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| Number | Title | Issue Date |
| 6340240 | Drum mixer having isolated aggregate transport channels A drum mixer for heating, mixing and drying an aggregate material, such as a mixture of recycled asphaltic pavement and virgin aggregate. The drum mixer includes an inclined drum having a first end and a second end. The drum forms a pre-heating/blending s... | 01/22/2002 |
| 6302265 | Fold-over conveyor assembly A conveyor assembly having upper and lower truss portions includes a hinge mechanism structurally arranged to be secured to the upper truss and lower truss portions. Rotational movement of the hinge mechanism lowers the lower truss portion while simultane... | 10/16/2001 |
| 6267493 | Drum mixer having a plurality of isolated aggregate transport channels A drum mixer for heating, mixing and drying an aggregate material, such as a mixture of recycled asphaltic pavement and virgin aggregate. The drum mixer includes an inclined drum having a first end and a second end. The drum forms a pre-heating/blending s... | 07/31/2001 |
| 6234713 | Vibrator truss assembly A vibrator assembly is described for use with a concrete paving machine moveable longitudinally along a body of poured concrete. The paving machine includes a machine frame and a finishing carriage unit moveable transversely back and forth across the body... | 05/22/2001 |
| 6149342 | Anti-bridging mechanism An anti-clogging or anti-bridging mechanism is disclosed which is structurally arranged to engage the nozzle ports in a cutting housing to seal the ports from pulverized road bed material. The mechanism further includes cable members which facilitate move... | 11/21/2000 |
| 6110430 | Decontamination plant including an indirectly heated desorption system The present invention is a decontamination plant for removing contaminates from contaminated material. The decontamination plant comprises an outer shell including a cavity therein. A drum formed of heat conductive material is rotatably mounted in the cav... | 08/29/2000 |
| 5881959 | Materials grinder with infeed conveyor and anvil A materials grinder includes a rotary grinding drum and a shear bar cooperating with the grinding drum to grind various types of materials. The shear bar is mounted on a pivotal structure adjacent the materials grinding drum. A displaceable biasing member... | 03/16/1999 |
| 5827360 | Method and equipment for producing foam bitumen The invention relates to a method and equipment for producing foam bitumen. Water is mixed to hot bitumen under a pressure which is lower than the prevailing absolute pressure, and after this the pressure is allowed to rise and the flow rate to drop. The ... | 10/27/1998 |
| 5791815 | Vibrating compactor assembly for use with a concrete finishing machine A concrete finishing machine includes a surfacing unit having two finishing cylinders and two augers mounted in line with the two cylinders, a pair of compacting rollers located on either side of the augers and suspended by a frame which is attached to th... | 08/11/1998 |
| 5788755 | Method and equipment for producing foam bitumen The invention relates to a method and equipment for producing foam bitumen. Water is mixed to hot bitumen under a pressure which is lower than the prevailing absolute pressure, and after this the pressure is allowed to rise and the flow rate to drop.... | 08/04/1998 |
| 5588776 | Paving machine having automatic metering screed control A paving machine having a sensor-controlled concrete metering screed. The machine includes hydraulic cylinders which move the metering screed to various elevations to control the depth of concrete being metered out by the screed. At least one ultrasonic s... | 12/31/1996 |
| 5558882 | Pipe paver finishing machine A pipe paver finishing machine is disclosed for applying and finishing concrete lining onto the interior surface of a lower segment portion of a drainage pipe. The machine includes a chassis member adapted for movement longitudinally along the interior of... | 09/24/1996 |
| 5425923 | Thermal soil remediation system A system for remediating soil containing contaminants. The system comprises a rotary volatilizer, a thermal dust conductor, a soil cooler, a separator and an afterburner. The rotary volatilizer includes a rotatable, counterflow volatilizer drum with a dry... | 06/20/1995 |
| 5405212 | Paving machine with drop-then-stop dowel bar insertion A paving machine having a medially located dowel bar feeder positioned in front of a dowel bar inserter. The machine has a screw or paddle for spreading the concrete and a front strike-off to allocate a proper amount of unconsolidated concrete beneath the... | 04/11/1995 |
| 5388927 | Raiseable pan drag apparatus A pan drag device is disclosed for attachment to a concrete finishing machine movable longitudinally along an elongated body of poured concrete, with the finishing machine having a finishing unit engageable with the surface of the poured concrete and mova... | 02/14/1995 |
| 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 |
| 5342124 | Mixer having blades arranged in a discontinuous helical pattern A mixer having an elongated housing with an upper wall, a curved lower wall, an inlet end and a discharge end. A rotatable shaft within the housing extends from the inlet end to the discharge end of the housing. A plurality of blades are attached to the s... | 08/30/1994 |
| 5326214 | Method and apparatus for handling a cutter or the like A handling and transporting apparatus having a lifting and lowering frame supported by hydraulically actuated parallelograms at each end from transporting frames.... | 07/05/1994 |
| 5318377 | Paving machine with midline dowel bar insertion A paving machine having a medially located dowel bar feeder positioned in front of a dowel bar inserter. The machine has a screw or paddle for spreading the concrete and a front strike-off to allocate a proper amount of unconsolidated concrete beneath the... | 06/07/1994 |
| 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 |
| 5201839 | Countercurrent drum mixer with second heat source An asphalt production system utilizing a pair of rotatable drums for producing an asphaltic composition is provided. The asphaltic composition is produced by separately heating a volume of virgin aggregate material in a countercurrent drum dryer and heati... | 04/13/1993 |
