Abstract: A coating apparatus according to the invention comprises a spin chuck for holding a substrate, resist solution tanks which contain a primary resist solution, a thinner tank which contains thinner, a confluence valve communicating with the thinner tank and the resist solution tanks, first pumps each for supplying the confluence valve with the primary resist solution from a corresponding one of the resist solution tanks, a second pump for supplying thinner from the thinner tank to the confluence valve, a mixer for mixing the primary treatment solution and thinner supplied from the confluence valve, a nozzle for applying a solution from the mixer, to the substrate held by the spin chuck, and a controller for controlling the first and second pumps to adjust the mixture ratio of the primary resist solution to be supplied from each of the resist solution tanks to the confluence valve, to thinner to be supplied from the thinner tank to the confluence valve.

Abstract: A multiple color painting apparatus has dedicated passages for carrying paints from a plurality of paint tanks each filled with paint of a different color. A single pump is disposed at the outlets of the dedicated passages. The delivery passage of the pump is used as a single common passage. A paint gun is connected to this common passage. As a result, when the paint color being used is changed it is not necessary for the dedicated passages to be washed with washing liquid and only the common passage from the pump to the paint gun need be washed.

Abstract: A system for dispensing an alkaline liquid cleaner solution and an acidic liquid rinse solution via a rotating head on a carpet cleaning machine, wherein the flow of the liquid cleaner solution and the liquid rinse solution are metered such that the rinse solution neutralizes the alkaline cleaner solution and leaves the carpet chemically neutral and residue-free.

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

Abstract: A device is mounted between an inlet pipe and a shower head and includes a receptacle for mixing a stream of water with additives. A portion of the stream of water passing from the inlet pipe to the shower head is diverted into the receptacle. The receptacle includes replaceable containers, a first container containing a first additive and a second container containing a second additive. The diverted stream of water mixes with the first additive and the second additive upon contact with the first and second containers. The diverted stream containing additives is then returned to the main stream of water which exits the shower head. The flow of the diverted water to and from the receptacle is controlled by a valve. The present invention provides an improvement over known arrangements by providing additives which are kept separate from one another preventing a chemical reaction between the additives which would cause a loss of potency.

Abstract: Disclosure is directed to two preferred embodiments for a multi-chamber dispensing apparatus, particularly useful for home owners, for dispensing one or more different water transmittable products. The apparatus, to work in conjunction with conventional hose sections, includes plural chambers, each with a metering valve to adjust the flow of product from the respective chambers. One or more of the metering valves may be opened to effect a mixing of product, if desired.

Abstract: A dispenser for holding two or more cans of material adapted to create a froth, a caulking or like product. The holders of the cans contain separate attachments for engaging the containers and holding them in a position of use. This insures that the cans cannot be inserted the wrong way into the dispenser. In a preferred form, the dispenser includes two can holders, a manifold, a dispensing gun and a receiver for a disposable nozzle. The two can holder fittings are respectively male/female, and in another embodiment, left hand/right hand threads.

Abstract: The shower spa fixture is mounted between an inlet pipe and a shower head and includes a container for mixing a stream of water with additives. A portion of the stream of water passing from the inlet pipe to the shower head is diverted into the container. The container includes a replaceable cartridge which has a first additive in a first chamber and a second additive in a second chamber. The diverted stream of water mixes with the first additive in the first chamber, passes through a screen to the second chamber, and mixes with the second additive in the second chamber. The diverted stream containing additives is then returned to the main stream of water which exits the shower head. The amount of additives added to the main stream of water is controlled by a control valve. The present invention provides an improvement over known arrangements by providing two additives which are kept separate from one another preventing a chemical reaction between the additives which would cause a loss of potency.

Abstract: An apparatus with two identical fluid reservoirs for the containment of paint or other finishes to be applied by spraying using compressed air is disclosed. Each of the two reservoirs is connected via metallic tubing to a spray mechanism of conventional design. Each tubing line is equipped with an integral shutoff valve to allow the user to select which paint or finish is applied. When the user wishes to change to the opposing reservoir, both shutoff valves are closed and the remaining paint in the tubing and spray mechanism is blown through. Then the shutoff valve on the desired reservoir is opened allowing the desired paint or finish to be applied. The operating controls as well as the physical weight, center of gravity and balance are similar to that experienced with a conventional single reservoir, air powered, paint gun, allowing the user to quickly become accustomed to the present invention. Preparation, use and post-use clean up are accomplished using readily known procedures and common practices.

