Abstract: The invention relates to a diaphragm pump for dispensing or metering purposes, for example for use in liquid soap dispensers. The pressure chamber (7) of the pump is defined by a fixed wall (6) and the diaphragm (1). A check-valve on the inlet side towards a storage vessel (11) forms a cylindrical flange (4) movable in a groove (5) and sealing against the outer surface thereof. Arranged in a spout (2) passing through the diaphragm is an oblique wall (3), which is slotted through a short distance around its periphery, thereby to form a seal against the suction of air into the pressure chamber (7). The diaphragm (1) is arranged to be compressed by a pressure body (9) provided on a lever (8).

Abstract: A device for metering liquids with an electromagnet having a recess extending in the axial direction and adapted to receive a metering hose with an outlet valve, the electromagnet being provided with an armature perpendicular to the axis, and a first lever, upon an axial movement of the armature when the electromagnet is energized, closing the metering hose arranged in the recess completely at a first location, and a second lever, upon a further axial movement of the armature, exerting on the metering hose a pressure deforming substantially in the radial direction at a second location between the first location and the outlet valve.

Abstract: A head depression type dispenser comprises a cylinder formed of an elastic material such as rubber. The cylinder is arranged between a head and a cap, and is constructed to operate as a piston for sucking and pressurizing liquid by axial deformation of the cylinder upon movement of the head. When the depressing force applied to its head is removed after the cylinder is deformed, the cylinder will return to the original shape by its own elasticity. In addition, a sealing piece extends from the cylinder into the passage of the head, thereby closely contacting the inner wall of the passage to form a secondary valve. The sealing piece becomes isolated from the inner wall of the passage when the hydraulic pressure in the cylinder exceeds the elasticity of the sealing piece, allowing the flow of the compressed liquid through the passage, and closely contacts the inner wall of the passage by the elasticity of the sealing piece when the hydraulic pressure becomes lower than the elasticity of the sealing piece.

Abstract: A toothpaste dispenser is constructed in the form of a wall unit simulating a toothbrush with an elongate upper compartment for receiving an inverted toothpaste tube and constituting the toothbrush handle portion, and a lower compartment constituting the bristle portion of the toothbrush and containing a dispenser mechanism. The dispenser mechanism comprises a resilient dispensing duct which receives toothpaste from the inverted tube, and a lever-operated plunger for pumping paste through the tube and discharging same through an outlet nozzle. A metered quantity of paste is dispensed with each forward stroke of the lever.

Abstract: A dispenser for liquid soap having an external envelope consisting of a first body forming a removable housing seating for a container of liquid soap equipped with a dispensing nozzle, and of a second body movable with respect to said first body. The second body acts on the dispensing nozzle so that it dispenses measured amounts of liquid soap.

Abstract: An apparatus and package for liquid or granular materials includes two pivotally mounted dispensing blocks associated with a dispensing arm, whereby upon application of an actuating force to the dispensing arm, a resilient tube of the package is pinched shut by one dispensing block and the other dispensing block opens a slit diaphragm valve disposed within the resilient tube.

Abstract: A metering and/or feeding unit for fluid materials, particularly dry particulate materials and semifluid materials, is disclosed. An elastic-walled tube having an open feed end and an open discharge end is vertically oriented. A power-driven assembly, including tube rollers, are adapted to constrict the elastic tube, beginning at its upper end and progressively moving down the length of the tube. The material being metered or fed is introduced into the elastic tube at its upper end and is progressively moved down the length of the tube as the tube roller of the power-driven assembly moves down the length of the tube. A valve is provided to prevent entry of material into the feed end of the tube at periodic intervals and in coordination with constriction of the tube so that when a tube roller initially engages the tube near the feed end of the tube, that portion of the tube is substantially free of material.

