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| Number | Title | Issue Date |
| 7572048 | Apparatus for highly controlled color distribution in mass produced concrete products An apparatus for highly controlled color composition and distribution within the face mix of semi-dry concrete mix paving stones is disclosed. ... | 08/11/2009 |
| 7341661 | Clarification and sorptive-filtration system for the capture of constituents and particulate matter in liquids and gases A sorptive-filtration system for removing at least one of negatively or positively charged ions, complexes or particulates from an aqueous stream. The system includes a) flow formed substantially from at least one of rainfall-runoff or snowmelt-runoff; b) a filter c... | 03/11/2008 |
| 7290612 | Apparatus and method for reverse circulation cementing a casing in an open-hole wellbore The present invention is directed to an apparatus and method for reverse circulation cementing a casing in an open-hole wellbore. The apparatus includes a surface pack-off device, which has a housing defined by an upper section and lower section. A load bearing plat... | 11/06/2007 |
| 7255223 | Mixture with a smooth throughput A transport device for transporting a transportable product, especially a bulk-type product, includes an essentially cylindrical chamber containing at least one shaft which extends along the cylindrical chamber and comprises a plurality of first transport elements f... | 08/14/2007 |
| 7225932 | System units for treatment of aggregate material An aggregate storing and classifying mechanism for production of asphalt in plants, comprising a body (2) having plurality of circular sections (6) arranged in a manner of substantially surrounding the body (2) for storing aggregate material com... | 06/05/2007 |
| 7204304 | Removable surface pack-off device for reverse cementing applications A removable surface pack-off device adapted for use in reverse cementing applications is provided. The device includes a housing adapted to be mounted between the ends of an inner casing and an outer casing at or near the surface of a well and at least one fluid pas... | 04/17/2007 |
| 7178972 | Recycled material mixing machine A machine for combining powder material with cohesive site-won spoil has an input hopper which provides a preliminary breaking up step. Some lime is added from a lime feeder as the material is transported to a pan mixer. During transport a rotavator acts on the cohe... | 02/20/2007 |
| 7104142 | Systems and methods for automating asphalt mix design Systems and methods are disclosed for automating asphalt mix design by running one or more tests on the mix design using computer controlled equipment; digitally collecting data for each run using the computer controlled equipment; and selecting an optimum mix based... | 09/12/2006 |
| 7050886 | Chemical dispensing system for a portable concrete plant 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... | 05/23/2006 |
| 7013971 | Reverse circulation cementing process A method of cementing a casing in a wellbore with a tool having a plurality of holes therethrough connected at a lower end of the casing. The total cross-sectional area of the holes is preferably greater than the cross-sectional area of the inside of the casing. A p... | 03/21/2006 |
| 6955506 | Device for pneumatic conveying of bulk material, especially granular material A device for pneumatically conveying bulk material has at least one flow limiter arranged in a conveying airstream. The flow limiter has a housing and at least one control member arranged in the housing. The control member controls a flow velocity of the conveying a... | 10/18/2005 |
| 6948535 | Apparatus and method for accurately metering and conveying dry powder or granular materials to a blender in a substantially closed system The present invention is directed to an apparatus and method for accurately metering and conveying a dry powder or granular material to a blender in a substantially closed system. The apparatus includes a storage tank adapted to hold the dry powder or granular mater... | 09/27/2005 |
| 6945686 | Method for dosing reinforcing fibres for the manufacturing of fibre concrete and the chain packing used A method for dosing reinforcing fibers in a mixing silo during the manufacture of fiber concrete. The reinforcing fibers as supplied in a chain packing of sacks. The sacks may be made of material which can be disintegrated in mortar or concrete. The chain packing in... | 09/20/2005 |
| 6929393 | Asphalt production plant An asphalt production plant includes an asphalt binder storage tank, a mixer for mixing asphalt binder and aggregate materials, an asphalt binder pumping system for conveying asphalt binder to the mixer and an asphalt binder metering system for controlling the rate ... | 08/16/2005 |
| 6923565 | Process and equipment for producing concrete products having blended colors A process and equipment for producing multi-color concrete products, including architectural concrete blocks, concrete bricks, modular concrete products that are suitable for use in landscaping applications, such as retaining wall blocks, concrete pavers, and concre... | 08/02/2005 |
| 6905048 | Volumetric solid and liquid dispenser 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 s... | 06/14/2005 |
| 6486475 | Method and apparatus for determining liquid absorption of aggregate A method of determining liquid absorption of an aggregate comprises providing a sample of the aggregate, adding liquid to the sample, subjecting the sample to a light source signal, monitoring a light reflected signal reflected from the sample and control... | 11/26/2002 |
| 6223871 | Cable drum with integrated frequency converter A cable drum has a rotating winder fitted in a mounting and a frequency converter fitted on the winder. At least one socket outlet of the winder is electrically coupled to the frequency converter and is supplied with an electrical spatial frequency. The i... | 05/01/2001 |
| 6183123 | Fiber additive concrete manufacturing method A method of manufacturing concrete with a fiber additive and other ingredients including the steps of mechanically manipulating a shipping container (36) having a gross amount of fiber additive (50) substantially greater than the an amount susceptible to ... | 02/06/2001 |
