Abstract: A pumping system is disclosed in which a storage compartment formed by a spring loaded piston and cylinder assembly is provided with a spring which stays at a relatively constant length when pumping product to keep a relatively constant pressure on the product to maintain a steady stream or spray of product emerging from the pumping system. A vent structure is provided by a double seal arrangement which allows the mounting ring and a main cylinder of the pumping system to be made in one piece.

Abstract: A device for dispensing a measured volume of liquid such as hot water for a coffee making machine in which the liquid is delivered to and dispensed from a cylinder having a double-acting piston the stroke of which is limited and controlled by an external microswitch which is remotely operated by the piston without physical contact, e.g., magnetically, at a predetermined point in its stroke.

Abstract: Apparatus for dispensing metered amounts of mercury and silver alloy, for the production of dental amalgam, is disclosed. The apparatus can dispense the silver alloy in either tablet or powder form and is provided with a stirring member in the silver alloy powder supply container to agitate the powder during the metering and dispensing thereof so as to alleviate the problem of clumping. The apparatus also has a member to adjust the amount of mercury being dispensed and an element for locking the adjusting member securely against accidental shifting out of position.

Abstract: A manually charged fluid dispenser includes a charging cylinder disposed in the mouth of a bottle and a manually reciprocable piston carried on a charging rod which extends out each end of the cylinder. The charging rod has a differential diameter for providing hydraulic return thereof by fluid pressure in the charging tube after manual charging of the tube. The charging tube is in fluid communication with a spray nozzle mounted on the bottle and tube through a ball valve which is selectively unseatable by a cam actuated by a slidable trigger, which is hydraulically biased by a piston which is in connection with pressurized fluid at the ball valve. An alternative embodiment of the charging cylinder provides a charging rod slidable in a draw tube disposed above an end of a charging cylinder and a piston slidable therein so that fluid pressure in the cylinder will return the rod to its rest position.

Abstract: The invention employs combination spring and sponge power to dispense fluids and semi-solids from a container. A spring or springs are preferably molded into a compressible foam mass, such as polyurethane, and the combination is then compressed and positioned within a container, along with the material to be dispensed. Expansion provides the dispensing power and additionally serves to fill the void which would otherwise be left in the container as the material is being dispensed. No aerosol type gases are employed. The material to be dispensed may be separated from the spring and sponge by a cup or circular plate. Further, the material to be dispensed, particularly if liquid, may be contained in a plastic bag and the spring and sponge are preferably contained in a plastic bag compressed and sealed and then locked for further venting ot the atmosphere.

Abstract: A spray dispenser is presented which atomizes cosmetics, perfumes, and similar products to a state of fine spray throughout its entire spraying period. The pressure of the fluid product being sprayed is maintained by a spring loaded piston and a related valve which opens a passage to the spray outlet only after a predetermined spray pressure is reached and closes it when the pressure approaches a pressure insufficient to produce the fine spray.

Abstract: A mechanically operated mixing dispenser for mixing and discharging materials under pressure, includes a plurality of accumulating chambers for receiving and accumulating materials to be mixed and dispensed and operable to discharge the materials under pressure over a sustained period of time, and a plurality of expansible chambers connected with sources of the different materials and with the accumulating chambers for transferring the materials from their respective sources to a respective accumulating chamber for storage of the materials under pressure.

Abstract: An economical and easy to operate mechanically operated dispensing device has a rotatable actuator connected with at least one expansible chamber to effect operation of the expansible chamber to draw material to be dispensed from a container into the expansible chamber and to then pressurize the material. An expansible bulb is connected with the expansible chamber and with a dispensing nozzle, and has a volumetric capacity several times as great as the expansible chamber. Valves are associated with the bulb to control flow into and out of the bulb, whereby the rotatable actuator and expansible chamber are operative to repeatedly draw material from the container, pressurize it and transfer it under pressure into the bulb, the bulb expanding as material is added thereto, and the elasticity of the bulb being such as to exert a substantial pressure on the material in the bulb.