Abstract: A novel improved pinch valve for controlling the flow of fluids in an unrestricted manner in, at least, two flexible tubes, including a housing for holding a solenoid coil between its outer wall and inner cylindrical core member. The solenoid armature is a truncated cone shape which coacts with a similarly shaped opening at the end of the inner cylindrical core member to optimize the flux path of the solenoid and thus its efficiency. A tube retention member includes openings for holding the flexible tubes. A further opening in the tube retention member holds a plunger member which is captured by a retaining pin. The plunger member is secured to the solenoid armature prior to assembly of the tube retention member to the solenoid housing. The plunger member moves with the armature as the solenoid is energized and deenergized. When the solenoid is unenergized, one of the flexible tubes is compressed between a knife like edge on the plunger member and a body portion of other tube retention member.

Abstract: An anti-drip system for a dispenser in the form of a deformable conduit adapted to dispense a liquid, such as a photoresist, from a dispensing tip located at one end of the conduit includes a rigid housing which surrounds an intermediate portion of the conduit. The housing is closed except for a port which permits pressurized air to be supplied to and exhausted from the housing. At the commencement of a dispensing operation, the liquid is transported through the conduit as the housing is simultaneously pressurized, thereby crimping the intermediate portion of the conduit. At the conclusion of the dispensing operation, air pressure in the housing is simultaneously reduced, thereby allowing the conduit to expand and assume its natural substantially uncrimped shape. Expansion of the conduit creates a vacuum sufficient to suck back liquid which is being dispensed from the conduit.

Abstract: A peristaltic pump in which fluid is displaced towards the outlet of the pump by a rotating member which engages a section of tubing. The tubing comprises an outer tubing and an inner tubing with an annular airspace maintained therebetween and vented to atmosphere. When a positive hydrostatic head is maintained above the pump head level, the inner tubing will expand and fill. When the fluid level drops below the pump head level, the inner tube collapses, closing off the tube so there is no fluid volume to displace and the pump output stops to prevent entrainment of air into the patient's circulation. An occluding valve having a normlly closed position may also be provided at the inlet to the pumping section.

Abstract: A main housing assembly has a back plate and a front casing which is hingedly secured to the back plate. A bracket on the backplate supports a liquid reservoir which includes a flexible bag carried by a fiber board box, the bag having a discharge tube clamped at one corner of the bag. A discharge nozzle assembly is connected by one end to the discharge tube, the discharge nozzle assembly having a pair of ball check valves carried by the ends of a flexible tube. The lower ball check valve protrudes from the bottom of the housing when the liquid reservoir is mounted on the bracket and the nozzle assembly protrudes downwardly therefrom in front of the bracket. A depressible plunger carried by the casing is adapted to squeeze the flexible tube of the nozzle assembly so as to close the upper ball check valve and open the lower ball check valve permitting a metered amount of liquid to be discharged through the lower ball check valve.

Abstract: A dispensing system is disclosed which finds particular application as a sanitary food dispensing system, and which includes a support stand adapted to releasably support at least one portable modular dispenser housing in which is mounted a flexible fluid impervious container having a flowable food product contained in sealed relation therein and to which a compressible flow tube is affixed having a discharge fitment thereon facilitating removal of product from the container. A rotor is mounted within the dispenser housing for cooperation with the compressible flow tube to enable controlled portion dispensing of product from the discharge fitment through actuation of an external operating handle.

Abstract: Disclosed is a powder container for a flame spraying torch having an outlet normally closed by an elastomeric plug provided with inner and outer closely spaced diaphragms. The outer diaphragm has an aperture sized for a wiping fit with a powder dispensing tube as the latter approaches and opens a normally closed slit crosswise of the inner diaphragm thereby safeguarding against the loss of powder during both insertion and withdrawal of a powder dispensing tube through the two diaphragms. The powder dispensing tube has an inlet end upstanding axially within a well sized for telescopic assembly about the dispensing end of the powder container.

Abstract: This invention relates to a manual liquid dispensing device for spraying liquid by squeezing the trigger thereof. An adapter is inserted into a cylinder bore forming a pressurizing chamber. A piston is slidably mounted within the adapter. This adapter has an inlet communicating with the intake portion and an outlet communicating with an outlet passage to a nozzle hole formed at the bottom end thereof. A valve advantageously formed is attached to the end of the adapter to open only the inlet at pressure reducing time of the pressurizing chamber and to open only the outlet at pressurizing time. This valve is made of elastic material as a single unit.