| 5190454 | Electronic combustion control system An apparatus and method for adjusting the air-fuel ratio of a burner in order to minimize the presence of undesirable emissions in exhaust gases of the burner combustion. A burner calibration is performed by selecting a number of calibration points corres... | 03/02/1993 |
| 5108010 | Storage silo with improved material flow An improved silo for storing materials which are composed of particles of varying sizes. Rectangular receiver openings are located in an upper floor at the upper end of the silo and rectangular discharge openings are located at the lower end of the silo. ... | 04/28/1992 |
| 5000615 | System for reclaiming and relaying pavement in place A system for removing and relaying asphaltic concrete pavement using a planer pulling a laydown machine and pushing equipment for (a) screening the cuttings produced by the planer, and (b) mixing the screened cutting, with a suitable binder, wherein the m... | 03/19/1991 |
| 4995758 | Center bar inserter A center bar inserter having a frame for supporting a plurality of forks for pivotal movement about a horizontal axis is provided. Insertion of a center bar is preformed by simultaneously extending the forks into the concrete slab while the forks pivot ab... | 02/26/1991 |
| 4993869 | Concrete finishing machine with vibrating finishing rollers A concrete finishing machine includes a surfacing unit having one or more finishing rollers supported on the surfacing unit carriage by a finishing roller vibrating assembly which includes a frame supporting the finishing rollers at one end and on which i... | 02/19/1991 |
| 4989986 | Double counter flow drum mixer A drum mixer is provided for producing an asphaltic composition. The drum mixer utilizes a first heat source located at an intermediate position within the drum mixer for producing a first current of hot gases directed towards the entry end of the drum mi... | 02/05/1991 |
| 4982832 | Ceramic tile conveyor An improved ceramic tile conveyor is provided having a pair of guide plates extending substantially the length of the conveyor. The guide plates provide an impact barrier protecting the ceramic tile from damage caused by contact with the revolving flights... | 01/08/1991 |
| 4957221 | Air tight storage silo A improved silo is provided having a pair of pivoting receiver gates overlying a pair of receiver openings and a pair of pivoting discharge gates overlying a pair of discharge openings. A deformable seal is secured to the silo between the receiver opening... | 09/18/1990 |
| 4957433 | Drum baffle A plurality of variable pitch baffles for diffusing hot combustion gases flowing through an asphalt drum mixer is provided. Each baffle, which is internally mounted at an intermediate location within the drum mixer, includes a plurality of opening thereth... | 09/18/1990 |
| 4928890 | Apparatus and method for producing cold mix asphalt An apparatus to be towed behind a roadway planing machine to mix aggregate planed from a roadway into cold mix asphalt for repaving the roadway. The aggregate is introduced, via an inclined shaker screen, into a surge bin and conveyed from the surge bin t... | 05/29/1990 |
| 4917560 | Twin bin self erect silo A portable, self erect silo for hot mix asphalt having two, side-by-side bins. A single drag slat conveyor directs hot mix asphalt into either bin by use of a single slug feeder pivotally attached to the discharge end of the conveyor.... | 04/17/1990 |
| 4910540 | Countercurrent asphalt drum dryer/mixer A drum mixer having a internal combustion gas cylinder extending substantially the length of the drum mixer is provided. Hot combustion gases are generated by a flame within the cylinder. The combustion gases within the cylinder flow in a countercurrent d... | 03/20/1990 |
| 4775262 | Concrete finishing machine with vibrating compactor unit A concrete finishing machine includes a surfacing unit having two finishing cylinders with two augers mounted in line with the two cylinders, and a pair of compacting rollers located on either side of the augers, suspended by a frame which is attached to ... | 10/04/1988 |
| 4708520 | Concrete finishing machine with adjustable auger unit A concrete finishing machine includes two finishing cylinders with two augers mounted in line with the two cylinders, forward ends of the augers being suspended by a frame which is pivotally attached to the cylinder support frame and rearward ends of the ... | 11/24/1987 |
| 4700804 | Seismic energy source A hydraulically controlled seismic energy source for impressing individual seismic energy pulses into the ground, wherein the hydraulic pressure forcing the ram downwardly is substantially reduced slightly before the ram contacts the ground, and a continu... | 10/20/1987 |
| 4637753 | Road planar having particle reducing means A road planar which includes a secondary cutter in the planar behind the primary cutter with grids between the primary and secondary cutters and following the secondary cutter to size and cooperate with the secondary cutter in reducing the particle size o... | 01/20/1987 |
| 4335921 | Cutting head for a paved roadway resurfacing apparatus A cutting head for a paved roadway resurfacing apparatus comprising a support block having a shoulder and a cutter having a shoulder mating with the shoulder on the support block to prevent rotation of the cutter with respect to the support block.... | 06/22/1982 |
| 4326750 | Gate assembly and control assembly therefor An improved gate assembly and gate control assembly for operatively controlling the movement of the gate assembly in material discharging equipment is provided wherein the gate assembly comprises a first and second clamshell gate member, a connecting asse... | 04/27/1982 |
| 4325580 | Roadway planing apparatus A planer apparatus for cutting a selected upper portion of a roadway surface to coincide with a preselected reference plane, comprising a main frame drivingly supported by a drive assembly, the main frame carrying a planing assembly comprising a rotating ... | 04/20/1982 |
