Abstract: A method of preparing an asphalt edge for joining and a two part joint heating system for use in carrying out the method. In it most basic form, the method of the present invention includes the steps of placing a first layer of asphalt in a roadway and allowing the first layer of asphalt to cool to a temperature below a predetermined minimum bonding temperature. The surface of the joining area of the first layer is then preheated to a temperature above the minimum bonding temperature but below the ignition temperature of the asphalt. The remainder of the joining area of the first layer is then allowed to absorb the heat from the surface. After a predetermined period of time is allowed for absorption of heat, the surface of the joining area of the first layer of asphalt is again heated to a temperature below the ignition temperature of the asphalt and the second layer of asphalt is placed adjacent to the first layer such that a joint is formed between the first layer and the second layer.

Abstract: A method and apparatus for altering an aggregate gradation mixture of an asphalt concrete mixture. The apparatus includes a heater for heating a layer of existing roadway materials, a milling and mixing auger for milling the heated layer of existing roadway materials and a hopper and conveyor for providing a predetermined amount of treated new usable aggregates to the milling and auger for mixing with the heated layer of existing roadway materials in order to produce a new asphalt concrete mixture. The auger including a plurality of milling bits extending therearound for receiving the predetermined amount of aggregates and mixing them with the milled layer of existing roadway materials, the milling bits are slanted to direct the aggregates received thereby and milled layer to a center line of the apparatus. A second auger is positioned along the center line of the apparatus and behind the auger for further mixing the new asphalt concrete mixture.

Abstract: A screed for a paver has a baseplate and at least one tamper bar arranged in front of the baseplate. The tamper bar extends transversely to the paving direction and is movable in upward and downward directions by means of an eccentric drive and is capable of being electrically heated. At least one coil is provided, which is arranged so as to be adjacent to the tamper bar and to which a high-frequency current may be applied by means of an electrical current source. The current flowing through the coil induces eddy currents in the tamper bar such that the tamper bar becomes heated.

Abstract: A melter and applicator (10) is shown for applying liquefied paving material to damaged pavement. The applicator (10) reduces the problems which occur due to the unintentional solidification of the paving material within the hose (74) of either the heated or unheated type. A cabinet (44) is provided which is selectively able to maintain the temperature of the unheated hose (74) during periods of non-use. In addition, a wand access port (100) is provided which allows either type of hose (74) to be run continuously, directing material back to a supply bin (26). In addition, a chimney (40) is provided which vents the by-products of combustion generated while melting the paving material. This chimney, (40) is fluidly coupled to the bin (26) which contains the paving material so that noxious fumes produced during the melting are drawn off.

Abstract: A system and method for supplying and distributing a viscous material onto a roof include a mobile vessel containing a supply of the material for location either on the roof or on the ground adjacent the building. A delivery conduit extends from a viscous material storage chamber in the vessel to a secondary vessel or to a material application tool on the roof. A heater is located on the vessel to heat the supply of material. A reversible pump and/or motor delivers the viscous material from the storage chamber through the conduit for subsequent application on the roof and pumps unused material through the conduit and into the storage chamber to maintain the temperature of the material and to prevent the material from hardening in the various conduits, supply lines and equipment. A bypass line extends between the conduit and storage chamber for return of the material by gravity to the chamber in the event of pump or motor failure.

Abstract: A method of removing ceramic tile wherein the tiles are heated using a gas burner by passing the flame of the burner over the surface of the ceramic tile where it is secured to a supporting surface by grout or other cementitious material. The ceramic tile is thus exposed to the burner flame for a period of time sufficient to fracture the ceramic tile from its secured position surrounded by the grout or other cementitious material. The apparatus upon which the burner is mounted includes a fuel supply, a burner assembly having at least one gas burner with a flame of at least 200,000 BTU. The fuel supply and burner assembly are interconnected to supply fuel to the burner assembly, and are mounted on a wheeled cart. The burner assembly is further positioned on the cart such that the burner is at least 3-5 inches above the ceramic tile being removed, such that the flame is provided from the burner in a circle having a diameter of approximately 6 inches over the ceramic tile being removed.

Abstract: A vehicle for repairing a damaged road surface by filling depressions within the road surface with a filling material has, in a direction of travel, a heating and scraping unit for removing excess road surface material from the road surface. It further has a depositing device for a filling material. A first dynamic compacting device is arranged downstream of depositing device for compacting the filling material to a level higher than a level of an adjacent undamaged area of the road surface. A doctor blade unit is connected to the depositing device so as to act downstream of the first dynamic compacting device onto the filling material for removing excess filling material. The doctor blade unit pivots horizontally in a direction perpendicular to the direction of travel. The doctor blade unit is vertically adjustable relative to the first dynamic compacting device and the depositing device. A second dynamic compacting device is arranged downstream of the doctor blade unit.

