Abstract: An add-on valve assembly for dual-component cartridge has a valve member and a retainer nut which secures the valve member to a dual-component material cartridge. The valve member includes a body having a forwardly extending threaded nozzle and rearwardly extending top and bottom tubes. First and second passageways are formed in the top and bottom tubes, respectively, and extend through the body and nozzle. A valve stem extends generally vertically within the body and is rotatably mounted therein. The valve stem is formed with top and bottom holes which align with the first and second passageways, respectively, when the add-on valve assembly is rotated to an open position and which extend perpendicular to the first and second passageways, respectively, when the add-on valve assembly is rotated to a closed position. The tubes are adapted to extend within respective passageways of the material cartridge and communicate with a pair of chambers formed within the material cartridge.

Abstract: A foam-dispensing device includes a main tubular housing which houses a material cartridge. Several chambers are formed within the material cartridge with each chamber containing a separate material. A motionless mixer is attached to the dispensing end of the cartridge. The motionless mixer includes a tapered rear end into which the materials flow exposing the materials to one another, and a front end containing a helical mixing element. A hole is formed transversely in the motionless mixer between the rear end of the mixer and the helical mixing element for receiving a supply of pressurized gas therethrough. The materials flow out of the cartridge and into the rear end of the motionless mixer. After the materials have been exposed to one another, the materials pass by the hole and are injected with the supply of pressurized gas. The pressurized gas is injected into all of the materials after the materials have contacted one another but before the materials are mixed together by the helical mixing element.

Abstract: A fluid flow meter has a housing within which inlet and outlet displacement rotors flank a blocking rotor. The end plates of the housing rotatably support all three rotors which rotate in a timed sequence in response to the passage of fluid through the meter. The cylindrical blocking rotor has a pair of disk-shaped endwalls joined by a rectangular, centrally-positioned web, and a pair of arcuate sidewalls which, with the endwalls and web define a pair of rotor cavities. Recesses in the housing end plates fit the blocking rotor endwalls and provide an added fluid seal. Use of the rotor endwalls makes it possible to manufacture the blocking rotor with a smaller diameter and thinner body portions, saving weight and rotational mass.

Abstract: A dispenser for dispensing flowable materials and in particular anaerobic materials. This dispenser has a material inlet which allows the flowable material to flow into a pump cylinder, and a material passage through which the flowable material exits the pump cylinder. The material is positively displaced from the pump cylinder by a material displacement assembly of the ball-nut follower-type. A flexible plastic diaphragm which has sufficient porosity to permit oxygen to flow therethrough is biased toward a closed position by a pressurized air supply which applies pressurized air against an outside surface of the diaphragm, enabling the diaphragm to function as a one-way shut-off valve. The diaphragm extends across the material passage formed in the pump cylinder and a material outlet through which the material exits the dispenser.

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

Abstract: An improved industrial meter housing assembly includes a compactly designed metal housing having a central trefoil shaped chamber and minimal length inlet and outlet ports in fluid communication with the chamber with the ports ending at inlet and outlet port faces on the housing outer surface oriented 90.degree.degrees from each other and 45.degree.degrees to the vertical with the housing in its upright position. The housing may be installed as original equipment in an industrial environment having upstream pipe connections provided to match those input and output port faces. However, the compactness of the housing may be utilized together with a pair of installations-specific inlet and outlet runner pipes to enable the combination meter housing/runners to be substituted for any existing original equipment industrial meter.

Abstract: A device which positively dispenses small, accurately measured, amounts of a flowable material, such as a resin, epoxy, etc. A pair of reciprocal pistons are movably mounted, each in a respective fluid pressure chamber, formed in a main body of a housing. One of the pistons moves a material dispense rod within a first section of a bore formed in a tubular portion of the housing. The second piston moves a sleeve which is telescopically mounted on the tubular housing between a material load position wherein flowable material is admitted into the first bore section, and a material discharge position wherein the first bore section is in communication with the second bore section.

Abstract: A hand-held dispensing device for dispensing small shots of a semi-solid material from a remote supply of such material which is connected to the device. A housing is formed with upper and lower pressure chambers. An upper piston is reciprocally movable within the housing for moving a connected dispensing tube between open and closed positions with a material outlet opening in a lower end of the device. A lower piston is reciprocally movable within the housing for moving a hollow stem of the piston within an annular dispense chamber located about a closed end of the dispensing tube. Downward movement of the lower piston stem in coordination with upward movement of the upper piston opens and closes a material outlet port formed in the dispensing tube to block further flow of material into the dispense chamber generally simultaneously with the forced discharge of the material from the dispense chamber by a lower end of the lower piston stem.

Abstract: A motionless mixer tube for mounting on the end of a discharge nozzle of a dispensing device for mixing and dispensing extremely small volumes of a pair of liquid materials, such as chemical reacting resins. The mixer tube has an elongated housing with a female luer lock at one end for mounting the tube on the dispensing device, and a male luer lock on the other end for easily mounting a dispensing needle on the outlet end of the housing. A helical motionless mixer element is mounted in a bore of the tube housing and extends from immediately adjacent the outlet end of an inlet socket of the female luer lock to immediately adjacent the outlet end of a discharge nozzle of the male luer lock. The dispensing needle is mounted immediately adjacent the outlet end of the discharge nozzle and mixer element. This arrangement avoids dead spaces within the mixer tube to prevent the formation of disruptive air bubbles therein and enables secure and rapid attachments at both ends of the tube.