Abstract: The present invention relates to a waterproofing spraying apparatus for delivering a waterproofing coating to the exterior surface of a basement wall which requires moisture proofing. The spraying apparatus includes a remote controlled airless fluid pressurizing unit, a pair of hoses and a spray gun. The spray gun including a moveable arm which is moveable between an extended position and a deflected position. Attached to the end of the moveable arm is a pair of nozzles for delivering the waterproofing coating from the spray gun. The waterproofing coating comprising two fluids which are mixed external to the spray gun after leaving their respective nozzle.

Abstract: Rechargeable dispensers, in particular spray bottle dispensers including at least one chemical reservoir for recharging the spray bottle dispenser. Preferably, a separate solvent reservoir and chemical concentrate reservoirs are provided.

Abstract: A dual fluid dispenser comprising a dispenser body and a nozzle. The dispenser body has first and second pump chambers, a first intake port adapted for fluid communication with a first liquid source, a second intake port adapted for fluid communication with a second with a first liquid source, a second intake port adapted for fluid communication with a second liquid source, first and second intake liquid flow paths for passage of fluid from the intake ports to the pump chambers, and first and second discharge liquid passageways. A third discharge liquid passageway is defined at least in part by the dispenser body. The third discharge liquid passageway includes a mixing chamber and a spinner chamber downstream of the mixing chamber. The first and second discharge liquid passageways are configured for passage of liquid from the first and second pump chambers to the mixing chamber. The nozzle includes a nozzle orifice in fluid communication with the spinner chamber.

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

Abstract: Simultaneous pump dispenser of the trigger-sprayer type has a single container with separate liquid compartments. Side-by-side main cylinders in the dispenser body have vent cylinders there-adjacent. Pistons in all cylinders are worked together by a piston/nozzle assembly separately to pump the liquids and vent the containers. A manifold in the top of the container connects supply tubes and vents in the compartments to the risers and vent passageways for the respective main and vent cylinders. The discharge may be separate spray orifices, a single spray orifice combining the liquids or a single foaming orifice.

Abstract: A spray gun for dispensing two liquids under pressure independently from one another or both simultaneously to form a mixture. The spray gun has a barrel in which are independently displaced two valves which are each spring biased to a closed position. A pair of trigger levers are pivotally secured to a single handle of the spray gun and independently or simultaneously actuable by the fingers of a single hand of the user person whereby to dispense two fluids independently or simultaneously. The valves are mounted coaxially within one another within the barrel of the gun. The valve assembly is easily removed from the barrel of the gun to facilitate servicing and assembly.

Abstract: A lawn chemical dispersal system including a remotely positionable spray nozzle having a nozzle intake connector and at least one nozzle discharge orifice; and a lawn chemical mixing unit having an intake hose coupling, a flow pipe in connection with the intake hose coupling; an anti-backflow valve installed within the flow pipe; a bottle connecting assembly including a bottle neck insertion cavity, a resilient bottle neck sealing ring, a mouth cover rupturing tube and a control valve, the control valve being in connection between the rupturing tube and the flow pipe; a lawn chemical bottle including a chemical bottle cover adhesively secured over and covering a chemical bottle opening and a chemical bottle neck, the chemical bottle neck sealing seating against the resilient bottle neck sealing ring when the chemical bottle neck is inserted into the bottle neck insertion cavity; a mixing assembly having an intake side and a discharge side, the mixing assembly further including an intake side screen and a disc

Abstract: A mixing and dispensing system for two reactive fluids, such as two-component polysulfide sealants, in which the dispensed fluids are supplied to a hand operated mixing and dispensing gun through a pair of flexible hoses suspended above the floor from a pivotal boom. The flexible hoses are pivotally attached with swivel joints onto the inlets of the gun that are spaced on opposite lateral sides of the gun, and the swivels are rotatable about a common generally horizontal pivot axis. The gun is fully weight supported in an operative position above the floor with a tool balancer attached to the boom. The tool balancer includes an adjustably tensioned and extendable line that is pivotally attached to the top of the gun body and rotatable about a generally vertical pivot axis.