Abstract: A paving machine employs a screed heating system using heat from the exhaust system to heat indirectly the screed to the desired temperature. A heat exchange medium is heated by the exhaust system in a first heat exchanger and is then conveyed to a second heat exchanger where it heats the screed. Measures are taken to supply additional heat to the heat exchange medium as may be required to achieve the required heat transfer in the second heat exchanger. The system operates under low pressure and is thus simpler, less expensive, and less likely to fail than high-pressure systems. Preferably, the heat exchange medium is continuously circulated between the first and second heat exchangers in a closed-loop to minimize the amount of heat exchange medium required and to simplify the system. The system is also preferably designed to permit movement of the screed relative to the remainder of the paving machine and to permit flexing of the screed.

Abstract: A process for heating an asphalt surface and an apparatus therefor. The process comprises the steps of: igniting in a burner (30) a combustible mixture comprised of a fuel (50) and oxygen (60) to produce a hot gas; and feeding the hot gas to an enclosure having a radiative face (200) disposed above the asphalt surface (280). The asphalt surface heating apparatus comprises a hot gas producing burner (30) and an enclosure (25) comprising an inlet (120) for receiving hot gas from the burner and a radiative face (200) having a plurality of apertures. The apertures in the radiative face are of a dimension such that the hot gas: (i) heats the radiative face to provide radiation heat transfer to the asphalt surface; and (ii) passes through the apertures to provide convection heat transfer to the asphalt surface.

Abstract: A process for recycling the upper surface of an asphaltic surface. The process includes the steps of: (a) rupturing the upper surface to a depth of at least about 1.5 inches to provide a ruptured upper surface overlying the remaining unruptured portion of the asphaltic surface; (b) heating and mixing the ruptured upper surface on the remaining unruptured portion of the asphalt surface to a temperature in the range of from about 100.degree. to about 350.degree. F. to produce a heated, ruptured upper surface which is substantially free of moisture; and (c) pressing the heated, ruptured upper surface to provide a recycled asphaltic surface. An apparatus adapted for carrying out the process is also described.

Abstract: A method and apparatus for optimizing the curing of concrete poured under hostile ambient temperature conditions. The apparatus includes a liquid reservoir and pumping system and a number of spaced-apart tube segments overlaid into the forms for receiving the concrete with respective ends of the tubes positioned outside the concrete forms. A liquid manifold is connected to one set of tube ends and a second liquid manifold is connected to the other set of tube ends. The temperature of the liquid in the reservoir is adjusted for optimum curing of concrete, and the liquid is pumped through the tubes after the concrete has been poured; when the concrete hardens the liquid is disconnected, and the tubes are disconnected from the manifolds without removing the tubes from the hardened concrete.

Abstract: A process for continuously heating an asphalt surface is described. The process comprises moving a heater over the asphalt surface in successive forward and backward directions. The forward stroke of the heater is effected over a second distance and the backward stroke of the heater is effected over a first distance. The ratio of the second distance to the first distance is in the range of from about 0.10 to about 0.90. Preferably, the heater comprises at least two independent heaters arranged in series.

Abstract: In one aspect of the present invention, an automatic screed temperature control is disclosed. The control senses the screed temperature and compares the screed temperature to a lower set point. In response to the screed temperature being less than the lower set point, the control causes fuel to dispense into the combustion chamber and subsequently causes the fuel to ignite in order to heat the screed. The screed is heated until the screed temperature becomes greater than an upper set point.

Abstract: The object of the present invention is to avoid the difficulty of recruiting snow removal personnel by automatically melting snow that has accumulated on roads in areas having cold climates, and protect human life and secure the safety of vehicles and aircraft traveling on such roads and runways.The present invention is comprised of a heating unit wherein a surface heating element, in which an electrically conductive coating is applied onto a cloth, is positioned between metal plates such as aluminum plates above and below and wrapped in a tar-based moisture-proof sheet. Said heating unit is then embedded beneath the surface of road paving. After particularly carefully steam rolling the asphalt and concrete base layer in this case so that it is free of irregularities, the upper surface of said base layer is coated with a primer.

