Abstract: Systems and methods for dispensing an anti-traction, mobility denial material on a target surface. In various exemplary embodiments, a method of dispensing an anti-traction material on a target surface includes providing a polymer particle powder to a first section of a dispensing nozzle, providing a water stream to a second section of a dispensing nozzle, and mixing the polymer particle powder with the water stream upon exit of the streams out of the first and second sections of the dispensing nozzle to form the anti-traction material on the target surface, the formed anti-traction material being a gel.

Abstract: The invention pertains to a vessel (1) for storing particulate matter, such a pulverized coal or fly ash, comprising a main part (2) and, at its bottom portion, at least one discharge device (3), which comprises a converging outer shell (10) and a permeable, converging inner shell (14) positioned in the outer shell (10), the discharge device (3) being connected to the main part (2) by means of a first flange (9) at or near the lower rim of the bottom portion of the main port (2) and a second flange (11) at or near the upper rim of the outer shell (10). The inner shell (14) is secured to the inner wall of the outer shell (10) of the discharge device (3), preferably to the inner wall of the second flange (11).

Abstract: A container for storing a liquid containing solids such as food products that includes a shut off assembly is provided. The container includes sidewalls and a funnel shaped bottom wall that defines an outlet for the liquid containing solids to be removed from the container. The shut off assembly is positioned at the outlet to open and close the outlet to permit the liquids containing solids to be stored in the container and to be opened to permit the solids to be removed from the container. A shut off assembly is provided at the outlet for providing a source of compressed air through the shut off assembly to effect mixing of the liquid containing solids stored in the container when the shut off assembly is in a closed position so that when the liquid containing solids is removed from the container it is homogenously mixed.

Abstract: Sluice vessel (1) for feeding solid particulates into a pressurized pressure vessel, the sluice vessel (1) having a low pressure state and a high pressure state, the sluice vessel (1) comprising means for charging the sluice vessel with a load of the solid particulates when the sluice vessel is in its low pressure state, at least one discharge port (4), and pressurising means (6) for increasing the pressure inside the vessel by bringing a pressurising fluid into the vessel, to bring the vessel into its high pressure state before discharging the load via the discharge port (4), whereby the pressurising means (6) comprises one or more pressurising fluid inlet means arranged to be submerged under the load of solid particulates.

Abstract: The present invention is directed to an apparatus for providing law enforcement and private citizens with a single device that integrates law enforcement tools and mechanisms for the application of force. An exemplary device features a metal detector, a light emitting source optionally having a strobe feature, an electric stun system, and a debilitating spray dispensing system. Some embodiments of the present invention include an electric stun system comprising a plurality of probes mounted to the distal terminus of the shaft and configured to protrude from the shaft, a plurality of plates configured longitudinally along the outer surface of the shaft, and a stun system switch disposed on the shaft. Some embodiments of the present invention include the debilitating spray dispensing system comprising at least one nozzle and a dispensing switch disposed on the handle. Some embodiments of the present invention include a handle comprising an ergonomic grip and a guard.

Abstract: An apparatus for dispensing fine particulate matter from a flexible container includes a housing with a first open end and an opposed closed end. A nozzle is attached to the closed end extending into the housing. The nozzle has a passageway extending therethrough and a first end puncturing a wall of the container and enabling the first member to penetrate the container. A pump member is disposed transversely to the nozzle and includes a passageway having a venturi and a venturi throat disposed adjacent a first end. The second end receives a supply of fluid under pressure. A vent is attached to the cover and has one end puncturing and penetrating the wall of the container. Supply of fluid under pressure forms a pressure differential between opposite ends of the container and enables the fine particulate matter to enter the first and second passage for mixing with the fluid.

Abstract: A device for dispensing a multicomponent composition composed of a mixture of different fluid components includes a first and at least a second fluid component inlet. The device also includes a mixing area located downstream from the fluid component inlets and an outlet extending from the mixing area. Each of the fluid component inlets is adapted to communicate with a source of a different fluid component. The mixing area is adapted to receive a flow of a first and at least second fluid component. Within the mixing area, the flow of the first fluid component is disrupted to allow mixing with the flow of a second fluid component to form a flow of multicomponent composition. The mixing area is further adapted to disrupt the flow of the multicomponent composition before the flow of the multicomponent composition exits through the outlet.