Abstract: A compact portable cleaning device is provided that is useful for quick clean-up jobs. The device includes a water bottle with an integral hand pump for pressurizing the contents of the bottle. A hose is used to direct the pressurized water to either a spray nozzle or a portable faucet, either of which can be attached to the hose. The spray nozzle includes a trigger switch and an adjustable spray head which makes it useful for quickly rinsing an object. The portable faucet includes an integral valve for permitting the flow of a stream of water which makes the faucet useful for hands-free operation such as for washing one's hands. A carrying case is also provided with storage for the spray bottle and a spare bottle. The carrying case includes a bracket for permitting the portable faucet to be held in a convenient position for washing.

Abstract: Simultaneous pump dispenser of the trigger-sprayer type has a single container with separate liquid compartments. Side-by-side main cylinders in the dispenser body have vent cylinders there-adjacent. Pistons in all cylinders are worked together by a piston/nozzle assembly separately to pump the liquids and vent the containers. A manifold in the top of the container connects supply tubes and vents in the compartments to the risers and vent passageways for the respective main and vent cylinders. The discharge may be separate spray orifices, a single spray orifice combining the liquids or a single foaming orifice.

Abstract: A system and method for injecting liquid/solid mixtures into porous pulse media, such as earth, is disclosed. A two-tank arrangement where liquid only is stored and run through a main pump, while a liquid/solid slurry is stored and moved to join the liquid under pressure by a chemical injector pump is shown. Finally, a displacement wheel commands solenoid valves, for pulsing the pressured liquid, through a distance measuring device such as a laser interacting with a laser target operatively coupled to a ground traveling wheel.

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

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

Abstract: An apparatus for dispensing two sprayable substances in a user selectable ratio. The dispensing apparatus comprises first and second pressurized containers for holding first and second sprayable substances. The dispensing apparatus further includes a manifold member having first and second inlet openings and an outlet opening. The inlet openings receive the dispensing ends of the first and second pressurized containers. The manifold member includes two passages which are in fluid communication between the first and second inlet openings and the outlet opening, respectively. A selector member having a single opening extending therethrough is provided in fluid communication with the first and second passages in the manifold member. The selector member is selectably rotatable with respect to the outlet opening in the manifold member.

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

Abstract: A snow coloring device comprised of a cylindrical pressure container having a pump therein. The container has valve stems extending outwardly of a top end thereof and extending outwardly of a side wall thereof. A pair of hoses are coupled with the valve stems of the cylindrical pressure container. An elongated housing has a first end adapted to coupled with an end portion of the hose extending from the valve stem in the top end of the cylindrical pressure container. A second end has a spray nozzle secured thereto. The elongated housing has a transport tube extending from the end portion of the hose to the spray nozzle. A paint container is integral with the upper portion of the elongated housing downwardly of the trigger mechanism. The paint container has a valve stem secured thereto coupled with the air hose from the side wall of the cylindrical pressure container. The paint container is adapted to hold coloring dye therein.

Abstract: A system for the mixing of two or more interacting heated solutions and the simultaneous application of the mixed interacting solutions to a fabric surface. The system is made up of a mobile supply base and an elongate applicator having a valved mixing chamber at the proximal end and a fluid distributing manifold at the distal end. The mobile supply base houses multiple containers, each adapted for holding and heating solutions to a desired temperature. The supply base also contains one or more pumps for the delivery of solutions from each container through interconnecting lines to the valved mixing chamber at the proximal end of the applicator. The applicator is an elongated support structure such as a wand. At the proximal end of the applicator, the valved mixing chamber is configured to receive and meter solutions from the supply base through the interconnecting lines into a mixing chamber maintained at substantially ambient pressure.

Abstract: A trigger sprayer apparatus for use with a container having multiple compartments, the apparatus having a pump for drawing liquid from the container compartments to the pump, wherein check valves prevent liquid from backflowing from the pump to the compartments and the pump has control valves for selecting the mixture ratio of the liquids entering the pump.