Abstract: A method and apparatus for painting highway stripes and other patterns on a road surface includes the steps of heating the road surface to be painted or treated with a protective coating to a temperature typically in the range of 150.degree. F. to 165.degree. F. Paint is applied in spray form, the resin and hardener ingredients being mixed preparatory to spraying by a spray head. The paint mixture is sprayed onto the heated road surface as soon after the heat treatment as is practical. The paint spray may be heated as it passes through the nozzle. Granulated glass beads may be dropped onto the paint coating to enhance absorption of heat energy by the paint.

Abstract: A process for recycling an asphaltic surface. The process comprises: (a) providing an asphaltic surface having an upper surface for recycling; (b) rupturing the upper surface to a depth of at least about 1.5 inches to provide a ruptured upper surface; (c) heating and mixing the ruptured upper surface on the asphalt surface to a temperature in the range of from about 100.degree. to about 350.degree. F. to produce a heated, ruptured upper surface which is substantially free of moisture; and (d) pressing the heated, ruptured upper surface to provide a recycled pavement surface. An apparatus adapted for carrying out the process is also described.

Abstract: A heated screed assembly (10) for use with a paving machine (12) includes a screed (16). An elastomeric, electrically-powered heating element (36) is carried on the upper surface (28) of the screed. A retaining member (48) is disposed to overly the heating element, whereby the heating element is retained in contact with the upper surface of the screed during operation of the paving machine. Electric power is supplied to the elastomeric heating element by a generator (44).

Abstract: A screed assembly has a screed plate that is formed of a material having a thermal conductivity of less than about 25 W/mK, and a thermal barrier material having a thermal conductivity of less than about 0.5 W/mK that substantially covers an upper surface of the screed plate. The low thermal conductance properties of the screed plate obviate the need for auxiliary heating systems to preheat or maintain the screed plate in thermal equilibrium with a paving material.

Abstract: An automated pavement repair vehicle includes a vehicle and its various computer-controlled subsystems. The various subsystems, including a vacuum system, heating system and spray patch system, for completing pavement repair, are located on the frame and rear of the truck. A robotic cell at the rear of the truck includes an assembly of retractable doors. The doors are lowered around the pothole to allow control of ambient conditions during the pavement repair procedure.

Abstract: Heat exchange tubes are mounted on the upper face of the sole plates of the main screed and screed extenders on an asphalt paving machine. Hot oil is circulated through the heat exchange tubes to preheat the sole plates. The heating system for the oil includes a heat exchanger in the exhaust system of the internal combustion engine for driving the tractor of the paving machine. The heating oil is pressurized by a pump driven by a hydraulic motor supplied with pressurized oil in a second hydraulic circuit from a pump driven by the engine. This second circuit is also used to operated the vibratory mechanisms on the screeds.

Abstract: An apparatus for feeding preheated aggregate material, such as for the production of asphalt. A feed hopper includes a heater within its interior and positioned adjacent a slotted discharge opening at the lower end of the hopper. A tent-like cover is positioned above the heater to deflect aggregate material from contacting the upper portion of the heater and to transfer heat to the aggregate material in a uniform and efficient manner. The heater may preferably be a gas-fired radiant heater extending lengthwise parallel to and for the full length of the slotted discharge opening. A series of hoppers may be arranged in side-by-side relation and a common conveyor positioned beneath the individual feed conveyors of each hopper to direct the preheated aggregate material to a subsequent processing apparatus, such as a drum mixer or other dryer, used for the production of asphalt.

Abstract: Heat exchange tubes are mounted on the upper face of the sole plates of the main screed and screed extenders on an asphalt paving machine. Hot oil is circulated through the heat exchange tubes to preheat the sole plates. The heating system for the oil includes a pressure drop across a flow restrictor. The heating oil is pressurized by a pump driven by a hydraulic motor supplied with pressurized oil in a second hydraulic circuit from the tractor of the paver. This second circuit is also used to operated the vibratory mechanisms on the screeds after the screeds are preheated.

Abstract: A method for constructing an asphalted road having a heating pipe laid thereunder, which comprises laying wire netting on a roadbed, placing a heating plastic pipe on the wire netting, fixing the pipe thereto and depositing asphalt concrete thereon, characterized by that a cooling medium is allowed to flow in the plastic pipe laid on the roadbed, and asphalt concrete is deposited while the inside of the plastic pipe is kept under a pressurized condition of 0.05 to 5 kg/cm.sup.2 by the cooling medium.