Abstract: An air cannon or aerator has a first source of a pressurized gas, such as a tank, a discharge tube assembly, a valve assembly configured to regulate the flow of pressurized gas from the tank to the discharge tube assembly, and a receiving member or basket having a first end configured to receive and seat the valve assembly and a second end configured to releasably and securely mate with the discharge tube assembly. The discharge tube assembly, valve assembly, and basket are all concentrically aligned along a central, longitudinal axis extending substantially coaxial with the longitudinal center line of the tank.

Abstract: An apparatus for discharging dry bulk material by aeration having a substantially annular flexible aeration liner supported by a substantially cone-shaped perforated hopper, which is affixed to an air disc assembly, whereby air introduced into the air disc assembly is distributed evenly through the perforated hopper that supports the aeration liner that tends to fluidize dry bulk material, thereby allowing the material to discharge.

Abstract: A method of inducing the movement of a flowable material in a system wherein the flowable material is guided by a surface assembly between first and second locations. The method includes the steps of: providing a first flexible tube; placing the tube at a first operating location with respect to the system; and directing a pressurized fluid through the tube in a manner whereby the first flexible tube is moved in a whipping action to at least one of: a) impact the surface assembly; b) direct the pressurized fluid at least one of: i) into the flowable material moving between the first and second locations; and ii) against the surface assembly; and c) move within the flowable material moving between the first and second locations, thereby to at least one of: i) break loose flowable material adhering to the surface assembly; and ii) agitate flowable material moving between the first and second locations.

Abstract: A fluid dispensing system comprising: a fluid container; a dispensing head in fluid communication with the fluid container; a displacement mechanism which delivers fluid from the fluid container to the dispensing head such that an aliquot of liquid is delivered to a distal end of the dispensing head where the aliquot of liquid is retained; and a pressurized gas displacement mechanism which delivers an aliquot of gas to the distal end of the dispensing head which causes the aliquot of liquid retained at the distal end of the dispensing head to separate from the distal end of the dispensing head.

Abstract: An apparatus for dispensing respectively predetermined quantities of pulverulent contents has a rotatably drivable metering roller containing at least one metering chamber and a material store which stores the pulverulent contents. The metering roller contains at least one lateral line, which is not line-connected to the metering chamber and of which the at least two line ends terminate on the surface of the metering roller. A gas line is guided into the housing and passes out of the housing again in a concave surface region. Gas is introduced into the material store via the lateral line, in dependence on the respective rotary position of the metering roller, through said gas line. Depending upon the rotary positions of the metering roller, the gas line, which fluidizes the contents present in the material store, is closed or opened by the metering roller.

Abstract: An apparatus (10) for handling bulk particulate material (M) includes a reservoir hopper (16) having a gas-permeable liner (42) and a gas inlet (44) connecting the reservoir hopper (16) to a pressurized flow of gas sufficient to fluidize the material (M). A transition and pipe assembly (18) receives a flow of material (M) from the reservoir hopper (16). The transition and pipe assembly (18) has an outer conduit (54), an inner conduit (52), and at least one gas inlet (64). The outer conduit (54) is substantially impervious to gas whereas the inner conduit (52) is permeable to gas. The inner conduit (52) is disposed within and surrounded by the outer conduit (54). The gas inlet (64) connects the outer conduit (54) to a pressurized flow of gas to fluidize the material (M) within the inner conduit (52). A variable orifice non-contact valve (24) controls the flow of material (M) from the transition and pipe assembly (18).

Abstract: A reservoir for powdery media, in particular powder coating, comprises a housing having at least one inlet and at least one outlet for the powdery medium. A fluidising floor of porous, air-permeable material is located in the interior of the housing at a distance from its base. A pressure chamber which is chargeable with compressed air is located between the fluidising floor and the base of the housing. The outlet has the shape of an upwardly open funnel which is located in the lower partial zone of the housing adjacent to the fluidising floor. In this way well-mixed powdery medium the grain-size distribution of which corresponds to the maximum extent to that of the fluidised powdery medium inside the reservoir is always withdrawn.