Abstract: A non-aerosol pressure dispenser includes a pressurization chamber having a piston reciprocable therein and a manual actuator extends from outside the chamber into operative association with the piston. The actuator is reciprocable in a first direction to move the piston to compress a spring engaged therewith and to draw material into the chamber. The spring urges the piston in a second direction to pressurize the material in the chamber and a discharge valve or nozzle is connected with the chamber to release the pressurized contents thereof over a desired prolonged period of time and at a sufficient pressure to obtain a fine mist of the material.

Abstract: A mixing and distributing device for gasoline and oil comprises an oil inlet, a duct for gasoline under pressure and a delivery duct. A first vertical cylinder having a first piston is fed from the top with oil and gasoline through a slide valve. A second vertical cylinder, which is located inside the first cylinder and under the first piston, has a second oil piston sliding therein. When the valve is in a first position, gasoline under pressure is fed to the first cylinder thereby urging the first piston downward against a biasing spring to move the second piston downward through abutments on the interior of the first piston. This causes a metered supply of oil to be fed to the top of the first cylinder so as to mix with the pressurized gasoline. A second position of the valve terminates the supply of oil and gasoline, and allows the mixture to be expelled by the first cylinder piston under the effect of the biasing spring through the valve and the delivery duct.

Abstract: A dispensing device for discharging material under pressure, includes at least one accumulating chamber for receiving and accumulating material to be dispensed and operable to discharge the material under pressure over a sustained period of time for use as desired, and at least one expansible chamber operable to incrementally move material from a container into the accumulating chamber for storage of the material under pressure, whereby a prolonged, pressurized discharge of the material can be obtained.

Abstract: A device for the roller application of liquid coating compositions such as paint is provided comprising;(a) a hollow body portion having an applicator opening at one end and a container opening at the opposite end; said portion containing;(1) a liquid feed tube extending from said applicator opening through said container opening;(2) a solid support member engaging the outside surface of said tube;(3) a rod reciprocatingly mounted in said solid support member and extending through the wall to the inside of said tube;(4) a flexible disc centrally mounted on said rod within said tube having a diameter substantially the same as the inside diameter of said tube;(b) a hollow handle portion contiguous with said body portion having pivotably mounted therein a trigger, said trigger connected by linking means with said rod for reciprocating said rod within said tube;(c) a container for said liquid coating composition mounted in said body portion at said container opening; said tube extending into said container; and(d

Abstract: An ink supply system for an ink printer having a pressurizable, interchangeable ink cartridge, means for pressuring the ink cartridge upon insertion into the ink cartridge receptacle, and means for establishing fluid communication between the interior of the ink cartridge and the ink supply line to the ink jet printer before pressurization of the ink cartridge occurs. The present ink supply system also includes an improved septum and needle method of establishing fluid communication.

Abstract: A wall mountable bracket has an upwardly opening pocket receiving a replaceable cartridge of toothpaste, the cartridge having a bottom outlet and a valve assembly for it. The cartridge is mounted with the dispensing valve at the lower end and the cartridge has an upper end wall movable downward toward the valve for dispensing the contents. A downwardly opening cup is fittingly received over the outside of the cartridge and inside the bracket pocket, and has a spring loaded plunger engaing the upper wall of the cartridge to urge the contents thereof toward the valve. The valve is a knob-operated, sprng-loaded gate valve. The cartridge-valve assembly is disposable as a unit when the contents of the cartridge have been exhausted.

Abstract: A fluid dispenser is disclosed, most of whose parts along with its wall-mounting bracket are of a resilient plastic such as polystyrene and cooperate in such manner as to permit hand assembly. The dispenser comprises a facade member on which a plurality of separate containers for different fluid substances are mounted, and each container is provided with a simplified dispensing valve and operator, composed of snap-fitted parts, for dispensing a premeasured amount of the fluid. The wall mounting bracket is provided with adjustment plates for corner mounting the dispenser on irregular walls, and a top cover fits over the facade member, containers and wall bracket forming a shelf and sealing the fluid in the containers.