Abstract: A method for applying an asphalt layer on a construction surface comprises the steps of placing an asphalt lattice having an admixture of fibrous and particulate matter onto the construction surface, and heating the lattice with a flame so as to melt the asphalt mixture causing it to flow over the surface and fill any depressions and cracks thereon. The asphalt layer thus formed is in intimate contact with the surface and can be used as waterproofing or as a primer layer for further applications of asphalt.

Abstract: A movable asphalt heating unit for heating paved asphalt for paving or repairing is provided comprising a frame, and a heating chamber mounted to the frame in a rotatable arrangement whereby the heating chamber may be selectively positioned on the right side, left side or rear of the frame. The heating chamber preferably comprises one or more infrared heating elements.

Abstract: For uniformly heating a snow collecting surface on an outdoor structure, e.g., a roadway, a heat exchanging pipe system is embedded in the structure near the surface. The pipe system comprises two sets of parallel, and preferably, interdigitated sets of pipes, and means for pumping heated water in one direction through one of the sets of pipes and for pumping water in the opposite direction through the other set of pipes. Preferably, underground water is used; one well being used from which the underground water is pumped, and another well being into which the water discharged from the heat exchanger is pumped for eventual reheating of the discharged water.

Abstract: A mobile fossil fuel heating device allows almost any indoor or outdoor area to be heated with radiant heat. A radiant tube gas burning heater is mounted on a wheeled carriage for rotation about a horizontal axis so that the radiating face of the heater may be positioned in a desired orientation. Once positioned, the heater is held in that position by a clamp arrangement. The fossil fuel for powering the heater may comprise a number of propane tanks mounted on the carriage, and shielded from the heater by infrared shields. Hollow shafts mount the heater for rotation, and a fuel conduit, and an electrical wire, pass through one of the shafts to supply fuel and power to the heater while not interfering with the rotation of the heater.

Abstract: An infrared asphalt cold seam heater vehicle is self-propelled and has sidewardly extending infrared heating chambers for heating existing asphalt to soften it for bonding with freshly laid asphalt to minimize premature failure. The heater has heating chambers attachable to either the right or left side of the vehicle.

Abstract: A heating device for heating a substantially planar screed plate for a paving machine comprising a plate being spaced from the screed plate, and a space being defined therebetween. A heated gas inlet feeds into a tunnel connecting to the space. At least some of the heated gas is directed from the tunnel substantially parallel to the screed plate. The tunnel is formed from a plurality of tunnel branches with a orifice attached to the end of each tunnel orifice determining the direction where the heated gas will be directed.

Abstract: A lightweight surface heater suitable for repairing asphalt pavement, or the like, which conveniently folds for trailering. Air and gaseous fuel are mixed and forced down through refractory blanket to burn on its lower surface radiating heat to the roadway. A hinged middle allows one half of the heater, with trailer tongue and tires attached to its top, to be folded upside down underneath the other half during transport.

Abstract: A mill roll having a pair of ceramic, hollow rollers with the chambers defined in each filled with a plurality of particles with spaces defined therebetween including means to enter fuel therein to be burned to heat the rollers to incandescent temperatures.

Abstract: An asphalt road resurfacing machine includes a heater to soften asphalt pavement by heat, a plurality of scraper assemblies to excavate asphalt pavement, knock excavated asphalt pavement to pieces and mix the pieces evenly, a shaving device to shave the mixed pieces on the road, and a roller to crush and smooth the excavated asphalt pavement to a renovated condition.

Abstract: The invention relates to a laying plank for a road finishing machine, comprising a basic plank (1) which exhibits two central upright cheeks (2) to which a telescopic cylinder (3) is attached on each side which guides an inner movable cheek (8) of an extensible plank (4) for the lateral prolongation of the basic plank (1) and engages its outer movable cheek (5) for extension, guide rods (7) parallel to the cylinder axis being provided respectively between inner and outer cheeks (5,8) which are guided by an outer cheek (11) connected firmly to the basic plank (1).

Abstract: An apparatus and method for heating snow traction-improving material contained in a bin mounted on a motor vehicle, such as a truck. Panels are attached to the side of the bin to form a sealed cavity surrounding the bin. Hot exhaust from the motor vehicle engine is then piped into and flows through the cavity so as to heat the cavity, whereby heat from the cavity warms the contents of the bin. The exhaust then flows out an exit portal from the cavity to permit continued flow-through. Provision is made to form holes in any buttress supports, supporting the bin on the truck, which might obstruct the flow of hot exhause. Finally, a drain is provided, allowing any condensation formed in the cavity to escape.