Abstract: A powdery mold coating agent supply device includes a tank having at its lower portion a discharge port, the tank storing therein an amount of powdery mold coating agent, a supply, tube connected at its upper end portion to the discharge port and extending downwardly along a vertical line, a first open/close device provided in an upper side of the supply tube for the opening/closing thereof, and a second open/close device provided in a lower side of the supply tube for opening/closing the supply tube and placed away from the first open/close device by a predetermined distance.

Abstract: A reservoir for powdery media, in particular powder coating, comprises a housing having at least one inlet and an outlet. A fluidising floor of porous, air-permeable material is located in the interior of the housing at a distance from its base. In this way a pressure chamber which is chargeable with compressed air is formed between the fluidising floor and the base of the housing. In order to reduce the quantity of compressed air required for fluidising and to keep low the mechanical stress imposed on the powdery medium when in the fluidised state, the cross-section of the housing narrows downwardly towards the fluidising floor. In addition, this shape of the housing generates turbulence in the fluidised powdery material.

Abstract: An apparatus attachable to a bag containing a bulk particulate material and having a discharge spout for dispensing material from the bag generally consisting of first and second annular clamping members displaceable axially between a first, spaced apart condition permitting a portion of the spout to be drawn in position therebetween, and a second, adjacent condition clamping the spout portion position therebetween, and means for releasably retaining the members in the clamping condition.

Abstract: A transportable container for fluidizable solids includes a storage container adapted to contain the fluidizable solids is disclosed. The storage container defines an air inlet port for introducing fluidizing air into the storage container and a solids outlet port for discharging the solids from the storage container. A solids outlet conduit may be connected to the solids outlet port for supplying the solids to a downstream process or apparatus. An agitator is provided at the bottom end of the storage container for mixing and maintaining homogeneity of the solids in the fluidizing air. A fluid permeable fluidization membrane is disposed in the storage container below the agitator. The fluidization membrane defines an air chamber below the solids for introducing the fluidizing air into the solids.

Abstract: An apparatus attachable to a bag containing a bulk particulate material and having a discharge spout for dispensing material from the bag generally consisting of first and second annular clamping members displaceable axially between a first, spaced apart condition permitting a portion of the spout to be drawn in position therebetween, and a second, adjacent condition clamping the spout portion position therebetween, and means for releasably retaining the members in the clamping condition.

Abstract: A powdered material spraying device comprising a quantitative spraying device provided for a material discharge port of the powdered material storage hopper via a material feed valve, a cover being provided for the material feed port of the powdered material storage hopper. The spraying device includes a cylindrical body connected with the material discharge port of the powdered material storage hopper, an elastic membrane with a penetrating aperture provided so as to form a bottom of the cylindrical body at its lower opening end, and a dispersion chamber connected under the lower opening end of the cylindrical body via the elastic membrane. The dispersion chamber has a pulsating vibration air supply port for supplying a positive pulsating vibration air to the dispersion chamber and a discharge port. A bypass pipe is connected between the cylindrical body and the dispersion chamber and the powdered material is sprayed from a tip end of a conduit connected with the discharge port of the dispersion chamber.

Abstract: An externally-mounted, quick-acting trigger assembly for firing blast aerators, air cannons, or the like. The trigger assembly is ideal for high temperature applications involving environmental factors such as excessive heat, humidity, and mechanical shock. The trigger comprises a symmetrical, ventilated housing that internally mounts a hollow piston. A plurality of vent orifices are radially disposed about the housing periphery, and normally covered by a resilient band forming a check valve. The trigger piston comprises a generally cylindrical base and an integral, generally conical bottom that is displaced into and out of contact with a mechanical valve seat. An air passageway through the piston is controlled by a deflectable spherical valve element that is captivated within the piston, for selectively blocking air passage through the piston by contacting an internal valve seat. This construction with internal air passageways facilitates trigger function.

Abstract: The present invention provides a fluidized bed for dispensing small quantities of powders. The fluidized bed is made using a porous housing to permit injection and removal of fluid through the surrounding walls to improve the operation of the bed particularly for small particles of the group C size, including significantly reducing powder adhesion to the walls. In one aspect of the invention the fluidized bed housing is rotated about its longitudinal axis, which may be oriented at any suitable angle. A system for changing the volume of the bed is described as is a system for incorporating injection nozzles within the bed for constant agitation and prevention of powder adhering to the walls of the housing.