Abstract: An easily operable liquid dispenser has a tamper-proof lid, a pressuring system that allows the dispenser to be operated either by a foot pump or by hand, and a control system that allows the amount of liquid dispensed by the dispenser to be varied.

Abstract: A precision metering device for very small quantities of fluids, in which a controlled deflection of one or more selected portions of a Bourdon tube are used to give precise metering of fluids in amounts of only a few microliters or less, and in which a single one of the precision metering devices may be used to provide selected variations of the small amounts of dispensed fluid and with different fluids, usually without extra purging procedures.

Abstract: A measuring device for dispensing preferably viscous liquids comprising a container (4) for the liquid with a main space (28) and below the main space, a smaller space (29) which is in communication with the main space through a passage (37) and opens out through another passage (30). The portion which constitutes the smaller space (29) and the two passages (37, 30) is compressible. A member (3) is adapted, under the influence of spring forces, in a first position to compress the second passage (30). The member can be moved, against the action of said spring forces, into a second position in which it compresses the first passage (37) while the second passage (30) is open, so that in a third position, in which the member compresses the smaller space (29) and still the first passage (37), the liquid squirts out through the second passage (30).

Abstract: Pipette means having aspirating and expelling means and a substantially cylindrical tube connected to a pipette tip for fluid flow therebetween; the expelling means being arranged to apply pressure to the outer surface of the cylindrical tube, the diameter and wall thickness of which being chosen so that said tube is compressed elastically and substantially uniformly and circumferentially to reduce the internal volume thereof, tending to expel any liquid from the pipette tip; and the aspirating means being arranged to relieve pressure from the outer surface of said tube, allowing the tube to expand substantially circumferentially and uniformly so that liquid may thereby be drawn into the pipette tip.

Abstract: A flexible tube and closure includes a hollow body which terminates forwardly in a closable nozzle and rearwardly in a sealed area to retain a paste-like material therewithin. An expeller is movable from the rear sealed closure towards the front opening to rearwardly squeeze the body to force the material toward the front opening. A flattened section extends rearwardly from the closure and connects to the expeller in a loop configuration to aid in grasping and functioning the device. Longitudinally extending strips including corrugations may be provided exteriorly of the body to facilitate operation of the expeller.

Abstract: Apparatus for very accurately dispensing a preselected amount of liquid in a drop-by-drop fashion. The liquid is peristaltically pumped intermittently from a reservoir to a discharge pipe by the successive squeezing and releasing of an elastic tube carrying the liquid and connected to the discharge pipe. The discharge pipe has a discharge port with a face, the face being perpendicular to the longitudinal axis of the discharge pipe. The outer diameter of the discharge pipe at the discharge port is less than or equal to twice the inner diameter of the discharge pipe at the discharge port. The preselected amount of the liquid that is dispensed in a drop-by-drop fashion from the discharge port satisfies the following conditions:(1) V=Q.times.M.times.C(2) 50 mg.gtoreq.Q(3) 0.5 seconds.ltoreq.M(4) 3/seconds.gtoreq.C(5) 1.5.ltoreq.M.times.Cwherein:V is the weight of the produced liquid drop,Q is the feed quantity of said liquid,M is the time interval between successive drops, andC is the cycle of the pump.

Abstract: Apparatus and method of mixing a comminuted food material and a liquid to form a solid food article includes a rotary measuring wheel for dispensing the food material from a storage bin in discrete measured quantities and a rotary peristaltic pump for dispensing the liquid from a storage tank in respective discrete measured quantities. The wheel and pump are coaxially joined for unitary dispensing rotation and a micro-processor controlled arrangement actuates and deactuates a predetermined number of revolutions thereof to effect simultaneous dispensing respectively sequentially of respective predetermined pluralities of the discrete measured quantities of food material and liquid. A chute arrangement receives the dispensed quantities and directs the food material gravitationally downwardly through a central passageway while directing the liquid through apertures arranged to sprayingly emit the liquid convergingly toward the gravitational path of the food material.