Abstract: The invention relates to a laying plank for a road finishing machine, comprising a basic plank (1) which exhibits two central upright cheeks (2), on which an extension cylinder (3) is arranged on each side which is guided by an inner cheek (8) of an extensible plank (4) for the lateral prolongation of the basic plank (1) and engages its outer cheek (5) for extending, at least one guide rods (7) parallel to the cylinder axis being provided respectively between inner and outer cheeks (5, 8), which is guided by an outer cheek (9) located on the basic plank (1). In order that the basic plank (1) can be enlarged virtually to double width by the extensible planks, it is provided that the cheek (9) located on the basic plank (1) is constructed as a sliding block slidable relative to the basic plank (1) along a guide means (13) connected to the latter, the extending cylinder (3) being connected to the sliding block (9 ) and slidable.

Abstract: A method of installing preformed pavement marking materials on an asphalt surface involving using infrared heat to raise the temperature of the surface so that the asphalt is sufficiently softened so that preformed pavement marking materials may be pressed into said asphalt surface.

Abstract: An asphaltic pavement preconditioning machine to remove and grind up old asphalt so that it can be rejuvenated. The method and apparatus heats a strip of asphalt, grinds a first strip portion and moves the ground asphalt to a second strip portion leaving behind an exposed unsoftened layer. Both the ground material and the previously heated unground asphalt in the second strip are then ground. The exposed hard asphalt in the first strip is heated, softened and then ground and moved onto the first strip portion. The heat from the ground asphalt lying over the center strip portion softens the unground asphalt there which is subsequently ground together with the ground material and left for further processing.

Abstract: A system for heating the contents of a supply hopper mounted to a pavement patching vehicle. The vehicle has a remotely controlled distribution hopper mounted at the end of an articulated arm. The vehicle exhaust gas is directed to the supply hopper to keep the asphalt therein warm and to the distribution hopper to heat the underlying pavement. The supply hopper is of double wall construction with the heated exhaust gas directed in a circuitous path along the sidewall and the top before passing into the atmosphere.

Abstract: A method and apparatus is described for applying roofing paper to a roof by first heating and roofing paper before the paper is applied to the roof, and then applying the heated roofing paper to the roof for final assembly. The applicator consists of a flat table bed and a cradle at one end for holding a roll of roofing paper and a handle at the other end for pulling the applicator. Located on the flat table is a plurality of infrared heaters that form an oven over the flat table and which are pivotally attached to the handle for allowing the roofing paper to pass over the table and through the oven. The paper is drawn from the roll through the oven and under a pair of rollers that support the applicator.

Abstract: A method and apparatus for renewing the surface of asphaltic paving at low cost and for immediate reuse. The asphalt surface is heated to about 300.degree.-500.degree. F. The surface is broken to a depth of about two inches and the lower material thoroughly mixed in situ with the broken surface material. After mixing, the material is further heated to fuse the heated mixture into a homogeneous surface. The surface is screeded for leveling and compacted by a road roller. A road machine is disclosed having a steam manifold for heating the asphalt, transversely reciprocating breaker bars having teeth adjusted to the depth desired, toothed mixing cylinders for mixing the broken material, and a second steam manifold for reheating the mixed material. Reciprocating screed bars on the road machine level the mixed and heated material. Final compacting may be done with a conventional road roller.

Abstract: The invention here disclosed comprises a method and apparatus for rejuvenating an asphalt roadway surface resulting in up to approximately three inches of new repaved roadway surface produced at speeds of up to approximately twenty-two feet per minute. The method includes the steps of heating a top layer of roadway, scarifying that heated layer, adding a recycling agent and thoroughly mixing and screeding the road surface to form a recycled material, adding new asphalt mix to the recycled material and milling the combination to form a mixed material and leaving a sub-layer plane in the roadbed. The mixed material is next conveyed away to a paving station located at the end of the process. During this conveying, the sub-layer left by the milling cut is heated, scarified, treated and worked in a manner similar to the treatment performed on the top layer of road surface.

Abstract: Disclosed is a road surface heating vehicle as well as a gas supply system therefor. The vehicle is provided with heating panels and a gas tank. It further comprises a plurality of vaporizers connected in parallel to each other by a gas line and a liquid line. The gas line is connected to the heating panels via its branch lines. The gas and liquid lines are each mounted with a solenoid valve and a pressure adjusting valve. The gas tank is equipped with necessary instruments involved, the vehicle having a body equipped with an operating board containing a microcomputer which automatically makes its control operation based on the use of the associated members, in such a way as to keep the gaseous pressure to fall within a specified range of levels. The system comprises members corresponding to the above-mentioned members constituting the vehicle, including a microcomputer adapted to automatically control the gaseous pressure so that the same may be kept within a specified range of levels.