Abstract: A powder packing apparatus of the present invention is capable of sending a gas uniformly into powder to thereby fluidize the powder with a minimum amount of gas. The gas conveys the fluidized powder to the bottom of a container that may have a small mouth or a sophisticated configuration. The gas present in the powder introduced in the container is released via a powder layer between a nozzle and the mouth. The apparatus can therefore easily, densely pack the container with the powder without causing the powder to fly out of the container. Further, the apparatus is miniature, easy to carry and easy to operate and can therefore be handled by any person at any plate.

Abstract: The present invention is directed to a system and a method to unload bulk powders from large bulk containers. The system and method are particularly useful for unloading bulk cohesive powders.

Abstract: A system for treating waste water includes a dry-feed hopper and a wetting flume for receipt of dry flocculant and waste water. The dry-feed hopper includes a container with a volume of dry flocculant therein. A manifold receives a nozzle connected to an air source to periodically deliver dry flocculant to the wetting flume. An inline static mixer is provided after the wetting flume. The output of the inline static mixer is introduced into an agitation stage via a constricting nozzle which includes a base support and a cylindrical housing with an outer wall and an, inner wall and is resiliently mounted to the top surface of said base support. A downward spiraling length of corrugated hose is positioned between the outer wall and the inner wall. Waste water from the inline static mixer is introducing into the top entry port of the length of corrugated hose to exit at the bottom exit port of the corrugated hose.

Abstract: An externally-mounted, quick-acting trigger assembly for firing blast aerators, air cannons, or the like. The trigger assembly is ideal for high temperature applications involving environmental factors such as excessive heat, humidity, and mechanical shock. The trigger comprises a symmetrical, ventilated housing that internally mounts a hollow piston. A plurality of vent orifices are radially disposed about the housing periphery, and normally covered by a resilient band forming a check valve. The trigger piston comprises a generally cylindrical base and an integral, generally conical bottom that is displaced into and out of contact with a mechanical valve seat. An air passageway through the piston is controlled by a deflectable spherical valve element that is captivated within the piston, for selectively blocking air passage through the piston by contacting an internal valve seat. This construction with internal air passageways facilitates trigger function.

Abstract: An edible foam dispenser, in accordance with the present invention, includes a reservoir forming a cavity, and a liquid including a foaming agent stored in the cavity. A flow device has an inlet coupled to the reservoir and causes the liquid to flow from an outlet of the flow device. An aeration device is connected to the output of the flow device for gasifying the liquid to form an edible foam, preferably a candy foam. A method for dispensing a candy foam is also disclosed.

Abstract: Stucco tower and method for applying ceramic particulates to a ceramic slurry coated pattern involves positioning the ceramic slurry coated pattern in a chamber, discharging ceramic particulates downwardly onto the ceramic slurry coated pattern, and circulating air through air circulation plenums from a lower region of the chamber to an upper region thereof as the ceramic particulates are discharged. An air curtain is provided at an access opening to the chamber.

Abstract: The present invention provides a discharging container whose main part is a squeeze-bottle adapted for use as eyedroppers and transparent to such a degree as required. This container has to perfectly shut off ambient air and bacteria not to flowing into a liquid content of the container so as to keep it sterilized even after unsealed for use.

Abstract: A rigid, one piece nozzle for blast aerators is configured to be mounted in a variety of operating orientations within and upon applications of widely varying shapes and geometry. The generally triangular nozzle comprises a flat base and a spaced-apart, arcuate top, secured to the base by a pair of opposed side walls. An inlet orifice in the flat body portion is internally configured like a truncated cone, and communicates with the nozzle discharge orifice thorough the hollow interior of the nozzle. The inlet is conical to permit the feed pipe to be mated and welded to it once the parts are properly oriented by the installer. An airtight seal results during welding, as the void between the pipe periphery and the circumference the inlet seat the weldment. Because the feed pipe may be fitted to the nozzle at so many angles and orientations, it is suitable for a wide variety of job applications.

Abstract: A method for filling a receiver with expanded fibers includes the steps of feeding at least one bundle of fibers from at least one roving; introducing the at least one bundle into a portable tool having a manual gripping element, a spray nozzle, an air supply device connected for supplying air to the nozzle, an extraction system configured to hold the at least one bundle and feed the at least one bundle to the nozzle, and an inlet guide positioned to guide the at least one bundle to the extraction system; and using the air supply device to expand the fibers of the at least one bundle in said spray nozzle, and spray the expanded fibers into the receiver.

