Abstract: A rigid cover attached to the chute of a cement truck can prevent the accidental discharge of cement residue from the chute of the cement truck while the truck is moving. The use of a rigid cover prevents the bending of the cover under the weight of the cement residue. The rigid cover can be attached to an over-chute portion of the chute such that when the over-chute rests upon the main chute, the rigid cover can be positioned to prevent the accidental discharge of cement from the chute or can be flopped on top of the over-chute. The rigid cover is designed to hold back a substantial amount of cement residue.

Abstract: A mixing element comprises a cylindrical passage pipe through which a liquid flows, and a plurality of blade bodies disposed inside the passage pipe. The blade bodies forms inside the passage pipe a plurality of fluid passages extending spirally and in a longitudinal direction of the passage pipe. And, a gap between the blade bodies forms an opening for communicating the fluid passages to each other. These spiral blade bodies are produced independently to the passage pipe, after that, they are joined to an inner face of the passage pipe. Thus produced fluid fixer has an extremely high mixing-agitating effect.

Abstract: A system and method for mixing particulate cement with mineral aggregate(s) so as to minimize the formation and escape of dust. The system involves dispensing aggregate(s) downwardly from a hopper and simultaneously dispensing the cement particles from a tube within the aggregate hopper above the hopper opening. The cement particles adhere to moisture on the surface of the aggregate(s).

Abstract: A powder hopper with an internal air assist is provided with at least one vertically extending tube having a plurality of air outlet ports which are utilized in agitating the powder within a powder chamber. According to a first embodiment, the vertically extending tubes are rotated about a central axis. According to a second embodiment, the vertically extending tube is divided up into a plurality of zones which are sequentially provided with pulses of compressed air, thereby providing an equivalent air agitation rotating action without the requirement of rotating the vertically extending tube.

Abstract: A system for transportation of sludge material comprising an elongated tank having an arcuate bottom portion extending longitudinally of the tank and having a withdrawal port located in the arcuate bottom portion of the tank. An elongated conveyor system is disposed in the tank and comprises inner and outer auger flights mounted in the tank an axle extending longitudinally of the tank. The auger flights transcend only a minor cross sectional area of the tank and are configured to have opposing pitch slopes. The outer auger flight provides a positive pitch angle in the direction of the withdrawal port to displace sludge material toward the withdrawal port. The compound conveyor system embodies inner and outer auger flights as described previously in which at least the outer auger flight is in the form of a ribbon which is spaced axially from the axle on which it is supported and is wrapped around the axle in a manner in which the inner diameter of the ribbon flight is spaced radially from the axle.

Abstract: In a multi-shaft worm machine comprising a plurality of worm shafts rotating in the same or in opposite directions, at least one worm fitting (6) is positively connected to the associated worm shaft (3), while a countertwisting element (7) is supported in a freely rotatable manner on the opposing worm shaft portion and is driven in the opposite direction of rotation by the worm shaft (3) of the positively connected worm fitting 6.

Abstract: A bag-holder and an extraction machine for enabling extraction of a substance for preparation of a beverage contained in a pliant bag having at least one linear edge weld. The bag-holder has a housing configured to provide a cavity for containing the bag and an area which provides a grid of raised and indented elements and flow holes, the grid area providing for tearing the bag and for flow of extract from the housing during extraction. The bag-holder also has provision for securing the edge weld of the bag to keep the bag in the holder. The bag-holder also contains a bore in the area of the outflow grid for accepting a hollowed needle therethrough for penetrating into a bag for introducing extraction fluid into the bag and wherein the needle, during extraction, extends from an extraction machine which also has a part for, upon placement of the bag-holder together with the extraction machine, enabling sealing the part and the holder.

Abstract: An improved vertical feed mixer has a mixing chamber defined by a floor, a sidewall, and an open upper end through which feed material, such as hay bales, is loaded into the chamber. A vertically disposed auger with tapered flighting is rotatably mounted within the chamber for cutting, mixing, and discharging the feed material through a discharge opening near the bottom of the chamber. A plurality of grader blades extend outwardly from the auger shaft in close proximity to the bottom wall of the mixing chamber, thereby pushing mixed feed outwardly through the discharge opening a plurality of times during each revolution of the auger, thereby providing increased uniformity of the discharge flow of material into a feed bunk or trough. A primary deflector extends along the perimeter edge of the flighting adjacent the leading edge thereof. The secondary deflectors are spaced along the perimeter edge of the flighting.

Abstract: A hydraulic system employing multi-phase hydraulic fluids in which a first phase hydraulic fluid has its properties modified by the addition of a second phase hydraulic fluid is described. Effective hydraulic actuation is achieved in a single system under extreme conditions, typically high and low temperatures.

Abstract: The method involves preceding the infusion of the coffee with a stage in which the coffee powder is soaked (preinfused) with a gradual increase in the pressure. The improvement located on the delivery pipe of an espresso coffee machine, immediately upstream of the infusion group, is a pressure damping device. This allows improved imbibition by the coffee powder during the "infusion" stage, i.e. the stage that precedes the actual dispensing of the espresso coffee.