Abstract: In a pressure vessel containing fluid or pasty product and equipped with a manually operable discharge valve spring-biased to a closed position, dispensing means for allowing a metered amount of said product to reach said discharge valve on operation thereof comprise a housing defining a metering chamber which is closed by a flexible diaphragm and can communicate with the discharge valve by way of a connecting passage. Further valve means disposed between the vessel interior and the metering chamber are adapted to be closed when the discharge valve is opened to expel the metering chamber contents and to be opened for replenishing the metering chamber when the discharge valve is closed.

Abstract: A mechanical device is described consisting essentially of an upper body and a flexible bell shaped member, immersed in liquid and equipped with disc valve, placed in a housing on the lower part of the bell shaped member, that is fitted in a rigid reinforcing ring. This bell shaped member compressed by the activating flange of the transferring pipe, whenever the actuating button is pressed, makes the liquid flow out through the pipe up to the pouring spout. When turning the outer cover of the upper body, the system is locked, sealing the pouring spout and may be unlocked when ready to use.

Abstract: Injector apparatus is disclosed which includes a sealed self-contained replaceable vessel containing an ejectable material to be injected into the well-bore during well logging operations. The vessel comprises a flexible-wall, collapsible tubular-like cartridge which can be removed from the mounting apparatus in the string of logging tools and replaced with a new cartridge. Motive force apparatus pressurizes the material in the cartridge and a valve device, which is actuated by a solenoid device, controls the flow of material exiting from the cartridge. Passageways and an orifice in the mounting apparatus directs the flow of material from the valve device to the well-bore.

Abstract: A method for very accurately dispensing a preselected amount of liquid in a drop-by-drop fashion. The liquid is peristaltically pumped intermittently from a reservoir to a discharge pipe by the successive squeezing and releasing of an elastic tube carrying the liquid and connected to the discharge pipe. The discharge pipe has a discharge port with a face, the face being perpendicular to the longitudinal axis of the discharge pipe. The outer diameter of the discharge pipe at the discharge port is less than or equal to twice the inner diameter of the discharge pipe at the discharge port. The preselected amount of the liquid that is dispensed in a drop-by-drop fashion from the discharge port satisfies the following conditions:(1) V=Q.times.M.times.C(2) 50 mg.gtoreq.Q(3) 0.5 seconds.ltoreq.M(4) 3/seconds.gtoreq.C(5) 1.5.ltoreq.M.times.Cwherein:V is the weight of the produced liquid drop,Q is the feed quantity of said liquid,M is the time interval between successive drops, andC is the cycle of the pump.

Abstract: An improved apparatus for dispensing flowable material having a pinch valve, an operating lever, a support plate, and a resilient tube located between the lever and the support plate. Movement of an end portion of the lever operates the pinch valve which serves to sequentially isolate a measured quantity of flowable material delivered from a supply and release such measured quantity of material for discharge from the apparatus.

Abstract: An apparatus and package for liquid or granular materials includes two pivotally mounted dispensing blocks associated with a dispensing arm, whereby upon application of an actuating force to the dispensing arm, a resilient tube of the package is pinched shut by one dispensing block and the other dispensing block opens a slit diaphragm valve disposed within the resilient tube.

Abstract: A container from which liquid is dispensed has a metering chamber arranged t its mouth. A metering device is arranged to cooperate with the outside of this metering chamber to control the amount of liquid allowed to flow out. The flow can be controlled either by determining the time for which the metering device opens the metering chamber, or by constructing the metering chamber as a pump chamber of a specified volume so that the metering device pumps the liquid out of the chamber and therefore dispenses a predetermined volume. In the second method, the metering chamber includes an axially compressible bellows portion which forms a pump chamber. Non-return valves are provided at both ends of the pump chamber, and the metering device comprises plates on either side of the bellows section which can be drawn towards one another to squeeze the bellows section.