Abstract: A mobile paint application and microwave drying apparatus has a downwardly open hollow frame forming a microwave cavity movable over a surface on rollers. The interior cavity of the frame is coated with microwave absorbent material, as are the rollers. The frame in the front and rear conforms to the rollers with a certain gap and ends above the surface at a certain distance. Treads extend between the front and rear rollers on each side and have a thickness which is greater than the gap and distance so as to create a circuitous path from the cavity which blocks microwave radiation. A paint spray nozzle is located in the cavity and applies paint to the surface. This paint is rapidly dried by a microwave generator which is positioned in the cavity and directs radiation onto the wet paint.

Abstract: A paving machine is provided for depositing paving material onto a road surface. The paving machine has a frame mounted for movement along the road and a heater is mounted on the frame. The heater is movable between a first position at which it is capable of heating a width of the road to be paved and a second position at which the heater is stored for movement with the frame and spans a width less than the width of road to be paved.

Abstract: A lightweight surface heater suitable for repairing asphalt pavement, or the like, which conveniently folds for trailering. Air and gaseous fuel are mixed and forced down through refractory blanket to burn on its lower surface, radiating heat to the roadway. A hinged middle allows one half of the heater with trailer tongue and tires attached to its top to be folded upside down underneath the other half during transport.

Abstract: An asphalt pavement heating device, for use with an asphalt pavement recycling or repair apparatus which uses heaters to warm the asphalt to a pliable form thereby facilitating the recycling or repair process, wherein a pressurized combustible gaseous mixture of fuel and air is burned in a non-oxidizing blue hot flame which is impinging the pavement surface, said flame being formed in a firebox which is suspended on the front and/or underneath the carriage of the apparatus over the heated surface, said firebox having flexible or "sealing curtain type" side walls which drape to the surface thereby excluding the entrance of ambient air, said device being characterized by its capabilities to rapidly heat asphalt concrete pavement and its smokeless exhaust.

Abstract: This invention concerns a process for making a roadway marking strip adhere to a roadway surface without the need for any preliminary preparation, using a flame that simultaneously contacts the self-adhesive primer coating of the roadway strip and the roadway surface itself. This invention also concerns a process for covering the adhesive primer layer on the roadway strip with a thin sealing layer, and thus-formed roadway strip.

Abstract: The paved road surface reproducing apparatus consists of first and second self-propelled, steerable working trucks. The first truck is equipped with: a road surface heater; a pair of gas cylinder tables mounted on both sides of the truck which can be raised or lowered by lifts; a hopper for receiving a bituminous mixture from outside; and a conveyor for transporting the mixture form the hopper to the rear part of the truck. The second truck is equipped with: a hopper for receiving the bituminous mixture transferred from the first truck; a conveyor for transporting the mixture received from the hopper to the rear part of the truck; a powdery oil-absorber scattering device to minimize rutting; a small size road surface heater; a scarifier; a softening agent scattering device; and a rotor; and also equipped with a first screw spreader; a first screed; a second screw spreader; and a second screed in tandem at the rear part of the truck.

Abstract: A pavement patching vehicle includes an asphalt supply hopper and a distribution hopper mounted to the front of the vehicle at the end of a remotely controlled articulated arm. Asphalt is deposited into a pothole from the distribution hopper for compaction by a tamper, which is mounted to the distribution hopper by a combination tamper positioner and vibration isolator. The combination uses a specially adapted gas over hydraulic liquid in a piston and cylinder arrangement for this purpose. The articulated segments are moved through piston and cylinder drives mounted within the hollow arm segments and coupled to pivot shafts at the joints. The distribution hopper can be secured to the front of the vehicle by a support bracket on the vehicle and a pivotal support latch on the distribution hopper. An actuator bar extends from the tamper and engages a latch actuator, which extends from the support latch, when the tamper is raised.

Abstract: A heated screed assembly (10) for use with a paving machine (12) includes a screed (16). An elastomeric, electrically-powered heating element (36) is carried on the upper surface (28) of the screed. A retaining member (48) is disposed to overly the heating element, whereby the heating element is retained in contact with the upper surface of the screed during operation of the paving machine. Electric power is supplied to the elastomeric heating element by a generator (44).