cylinder (10) relative to one another is adjusted with a limiter. The dispenser has a volume display proportional to the limiter setting. The dispenser can be adjusted, by setting it, in a condition where the limiter and the volume display are independent of one another, in order to bring the displayed volume and the volume actually dispensed into agreement.

Abstract: An improved medication delivery pen is provided for injecting fluids such as insulin within body tissue. The medication delivery pen includes a mechanism that prevents the removal of a cartridge unless an injector button on the medication pen is in a predefined position, a bayonet attachment and an improved clutch assembly in a dose setting mechanism that provides improved control over the torque necessary to rotate a units counter ring in the medication delivery pen using a dose setting knob.

Abstract: A liquid dosage dispenser includes a bottle and a dispenser apparatus supported on the bottle having a housing extending into the bottle and a plunger device extending into the housing for longitudinal movement therein. The housing includes an opening through which liquid in the bottle can be drawn into the housing, with one of the housing and plunger device including a stop system of predetermined configuration and the other of the housing and plunger device including a follower for contacting the stop system. The plunger is rotatable with respect to the housing to align the follower with a desired portion of the stop system, with the follower and stop system, when aligned, allowing the plunger to be moved longitudinally along the housing until the follower contacts the stop system to draw a predetermined amount of liquid through the opening into the housing. The dispenser is removable from the bottle to allow the predetermined amount of liquid to be dispensed through the opening.

Abstract: A dispenser having at least two compartments wherein the amount of product dispensed from at least one of the compartments can be adjusted prior to dispensing. Advantageously, products in both compartments are dispensed using the same actuator. Different volumes of product can be dispensed from at least one of the chambers even through the volume of product dispensed from the other chamber need not be varied and even though the same actuator may be used to effect the dispensing of product.

Abstract: There is provided a hot melt applicator including (a) a nozzle opening, (b) a valve seat disposed upstream of the nozzle opening, (c) an empty chamber formed between the nozzle opening and the valve seat, (d) a valve body movable to the valve seat so that the valve seat is open or closed, and (e) a spring for biasing the valve body; and a pneumatically driven cylinder for driving the spring. The valve body is shaped to be a cone having an apex angle facing the nozzle opening, and the valve seat is formed with a tapered surface which is to make a contact with the cone. The tapered surface has an angle greater than the apex angle of the cone, and has a length of at least 1 mm. The hot melt applicator uses a pneumatically driven cylinder for driving the valve body to thereby compress the spring which in turn compresses the valve body, and thus, avoids the great resistance of hot melt with the spring used as a large capacity.

Abstract: A novel motor controlled microvalve dispenser includes a body section through which fluid, e.g., adhesives, epoxies, fluxes solder pastes, for example, is accurately dispensed as a dot or bead or other shape, all of a predetermined dimension. The housing includes a removable and replaceable insert which prevents any of the fluid from contacting any of the interior walls of the housing or of the infeed passage. The insert includes both an infeed passage which extends out of the housing and an outlet passage also extending out of the housing, the insert including a bore into which a feed screw or auger is sealingly positioned for rotation by the motor. Attached to outlet passage is an applicator or tip dispenser such as a removable and replaceable dispensing needle.

Abstract: There is provided a hot melt applicator including (a) a nozzle opening, (b) a valve seat disposed upstream of the nozzle opening, (c) an empty chamber formed between the nozzle opening and the valve seat, (d) a valve body movable to the valve seat so that the valve seat is open or closed, and (e) a spring for biasing the valve body; and a pneumatically driven cylinder for driving the spring. The valve body is shaped to be a cone having an apex angle facing the nozzle opening, and the valve seat is formed with a tapered surface which is to make a contact with the cone. The tapered surface has an angle greater than the apex angle of the cone, and has a length of at least 1 mm. The hot melt applicator uses a pneumatically driven cylinder for driving the valve body to thereby compress the spring which in turn compresses the valve body, and thus, avoids the great resistance of hot melt with the spring used as a large capacity.

