Abstract: A syringe-to-syringe coupling for facilitating the transfer of fluids or medications from a first syringe to a second syringe. In example embodiments, the coupling includes a centrally-positioned hub extending from a first end to a second end, and a fluid delivery conduit provided within the hub and extending between the first and second ends. In example forms, each end of the hub includes a male tip.

Abstract: Mixing apparatus includes a batch mixing vessel with an inlet to receive constituent material, an agitation assembly for mixing the constituents and an outlet to convey batches of the mixed is provided. The apparatus includes a pressurizing device for pressurizing the vessel to assist in evacuation of the mix, and a conduit through which the mix is conveyed. A single pneumatic source is used both to pressurize the mixing vessel and to drive a jet pump including the batch loader. During the mixing cycle, the compressor used to discharge the finished mix is generally idle. This compressor can be used during these periods to drive a jet pump to load the mixing vessel. Therefore, manual loading is avoided and can be achieved such that the mixing cycle time is not interrupted.

Abstract: The disclosure relates to a portable system for distributing building materials comprising a motor vehicle which can be in the form of a truck. Disposed on a flat bed of the truck is at least one container coupled to the motor vehicle. The container can include at least one stirrer wherein the stirrer is for stirring a first component in the container. There can be at least one mixer coupled to the motor vehicle wherein the mixer is for mixing at least one liquid component with the component in the container to form a slurry. Once the slurry is formed, it can be fed to at least one distribution feeder which is then used to feed materials to a job site. This system can include a computer for controlling the mixer, and the distribution feeder to control the distribution of this slurry material. The disclosure can also relate to a process for creating the dry mixture, the slurry and then distributing this slurry so as to create a building component such as a floor.

Abstract: A computer controlled pumping and measuring system is used to dispense chemicals into a concrete mix. The redundant use of positive displacement pumps and flow meters ensure that any problems with the chemical dispensing are immediately caught. The computerized control system may be operable to control exact batch configurations of concrete and aggregate in conjunction with the chemical dispensing, as well as provide precise mixture control and recording of the various components.

Abstract: The invention relates to a transportable concrete mixing plant (10) which comprises a plurality or releasably interconnected mixing plant components. Said mixing plant components are contained in a plurality of containers (C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13), during transport. At least part of said containers (C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13), preferably all of said containers, are standard ship containers or can be assembled to standard ship containers. Said standard ship containers meet the international standards for uniform transport. In the operational state of the mixing plant (10), said containers represent the support structure for mixing plant components and/or containers for concrete starting materials.

Abstract: A volumetric solid and liquid dispenser includes a drum sized for receiving and containing a predetermined volume of solid material from a solid material supply source. The supply source can be a hopper positioned above the drum. The drum is rotatably mounted to a support frame and can be rotated from a position in which it receives solid material from the supply source to a dispensing position in which it dispenses the solid material into a receptacle below. A liquid metering and dispensing container dispenses a predetermined volume of liquid into the receptacle for mixing with the solid material. The invention is particularly useful for dispensing predetermined volumes of sand and water into a cement mixer for mixing with mortar.

Abstract: The present disclosure provides a blender apparatus that can be used to prepare a slurry from carrier fluids and solids. In a preferred embodiment, the blender includes a mixing tub system, a fluids intake system, a solids intake system and a slurry delivery system. The fluids intake system preferably includes a first intake pump and a second intake pump that independently or cooperatively draw fluids into the blender. The slurry delivery system preferably includes a first discharge pump and a second discharge pump that independently or cooperatively delivery slurry from the mixing tub system.

Abstract: Site-won spoil from an excavation which is a predominantly non-granular cohesive material can be converted into a material suitable for immediate use as a backfill material by a process of mechanically mixing the spoil with between 0 and 30% by weight or volume of added granular material and between 1 and 10% by weight or volume of a powder material comprising 1-5% lime or with the additon of 1-5% cement and/or 1-5% pulverised fly ash. The process works well with clay soils and the range of suitable spoil can be extended by adding cement to the powder material. The proportions in the mixture are chosen in dependence on the clay and moisture content of the spoil. A machine which can be set to mix the ingredients and water in the correct proportions on site is also described.

Abstract: The present disclosure provides a blender apparatus that can be used to prepare a slurry from carrier fluids and solids. In a preferred embodiment, the blender includes a mixing tub system, a fluids intake system, a solids intake system and a slurry delivery system. The fluids intake system preferably includes a first intake pump and a second intake pump that independently or cooperatively draw fluids into the blender. The slurry delivery system preferably includes a first discharge pump and a second discharge pump that independently or cooperatively delivery slurry from the mixing tub system.

