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| Number | Title | Issue Date |
| 7175333 | Method for delivery of bulk cement to a job site A method for delivering a pre-weighed package comprising sand, aggregate and dry cement to a mixing site comprises the steps of preparing a first mixture comprising fine aggregate and coarse aggregate at an offsite plant. The first mixture is placed into a first sto... | 02/13/2007 |
| 5893639 | Apparatus for producing and simulataneously distributing cement mixes and the like Apparatus for distributing and producing cement mixes, substantially concrete, using an endless conveyor belt movable at the base of separate containers which contain the inert materials and the cement, and a reservoir for the mixing water, to form propor... | 04/13/1999 |
| 5624183 | Apparatus for metering and mixing aggregate and cement Portable metering and mixing apparatus includes a trailer having a hopper thereon divided into two compartments, one compartment for aggregate and another compartment for cementitious material. An auger receives aggregate from one compartment and feeds ag... | 04/29/1997 |
| 4932785 | Aggregate drying system with improved aggregate dryer and mass flow apparatus This invention relates to an improved aggregate drying apparatus and method where the dried aggregate is particularly useful for making hot mix asphalt. In accordance with the system, heat typically lost in exhaust gases and moisture evaporated in a heate... | 06/12/1990 |
| 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 |
| 4268175 | Tractor mounted self-loading concrete mixing apparatus Tractor mounted mixing apparatus is disclosed including a mounting frame attachable to a three-point tractor hitch, a mixing drum rotatably mounted to the frame and having mechanism for rotatably driving the drum, and a scoop pivotally connected to the su... | 05/19/1981 |
| 3989230 | Slab extruding machine A plurality of spaced and parallel auger assemblies are supported in cantilever fashion and extend rearwardly from a bearing housing. These auger assemblies in conjunction with a packing chamber and concrete hopper, extrude a longitudinally apertured slab... | 11/02/1976 |