Abstract: A chamber that communicates with a viscous material reservoir has a flexible resilient diaphragm which forms an exterior wall thereof. An impact mechanism, which may comprise a solenoid actuated hammer, applies a predetermined momentum to the diaphragm for rapidly metering a predetermined minute blob of the viscous material from the chamber through a nozzle. The reservoir is pressurized with gas to force the viscous material into the chamber to refill the same. The chamber is heated to control the viscosity of the material. Dispensing rates in excess of four blobs per second can be achieved. Variations in the height of the nozzle from the surface of the workpiece are not critical to uniform rapid dispensing. An alternate embodiment eliminates the diaphragm and instead rapidly retracts a nozzle relative to a fluid feed conduit to eject very small blobs of viscous material. A strain gauge detects refill of the chamber inside the nozzle and sends a signal to control refill logic circuitry.

Abstract: A liquid dispenser which includes a housing having a chamber for holding a collapsible tube of liquid, a front opening to the chamber, and a side opening to the chamber. An actuating lever is pivotally connected to the housing and has a protrusion extending into the side chamber through the side opening for engaging and compressing the tube. The tube has a dispensing nozzle which extends through the front opening of the housing. A stop mechanism limits the movement of the actuating lever toward the tube for limiting the compression of the tube and the amount liquid dispensed from the tube. More specifically, the stop mechanism is adjustable and the dispenser is fabricated from a plurality of modules.

Abstract: A dispenser (20), including a plunger (24) and cylinder (26) connected to a dispenser body (28), a flow control valve (54) is rotatably mounted in the dispenser body (28) and has a valve fluid path (92, 106, 108) connected between the cylinder (26) and a control valve outlet (109). Advancing the plunger (24) when the valve (54) is in a first, recirculate position pushes liquid from the cylinder (26), through a return path (112) and back into the bottle (22). Advancing the plunger (24) when the flow control valve (54) is in a second, dispense position delivers liquid from the cylinder (26) out through a dispensing orifice (120).

Abstract: A system for mixing and dispensing oxygen sensitive hair dye consists of concentrates in a sealed air-tight system using preferably 3-8 dye concentrates in collapsible bags having an oxygen barrier. The dye concentrates, along with oxygen activating liquids, are sufficient to produce an infinite number of hair dye formulations, thereby avoiding buying and stocking many bottles of specific color dyes. For formulating the dye mixtures, exact charges, i.e., volumes measured to within 1 ml, are raised from the bags and discharged. Each bag is removably connected, in an air-tight seal, to a separate precision lift pump whose piston lift excursion may be selectively set to determine the volume of the dye charge.

Abstract: A dispenser for use with a container of lotion or paste-like product to be dispensed. The dispenser comprises a body having an inlet port connectable to the container and a dispensing spout with a closure cap. The dispenser has a plunger assembly manually shiftable between an unactuated position and an actuated position and a piston shiftable by the plunger assembly between an unactuated position and an actuated position. Both the plunger assembly and the piston are biased toward their unactuated position. As the plunger assembly and piston are shifted toward their actuated positions, the spout cap is opened and the piston causes product to be dispensed through the spout. When the plunger assembly is released and it and the piston return to their unactuated positions, a suck back vacuum withdraws product back into said spout, a vacuum created by the piston draws product from the container into the dispenser and the spout is closed by the cap.

Abstract: A fluid-operated dispensing device 10 includes a vessel 12 for defining a chamber 14 in which fluid is received. The vessel 12 also defines an inlet 18, a first outlet 24 and a second outlet 26. The inlet 18 has a greater cross sectional area than that of the second outlet 26. A first closure 28 is operatively arranged with respect to the inlet 18. The first closure 28 moves into an open position when pressure at the inlet 18 is greater than pressure within the chamber 14. The first closure 28 moves into a closed position when pressure within the chamber 14 is at least equal to pressure at the inlet 18. A second closure 50 is operatively arranged with respect to the second outlet 26. The second closure 50 moves into an open position when pressure within the chamber 14 is greater than pressure at the inlet 18. The second closure 50 moves into a closed position when pressure at the inlet 18 is at least equal to pressure within the chamber 14.