Abstract: Pipette means having aspirating and expelling means and a substantially cylindrical tube connected to a pipette tip for fluid flow therebetween; the expelling means being arranged to apply pressure to the outer surface of the cylindrical tube, the diameter and wall thickness of which being chosen so that said tube is compressed elastically and substantially uniformly and circumferentially to reduce the internal volume thereof, tending to expel any liquid from the pipette tip; and the aspirating means being arranged to relieve pressure from the outer surface of said tube, allowing the tube to expand substantially circumferentially and uniformly so that liquid may thereby be drawn into the pipette tip.

Abstract: The invention relates to a device for the preparation and injection of sealing cement for bolts in propping gallery roofs and walls in mines, quarries or tunnels. The device of the invention comprises a flexible pouch contained in a rigid housing which is connected to a liquid supply system and an injection nozzle that is double-walled along its entire length, the inner nozzle receiving pulverulent cement from the flexible pouch and the outer ring of the nozzle being supplied with water. Thus, the cement and water are separately introduced into a bore for the bolts and the mixing process takes place in the bore.

Abstract: A dispenser for use particularly with high viscosity or thixotropic materials and especially those containing grit is disclosed and comprises a two-piece housing adapted to be received on a supporting surface and to receive a replacable supply container for the material. The housing has an internal track at least partially disposed in a curved condition and intended to receive and support a flexible tube which interconnects the supply container and a dispensing nozzle which is carried by the housing. One of the housing components also carries a roller crank having a pair of diametrically opposed rollers which can be selectively moved into and out of occlusive contact with the tubing to force a measured amount of the material through the flexible tube and out the nozzle. A handle is disposed externally of the housing for connection with the roller crank for actuation thereof.

Abstract: A dispenser is provided that includes a hollow housing in which is mounted a disposable container that holds materials such as fluidic material to be dispensed. There is provided a service unit which consists of a package or bag holding the fluidic material and wherein the bag has an accordion type construction. The service unit includes a pump tube which is molded as part of the container, and a check valve forms part of the service unit, with the check valve being mounted on an end of the pump tube. An operating lever or mechanism is provided for selectively dispensing metered quantities of material from the accordion package.

Abstract: A dispensing pump is characterized by an elastomer bulb configured as a cup and having a tubular neck portion extending from its base. The cup portion is inverted in a pump housing with the neck extending upwardly from the center of the cup base into a stem member where it concentrically and resiliently engages a nipple. The rim of the cup portion is positioned to overlie a dip tube inlet into the housing. In its quiescent position the bulb is slightly longitudinally compressed by forcing the stem, neck and center of the cup portion into the bulb chamber, thereby forming a convolution at the periphery of the cup base. The convolution provides a positive seal of a vent passage which is open only during pump actuation. Actuation is effected by pushing the stem further into the cup, which action is aided by a spring snapping effect in the bulb, thereby forcing fluid from the pump chamber up through the neck and around the nipple.

Abstract: An osmotically driven fluid dispenser is disclosed comprising a flexible container having a port for filling and emptying same, a layer of an osmotically effective solute on the container, and a shape retaining microporous housing having a fluid rate controlling material in its micropores. The dispenser can be used for delivering fluids and solid agents, and as a displacement pump.

Abstract: Apparatus for dispensing a liquid beverage concentrate comprises a concente reservoir, a resilient dispensing tube having one end in communication with the reservoir via a non-return valve opening into the tube and having an opposite dispensing end provided with a non-return valve opening outwardly, and a pressure fluid device for squeezing a portion of the dispensing tube so as to force a quantity of concentrate through the dispensing end of the tube, the pressure fluid device including a deformable sleeve loosely fitting over the tube and separating the tube from the pressure fluid.

Abstract: A dispensing enclosure 12 for holding a liquid container 14 in an inverted position is disclosed. In the inverted position, the dispensing opening 22 of the liquid container 14 is disposed downwardly. The enclosure 12 is formed as a two part housing having a first portion 26 and a second portion 86. A plug 70 selectively closes the dispensing opening 22.