Abstract: A fluid dispenser for simultaneously dispensing disparate fluids separately stored in separate fluid compartments of a container includes a single pump cylinder defining together with a dual seal piston a pair of in-line pump chambers for separately and simultaneously pumping the disparate fluids along separate discharge paths.

Abstract: A fluid-mixing device and a fluid-dispensing system are disclosed. The fluid-mixing device comprises a nozzle (200) having an outlet (210), an inlet (208) adapted for receiving a high-pressure liquid diluent, a nozzle mixing chamber (226), an orificed fluid passageway (236) communicating with the mixing chamber (226), and an orificed fluid-metering element (180) in fluid communication with the fluid passageway (236). A vacuum effect is created in the mixing chamber (226) when high-pressure liquid is passed from the nozzle inlet (208) to the nozzle outlet (210).

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

Abstract: Rechargeable dispensers, in particular spray bottle dispensers including at least one chemical reservoir for recharging the spray bottle dispenser. Preferably, a plurality of separate chemical reservoirs containing chemical concentrate are provided within the spray bottle dispenser to fully contain any inadvertent spillage of chemicals, and to insure a high degree of safety against accidental spills, and/or accidental ingestion by children.

Abstract: A manifold for use with a hand held pump spray device allowing the spray head to draw simultaneously from two separate reservoirs containing two different fluids such that the spray heads raise a mixture of the two fluids in a predetermined ratio. The manifold includes at least one ball check valve arrangement in the suction line to the chemical concentrate reservoir, the ball check valve being normally biased to a closed position. The check valve presents the pumping of the concentrate when the diluent reservoir is spent and further prevents cross contamination between the fluids in the two reservoirs due to syphoning.

Abstract: A paint system utilizes a paint pumping station comprising a plurality of small paint pots, one for each color inventoried in the system. A pump is provided for each paint pot and is connected through a like plurality of lines to color changers at each paint station. Each color changer utilizes lighted push buttons that are energized by an encoder that tracks vehicles moving through the spray booth and directs the painter to the proper paint for the vehicle being painted.

Abstract: A unitary, multi-purpose, self-contained apparatus for the selection, variable dilution, mixing and dispensing of one or more fluids into a diluent stream is described. This apparatus is made from two, complimentary halves which describe the various reservoirs, line feeds, and valves used to add these fluids to an incoming diluent stream. The apparatus can be used in combination with a shower, bath, sink faucet, hose, washing machine, and dish washer and can be used to dispense soaps, shampoos, detergents, and disinfectants, or also fertilizers, insecticides and the like. The apparatus can also be used in the embalming and medical field as well as to select, dilute, mix and dispense ingredients to prepare coffee and sodas, in coin operated dispensing machines.

Abstract: A fluid-dispensing device which selectively draws fluid out from at least two containers or fluid chambers, mixes the fluids in a desired concentration or ratio and expels the mixture of fluids out a nozzle. The dispensing device may be equipped with a mechanism for variably controlling the ratio of the fluids being mixed. The containers may be bottles connectable to the fluid-dispensing device and selectively detachable for refilling with fluid or exchanging one of the containers with another container having an alternate fluid. The bottles include mating elements to permit interconnection of the bottles as well as venting and spill prevention mechanisms.

Abstract: The invention includes an electrically isolated electrically less-conductive component fluid-flow course and an electrically-grounded electrically more-conductive component fluid-flow course. The electrically more-conductive component fluid-flow course may be additionally electrically isolated at the preference of an operator. The invention includes an electrostatic spray gun a mixer positioned proximal to the electrostatic spray gun, and a first conduit which holds alternating segments of electrically more-conductive component and electrically less-conductive component. The alternating segments function in series to additively provide a combined resistance which electrically blocks the high-voltage potential generated at the electrostatic spray gun.