Abstract: An improved oil and gas well servicing apparatus for blending and delivering a slurry of fracturing fluid and particulate matter at constant flow rate and pressure to a downhole pump is disclosed. Multiple blending tubs are mounted on a trailer or skid and are manifolded together in a slurry discharge manifold. The slurry discharge manifold combines the slurry discharged by the blending tubs and incorporates pipe sections of equal length to connect the blending tubs to the manifold. It is believed that the slurry discharge manifold and equal length piping provide balanced pressure drop between the individual blending tubs and creates a constant outlet pressure from the slurry discharge manifold. A fluid intake manifold may also be included to distribute fracturing fluid to the blending tubs. Hose connectors on each of the manifolds are provided on both sides of the apparatus for convenient operation from either side.

Abstract: A batching module for a mobile batching plant includes an open three dimensional frame with first and second end cells defined therein and a third intermediate cell defined between the end cells. A plurality of interchangeable batching apparatus are provided for removable installation within the cells. A reversible conveyor is mounted within the frame and extends between the ends thereof to convey materials deposited thereon from the batching apparatus to either the first or second end of the frame. Length extensible support legs are mounted to the batching apparatus frame to permit selective height adjustment of the frame above the ground. The legs are telescopically mounted within vertical hollow support posts of the frame for selective retraction completely within the frame posts. Either mobile mixers or stationary mixers may be positioned under the first and second cells to receive product from the batchers and conveyor.

Abstract: A portable concrete plant that can be transported on a single vehicle to a construction site consists of a transporting vehicle, a rotating drum for mixing the concrete, containers for sand and crushed rock, a scale for weighing a mixture of sand and crushed rock, a conveyor for conveying the mixture of sand and crushed rock to the rotating drum, a container for portland cement, a conveyor for conveying the portland cement to the rotating drum, a source of water, and a concrete pump for dispensing the concrete from the rotating drum. A fly ash container and a second scale for weighing fly ash may also be on the vehicle. The entire apparatus may be controlled by a computer which controls the various containers and scales so as to vary the proportions of sand, crushed rock, fly ash, portland cement, and water in the rotating drum to produce concrete of varying strength. The entire apparatus has dimensions which meet the length, width and height requirements for vehicles moving on the highways.

Abstract: An improved concrete mixing plant is mounted on several mobile chassis to provide portability. The plant includes a horizontally oriented, internally urethane coated mixing drum having spiral and lift flights such that the rate of discharging concrete material is controllable without altering the direction or rate of rotation. The drum and chute are self-erecting from a low-profile, transport configuration to an elevated, mixing configuration. A water dispensing system wherein the water is automatically measured volumetrically or, alternatively, gravimetrically provides automatic cleaning of internal surfaces of the mixing drum as an integral part of the batching process. Feeder belt and weigh-bridge arrangements are interposed between bins containing denser ingredients and a collecting conveyor to provide a first surge capability. A hopper and load cell arrangement is interposed between a compartmented silo and a surge conveyor to provide a further surge capability.

Abstract: A designated amount of recycled asphalt product (RAP) is fed to the pugmill of a batch asphalt plant during the production of hot mix asphalt (HMA) at a controlled rate so as not to overload the pugmill scavenging system. The designated amount of RAP is metered in a RAP weigh hopper, stored temporarily in a RAP holding hopper, and is then fed from the RAP holding hopper to the pugmill at a controlled rate. The feed of RAP to the pugmill, though electronically initiated, is preferably manually or automatically adjustable so as to avoid overloading the pugmill scavenging system while at the same time assuring adequate mixing of the RAP with the virgin aggregate and liquid asphalt. The scavenging system directs vapors removed from the pugmill to the dryer and preferably includes electronically operated dampers connecting the combustion air inlet of the dryer to the pugmill only during the mixing operation and otherwise connecting the combustion air inlet to the ambient atmosphere.

Abstract: A flooring material applicator having a frame and wheels rendering it moveable about a floor, a mixer chamber and agitator to mix flooring material, a first component receptacle movably mounted adjacent the mixer chamber and moveable between a first loading position, and a second dumping position, a second component receptacle movably mounted adjacent the mixer chamber, and moveable between a first loading position and a second dumping position, a distribution opening in the mixer chamber, and a door movably operable to open and close the same, a distribution chamber adjacent the door, to receive flooring material therefrom, a motor for operating the agitator, the first component receptacle, the second component receptacle, and the door, and controls for guiding the applicator about a floor, so as to spread the flooring material on a floor.

