Abstract: A mobile asphalt production machine mixes bituminous concrete at the job site through a mixing auger mechanism mounted in an insulated housing. Propane burners provide heat within the mixing auger mechanism and within the insulated housing to produce a hot-mix bituminous concrete in large or small batches. The components of the asphalt mixture are stored in separate bins that can be re-filled at the job site to provide a continuous supply of asphalt. Hot liquid bitumen is added to heated aggregate within the mixing auger mechanism. Recycled asphalt can be added through a port in the mixing auger for incorporation into the mixture. Controls permit the rate of flow of each individual component to be selectively varied in order to change the recipe for the mixture and to provide calibration of the component, while a master control will maintain the pre-established flow rates through a variable speed of operation.

Abstract: According to a method for constructing a cover layer S on a planum M by using a paving screed B the elevation of the paving screed B above the planum M is measured using a reference RZ on the planum M by at least one elevation sensors H and/or the lateral inclination of the paving screed B with respect to the planum M is measured by at least one lateral inclination sensor N. Upon occurrence of a deviation from the target elevation pulling points P of pulling bars 6 of the paving screed B are displaced vertically at a road paver F by levelling cylinders Z. Each levelling cylinder Z is exclusively adjusted over an absolute stroke starting from a selected zero point NP. The absolute stroke is calculated from a measuring result of a reference measurement and by consideration of a construction ratio factor.

Abstract: A concrete screed includes a screed bar, a bar mover adapted to move the screed bar over concrete, and a mount coupling the bar mover to the screed bar.

Abstract: An extension screed is for a paving vehicle screed assembly that includes a main screed. The extension screed includes two base members movably connectable with the main screed and two vertical actuators each extending between the main screed and a separate base member. Each vertical actuator linearly displaces the connected base member with respect to the main screed in opposing vertical directions. A carriage preferably includes an inner frame movably connected with the base members and an outer frame slidably disposed about the inner frame and configured to support a screed plate. The vertical actuators vertically displace the carriage and alternatively pivot the carriage within a vertical plane. Further, a first horizontal actuator displaces the inner frame with respect to the two base members in opposing horizontal directions and a second horizontal actuator displaces the outer fame with respect to the inner frame in opposing horizontal directions.

Abstract: Concrete-finishing tools and attachments, such as edgers, groovers, and groover attachments, are disclosed. The tools and attachments may include a unitary stainless steel body or element. The tools and attachments may be formed by a method or methods including casting and forging.

Abstract: A floating screed device has a first section for cutting through plastic concrete and a second section for floating on the plastic concrete. The first and second sections are coupled together by a mechanism that moves the first section relative to the second section in a direction perpendicular to the planar bottom of the second section as the floating screed device is moved through a volume of unfinished plastic concrete.

Abstract: A control system for heating a screed assembly of a paving machine is provided. The control system includes a plurality of resistive heating elements positioned adjacent to a screed plate of the screed assembly. An electrical power supply is selectively connected with the resistive heating elements via switches operated by a controller. The controller is responsive to inputs from at least manual switches and temperature sensors. The controller is configured to automatically adjust the temperature of the screed plate by selectively energizing fewer than all of the resistive heating elements at a time.

Abstract: A powered roller screed (366) is disclosed, that uses a dual-drive power unit (370) and a screed roller (368). A power source (372) of the dual-drive power unit (370) includes a first drive output (374) and a second drive output (376), which rotate in the same direction and at the same rate. Each of the first drive output (374) and the second drive output (376) may be used to rotate the screed roller (368). For instance, the first drive output (374) could be attached to a first end of the screed roller (368), or the second drive output (376) could be attached to the second end of the screed roller (368), all to rotate the screed roller (368) in the same direction as the screed roller (368) is being pulled over wet concrete (364).

Abstract: In one aspect of the present invention, a paved surface reconditioning system has a vehicle adapted to traverse a paved surface. The vehicle having a press plate with a working surface having plurality of nozzles disposed therein. At least one of the nozzles has an inner diameter less than 1 mm. A fluid passage may connect the nozzle to a reservoir. The reservoir and fluid passage have a volume and a pressurizing mechanism in communication with the volume and being adapted to pressurize at least a portion of the volume.