Abstract: A system for proportioning and dispensing concentrated liquid products is disclosed. The components of the system's first embodiment are mounted upon a cart (12). A concentrate solution tube (14) is interconnected to a dilution assembly (61) containing an aspirator (26). A water supply assembly (69), containing a valve (75) and backflow preventer (74), is connected to the aspirator assembly (26) when dilution of the concentrated product (13) is desired. A discharge tube (68) carries the diluted product from the aspirator assembly (26) to a container (60). The system's second embodiment has a spray gun assembly (150) containing an aspirator (167), a valve (166), and preferably though not necessarily, a backflow preventer (165). The concentrate pickup tube (114) attaches to the spray gun assembly (150) with a releasable connector (170). The spray gun assembly has a rigid delivery tube (153) for dispensing to large containers (160), and a nozzle tip (180) for attachment to an inlet port (119) of a jug (111).

Abstract: An apparatus for a liquid and pressurized gas includes a gas inlet hose for conducting the pressurized gas therethrough, a liquid inlet hose, extending through the interior of the gas inlet hose, for conducting the liquid therethrough, a hose separator connected to an end of the gas and liquid inlet hoses, a gas outlet hose connected through the hose separator so as to be in fluid communication with the gas inlet hose for further conducting the pressurized gas therethrough, a liquid outlet hose, separate from the gas outlet hose, connected through the hose separator so as to be in fluid communication with the liquid inlet hose for further conducting the liquid therethrough, and a main outlet hose connected to and in fluid communication with the liquid outlet hose and the gas outlet hose. The apparatus further includes a first valve positioned within the liquid outlet hose to regulate flow therethrough and a second valve positioned within the gas outlet hose to regulate flow therethrough.

Abstract: A metering and mixing device is disclosed including a hand truck carrying a couple of tanks of varied capacity, one for water, the other for the cleansing agent, which are connected to an atomizing lance, and a plurality of valves, feed cocks and meters for controlling the flow of water, detergent and compressed air from said tanks through the atomizing lance. The latter is provided with a first chamber for mixing the detergent with water, and a second chamber for the foaming. Both the metering of the detergent and the foaming can be controlled through hand controls provided on the lance.

Abstract: The present invention relates to an apparatus controlled by computers, for applicating fertilizers through automatic water-spray in a golf link, farm, garden, indoor garden and flower-vegetable garden on a terrace and roof of a building. The apparatus comprises a storage pump for pumping up water from a water source; filter devices for filtering the thus pumped-up water; injector devices for mixing fertilizers, agricultrual chemicals, bacteria and the like with the water; pressure regulating valves for uniformalizing the pressure of the water mixed with fertilizers and the like in a plurality of branched paths; water-spray devices for spraying the water thus uniformalized in pressure; and a control device for organically controlling the above devices.

Abstract: An apparatus and method for storing and mixing components for forming a product and dispensing the resultant product. The apparatus comprises a dispensing head, a first cartridge for storing a first fluid component, and a second cartridge for storing a second fluid component. The first cartridge and the second cartridge each have a first open end and a second closed end. A first distributor provides fluid communication between the first cartridge and the dispensing head, and a second distributor provides fluid communication between the second cartridge and the dispensing head. Both the first and second distributors have a preselected effective stroke distance. A compensating assembly is also provided. A housing maintains the dispensing head, first cartridge, second cartridge, first distributor, second distributor, and compensating assembly in operative relation with each other.

Abstract: A dispensing device or trigger sprayer which selectively draws fluid out from at least two containers, mixes the fluids in a desired concentration or ratio and expels the mixture of fluids out a nozzle. The trigger sprayer is equipped with a metering device for variably controlling the ratio of the fluids being mixed. The containers or bottles connected to the trigger sprayer are selectively detachable for refilling a container with fluid or exchanging one of the containers with another container having an alternate fluid.

Abstract: An apparatus for dispensing at least two liquid compositions, one as a wet spray and one as an aerosol spray comprising at least two liquid supply reservoirs, an air supply for pressurizing the reservoirs, and individual capilliary tubes connecting the reservoirs and a pressurized air source to a dispensing wand. The wand comprises a solid handle with ducts therein connected at one end to one of the capilliary tubes, each duct provided with a suitable valve for controlling fluid flow therethrough. A tube is attached at the opposite end of the handle with capilliary tubes therein attached to the liquid ducts passing therethrough to a nozzle head attached to the opposite end of the tube. The nozzle head is provided with a nozzle to dispense a liquid in the form of a wet spray and a nozzle to dispense a liquid as an aerosol spray with pressurized air passing therethrough and mixing with the liquid to provide the aerosol spray.