Abstract: A device for feeding fluid at substantially constant pressure from a flexible container compressible by a pressure plate movable toward and away from a stationary plate to form a variable volume chamber for the container. A linkage connects the pressure plate to spaced-apart transverse tensioning plates attached to the ends of a tensioning spring. The spring encircles a screw having threaded oppositely portions with nuts thereon for spreading the tensioning plates apart to tension the spring and move the pressure plate away from the stationary plate when the screw is rotated in one direction, and the tensioning plates are axially retractable on the screw by spring tension when the nuts are retracted by reversely rotating the screw, to apply substantially constant closing pressure through the linkage to the pressure plate.

Abstract: A spring actuated pump device is mounted on a container for fluid, the device including a pump chamber into which fluid from the container can flow, the spring forcing a cylinder structure against the fluid in the chamber to pressurize it, in order that opening of a finger actuated discharge valve will effect spraying of a desired quantity of fluid from the device, a suitable captive nut being swivelly mounted on the container against axial movement with respect thereto, the nut being threadedly connected to the cylinder structure to enable such structure to be shifted axially in response to rotation of the nut relative to the container and cylinder structure to compress the spring and store additional fluid pressurizing energy therein.

Abstract: A device for dispensing fluids employs a manually actuated pump mounted in the neck of a conventional container. The pump includes a stationary piston and a shiftable cylinder which form a pump chamber. The piston includes a check valve which controls the fluid inlet to the pump chamber. The cylinder is spring biased in a direction which pressurizes the fluid in the pump chamber. An upwardly extending neck of the cylinder is exteriorly threaded and carries a discharge valve. A cap which fits over the container neck, cylinder neck and discharge valve has an internally threaded tubular portion which can be engaged with the thread on the cylinder neck. The cap can be turned with the threads engaged to lift the cylinder against the bias of the spring and draw fluid into the pump chamber. With the cap removed, the discharge valve can be opened to allow fluid in the pump chamber to flow through the cylinder neck and exit from the discharge valve.

Abstract: A dilution system which employs hand manipulated microdispensers including a power actuator for discharging diluent from one or more microdispensers through a flexible conduit to a remote handle carrying a sample microdispenser and a control for the actuator arranged for single-handed dispensing of a sample and diluent.

Abstract: A dispensing pump having no check valves includes upper and lower mechanically-joined pistons which are moveable together through respective upper and lower cylinders. As the pistons are moved in one direction toward a rest position the cylinders are initially pressure-isolated and the upper piston aspirates spray liquid into the upper cylinder while the lower piston aspirates air into the lower cylinder. Before reaching the rest position the pistons unblock flow communication between the cylinders to permit liquid from the upper cylinder to fall into the lower cylinder. During movement of the pistons in the opposite direction the cylinders are again pressure-isolated and the lower piston forces liquid from the lower cylinder through a spray outlet under high pressure.

Abstract: A dispensing unit which may be readily incorporated in an enclosure, such as a conventional can. The dispensing unit includes a readily collapsible bag in which a product to be dispensed is stored, and a plurality of spring strips. Each of the spring strips is of a construction to inherently roll into a coiled form and constantly urging the collapsing of the container. When the container is incorporated in an enclosure of the general can type including an upper end unit secured to a body by a seam, upper end portions of the spring strips may be anchored within the seam.

Abstract: A non-pulsating, non-throttling, vented pumping system with pressure release features is disclosed. This pumping system provides continuous dispensing of fluent product from a container in a relatively non-pulsating discharge which may be a stream or spray.

Abstract: A dispensing device includes a manually operable loading member carried by and accessible exteriorly of a container having a material to be dispensed, with the loading member connected through a gear arrangement with a material dispensing piston reciprocable in a dispensing chamber which is in communication with the interior of the container. Operation of the loading member in a first direction effects reciprocation of the piston in a first direction to draw material into the dispensing chamber, and a spring acts on the piston to move it in a second direction to dispense the material from the chamber through a nozzle for use as desired.