Abstract: The present invention is directed to a system and a method to unload bulk powders from large bulk containers. The system and method are particularly useful for unloading bulk cohesive powders.

Abstract: An edible foam dispenser, in accordance with the present invention, includes a reservoir forming a cavity, and a liquid including a foaming agent stored in the cavity. A flow device has an inlet coupled to the reservoir and causes the liquid to flow from an outlet of the flow device. An aeration device is connected to the output of the flow device for gasifying the liquid to form an edible foam, preferably a candy foam. A method for dispensing a candy foam is also disclosed.

Abstract: A process for introducing a solid catalyst particle feed into a fluidised or agitated vessel utilising a feed delivery device, a vertical feed dilution pipe and a feed injection pipe connected to the vessel, the process including the steps of: (a) introducing the solid catalyst particles feed from the feed delivery device into the vertical feed dilution pipe, (b) diluting the solid catalyst particles feed by letting the solid particle reaching by gravity their terminal velocity in the feed dilution pipe, (c) introducing the diluted solid catalyst particles feed into the injection pipe and mixing it with conveying gas, and introducing the gas conveyed diluted solid catalyst particles feed into the vessel.

Abstract: An aerator pad assembly having an aeration pad with a number of cutouts forming a shaped perimeter, is provided. The aeration pad may include a number of supports providing which provide air flow paths between the aeration pad and an associated aeration panel. A gasket may be disposed about the shaped perimeter, the gasket having a plurality of protuberances with fastener openings included, and the protuberances preferably cooperate with the cutouts to form a generally continuous interface between them. In one embodiment, a notched opening within the gasket is provided at the generally continuous interface with the shaped perimeter at least partially occupying a portion of the notched opening. In a particular embodiment, the gasket may be molded onto the aeration pad. In another embodiment, an adhesive material may be provided to form the attachment. In yet another embodiment, stitches of thread may attach the gasket and the aeration pad.

Abstract: An apparatus for producing foam from a liquid mixture.

Abstract: The present invention relates to a portable device for metering and delivering a desired weight of a cohesive particulate solid material such as pigmentary titanium dioxide.

Abstract: A method and a device for supplying powder to a scattering device, comprising a device for producing negative pressure, a device for producing excess pressure, a powder container for receiving a powder reserve, and a separating device which is located inside the powder container and which separates a quantity of the powder reserve from the remainder in the powder container. The excess pressure device is connected to an air supply device. When the excess pressure device allows the air to strike the quantity of powder which has been separated, the powder forms swirls. The negative pressure device is connected to the powder container in such a way that the swirling powder is conveyed out of the powder container and to the scattering device by the negative pressure.

Abstract: Quick acting blast aerators having rigid accumulation tanks with internal valve assemblies comprising a tubular body, an end cap teat receives air through an inlet controlled by solenoids, and an internal piston that contacts a valve seat during filling, and retracts to expose exhaust vents upon firing. The valve calp comprises a ring groove and an O-ring check valve. An internal dampening passageway vertically extends through the cap. Internal air passageways extend form the passageway to the air-control groove, admitting air into the tank by dislodging the O-ring. The high temperature piston slides between a tank-fill position bearing against the valve seat and a retracted position exposing the exhaust vents. An internal return spring extends between a deep, annular recess in the piston, and a groove formed in the bottom of the end cap. A dampener projecting from the piston is received within the passageway traversing the end cap.

Abstract: The present invention relates to a portable device for metering and delivering a desired weight of a cohesive particulate solid material such as pigmentary titanium dioxide.

Abstract: A grain storage bin has a circular bin floor structure and a cylindrical bin wall upstanding from the floor. A bin aeration system includes a perforated air discharge tube mounted diametrically across the bin supported on a frame above the floor from one side with an air supply duct for supplying air from a fan through the wall. The floor structure is divided diametrically into two separate half sections. A discharge duct extends from a feed opening at a center of the bin horizontally under the horizontal support surface to a discharge outside the wall of the bin with a belt having an upper run along the duct.

