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| Number | Title | Issue Date |
| 6971783 | Recycled material and mixing machinery 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 a... | 12/06/2005 |
| 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 |
| 6481883 | Apparatus and method for mixing cementitious materials having a cyclonic disc mixer and weighing means Apparatus for the rapid production of concrete having a grout slurry forming device, a cyclonic mixer for aggregate and a weighing device for feeding weighed amounts of aggregate to the cyclonic mixer. The slurry forming device including, subjecting fine ... | 11/19/2002 |
| 5873653 | Mobile pugmill having a weight metering control system A mobile pugmill accurately mixes an aggregate, an additive and a liquid supplied to a mixing chamber. The pugmill includes a first scale for weighing the aggregate being supplied to the mixing chamber and producing a signal proportional to aggregate weig... | 02/23/1999 |
| 5730523 | Portable concrete plant 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 crus... | 03/24/1998 |
| 5590976 | Mobile paving system using an aggregate moisture sensor and method of operation A mobile paving system (10) is provided that produces paving material while the mobile system (10) proceeds over a surface. The mobile paving system (10) includes an aggregate hopper (12) operable to hold aggregate for use in producing paving material and... | 01/07/1997 |
| 5303998 | Method of mixing and managing oil and gas well drilling fluids A method of mixing drilling fluids at a drill site includes the transportation of sealed silo assemblies that can contain dry products in bulk to the well drilling site. The dry products are maintained within the silo assemblies in a dry and pressurized c... | 04/19/1994 |
| 5044819 | Monitored paving system A paving system (10) is described which comprises an aggregate hopper (12), a mineral filler hopper (14), water tank (16), an emulsion tank (18) and an additive tank (20). Aggregate, mineral filler, water, emulsion and additive are conveyed from their res... | 09/03/1991 |
| 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 |
| 4892410 | Method and apparatus for protective encapsulation of structural members The method and apparatus for forming an encapsulation or encasement about a structural member that is particularly well suited for use in a marine environment is disclosed. A two component polymer system for protective and repair encapsulation is pumpable... | 01/09/1990 |
| 4846580 | Large scale concrete conveyance techniques The disclosure describes a method and apparatus for continuous mixing, transporting and placing of large quantities of concrete in which aggregate transported on a belt conveyor is mixed with metered quantities of cement and water adjacent a place of pour... | 07/11/1989 |
| 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 |
| 4783171 | Loading conveyor for concrete mixer A loading conveyor for a mobile concrete mixing machine is disclosed wherein the conveyor is provided with a receiving hopper for receiving a supply of material from an external source of supply. The chain and slat conveyor is provided with an elevating p... | 11/08/1988 |
| 4781466 | Method and apparatus for producing concrete A method and apparatus for continuously producing concrete at a job site is disclosed wherein the machine is provided with separate aggregate supply bins and a cement supply bin which are arranged in a generally linear fashion on a mobile frame and sized ... | 11/01/1988 |
| 4669886 | Apparatus for preparing a mixture An apparatus for preparing a mixture, such as mortar, with predetermined quantities by weight of the components, such as sand, cement and the like, a supply of which is present in container compartments 4, 5 of e.g. hopper 1. The container compartments ar... | 06/02/1987 |
| 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 |
| 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 |
| 4395128 | Mixing tower for concrete or the like A mixing tower for concrete or the like has a series of superimposed prefabricated modules which are connected to one another and include a cylindrical lowermost module, a frustoconical intermediate module with several outlets which is integral with the t... | 07/26/1983 |
| 4391528 | Silo system for mixing stored material A silo for mixing dried and powdery materials such as cement. A number of discharge apertures positioned at different places at the bottom of a mixing silo are connected by conduits to a common receptacle such as an homogenizing silo. A flow control gate ... | 07/05/1983 |
| 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 |
| 4387996 | Batch method of recycling asphaltic concrete A batch method of producing asphalt-aggregate composition having a temperature of at least about 200° F. and at least about 20% used asphaltic concrete comprises heating solid particles of the used material in a first drum to a temperature of at least ab... | 06/14/1983 |
| 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 |
| 4285598 | Concrete mixing apparatus A concrete mixing machine is disclosed which mixes small batches of concrete using any desired ratio of gravel, sand, cement, and water. The dry materials are mixed into concrete at the site where the concrete is to be poured. The apparatus includes hoppe... | 08/25/1981 |
| 4269798 | Method for producing a curable, filled resin composition, e.g., artificial marble A filler material and a heated, catalyzed synthetic resin are sequentially introduced into a mixer. The mixer has a conveying section and a mixing section. The resin and filler are introduced into the conveying section, which forces the combined resin and... | 05/26/1981 |
| 4219279 | Mobile gunnite material mixer A mobile gunnite material mixer comprising a vehicle having a first load carrying portion for housing a supply of sand, a second load carrying portion separate from the first load carrying portion for housing a supply of cement, a mixing apparatus spaced ... | 08/26/1980 |
| 4205919 | Mixer for and method for mixing particulate constituents A mixer especially for mixing materials such as cement and sand with water and with a fibrous reinforcing material such as glass fibre. The mixer consists of a tubular casing containing a skeletal rotor constructed from a plurality of rods extending longi... | 06/03/1980 |
| 4096588 | Recycled asphalt-aggregate process and apparatus In a process for recycling asphalt and aggregate containing composition, the improvement comprises separating the composition into a plurality of portions having different particle sizes, ranging from coarse to fine, introducing the particle portions into... | 06/20/1978 |
| 3995837 | Apparatus for mixing foundry materials A final mixing chamber for mixing together previously separately prepared mixtures of foundry sand/binder and foundry sand/catalyst which are delivered to the upper end of the final mixing chamber having a discharge aperture in its lower end and a vertica... | 12/07/1976 |
| 3938673 | Portable concrete batch plant A concrete batch plant designed and constructed for transport to the site wherein the concrete is to be used, said plant being disposed in a substantially horizontal position during transport thereof and in a substantially vertical position during operati... | 02/17/1976 |