Abstract: A liquid dosage dispenser includes a bottle and a dispenser apparatus supported on the bottle having a housing extending into the bottle and a plunger device extending into the housing for longitudinal movement therein. The housing includes an opening through which liquid in the bottle can be drawn into the housing, with one of the housing and plunger device including a stop system of predetermined configuration and the other of the housing and plunger device including a follower for contacting the stop system. The plunger is rotatable with respect to the housing to align the follower with a desired portion of the stop system, with the follower and stop system, when aligned, allowing the plunger to be moved longitudinally along the housing until the follower contacts the stop system to draw a predetermined amount of liquid through the opening into the housing. The dispenser is removable from the bottle to allow the predetermined amount of liquid to be dispensed through the opening.

Abstract: A dispenser for dispensing charges of a liquid from a container having a neck and a mouth at the end of the neck operable with the container in an inverted position for dispensing a charge of liquid. The dispenser includes a container holder for being mounted on a wall at one side of the holder constituting the back of the holder having a bottom with an opening therein for holding a container in an inverted position with its neck extending down through the opening. The dispenser further includes a member for being selectively pushed by hand toward the back of the holder or pulled by hand toward the front of the holder for actuating the dispenser. The actuator is selectively engageable with the container and with the holder in a first position for pushing the member toward the back of the holder to actuate the dispenser and in a second position for pulling the member toward the front to actuate the dispenser.

Abstract: A mobile filling unit mounted on a wheeled base and having one or more pumping systems and liquid dispensing heads. Each of the pumping systems has a metering turret containing a number of adjustable rods, the rods being adjustable to limit the stroke of a reciprocable drive motor, the drive motor being directly connected to a reciprocable pump, so that the volume delivered by the pump is controllable to any of a number of predetermined values equal to the respective settings of the adjustable rods in the metering turret.

Abstract: A dispenser gun for selectively dispensing controlled quantities of viscous or semi-viscous materials, and in particular liquid pesticides or insecticides, employs a vacuum driven operating system for discharging and reloading the viscous or semi-viscous materials to be discharged. The dispenser gun is designed to create pressure differentials in adjoining chambers which, in conjunction with a cooperating valve system, enables the discharge of precisely metered quantities of material and prevents continued and undesired discharge or dripping from a discharge nozzle after a preselected quantity of material has been discharged from the dispenser gun. The handle of the device includes structure for pre-selecting one or more predetermined quantities of material to be discharged from the dispenser in repeatable sequences. The dispenser gun also includes structure for removably receiving a replaceable reservoir of viscous or semi-viscous material to be discharged from the gun.

Abstract: A piston pipette having pulling equipment for moving a piston upward and pushing equipment for moving the piston downward. The pushing equipment has a movable gripping device (5), which when moving downward is attached to the piston and transfers the piston downward, and a movable transfer device (4) extending below the gripping device. According to the structure a pipette is obtained which is gripped a pen-shape handle and with which liquid can be dosed to a desired place as exactly as possible.

Abstract: A refrigerant metering charge board that accurately meters a refrigerant and an associated synthetic compressor oil into a product, preferably a refrigerator, is provided. Metering is accomplished by way of servo motors coupled to ball screws which are in turn connected to hydraulic cylinders. Calibration of the refrigerant, preferably R134a, is maintained using a temperature sensor, a programmable logic controller (PLC) and a density/temperature equation that has been empirically fit to saturation data. The preferred equation is a modified Benedict-Webb-Ruben (MBWR) equation of state. The refrigerant charge amounts are entered into the PLC using either a fixed bar code scanner or a hand-held bar code scanner that reads a bar code on the refrigerator. An operator interface, preferably a touch-screen display is also provided.

Abstract: The present invention relates to a nozzle assembly for dosing liquid while preventing spillage or dripping between the dosing. This nozzle assembly includes a dosing chamber (4) has an inlet (21), a piston housing wherein a piston plunger (5) is disposed, and an outlet (22) communicating with a distribution channel (10), a first one-way valve to open the inlet (21) when the dosing chamber (4) is being filled and to close the inlet (21) when a dose is being emptied out from the dosing chamber (4) into the distribution channel. The nozzle assembly furthermore comprises a second one-way valve (3) and a pressure release valve (23) to open a distribution channel outlet (27) when pressurized to a desired pressure. This pressure release valve (23) has an elastic cover (19) tightly fitted around the distribution channel outlet (27) and a distribution chamber having one or more needles (13) through which the liquid is dosed.