Abstract: A screed rail system for placing uncured concrete includes a pair of rails positioned to lie spaced-apart and parallel to one another and a screed plate supported between the rails to move along the rails to form a final grade level of uncured concrete in a work area.

Abstract: A floating screed device has a first section for cutting through plastic concrete and a second section for floating on the plastic concrete. The first and second sections are coupled together by a mechanism that moves the first section relative to the second section in a direction perpendicular to the planar bottom of the second section as the floating screed device is moved through a volume of unfinished plastic concrete.

Abstract: A vibrating device for surfacing concrete comprising a surfacing blade, a vibration-causing assembly in communication with the surfacing blade and an actuator in communication with the vibration-causing assembly for imparting a vibratory motion to the blade. The vibration-causing assembly comprises a shaft assembly and a bearing assembly in communication with said shaft assembly. The bearing-assembly provides for substantially avoiding undesired movement of said blade during the vibratory motion.

Abstract: A bed-depth gauge consists of a guide member, a screed member, and means for assembling them for relative movement, for effective depth adjustment, in a vertical direction that is generally perpendicular to a bottom edge of the screed member. The guide member has a pair of arms that extend laterally, at different heights, which are used to engage and follow a fixed reference surface to thereby enable the bottom edge of the screed member to level and control the depth of both a base layer and also an overlying upper layer, comprising a bed prepared for installation of paving blocks and the like.

Abstract: A screed attachment is provided for an industrial vehicle, such as a skid steer vehicle. The attachment includes a pair of extendable beam assemblies and a mounting structure configured to support the beam assemblies on the forward attachment point of the vehicle. The beam assemblies are set apart sufficient for the skid steer to drive between the assemblies to engage the mounting structure. Legs are provided to support the beam assemblies when the screed attachment is in use. The screed attachment includes a screed plate supported by the extendable beam of the beam assemblies so that the screed plate can be extended over a concrete pour and retracted along the pour to perform the screeding operation. The screed plate is vertically adjustable and may be under the control of a laser leveling system.

Abstract: A method and apparatus for screeding post tensioned concrete slabs includes providing a screeding device having a wheeled support having a frame portion and spaced apart wheels rotatably mounted to the frame portion. The screeding device has a screed head mounted to the wheeled support. The screed head includes a vibrating member and a grade setting device adjustably mounted to the vibrating member. The vibrating member is at least partially supportable on the uncured concrete surface, and the grade setting device is adjustable relative to the vibrating member to strike off excess uncured concrete in front of the vibrating member to establish the desired grade or level of the uncured concrete. The screed head may be pivotable relative to the wheeled support about a longitudinal pivot axis extending along the screeding device and in the direction of travel of the screeding device.

Abstract: A vibrating device for surfacing concrete comprising a surfacing blade, a vibration-causing assembly in communication with the surfacing blade and an actuator in communication with the vibration-causing assembly so as to cause the vibration-causing assembly to impart a vibratory motion to the blade. A seal member is mounted about the junction between the actuator and the vibration-causing assembly. The said seal member seals the junction from concrete during surfacing.

Abstract: An apparatus for regulating a flow of pavement rejuvenation materials for deposit on a roadway is disclosed in one aspect of the invention as including a first channel is supported by a pavement recycling machine and is in communication with a supply of pavement rejuvenation materials; a second channel slideably coupled to the first channel, the pavement rejuvenation materials adapted to flow through the first and second channels; and a hardened tip coupled to the second channel. The apparatus may also have a seat coupled to one of the channels; and a blocking element coupled to the other of the channels. Upon sliding the first channel with respect to the second channel, the blocking element contacts the seat, thereby impeding the flow of pavement rejuvenation materials flowing through the channels.