Abstract: The invention comprises a mobile trailer having a frame with a set of wheels on the frame for hauling the trailer and a pair of storage bins on the frame in side by side spaced relation with one bin adapted to a receive peat with a mixing blade to mix the peat and the other bin adapted to receive sand. The bins have openings along their bottoms and connecting openings along their vertical front walls with vertically adjustable plates to vary the sizes of the vertical openings. Horizontal conveyors are mounted beneath the bottom openings to the bins. Collecting and mixing blades are in the front of the trailer and a rotating spreader mounted to the rear upper portion of the trailer. An inclined conveyor is mounted with its lower end beneath the mixing blade and its upper end above the spreader.

Abstract: A drum mixer which is useful in the continuous production of asphalt paving composition. The mixer includes a hollow drum which is mounted for rotation about an inclined axis, and the aggregate is introduced into the upper end of the drum so that as the drum rotates, the aggregate cascades through the interior of the drum and moves toward a discharge outlet at the lower end of the drum. A burner is mounted adjacent one end of the drum so that a heated gas passes through cascading aggregate. To permit the temperature of the exhaust gas to be maintained within acceptable limits so as to avoid detrimental effects to a downstream filtering baghouse, a gas flow bypass system is mounted in the downstream end portion of the drum.

Abstract: An asphalt production plant which is adapted to process mixtures of recycled paving and aggregate, and which comprises a rotary drum dryer for heating and drying stone aggregate, and an elevator for conveying the heated and dried aggregate to an elevated discharge location. A batch tower is positioned adjacent the elevator, and the batch tower comprises an aggregate sizing screen which receives and segregates the aggregate by size, and several underlying aggregate storage bins, with each aggregate bin receiving aggregate of predetermined average size from the sizing screen. Also, a recycle bin is positioned between and in alignment with the aggregate bins. A weigh hopper is provided for receiving the aggregate and/or recycle material from the bins, and a pugmill is positioned below the weigh hopper for mixing the material with hot liquid asphalt and then delivering the resulting mix into an underlying truck.

Abstract: A portable concrete batch plant which may be pulled from one location to another and which may be used either as a transit mix batch plant or a central mix batch plant. The batch plant is mounted on a wheeled frame comprised of a rear frame section and a front frame section removeably secured thereto. The batch plant is transported from one location to another with the rear and front frame sections connected together. If the batch plant is desired to be used as a transit mix plant, the front and rear frame sections remain connected together. If it is desired to use the concrete batch plant as a central mix batch plant, the front and rear frame sections are separated with the front frame section being spaced horizontally and vertically from the rear frame section with an extension conveyor being positioned there between.

Abstract: An apparatus and method for controlling the production of foamed material in which the material and foam are delivered to a mixer (12) in predetermined relative proportions. The apparatus comprises a mixer (23) for mixing a foam solution and air together, and a foam generator (26) for conditioning the air and foam solution mixture and delivering the resultant foam to the mixer. The foam generator (26) comprises a plurality of foam generating chambers connected in parallel, valves (28) being provided to control the flow of air and foam solution mixture through each of the generator chambers. The volume flow rate at which foam is delivered to the mixer (12) is monitored, and the valves are controlled to direct the air and foam solution mixture through one or more of the generator chambers in dependence upon the volume flow rate such that the flow velocity of the air and foam solution mixture within the chamber or chambers is within predetermined limits.

Abstract: The portable continuous mixing device of the present invention comprises a first upper frame adapted to drop the dry concrete ingerdients into the upper end of a hopper. The ingredients drop out of the lower end of the hopper onto a second conveyor which deposits the dry ingredients into the input end of a continuous auger mixer. Water and admix are also added to the input end of the auger mixer and the mixer mixes all of these ingredients and discharges them from a discharge end.

Abstract: A process and apparatus for the preparation of mortar from an aggregate and a binder is disclosed which comprises the use of a silo provided with at least one partition so as to create in the silo two or more compartments for the separate storage of the aggregate and the binder, the compartments being provided with conveyor screws, the speeds of which can be adjusted to control the volumetric flow of the components to a mixing chamber. When the desired amounts have been dispensed, the remaining materials may be stored indefinitely for layer use. The silo compartment for the aggregate may be provided with a heating element to safeguard the mechanically operated slide valve against freezing. The conveyor screw in the outlet for the binder may be provided with a cam and a plunger rod with transverse projections to prevent arching in the compartment for the storage of the binder.