Abstract: The invention relates to a pipette for dispensing successive volumes of liquid by repeated action on a pusher (22). A drive lever (26) is provided to drive a pushrod (15) and a piston rod (5) downwards only. The lever (26) extends transversely to the longitudinal axis (X) of the thrust rod (15) and it includes a hole (27) through which the pushrod (15) passes with a small amount of clearance. The pusher (22) can act on one end of the lever (26) to cause it to tilt relative to the pushrod (15) and then to drive the pushrod downwards by wedging, together with the piston rod (5), and to expel a predetermined volume of liquid. The lever (26) is mounted to rotate about a tilt axis (Y) that intersects the axis of the hole (27) perpendicularly substantially halfway along the hole.

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 repetitive pipette wherein a rack shaft (23) vertically and movably provided in a pipette body (1) is connected to a plunger (43) of a syringe unit (41), and a vertically movable and pivotable pawl member (16) repetitively moves downward and meshes with the rack shaft (23) to feed the plunger (43) downward by a predetermined feed pitch at each time, thereby effecting repetitive pipetting, and wherein the predetermined feed pitch for the rack shaft (23) can be variably set by a pipetted quantity variably setting device. A vertically movable push button (2) is provided on the pipette body (1). A rotary control knob (3) for variably setting a pipetted quantity is provided in coaxial relation to the push button (2) so as to be vertically movable together with the push button (2) as one unit and rotatable relative to the push button (2). A pawl retaining member (12) for retaining the pawl member (16) is vertically movable together with the push button (2) as one unit.

Abstract: An adjustable tool is disclosed for dispensing a two-part adhesive from a two-chamber cartridge having a mixing nozzle with each chamber having a plunger. Pistons are insertable into the respective chambers. Piston rods and a drive rod move conjointly with the pistons. A lever is pivotable on the frame. A feed nut is mounted loosely on the drive rod so as to be capable of gripping the drive rod when canted for moving the feed nut, the drive rod, the piston rods, and the pistons conjointly to a forward limiting position of the feed nut when the lever is actuated. A spring biases the feed nut backwardly and permits the feed nut to be canted, to grip the drive rod, and to be moved forwardly and conjointly with the drive rod, the piston rods, and the pistons when the lever is pivoted into an actuated position. A set screw threaded adjustably into a threaded hole in the frame defines a backward limiting position of the feed nut.

Abstract: Reproducible volumes of aerated material, e.g. ice confections, are disposed on a continuous basis by compressing a quantity to a predetermined volume and releasing the pressure before dispensing.

Abstract: A medication delivery pen is provided having a medication cartridge holder assembly, a pen body assembly and a cap. The reusable pen body assembly includes an improved loading and priming mechanism that allows the user to easily load a new cartridge and prime the pen without having to manually manipulate the pen's lead screw and related driving components.

Abstract: A proportioning apparatus for viscous materials comprises a proportioning cylinder which has an inlet and an outlet. The proportioning cylinder houses a delivery piston actuable by way of an actuating rod. The latter is drivable by an electric motor, which is connected with the actuating rod by way of a crank drive.

Abstract: A system is provided for securing together a container having an opening and a finger-operable pump. One form of the system includes a mounting flange on the pump and a support structure in the container for receiving the flange in a snap-fit or press-fit engagement. In another form, the pump mounting flange is heat bonded to the container with a liner that includes at least two layers of a heat-weldable plastic around at least one interposed layer of substantially electrically conductive metal which can be heated with induction heating. The container can be threaded, and a threaded collar can be screwed onto the container. The collar can have an abutment surface for facing the pump actuator, and the collar can be screwed up or down on the container to establish a selected distance between the collar abutment surface and the pump actuator so as to define the stroke length of the pump.