Abstract: A positive displacement material mixing, metering and dispensing device having a housing with a pair of material inlet ports, and a pair of material outlet ports which are in communication with a pair of holding cavities, and a pair of valve chambers. A spool is slidably mounted in each of said valve chambers. An air actuated piston is in contact with opposite ends of the spools. Each spool has a reduced diameter central portion which communicates with a respective one of the material holding cavities at all times, but is in communication with the inlet and outlet ports only at discrete positions in the operating cycle and is never in communication with both the inlet and outlet ports simultaneously. One end of a pair of push rods moves into and out of the material holding cavities, with the other ends of the push rods being simultaneously actuated by an air piston.

Abstract: A gun for metering, mixing and dispensing the components of a two-component liquid material. A pair of chambers each having front and rear compartments, communicate with the liquid materials contained in pressurized portable cartridges through liquid material inlet openings formed in the rear compartment of the chambers. A material passage opening allows for communication between the front and rear compartments of the chamber, and an aligned material outlet opening formed in the front compartment allows for passage of the material out of the gun. A pair of independently adjustable rods are slidably mounted in the rear compartment of their respective chambers. Pump means drive the rods between a positive displacement position wherein front ends of the rods are sealingly engaged with the material passage openings and extend into the front compartments of the chambers, and a retracted position wherein the front and rear compartments are allowed to communicate through the material passage opening.

Abstract: A self-contained self-muffled pneumatic gun for dispensing one or two combinable flowable materials from a prefilled package or cartridge. The gun has a first hollow chamber for retaining the package in fixed relation, the package containing the materials to be dispensed and either having a dispensing valve thereon or not as known in the art. A second hollow chamber of the gun retains an axially-movable hollow tubular piston for pneumatically forcing discharge from the gun and through a metering, mixing and/or dispensing nozzle. The hollow piston has a quick-release valve mounted internally in its head portion for rapid release of pressurized gas internally of the gun body for its relatively quiet operation. Internal release of the gas pressure within the head portion serves to prevent noisy operation of the gun. The gun is capable of economical manufacture with the valve components being formed from essentially non-machined moldable components.

Abstract: A mixer mixes at least two fluid components of the type which when mixed together undergo chemical reaction to form a solid or semi-solid reaction product. The components are separately introduced into the mixer, whereat they are mixed, and the reaction mixture is discharged from the mixer prior to the completion of the chemical reaction and while still in a fluid state. When desired, for example when it is necessary to shut down the operation of the mixer, the chemical reaction in the mixer is arrested by selectively cooling the reaction mixture down to a temperature at which the chemical reaction will not occur or will at least be retarded. This prevents the formation of the reaction product within the final mixer. Thereafter, for example when the operation of the mixer is again commenced, the reaction mixture is reheated to an increased temperature at which the chemical reaction will continue.

Abstract: A planetary friction drive includes a plurality of balls which are driven about a frusto-conical outer race by an inner driving surface made up of a pair of jaws which are spring biased toward one another into frictional engagement with the balls, and the drive ratio is adjusted by axially moving the inner driving surface relative to the outer race.

Abstract: A fluid stream including separate layers of plural components is mixed by dividing the fluid stream into a plurality of substreams, reorienting and recombining the substreams in a chamber, and repeating the steps of dividing, reorienting and recombining until a desired degree of mixing of the components is obtained. The substreams of a given stage or group of substreams are controlled so that the substreams are longitudinally dephased with respect to each other such that the fluids of the substreams are longitudinally blended when recombined. The dephasing is achieved by providing that at least selected of the passageways for the substreams of a given stage of the mixer are dimensioned such that the total resistances to flow of the fluid of the substreams passing through the selected passageways, from the beginnings thereof to the ends thereof, are unequal.

Abstract: A non-rotating sleeve type bushing in which an eccentric flange integral with the bushing and projecting radially outwardly therefrom is so formed as to be received in a complementarily contoured flange recess in a bearing housing whereby rotation of the bushing with respect to the bearing housing is precluded by a positive mechanical locking action provided by the shear resistance of the flange member.

Abstract: A metering device carried by and housed within a two part housing, said housing being composed of two matching hemispherical portions, one of which hemispherical portions contains both an inlet and an outlet for the fluid to be metered, whereby the meter assembly may be disassembled for inspection and repair without disturbing any fluid piping, joints or connections, and reassembled and sealed in the shortest possible time.

Abstract: An actuating counter for use in conjunction with a fluid metering device, such as a liquid displacement meter, which can be preset prior to commencement of operation to count out a desired number of product units characterized in that upon actuation of the preset mechanism, further manual operation of the preset mechanism is precluded by an interlock mechanism which is equally adaptable to existing and newly manufactured counters, yet which can be aborted at any time in an emergency.

Abstract: A force translator in the form of an S-shaped flexible band is connected at its center by a double pivot linkage to an axially movable actuator which, in an air eliminator, is a float.