Abstract: Disclosed are a method of and an apparatus for producing a heated reproduction asphalt mixture, in which a new material and a normal-temperature waste material, the water content of which is set at a limited range of values, are adapted to be mixed together in the ratio of (90 to 40):(10 to 60) in terms of weight. The temperature of heating the new material by means of a dryer is controlled to range from 190.degree. C. to 350.degree. C. so as to be in conformity with the above mixing weight ratio. Both the materials are mixed and kneaded together in a mixer at a kneading temperature of 150.degree. C. or more. The gas generated within the mixer is exhausted toward a chimney in a state wherein the amount exhausted is made adjustable.

Abstract: An auger swivel for a concrete mixer includes a channel mounted to a bowl. A center member is pivotally connected to a pivot point near the channel and near an outer surface of the bowl. The center member includes a pair of first wings that extend from the pivot point, opposite each other and away form the bowl. Two slides are received in the channel and are positioned away from each other by a ring. Two second wings are provided. One of the second wings is pivotally connected to one of the first wings at one of its ends and pivotally connected to one of the slides at its other end. The other second wing is similarly connected to the other first wing and the other slide. An actuator rotates the center member about the pivot point and causes the slides to rotate around the outer surface of the bowl and about a longitudinal axis passing through the bowl.

Abstract: A mixing plant suitable for mixing of particulate material of different densities such as road base materials with the addition of water or other liquid. The mixing plant includes a receptacle for particulate materials and a mixing station or pug mill. There is provided first conveying means suitably in the form of a conveyor belt for conveying particulate material from the receptacle to the mixing station. There is also provided a container for finely divided material which may act as a binding agent or stabilizer for the particulate material.There is also provided a second conveying means such as a conveyor belt for conveying finely divided material to the mixing station. There is also provided means for adding water or other liquid to the finely divided material and the particulate material at the mixing station.There is also provided a collection station or discharge station and means for transporting the mixed materials from the mixing station to the collection station.

Abstract: In a concrete production system, an improved aggregates conveying apparatus includes an aggregates drag conveyor having a lower, conveying run which drags aggregates along a centrally-located, common trough shared by separate fine and coarse aggregates hoppers to a discharge end and an upper, return run which moves through a hollow channel formed in a common wall separating the hoppers above the common trough. An improved cement metering apparatus in the system includes a cement conveyor mounted along a trough below the cement hopper so as to make an endless path around a floor of the trough. Baffle gates at each end of the floor coact with the conveyor to prevent inadvertent flow of cement past the ends of the floor and to only permit metered flow of the cement from the discharge end of the trough. The fine and coarse aggregates, and the cement discharge into a mixing auger where, after water is added, they are mixed into concrete before discharge from the auger.

Abstract: The invention relates to concrete mixing plant suitable for weighing and mixing at least two aggregate materials and cement inside a concrete mixer comprising a container to collect aggregate, weighing and/or dosing scale, a worm-screw to deliver cement, a concrete mixer or mixing machine means whereby the whole is borne by a plurality of legs and/or supports possibly to sustain a silo holding cement, and an elevator wheel suitable for receiving and premixing the aggregates, the wheel being located between the container collecting aggregate and the concrete mixer suitable for receiving the aggregates and cement.

Abstract: The metering device of the present invention comprises a cylindrical housing having a circular top wall and a circular bottom wall. The top wall has an inlet opening therein and the bottom wall has an outlet opening therein. The outlet opening and the inlet opening each comprise only a portion of the area of the top and bottom walls, respectively.A metering wheel is rotatably mounted within the housing and includes a plurality of pockets circumferentially spaced around its rotational axis. The pockets include open upper and lower ends. A horizontal cover plate is attached to the housing above the metering wheel so as to close off the portion of the inlet opening which is located directly above the outlet opening. The material to be metered drops through the inlet opening and is carried by the rotating pockets of the metering wheel toward the outlet opening. When the material reaches the outlet opening it drops by gravity out of the metering device.

Abstract: Apparatus is provided for blending large batches of particulate polymers that are compositionally heterogeneous into batches that are compositionally uniform. The apparatus consists of a plurality of horizontally aligned cylindrical storage bins, a common feed line for feeding particulate polymer to each of the storage bins, and conveying means running under each of the storage bins to receive particulate polymer discharged from the bins. Each bin contains six or more vertically aligned partition walls that extend radially from the midpoint of the bin to the wall to divide the bin into at least six storage compartments of substantially equal volumetric capacity. The vertical partition walls differ in height in a regular descending order so that as material is charged to and fills one compartment, it overflows the shorter wall to fill the adjacent compartment. Upon being discharged from the bin, the contents of the several compartments of the bin are mixed to provide a more homogeneous batch of particles.