Abstract: A delivery system comprising a pump connectable to a source of pumpable material, such as flowable condiment, and a control valve including a valve body and a valve element. The valve body has an inlet coupled to the pump to receive the pumpable material from the pump, a resiliently expandable portion chamber, an inlet passage extending from the inlet to the portion chamber, an outlet and a discharge passage extending from the portion chamber to the outlet. The valve element is movable in the valve body between a charging position in which the valve element blocks the discharge passage and does not block the inlet passage so the pump can supply the pumpable material under pressure to the portion chamber to resiliently expand the portion chamber and a discharge position in which the valve element blocks the inlet passage and does not block the outlet passage so the portion chamber can resiliently contract to move the pumpable material from the portion chamber toward the outlet.

Abstract: A pen shaped syringe for repetitive injection of individually set doses of a medicine from a cylinder ampoule reservoir comprises a dose setting member which may be rotated to cause a rotative movement of a dosing member and a combined rotative and axial movement of an indicator member indicating the set dose, and a piston drive member which when rotated in one direction moves the piston into the cylinder ampoule. A unidirectional coupling is established between the dosing member and the piston drive member by each member carrying a disc having surfaces with sector shaped saw teeth riding over each other when the dosing member is rotated in the dose setting direction and engaging each other when the dosing member is rotated in the opposite direction corresponding to the direction of rotation by which the piston is moved into the cylinder ampoule.

Abstract: A device for dispensing corrosive liquids accurately and without spilling can be held in one hand while the other hand holds a vessel into which liquid is dispensed. The device has a tubular barrel with a thumb stop at a top end and a cap at a bottom end for connection to a liquid container. A hand grip fits over the barrel and is slidable thereon with a connection link to a plunger slidable within a cavity in the barrel. A liquid intake tube extends down from the base of the cavity in the barrel, through the cap, into the liquid container and has a first non-return valve therein, such that sliding movement of the hand grip upwards on the barrel draws liquid through the intake tube into the cavity, and a liquid dispensing tube connected to the cavity, with a second non-return valve therein, such that sliding movement of the hand grip downwards on the barrel dispenses liquid from the cavity through the dispensing tube.

Abstract: An hydraulic cylinder (100) driven by a reciprocating motive force operates in conjunction with two check valves (170) and (200) to pump liquid toner concentrate (150) around a loop from a reservoir bottle (180) and back into the bottle (180). A microprocessor circuit (230) analyzes commands and data bytes representative of the number and color of pixels transmitted from a computer (290) to an electrographic printer (280). When a predetermined pixel count has been reached, a microprocessor circuit (230), acting on positional information obtained from an optical sensor (240) and marks (250) and (260) on a wheel (160), causes a previously calculated volume of concentrate (150) to be added to a toner premix stream or reservoir in printer (280), thus replacing toner particles depleted from toner premix in the printer (280) during printing. The wheel (160) can run continuously to provide a stirring action for the concentrate (150).

Abstract: The invention relates to a repetition pipette including a syringe receiving section for a mounting portion of a syringe, said pipette comprising a receiving member having a piston receiving portion for the mounting portion of a syringe piston, piston returning means for moving said receiving member away from said syringe receiving portion, piston advancing means for advancing said receiving member towards said piston receiving portion in steps corresponding to the liquid volumes to be ejected by the syringe, and step width adjusting means for adjusting the width of the steps of said receiving member by means of an adjustment element, characterized by constant step means for setting the width of the first step to a constant value independent of adjustments of said adjustment element for the widths of following steps.

Abstract: Viscous flowable material dispensing apparatus for dispensing viscous flowable material such as food material. The apparatus is provided with a supply manifold for receiving and distributing the viscous material with air actuated reciprocating pump connected to the manifold to force the material therethrough, facilitated by one way inlet and outlet valves in the manifold. A pattern plate adapted to receive the material from the manifold into a flat chamber with a dispersing pattern plate supported in the chamber to disperse the material throughout the chamber. A pattern plate covering the plate chamber to receive the dispersed material and dispense same in a pattern over object to receive the material. Pneumatic control valves are utilized for operating the pump to continuously provide repeated movement of material through the apparatus.