Abstract: A dispenser for soft foods and the like including a thin-walled container having a piston assembly threaded to one end and including a cap element having an aperture in the end surface, a piston head within the container, a coil spring extending through the aperture and a knob rotatably connected to the cap and fixed to the other end of the spring. Rotation of the knob compresses the spring in the region between the piston head and cap end surface to store energy for dispensing the food. A dispenser assembly is threaded to the opposite end of the container and includes a nozzle, a container outlet in communication with the nozzle and a valve element for opening and closing the outlet. A spring-biased actuator element has a rack portion engaging a pinion portion of the valve element, and the actuator element is moved by a handle lever pivoted to the container.

Abstract: A piston type fluids mixing and proportioning device has a chamber where the fluid displacing piston is driven during one of its strokes through a fluid drive coupling, which is established in another chamber that has a driven piston element for displacing fluid received in the chamber and which is equipped with a passageway for delivering the coupling forming fluid to and from the chamber. The piston passageway moves relative to intake and discharge passageways for the coupling forming fluid. Both pistons are spring biased for movement during one stroke and the driven piston element is driven during its other stroke by a driven cam mechanism that has a predetermined period of cyclic operation along with components that engage and disengage the element in a manner that permits the piston element to be locked in a fixed position when the fluids in the chambers are being displaced.

Abstract: A non-pulsating, non-throttling, vented pumping system is disclosed for continuously dispensing product from a container in a relatively non-pulsating stream or spray. The pumping system includes a pump for withdrawing product from a container and for pressurizing the product, a storage compartment for storing the product under pressure, an accumulator piston in the storage compartment acting under bias to maintain the pressure on the product, an outlet passage opened and closed by the accumulator piston, and a restricted orifice at the outlet passage through which the product is dispensed as a stream or spray. The restricted orifice allows only a portion of the product pressurized by the pump to escape during the pressure stroke of the pump, and the remainder of the product is stored in the product storage compartment to be released for maintaining the spray or stream when the pressurizing pump is acting on its intake stroke.

Abstract: A fluid transfer device including a casing having a fluid port, a flexible wall container in the casing and communicating exteriorly thereof through the fluid port, a resiliently biased plunger in the casing urged toward the container for collapsing the latter and expelling fluid through the port, and valved discharge means for selectively controlling fluid discharge through the port.

Abstract: A grease gun of the type wherein a dispensing head assembly having a lever-operated piston pump is screwed onto the head end of a grease-containing cylinder and wherein a spring-biased plunger and rod assembly in said cylinder is operative to feed grease from the cylinder to the pump, said dispensing head assembly being characterized in that the head cap thereof has diametrically opposite holes through the side wall thereof in which a pump cylinder of circular cross section is firmly supported, in that a sheet metal clevis for a link of the pump-operating lever has its base secured as by welding on the end wall of the head cap, and in that a check valve body is secured in a cross bore adjacent the closed end of the pump cylinder and extends through aligned holes in the head cap end wall and the clevis base to provide a pump outlet to which the grease dispensing tube is connected, said check valve body having a shoulder engaging the clevis base to prevent breaking away of the clevis from the head cap end wall

Abstract: The liquid dispenser disclosed herein comprises two telescoping sleeves, one sleeve having a base portion to be mounted on the mouth of a container and the other sleeve forming an actuator having a discharge aperture, and a pump unit sandwiched between said sleeves and having a pump cylinder, a piston mounted in said cylinder and having a tubular piston rod connected to the spray nozzle of the actuator, and a return spring between said pump cylinder and said actuator, said spring being isolated from the liquid being pumped. The pump unit may be assembled by machine and can be tested for leakage, prime retention and operability before being inserted between the telescoping base and actuator parts, the pump unit having as a unitary part thereof a dip tube adapter to extend into the container from which the liquid is to be dispensed. The pump unit, being self-contained, may be used with various base portions designed to be mounted on container necks of different diameters.