Abstract: A method and apparatus are disclosed which reduce smoke emissions in an asphalt drum mixer. A drum mixer heats virgin aggregate to a relatively high temperature in a first drying zone. Virgin asphalt and, in some cases, recycled pavement material containing asphalt, are added in a second zone. Mixing and discharge of the materials occur in a third zone. The invention provides for air or water cooling of the gases in the drum mixer upstream of the point of entry of the asphalt. This cooling reduces the formation of smoke which would otherwise be generated by excessive heating of the asphalt. The apparatus, according to a preferred embodiment, employs an axially positioned air duct, the outlet end of which discharges cooling air into the drum just upstream of the area of entry of the recycled material.

Abstract: A process and apparatus for the continuous preparation of a molding mater comprising a granular and/or pulverulent charge agglomerated by a binder-hardener system are disclosed. An intimate and homogeneous pre-mix is formed by malaxation of the charge and only one of the binder-hardener system components, to the mixture is then added the second binder-hardener component into a thin film malaxation apparatus, the mixture is malaxated as a thin film for a few seconds and then is discharged at its point of end use.

Abstract: In an apparatus for heating and mixing asphalt-aggregate composition in a rotating cylindrical drum by contact with a plurality of elongated heating tubes extending along the drum interior, the improvement comprises introducing coarse particles of the composition at a relatively cool end or area in the drum and introducing smaller sized composition particles in a relatively warmer area of the drum.

Abstract: A continuous mixer includes a hopper for depositing sand on a conveyor belt, an adjustable striker for controlling the quantity of sand, a bentonite bin and a rotary feeder for controlling the quantity of bentonite deposited on the conveyor belt and a plurality of mixing units through which the conveyor passes each with a pair of rotating paddle wheels for lifting the sand and bentonite off the belt and vigorously mixing it in a chamber. A spray manifold and moisture supply and regulating means are provided for adding moisture to the mixture at a predetermined rate.

Abstract: Apparatus for the preparation of mortar has a wheel-mounted frame for an elongated vessel which receives metered quantities of solid and liquid constituents from discrete feeding units. The vessel has an outlet and contains a rotary homogenizing and evacuating device which mixes the solid and liquid constituents to form mortar and advances the mortar toward and through the outlet. Mortar issuing from the outlet of the vessel can be discharged into a separate container which is mounted in or on the frame and is connected with one or more evacuating pumps, into wheelbarrows or into the container of a conventional mortar mixing machine. The feeding unit for solid constituent may receive material by gravity flow or under the action of a rotary screw in a receptacle which is mounted in the frame at a level above the vessel and receives solid constituent from a pneumatic conveyor.

Abstract: An improved asphalt-aggregate recycling process includes heating asphalt-aggregate composition by direct exposure to hot gases of combustion to form a gaseous exhaust mixture of carbon dioxide, water vapor and hydrocarbon volatiles from the heated asphalt, subjecting the gaseous mixture to a centrifugal force sufficient to separate the mixture into a first layer comprising a major amount of the hydrocarbon volatile condensate particles, and a second layer comprising a major amount of the carbon dioxide and water vapor. The first layer containing the condensed hydrocarbon volatiles is then separated out and preferably directed to a hydrocarbon burner as fuel for heating the asphalt-aggregate composition. The improved apparatus improves means for centrifugally physically separating the hydrocarbon from the gaseous mixture.

Abstract: In an apparatus for heating and mixing asphalt-aggregate composition in which composition particles are exposed directly to hot gases of combustion, a plurality of lifters are secured around the drum interior surface adjacent the input end of the apparatus where flame and hot gases of combustion are supplied, opposite the output end, and a space is provided between the lifter surface and the interior drum surface, whereby coarse composition particles are alternately lifted and dropped by the lifters as the drum rotates, and any fine composition particles pass along the space between the lifter and drum interior surfaces. In another embodiment, a barrier plate is provided across the hollow drum interior, and having peripheral edge spaced apart from the drum interior surface, and behind which plate fine composition particles are introduced.

Abstract: This invention relates to apparatus for making ready-mixed concrete, comprising a plurality of transfer containers divided into separate chambers and adapted to be moved along a closed path to at least one filling station and a plurality of emptying or waiting stations, respectively, for temporarily containing cement, filling materials and possibly, water separately from one another and for transferring these materials to concrete mixer trucks, particularly to mixer trucks provided with positive mixing tools.