Abstract: A manually operated dispensing device for a container holding a quantity of liquid is disclosed. The device has an internal chamber and a flexible, elastomeric diaphragm-like cover on at least one side of the chamber in a component retaining body. Associated inlet and outlet valves, which valves may be discrete or integral with the diaphragm and body, and conduits are included whereby liquid from a supply thereof in the container is drawn up into the chamber when the diaphragm is flexed under stress. The diaphragm is operatively associated with a trigger device, the actuation of which flexes and stresses the diaphragm in a direction to decrease the chamber volume. Liquid which is present in the chamber is displaced and pressurized in a pumping action, forcing the outlet or discharge valve to open and the inlet valve to close allowing the liquid to flow into the outlet or discharge conduit and be dispensed from the device.

Abstract: The foam dispensing apparatus is mountable on a self-propelled or manually propelled vehicle such as a planting, fertilizing and spraying machine or like surface working vehicles. A peristaltic or squeeze type pump has an inlet section for receiving air and a foam agent solution which are mixed and successively moved through the pump for discharge in a foam form from the pump outlet section. A discharge nozzle connected to the outlet section is arranged to apply the foam material on the ground surface at a position adjacent to one side of the vehicle. The pump is driven at a rate in response to the ground speed of the vehicle over the ground surface and the air and foam agent solution mixture may be proportionally varied to maintain visual observance of the foam on the ground surface for varying time periods.

Abstract: A material dispenser for dispensing a flowable material from a non-pressurized reservoir having a bore therethrough. A resilient pinch-off tube is removably fitted within the bore. The flowable material reservoir is connected to one end of the tube. At least one dispensing nozzle or needle is coupled to the other end of the tube. Within the dispenser is a mechanism for selectively squeezing the tube to force selected amounts of the flowable material out the needle, and then to draw material from the reservoir into the tube to fill the tube and/or any residual amount of the material in the needle back away from the distal end of the needle thereby to eliminate dripping.

Abstract: A method of dispensing fluid or semi-fluid liquids or pastes in which the liquid or paste is contained in a container having a top flexible dome and a bottom dome connected at their open ends to each other. The method comprises pressing the top dome downwardly toward the bottom dome and forcing the top dome into the bottom dome and discharging the liquid or paste from the bottom dome under the action of the forcing of the top dome into the bottom dome. The top dome can be formed with an internal annular bead which is displaced along the inner walls of the bottom dome to scrape off material stuck to the inside walls of the bottom dome.

Abstract: A dispensing device for use in dispensing measured quantities of fluent materials through a plurality of resiliently compressible dispensing tubes, the device comprising a housing having a tube zone for receiving a plurality of dispensing tubes; collapsing device for collapsing, in compression zones, dispensing tubes when located in the tube zone; displacement device for displacing the collapsing device to advance the compression zones along compression paths to dispense fluent materials through such dispensing tubes; and adjustment device for adjusting the effective length of at least one of the compression paths effected by the collapsing device during displacement thereof. A dispensing kit comprising a dispensing device as described, and a plurality of resiliently compressible dispensing tubes for location in the tube zone.

Abstract: A dispensing device for use in dispensing measured quantities of fluent material through a resiliently compressible dispensing tube, the device comprising a housing having a tube zone for receiving a dispensing tube, collapsing apparatus adapted to be rotatably driven by drive apparatus relatively to a tube located in the tube zone to collapse the tube in a compression zone and to advance the compression zone along a compression arc to dispense fluent material through the tube, and adjustment apparatus for adjusting the effective length of the compression arc, the adjustment apparatus comprising an adjustable cam member to co-operate with the collapsing apparatus and control the effective length of a compression arc during a revolution of the collapsing apparatus.

