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| Number | Title | Issue Date |
| 7320539 | Concrete batching facility and method A concrete batch mixing system and method are disclosed that enable the batch master to measure and control both the water and cementitious ingredient feeds in relation to each other so as to be able to blend the two ingredients in a known, selected, adjustable and ... | 01/22/2008 |
| 7271237 | Method of drying a material having a cohesive phase A method for drying a material such as a polymer hydrogel which passes through a cohesive phase as it dries is disclosed. The method comprises agitating a composition while removing liquid until the solids content of the composition reaches a level at which the comp... | 09/18/2007 |
| 7270469 | Apparatus and method for adding pigmentation to concrete mix A pigmentation dispenser utilizes a hopper having two rotors therein, a first rotor above a second rotor. The second rotor moves the pigmentation material through an outlet opening and deposits it on a conveyor containing a concrete mix. The concrete mix and pigment... | 09/18/2007 |
| 6876904 | Portable concrete plant dispensing system 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 cont... | 04/05/2005 |
| 6568842 | High capacity mobile lime slaker A continuous preparation of calcium hydroxide slurry can be made on a mobile apparatus that uses an eductor to initially combine metered flows of calcium oxide and water. The calcium hydroxide slurry is retained in a deaerating sump and then pumped into a... | 05/27/2003 |
| 6042259 | Admixture dispensing and concrete mixer monitoring system An admixture dispensing and concrete mixer monitoring system which determines the correct amount of admixture, such as a stabilizer, to dispense in a load of unused concrete or for washing out a concrete mixer includes an admixture dispensing unit linked ... | 03/28/2000 |
| 5667298 | Portable concrete mixer with weigh/surge systems 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 mat... | 09/16/1997 |
| 5609416 | Portable continual mixer A small batch mixer particularly suited for preparing small quantities of mixture blends dry powdered material with an aggregate and a liquid. The ingredients may be cement, sand, and water. The batch mixer has two screw augers. The first auger feeds dry ... | 03/11/1997 |
| 5580166 | Cement pump for a wet spray system In a concrete pump for wet spraying, in which standard concrete is pumped to a mixing jet, compressed air and if necessary a hardening accelerant are mixed into the concrete stream, which is applied with the jet and compressed; it is the purpose of the in... | 12/03/1996 |
| 5507572 | Method and apparatus for supplying a continuous product stream of lime slurry to a remote jobsite A method and apparatus for providing a continuous product stream of lime slurry to a job site which is located remote from a permanent lime production plant utilizes a primary and auxiliary tank which are mounted on a portable frame structure. Lime and wa... | 04/16/1996 |
| 5470147 | Portable continual mixer A portable continual mixer blends dry powdered material with an aggregate and a liquid. The ingredients may be cement, sand, and water. The batch mixer has two screw augers. The first auger feeds dry mix into an elongated mixing chamber, and has its own e... | 11/28/1995 |
| 5470146 | Countercurrent drum mixer asphalt plant A drum mixer asphalt plant is provided with a rotatable cylinder 10 in which virgin aggregate, recycle material and liquid asphalt are mixed to produce an asphaltic composition and the hot gas stream for heating and drying the materials flow in countercur... | 11/28/1995 |
| 5433521 | Batcher plant for producing ready-mixed concrete A batcher plant for producing ready-mixed concrete is miniaturized by disposing, side by side on a trestle, a cement-paste making unit with cement measuring means and a stationary cement-paste mixer and an aggregate processing unit with fine and coarse ag... | 07/18/1995 |
| 5383725 | Asphalt/dust/rubber processing equipment A closed, pressurized apparatus for introducing aggregate dust and rubber into a stream of liquid asphalt is provided. Aggregate dust and rubber are dispensed through a valve from a receiving chamber into a mixing housing. The aggregate dust and rubber en... | 01/24/1995 |
| 5213414 | Mixing apparatus The apparatus allows mixing of a solid and a fluid continuously to facilitate downhole operations, especially gravel packing. The apparatus comprises a solids hopper, with preferably an internal auger, to meter the solids flowrate. The solids drop into a ... | 05/25/1993 |
| 5209563 | Dust return system A closed, pressurized dust return system for introducing aggregate dust into a stream of liquid asphalt is provided. Aggregate dust is dispensed through a valve from a receiving chamber into a mixing housing. The aggregate dust enters the mixing housing a... | 05/11/1993 |
| 5137365 | Water metering system for concrete mixer A water metering system for a concrete mixing truck includes a secure pulsing type cold water meter connected to meter water applied to the mixing drum of the truck. The meter pulses an electrically resettable counter mounted in a secure housing in the ca... | 08/11/1992 |
| 4968349 | Method for producing hardened cement mineral material, especially concrete, and an apparatus for implementation of the method The invention concerns a method for producing a hardened mineral product, especially concrete. The method utilizes a hydration reaction with water for at least 1 hour, preferably for 4 to 40 hours, by producing a water/binding agent paste containing compo... | 11/06/1990 |
| 4940334 | Reverse flow mixing method for direct-fired asphaltic concrete drum mixers A reverse flow post-mixer attachment for direct-fixed asphaltic concrete mixers includes a modified discharge box for the downstream end of the drum and an enclosure for the downstream portion of the drum forming a passage along the exterior of the drum. ... | 07/10/1990 |
| 4922463 | Portable volumetric concrete mixer/silo A modularly constructed, trailerable, skid mounted, multi-compartmented concrete mixer and cement storage silo having a plurality of longitudinally aligned, bottom mounted, driven feed chains. In a combination construction, a single motor is cooperatively... | 05/01/1990 |