| 6120173 | System and method for providing raw mix proportioning control in a cement plant with a gradient-based predictive controller A system and method for providing raw mix proportioning control in a cement plant with a gradient-based predictive controller. A raw mix proportioning controller determines the correct mix and composition of raw materials to be transported to a mixer. The... | 09/19/2000 |
| 6120172 | System and method for providing raw mix proportioning control in a cement plant A system and method for providing raw mix proportioning control in a cement plant. A raw mix proportioning controller determines the correct mix and composition of raw materials to be transported to a mixer. The raw mix proportioning controller uses an in... | 09/19/2000 |
| 6113256 | System and method for providing raw mix proportioning control in a cement plant with a fuzzy logic supervisory controller A system and method for providing raw mix proportioning control in a cement plant with a fuzzy logic supervisory controller. A raw mix proportioning controller determines the correct mix and composition of raw materials to be transported to a mixer. The r... | 09/05/2000 |
| 6085912 | Apparatus for sorting and recombining minerals background of the invention An apparatus for separating a mixture of mineral particles and recombining the mineral particles in an alterable, controlled fashion to create a plurality of products each having a predetermined, desired particle size distribution.... | 07/11/2000 |
| 5971600 | Transportable apparatus for combining waste material with a stabilizer material A transportable apparatus for intimately combining a waste material with a stabilizer material comprises a first reservoir for receiving, containing, and discharging a waste material. The first reservoir has an inlet for receiving the waste material, an i... | 10/26/1999 |
| 5810470 | Device and method for mixing mortar with a specific ratio of sand, cement and water A mixing device (1) having at least two concentric tubular elements (2, 3) including an outer tubular element (2) and an inner tubular element (3) inside the outer tubular element, the outer tubular element and the inner tubular element each supplying a l... | 09/22/1998 |
| 5803596 | Method and apparatus for high capacity production of finished aqueous foam with continuously adjustable proportioning An apparatus for continuous production of finished foam material, in which the proportions of the constituents are monitored and continuously adjustable during operation of the machine. The liquid components are metered by positive-displacement, progressi... | 09/08/1998 |
| 5795060 | Method and apparatus for continuous production of colloidally-mixed cement slurries and foamed cement grouts An apparatus for high capacity production of high-fluidity, colloidally mixed cement slurry. Water and cement dust are combined at metered rates by a premixing assembly which discharges into a mixing tub. The high-speed, high-shear pump recirculates the m... | 08/18/1998 |
| 5785421 | Mobile modular concrete batch plant 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 provi... | 07/28/1998 |
| 5653533 | Apparatus and method for introducing liquid additives into a concrete mix A concrete mixing system includes reservoirs of liquid additives, where the additives are combined with concrete mix to add desired properties thereto. These reservoirs of liquid additive are connected to a storage chamber and a controller which controls ... | 08/05/1997 |
| 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 |
| 5452954 | Control method for a multi-component slurrying process A method of controlling a continuous multi-component slurrying process at an oil or gas well comprises continuously flowing substances for creating a slurry in response to a slurry flow rate factor and continuously flowing another substance for the slurry... | 09/26/1995 |
| 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 |
| 5215372 | Aggregate storage apparatus for use in producing asphaltic mix An asphaltic mix batch apparatus which comprises a tower which mounts a number of aggregate storage bins, a weigh hopper underlying the storage bins, and a pugmill underlying the weigh hopper. Also, a screen assembly is positioned above the bins for segre... | 06/01/1993 |
| 5186538 | Core and molding sand preparation apparatus with adjustable mixing blade A molding sand preparation apparatus of the mixing-bowl type is suitable for preparing face sand or back sand without structural modification. The apparatus includes sand hoppers and resin and catalyst tanks as well as pumps, controls and the like for mea... | 02/16/1993 |
| 5149192 | System for mixing cementitious construction materials A system which includes method and apparatus for the delivery of cementitious materials to a construction site using a transportable machine, a truck with an extensible crane, a containment frame, and transport cement silos that are carried by the truck a... | 09/22/1992 |
| 5118197 | Process for mixing two liquids An apparatus and a process for mixing water from a pressurized source and an additive or admixture for a cementitious composition in a mixing chamber comprising introducing, in the form of a jet, water under a first pressure, which is above atmospheric pr... | 06/02/1992 |
| 5098666 | Device for metering at least two flowable reaction components into a mixing chamber In a device for metering at least two fluid reaction components into a mixing chamber, flexible displacement elements (1, 2; 47, 48, 49, 50) are provided in each container chamber (43, 44, 45, 46) which divide each container chamber (43, 44, 45, 46) into ... | 03/24/1992 |
| 4997284 | Concrete and mortar distribution process and apparatus Process and apparatus are provided to distribute specified, premixed quantities of dry mortar mix and cement to a construction site. Bulk bags and a hopper apparatus are transported to the construction site and utilized with a forklift and a mixer device.... | 03/05/1991 |
| 4963031 | Cement slurry batcher apparatus and process A novel process and apparatus for discharging, on a batch basis, cement and water as a slurry or in the form of separate discharges of slurry and cement, where the materials so discharged contain a predetermined amount of water and a predetermined amount ... | 10/16/1990 |
| 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 |