Abstract: The powder paint feeder for powder coating directly is installed to a powder paint tank of a fluidized bed type. In the powder paint feeder, a cylindrical screw casing is inserted into the powder paint tank and fixed thereto and has an introducing port into which the powder paint fluidized in the powder paint tank is introduced and a discharging port through which the powder paint dispersed externally of the powder paint tank is discharged. A screw is accommodated in the screw casing and feeds the powder paint introduced from the introducing port to the discharging port while compacting it. A deaerating device is disposed to the screw casing and deaerates the fluidized powder paint to accelerate the compaction of the powder paint. A dispersing blade is mounted on the rotational shaft of the screw in the vicinity of the discharging port downstream of the screw for dispersing the compacted powder paint. A driving device rotates the rotational shaft of the screw.

Abstract: A preassembled fluidizing device that incorporates an expansive air passage that stimulates the enhanced flow of granular materials to the discharge port of a tank trailer, vessel, bin, or other container, during usage. The fluidizing device includes an aerator housing having affixed thereto a wear plate, the upper end of the housing having a mount to which a resilient gasket may be applied, and prestressed against the wear plate, once assembled. A fastening rod extends from the aerator housing and mounting boss, and a positioning or clip secured thereto provides an initial fastening of the preassembled device in place, once installed. A nut or other fastener connects with the opposite end of the fastening rod in order to tightly secure and seal an air distributor in place, for final assembly of the fluidizing device of this invention.

Abstract: A device for propelling confetti or theatrical snow comprising two compartments. One compartment houses a vacuum device having an intake in communication with the other compartment and an exhaust in communication with the exterior of the device. The second compartment holds the confetti or theatrical snow. Only material which is able to be airborne is able to enter the vacuum device and be expelled through the vacuum device. Confetti can be reintroduced into the second compartment without fear of foreign objects mixed with the confetti becoming dangerous projectiles.

Abstract: Device for unloading a pressurized vessel, comprising at least two rotary feeders in series, a valve situated between the reactor and the first feeder, and a point of entry for a gas, that is situated between the valve and the reactor.

Abstract: A preassembled fluidizing device that incorporates an expansive air passage that stimulates the enhanced flow of granular materials to the discharge port of a tank trailer, vessel, bin, or other container, during usage. The fluidizing device includes an aerator housing having affixed thereto a wear plate, the upper end of the housing having a mount to which a resilient gasket may be applied, and prestressed against the wear plate, once assembled. A fastening rod extends from the aerator housing and mounting boss, and a positioning or clip secured thereto provides an initial fastening of the preassembled device in place, once installed. A nut or other fastener connects with the opposite end of the fastening rod in order to tightly secure and seal an air distributor in place, for final assembly of the fluidizing device of this invention.

Abstract: A new particulate applicator attachment for a leaf blower for applying particulates such as powdered pesticides to a lawn or garden. The inventive device includes an elongate main tube having opposite intake and discharge ends. Each of the ends of the main tube has an opening into the lumen of the main tube. The intake end of the main tube is adapted for attachment to a blower tube of a leaf blower such that the lumen of the main tube is in fluid communication with the blower tube. A container for holding particulates is coupled to the main tube. Provided in the lumen of the main tube are intake and outlet conduits. One end of each of the conduits is connected to the container such that the lumen of the main tube is in fluid communication with the interior of the container through the conduits.

Abstract: An open-architecture system for filling and sealing containers in controlled environments. The system provides easy access to containers being processed, and minimizes start-up times and waste. Containers are processed by gas distributors (which may comprise gassing rails) provided in segments and individually movable between operating and service positions. Exhaust plenums are described for improving function of the gas distributors when processing containers. Gas exchange systems including on-demand processors and improved gassing elements are provided. An independent processor is provided to receive, correct and environmentally process defective (e.g. underfilled or overfilled) containers.

Abstract: The apparatus for conveying finely powdered material from a reservoir includes a suction/pressure unit that projects into the reservoir. A gas is introduced into the suction/pressure unit and is mixed with the finely powdered material that is sucked into suction/pressure unit from the reservoir to form a powder/gas mixture and this mixture is discharged. Compressed air blows into the reservoir in a finely dispersed manner to fluidized the finely powdered material so that the extraction of the finely powdered material from the reservoir is facilitated.

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.