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| Number | Title | Issue Date |
| 8083510 | Concrete finishing machine A machine for imprinting patterns onto uncured concrete in an elongated bed includes a frame for positioning the finishing machine over the bed. A lower patterning unit suspended from the frame is movable backward and forward of the concrete bed and a press assembly... | 12/27/2011 |
| 7806676 | Automated concrete casting system A system for automating the casting of concrete panels in which a bed position indicator is fed to a program which compares the bed position to CAD drawings concerning the concrete to be cast and sends the drawing detail for the position of the bed which is then sho... | 10/05/2010 |
| 7216462 | Insulated concrete panel billets Improved premolded foam billets and drop-in foam billet joints increase the R value in concrete panels. ... | 05/15/2007 |
| 7198429 | Segmented concrete screed A segmented concrete screed for screeding concrete on a concrete casting bed includes a plurality of individual screed units each of which may be raised and lowered independently of the others such that screeding operations may selectively bypass obstructions in the... | 04/03/2007 |
| 7191999 | Variable height sideforms An improvement to concrete casting machines of the casting bed type in which the side forms are constructed and arranged to stay in an upright position at all times but may be raised and lowered. ... | 03/20/2007 |
| 6955014 | Insulated concrete cast panels with voids in billits A method for casting hollow core concrete panels includes the use of raft connectors to hold a plurality of spaced foam billets in place during the manufacture to create panel or plank with spaced foam-filled cores. The panels include billets that form longitudinal ... | 10/18/2005 |
| 5318426 | Brick imprinting apparatus A device for forming panels of cast concrete having simulated mortar lines. The device rests above a casting bed on the beds rails. As the bed moves relative to the device, the movement is translated to a shuttle and press mechanism that descends into the... | 06/07/1994 |
| 4943219 | Hollow core concrete extruder An improved slipform for use in a machine for casting hollow core concrete planks includes at least one angled baffle plate in the core material receiving ports so as to deflect the core material from directly impacting the lower concrete. This lessens th... | 07/24/1990 |
| 4893859 | Concrete slab lifting clamp A device for lifting long, heavy concrete panels including clamping heads having diamond crystals bonded to the facing region to minimize slippage at the clamp head/concrete interface.... | 01/16/1990 |
| 4644727 | Strand chair for supporting prestressing cable and cross-mesh in elongated precast concrete plank The chairs include a lower chair portion for supporting multiple prestressing cables at the bottom of a plank and a narrow upper chair portion for supporting an upper prestressing cable located in the web between the hollow cores of the prestressed plank.... | 02/24/1987 |
| 4628653 | Insulated concrete panel An insulated concrete panel utilizing interlocking sheets of insulation material sandwiched between two layers of concrete. The insulation material sheets are interlocked utilizing a symmetrical partial dovetail locking structure permitting subsequent she... | 12/16/1986 |
| 4457682 | Machine for casting concrete members A machine for casting concrete panels. The machine disclosed casts hollow core concrete panels in a single casting operation utilizing a slipform technique to fill cores with core material which can be dumped from the core after curing of the concrete has... | 07/03/1984 |
| 4416842 | Directed cracking in concrete panel manufacture A method of manufacture in which the formation of unsightly stress cracks in sandwich-like panels of prestressed concrete are prevented by the formation of a "contraction joint" at selected locations in the panel's outer layer of concrete during its manuf... | 11/22/1983 |
| 4369153 | Machine for casting concrete members A machine for casting concrete panels. The machine disclosed casts hollow core concrete panels in a single casting operation utilizing a slipform technique to fill cores with core material which can be dumped from the core after curing of the concrete has... | 01/18/1983 |
| 4329184 | Rock aggregate core material washing and recycling A process and system for recovery and recycling of hard rock core forming aggregate used in the slip forming of elongated hollow-cored concrete planks using wash water to remove slurry and a rotating screen to remove the water from the aggregate with coll... | 05/11/1982 |