Abstract: There is disclosed a system and dispensing unit for the controlled and metered dispensing of a liquid product, or of two or more liquid products, which should be combined in the right proportions only shortly before ultimate usage. The basic system, as disclosed, employs a single pressure source for pressurization of the liquid product and the pressurized dispensing of the liquid product from the dispensing unit, per se. In addition to the basic illustrated system, there are disclosed novel dispensing units which enables the dispensing of a uniform or proportioned amount of liquid upon each operation thereof. Further, these units are constructed so as to permit the dispensing of several different liquids simultaneously from the same unit, or the selected dispensing of the individual liquid.

Abstract: A liquid metering dispenser is actuated by a trigger. The trigger releases a valve rod which is spring actuated to close a fluid pressure inlet, opening the discharge outlet of the dispenser to release a stored measured charge of liquid by operation of a spring actuated piston. The trigger is cocked by drawing the valve rod to close the discharge valve and open the liquid pressure inlet; the liquid under pressure enters the storage chamber, compressing the piston spring until it strikes an adjustable stop. The piston and spring assembly is readily removable for cleaning and servicing.

Abstract: A feeder apparatus for feeding dry, granular material from a barrel into a hopper and from the hopper into a mixing tank has a plunger which accepts small predetermined amounts of material through an opening in the bottom of the hopper, slides to a second position where the material is released into the mixing tank. The plunger is solenoid actuated and has an electronic timing circuit for actuation in a predetermined time sequence for varying the amount of material deposited in the mixing tank.

Abstract: An improved dough scaler for preshaping and cutting a predetermined amount of dough comprising: a dough pressure chamber; a movable pressure plate slidably engaging the upper end of pressure chamber for compressing the dough; equalizing compression springs connected between the pressure plate and the pressure chamber to maintain constant dough pressure throughout the chamber; switching means to control the proper amount of dough pressure for the dough to be extruded through sizing ports on an extrusion plate mounted at the lower end of the pressure chamber; and valve-like cutting means connected to the extrusion plate to cut the extruded dough to the proper size. Consistent dough quality, size, and shape are produced at a rapid rate with a fewer number of intermediate operational steps.

Abstract: A fluid dispensing system for accurately dispensing precise aliquots of fluid rapidly and efficiently. The system includes a reservoir of fluid and a pump adapted for connection to a reservoir of fluid and for transferring precise aliquots of fluid from the reservoir to an outlet orifice. An inlet tube is provided with a bore therethrough and one open end for fluid communication with a reservoir and the other open end in fluid communication with the pump. An outlet tube is provided having a bore therethrough with one open end forming the outlet orifice for the system and the other open end in fluid communication with the pump. Controls are connected to the pump to precisely regulate the amount of fluid in an aliquot transferred from a reservoir through the inlet tube, pump and outlet tube to the outlet orifice during an operating cycle of the pump.

Abstract: An aerosol dispenser of the hand-held type, comprising a can which contains a flexible, collapsible bag having the substance to be discharged. A valve on the can communicates with the bag to effect the discharge. In the can a spring engages a wall portion of the bag, tending to collapse the same, and there are manually operable means including a finger piece for varying the force applied by the spring to the bag as the contents of the latter are gradually depleted whereby the rate of discharge of the spray can be maintained more nearly constant regardless of the quantity of substance occupying the bag at any particular time.

Abstract: A manually operated, hand-held, rechargeable, liquid spraying device having a non-pressurized, refillable or non-refillable container, is disclosed. The sprayer, a completely contained device, comprises a charging mechanism whereby, upon rotation of one part relative to another part, a movable piston is displaced vacating a charge chamber which, simultaneously, is charged with liquid. Displacement of the piston compresses a responsor or spring which, in turn, causes the piston to exert a hydraulic pressure on the liquid now in the chamber vacated by the piston. Hydraulic pressure on the charge chamber liquid is maintained by the closing of a one-way, elastomeric resilient valve in the entrance in the chamber, which closing occurs when the piston halts in its movement.