Abstract: A plastic materials screw has a metering section defined by a series of axially extending discontinuous and partially overlapping flightings. The flightings overlap each other by about a half to one turn to define overlapping portions whereby the flow in the primary channel is divided into a pair of secondary flow channels which have velocity profiles normal to the channel root greater than that in the primary channel. At the end of the overlapped portion, the first flighting is discontinued and the second flighting continues with a result that the flows are recombined in a distributive manner to provide improved mixing with a minimum of additional shear stress.

Abstract: A low cost dry polymer processing system has an inverted submersible pump with a weir mounted on top of the pump housing and over an impeller in the housing. The weir is a combination of a sleeve and a coaxial funnel with a top edge of the funnel that is level with respect to gravity. An electrolyte liquid rising in the sleeve overflows the top edge of the funnel in order to form a liquid curtain uniformly covering the inside wall of the funnel. The amount of liquid is limited so that the impeller is not hydraulically locked. Dry polymer is dropped through the funnel and into the eye of the impeller. Thereafter, the remainder of the polymer processing is carried out by any suitable means.

Abstract: A wine bottle aerator that includes a power control box, a stopper means, a submersion rod, and an aeration element. The aerator is affixed in a wine bottle, or any bottle desired by a user, by the stopper. The stopper includes vents to allow air flow from the interior of the subject bottle into the atmosphere. In use, the aerator is used to aerate a bottle of wine as follows: The aerator is fitted into the opening of the subject bottle. The submersion rod extends the aeration element to a position near the bottom of the bottle, so that it is completely submerged. When the aerator is activated, the pump draws air in through the air inlet into the pump. The pumping action then forces the air out of the pump through the air outlet and into the submersion rod. The air flows through the submersion rod and into the aeration element. The air then flows outward into the wine through the air holes in the aeration element. Pressure is not increased to a dangerous level in the interior of the bottle due to the vents.

Abstract: An apparatus for receiving and transporting material mixed in internal mixers used for processing rubber mixtures. At least one mixer is provided that has a discharge opening at the bottom. A closure that is pivotable about a horizontal axis is provided for opening and closing the discharge opening. At least one receptacle is adapted to be disposed below the discharge opening of the mixer for receiving mixed material from the mixer. After a receptacle has received mixed material from the mixer, and prior to closure of the closure, a receptacle is withdrawn in a closure direction of the closure.

Abstract: A carbonated beverage dispensing system includes a carbonation bowl 1 having a chamber 2 with a frusto conical upper part 4. Water is admitted to the chamber 2 as a mist through nozzle 7 and CO2 is admitted to the chamber through inlet 8 to provide a carbonated water reservoir. Carbonated water is driven under pressure of CO2 in the headspace of chamber 2 through a metering unit 42 and mixed at 27 with beverage syrup for dispensing through tap 29. When the dispense system is dormant a microprocessor 70 actuates pump 13 to introduce water which raises the level of the reservoir into the frusto conical part 4 so that the surface area of the reservoir exposed to the CO2 is reduced to alleviate excessive absorption of CO2 by the water in the reservoir. The system may be applied for post mix of carbonated water with beverage syrup or to pre-mix of beverage syrup with un-carbonated water and which mixture is subsequently carbonated.

Abstract: The invention relates to an assembly kit for a filter coffee maker as an attachment to an electrical espresso machine, which is adapted to make filter coffee of good taste in simple manner.

Abstract: A continuous mixer in which the rotors used to mix the material are composed of a rotor shaft, and a plurality of rotor segments fitted onto said rotor shaft. The plurality of rotor segments can be removed from the shaft and replaced by rotor segments of differing specifications to produce a rotor of a different shape and specifications in accordance with any change in the kind of mixing conditions required.

Abstract: In injection of steam, gas or liquid into a fluid product in an injection apparatus having a substantially disc-shaped rotor (5) and having a central product inlet (10) and a peripheral product outlet (11), the injection is carried out in a limited zone (13) above the disc-shaped rotor (5) at a distance from both said inlet (10) and said outlet (11), the fluid product being also exposed to a radial displacement effect and a tangential dispersion effect. The fluid product may be a liquid with considerable variation of dry solids content and viscosity. The injection apparatus comprises at least one cylindrical wall (7, 8) projecting upwards from the disc-shaped rotor (5), which wall projects between coaxial cylindrical walls (14, 15) projecting downwards from an overlying stator cover (9).

Abstract: A magnetic stirrer wherein a relatively weakly magnetised disposable stirrer bar inside a closed container, for example a stirrer bar moulded wholly of non-isotropic ferrite, is moved with a stirring action from outside the container by a relatively powerful magnetic driver, preferably consisting of a pair of permanent magnets of neodymium boron driven in rotation as an assembly.

Abstract: The coffee machine has a water reservoir located in a housing, a heating device having electric regulating devices, a beverage collecting vessel which can be placed on a housing base, and a coffee brewing housing which is arranged above the beverage collecting vessel. The coffee brewing housing which can be swivelled out of the coffee machine housing is secured in the working position at the coffee machine housing by a manually actuated hold-back device which is spring-loaded in the locking direction. To enable a reliable triggering of the swiveling movement of the coffee brewing housing after it has been unlocked from the housing of the coffee machine without the use of spring elements which cause an undefined swiveling movement, the hold-back device is coupled with a push bar which acts on the coffee brewing housing in the swiveling out direction and is guided at the housing.