| 4838701 | Mixer A mixer suitable for mixing a particulate material with a liquid. The mixer has a particulate material conduit, and a volute chamber disposed about the conduit. The volute chamber has a liquid inlet and an open lower end through which the particulate mate... | 06/13/1989 |
| 4832497 | Method and an apparatus for mixing gravel and bitumen A method and an apparatus for mixing gravel materials and bitumen. The gravel material is mixed with a bitumen emulsion by causing the gravel material to fall onto an inclined screen (12) separating coarse gravel particles (G) from fine gravel particles (... | 05/23/1989 |
| 4830505 | Particle wetting process and apparatus A method of mixing particulate cement and water in a primary mixing vessel to form a slurry batch, includes introducing a measured quantity of water into the vessel, introducing a measured quantity of particulate cement into the vessel, agitating the wate... | 05/16/1989 |
| 4813784 | Reverse flow post-mixer attachment and method for direct-fired asphaltic concrete drum mixers A reverse flow post-mixer attachment for direct-fixed asphaltic concrete mixers includes a modified discharge box for the downstream end of the drum and an enclosure for the downstream portion of the drum forming a passage along the exterior of the drum. ... | 03/21/1989 |
| 4795264 | Arrangement for concrete production in tunnels A concreting train consists of a plurality of wagons supporting a mixer, a multiple conveyor arrangement and separate containers for cement and aggregate. A container for cement has at least one integrated conveyor worm. All container wagons are provided ... | 01/03/1989 |
| 4792234 | Portable concrete batch plant The invention comprises a mobile concrete batch plant transportable by highway as a single unit. A cement storage hopper, a cement weigh hopper, and an aggregate weigh hopper are mounted on a standard trailer bed. The cement hopper is loaded to the desire... | 12/20/1988 |
| 4624575 | Cement mobile mixer A cement mobile mixer for mixing concrete from sand, aggregate, cement and water.... | 11/25/1986 |
| 4586824 | Mobile concrete mixing apparatus A mobile concrete mixing apparatus comprising an aggregate storage bin and cement storage bin mounted on a mobile carrier in spaced relation, a water supply tank mounted on the carrier and in operable communication with a water discharge pipe disposed in ... | 05/06/1986 |
| 4506982 | Apparatus for continuously blending viscous liquids with particulate solids An apparatus for continuously blending a viscous liquid, such as hot asphalt, with particulate solids, such as ground rubber, includes a vertical cylindrical tank in which is disposed a smaller vertical vessel defining therein a blending chamber. Open low... | 03/26/1985 |
| 4492478 | Method and apparatus for applying mortar or concrete One of ingredients of green concrete are supplied to a rotary disc through a central tube by a pump or low pressure air and the other ingredient is supplied to the rotary disc from a hopper by a screw conveyor. These ingredients are mixed together on a ro... | 01/08/1985 |
| 4491414 | Fluid mixing system A fluid agitating apparatus is disposed in a vessel containing a body of fluid to be agitated. The fluid agitating apparatus includes a housing having an inlet at an open lower end thereof, and an outlet at an open upper end thereof, with a flow passage d... | 01/01/1985 |
| 4475817 | Mixer for mixing fibres into a slurry A mixer for mixing glass fibres into a relatively dilute aqueous cement slurry, e.g. for use in forming glass fibre reinforced cement products on an asbestos-cement making machine of the Hatschek or Bell type, comprises an annular chamber with a tangentia... | 10/09/1984 |
| 4415267 | Apparatus for mixing and application of paving compositions An apparatus for mixing an additive with molten paving material and for application of the resultant paving composition. The apparatus includes a mixing mechanism in heat transfer relationship with a heated materials tank for recirculatingly moving molten... | 11/15/1983 |
| 4406548 | Mobile concrete mixing apparatus A mobile concrete mixing apparatus comprising an aggregate storage bin and cement storage bin mounted on a mobile carrier in spaced relation, a water supply tank mounted on the carrier and in operable communication with a water discharge pipe disposed in ... | 09/27/1983 |
| 4390281 | Slurry gun A method and apparatus for the mixing of fly ash and a wetting agent to obtain a slurry for the ultimate disposal of fly ash. The apparatus is a slurry gun having an introduction chamber, the wetting agent being introduced horizontally into the chamber un... | 06/28/1983 |
| 4329063 | Foundry sand mixing machine An apparatus for inhibiting the gross build up of a cold setting foundry sand mixture in a mixing machine in which a fluid inhibitor is discharged into the machine while the machine is substantially empty to prevent or retard the setting of the foundry sa... | 05/11/1982 |
| 4322167 | Method for making asphalt-rubber pavement compositions A method and apparatus for mixing molten asphalt and granulated rubber including an asphalt input system and a rubber input system for delivering the molten asphalt and the granulated rubber in accordance with predetermined mixture proportions to a two-st... | 03/30/1982 |
| 4304493 | Sand mixer A foundry sand mixer for mixing and dispensing silica or green sand and their additives through the enclosed longitudinal belt conveyor mechanism having a plurality of openings in the top communicating with a first feeder disposed above the enclosed longi... | 12/08/1981 |
| 4298288 | Mobile concreting apparatus and method A mobile concreting apparatus and method which may be used, in particular, for on-site construction of swimming pools. It includes a vehicle supporting a plurality of containers, each adapted to contain one of the ingredients of concrete. Each container i... | 11/03/1981 |
| 4285599 | Apparatus for preparation of fluidized sand A characteristic feature of the invention lies in that a container for each liquid component, incorporated in a sand machine, is provided with an actuator intended for effecting forcible opening of the container spring-loaded valve, a device for controlli... | 08/25/1981 |