Abstract: A pressurized ventilation system to supplement patient respiration which enables introduction and atomization of prescribed liquids and removal of condensation while maintaining pressurization and functions of the ventilation system and minimizing hazards due to contamination. An atomizer outlet is positioned to enable entrainment of atomized particles of the prescribed liquid into the breathable gas flowing to the patient. A novel arrangement of a valve and conduit provides for contamination-free attachment of a syringe or unit dose vial for the introduction of the prescribed liquid. An enclosure means for trapping condensate and control means for safe removal of condensate from the system are provided. The ventilation system, with the improved arrangement, provides novel functions and can be operated and maintained more conveniently and expeditiously than prior art ventilator system while reducing the risk of infection for both the patient and the attendant.

Abstract: The invention provides a shower utensil having a brush and adapted to rapidly and efficiently shampoo pet animals having a large quantity of long hair or persons. The utensil is characterized in that in addition to bristles formed on the outer surface of a water spray wall on the bottom side of a main body container, at least one hollow projection having a hollow portion in communication with the interior of the container is formed on the outer surface of the water spray wall for forcing out water from its outer end.Since water is forced out from the hollow projection as positioned deep in the inner portion of the hairy covering of the animal, i.e., close to the skin, the covering of large amount of long hair can be rapidly soaked with the washing water or shampoo preparation fully to the skin.

Abstract: A resilient dispenser (30) for dispensing two flowable materials in touching association is provided. When the dispenser is squeezed the materials are dispensed through juxtaposed apertures such that the materials share a common boundary after dispensement. A removable spout (60) allows easy filling of the dispenser. Various embodiments (130,230,330, 430,530) are provided, some of which impart interesting patterns to the dispensed materials. The invention includes extension to more than two materials or restriction to one material. A method of use is provided.

Abstract: An apparatus for assisting in the hand washing of cars. Several tubes semi-surround a vehicle path. Each tube has nozzles directed at the path. Each tube may be supplied with a different washing fluid. The tubes are mounted in a housing. A radio remote control actuates each fluid separately.

Abstract: A device and method for precisely spraying quantities of pesticides or other chemicals or fluids with little waste is disclosed. The invention includes dual tanks, one each for the concentrated fluid (typically pesticide) and diluting agent (typically water), and a means for automatically mixing their contents downstream of the tanks during the spraying operation. Variable pressure controls, fluid flow rate monitoring devices, and a finely-gauged injection means such as a hollow needle allow for precise mixing of the two fluids contained in the tanks, making the sprayer useful for applying biological control agents as well.

Abstract: An aerosol dispenser having a transparent container for storing propellant and a first compound under pressure. A normally closed valve is mounted on top of the container to control the dispensing of the materials from the container. An ampule containing a second material separate from the first material until the ampule is broken is positioned generally longitudinally along the length of the container with a sleeve. A push rod connected to the valve and extended through a generally cylindrical filter surrounding the valve has a convex shaped finger and an inclined shoulder that cooperates with a beveled edge of the sleeve to break the ampule when the valve is first moved to an open position. The materials are mixed within the container and move through the filter before entering the valve. The mixed materials and propellant are dispensed through a nozzle of an actuator member mounted on the container when the actuator member is depressed causing the valve to open.

Abstract: A method and apparatus for metering and pumping multicomponents of high and low viscosity materials and subsequently mixing and applying the mixture includes gear pumps for pumping each component. Each gear pump has gears operating in a gear housing for receiving and pumping one of the components. The gear pumps are simultaneously driven at a predetermined speed and each gear pump is designed to pump a predetermined amount of its respective components, at the predetermined speed. Flexible hoses connect the pumps to an applicator. Check valves are used to maintain the pressure in these hoses when the pumps are in their at-rest position. The gear pumps may be driven at the same rotational speed but are designed to pump a predetermined amount of the different materials so that the ratio of materials can be precisely set.