Abstract: A dispensing device for use in dispensing measured quantities of fluent materials through a plurality of resiliently compressible dispensing tubes, the device comprising a housing having a tube zone for receiving a plurality of dispensing tubes; collapsing device for collapsing, in compression zones, dispensing tubes when located in the tube zone; and displacement device for diplacing the collapsing device to advance the compression zones along compression paths to dispense fluent materials through such dispensing tubes, the compression paths being of differing effective lengths. A dispensing kit comprising a dispensing device as described, and a plurality of resiliently compressible dispensing tubes for location in the tube zone.

Abstract: A method and apparatus for dispensing beverages from large and unwieldy replaceable containers, in which the beverage is delivered to the dispensing site. To avoid the need to raise the container to a height permitting gravity feed, and to simplify or eliminate the cleaning of the dispensing apparatus, a hose or tube is connected at one end to the outlet of the container which is located below the level of the dispensing counter, and provides a dispensing outlet at its other end. Pumping is performed by a pump having a rotary element engaging the exterior of the hose.

Abstract: A dispensing device for use in dispensing measured quantities of fluent material through a resiliently compressible dispensing tube, the device comprising a housing having a cartridge zone for receiving a cartridge having a dispensing tube associated therewith, collapsing structure adapted to be rotatably driven for collapsing a tube located in the cartridge zone in a compression zone, and drive structure for rotatably driving the collapsing structure to displace the compression zone along a compression arc to dispense fluent material through the tube. A dispensing kit comprising a dispensing device as described, a cartridge receivable in the cartridge zone, and a resiliently compressible dispensing tube associated with the cartridge, with the tube having its trailing end connected to a collapsible fluent material container, and having its leading end connected to a dispensing member.

Abstract: A manual dispenser for a pasty product having a reservoir for the product and in which the product is maintained under pressure, an intermediate chamber connected to the reservoir and a discharge nozzle, and an assembly for causing the intermediate chamber to connect alternatively with the reservoir, for filling the chamber, and the discharge nozzle, for discharging a predetermined quantity of product from the nozzle is described.

Abstract: A device for use in a powder entraining squeeze container employs a first vertical hollow circular conduit having a first diameter, open at top and bottom ends and constituting a dip tube. A hollow spherical chamber having a second and much larger diameter and constituting an air powder mixing chamber is disposed above the dip tube, the top end of the dip tube being connected to the bottom of the chamber. A second vertical hollow conduit having a third diameter smaller than the first diameter is secured at its open bottom end to the top of the chamber and is used to discharge the mixture from its top open end. A third vertical hollow conduit in the chamber wall is open at top and bottom ends and is disposed alongside of a portion of the first conduit. The diameter of the third conduit is substantially equal to the third diameter. The open top of a vertical hollow cup closed at its bottom is spaced below the chamber.

Abstract: A manually operated dispensing device for a container holding a quantity of liquid is disclosed. The device has a variable volume pump chamber within a component retaining body. The chamber is defined by a bellows having a closed end or bottom, an open end or top, and corrugated sidewalls characterized by their resilience or elastic memory, and fabricated of any of the various thermoplastics. The bellows is associated with a movable member in the form of a trigger which when actuated compressively stresses the bellows in a direction significantly to reduce its length and the volume of the chamber therewithin. When the compression stress applied by the actuating member or trigger is relieved or removed, the bellows regains its original size and shape and returns the actuating member to its initial position.

Abstract: The dispensing device for liquid soap includes a rigid housing adapted for accommodating a container having a downwardly directed discharge tubing of resilient material and a rear wall portion of the container is shaped into the form of frustoconical outwardly projecting bellows. A lever mechanism including an upright compressing lever, a horizontal sliding lever and a downwardly projecting trip lever is arranged in the housing for movement between a closing position in which the sliding lever clamps the discharge tubing, and a discharging position in which the compressing arm exerts pressure against the bellows and the sliding arm is spaced apart from the tubing to allow the discharging of the contents of the container.

Abstract: A dispenser is provided that includes a housing that embodies a base portion and a hingedly mounted cover. A service unit comprising a collapsible bag or package for holding the material to be dispensed is positioned within the housing or cabinet, and an operating lever or handle is provided for actuating and dispensing predetermined, controlled amounts of material from the package.