Abstract: A rotating cylinder cement screeding system having a drive assembly and handle at one end for powering and controlling the screeding system. The rotating cylinder is made of tubular screed rollers of varying lengths allowing a user to customize the length of the system to match a specific cement pour. Further, each tubular screed roller is supplied with a male and female end for interlocking with each other and for receiving a variety of add on attachments. The rotating cylinder may also be equipped with a constant velocity type U-joint to allow the rotating cylinder to flex and thus, allow for pours with crowns or valleys, as need by the cement installer.

Abstract: The invention relates to a vibratory paving screed for a paver, comprising a baseplate and a vibration drive therefor and also comprising a front wall which is mounted upstream of the baseplate in the paving direction, is fixed with respect to the baseplate and engages with the baseplate, in which arrangement the baseplate comprises a section of uniform thickness and, in the region of its front edge, a separate, solid strip which is connected to the section and has a metering slope and a flat run-in bevel situated behind.

Abstract: A screed assembly includes a screed plate, a console assembly, and a first and second handles. The various components of the screed assembly are attached to one another with quick connect mechanisms so that they can be disassembled for cleaning and transport and reassembled at a new site. A tilt mechanism operated by a horizontal beam of light can also be utilized and is also attached by a quick connect mechanism.

Abstract: A wheeled screeding device includes a wheeled support having a frame portion supported by at least one wheel, with the at least one wheel defining an axis of rotation. A screed head is mounted to the frame portion and is balanced such that the screed head is at least partially supportable on an uncured concrete surface. The screed head is adapted to impart a force onto the uncured concrete surface. An adjustment device may be operable to adjust a balance of the wheeled support about the axis of rotation to adjust the force imparted by the screed head. The screed head may be pivotable about an axis generally normal to the axis of rotation of the wheel and relative to the at least one wheel to adjust an angle of the screed head relative to the axis of rotation of the wheel.

Abstract: An apparatus, method, and system are disclosed, which provide a means of real time surface profile evaluation in wet cement. The sliding profiler can be pulled behind various stages in a paving train. The user is alerted to profile discrepancies while the cement is still pliable and afforded the opportunity to make adjustments to the paving process, to include additional finishing. The system is made of affordable components and thus is appropriate for construction projects of different scale. In addition, multiple sliding profilers can measure the profile of multiple wheel paths simultaneously. The system can measure profile changes of less than 150 mils. Use of the system described herein will contribute to better roadways at lower costs.

Abstract: A concrete screed includes an engaging frame for readily engaging the mounting fixture of a skid loader or the like, with a pair of spaced parallel frame arms long enough to keep the skid loader off the concrete form, with a screed blade attached to the distal ends of the two frame arms. A pre-screed screeding blade having a V-shape is fixed to the screed blade for knocking down high spots in poured concrete. The side frame arms are free to pivot up and down at both ends. A pair of pulling arms, each pivotally connected to the screed blade at one end and to a side frame arm at the other, exert the actual pulling force that pulls the screed blade across the poured concrete. A pair of hydraulic vibrators fixed to the screed blade vibrates the screed blade to puddle and settle the concrete for leveling.

Abstract: A planetary grinding machine having a simple design with a minimal number of parts, which are all easily accessible for maintenance and repair is disclosed. The machine has a rotating planetary disk with rotating screeding disks attached. The planetary disk is driven by a shaft extending through a top housing cover plate, which supports a transmission driven by a motor. As the planetary disk rotates, a single belt engages a stationary gear on the cover plate and pulleys on screeding disk shafts to turn the screeding disks as the planetary disk is turned. The belts and pulleys for the drive mechanism are sandwiched between the planetary disk and the top cover to protect the mechanisms from dust and debris. The bearings are sealed to prevent dust and debris from entering and oil from escaping. The bearings, being on the inside of the planetary disk, keep oil from landing on the floor.

Abstract: According to a method for constructing a cover layer S on a planum M by using a paving screed B the elevation of the paving screed B above the planum M is measured using a reference RZ on the planum M by at least one elevation sensors H and/or the lateral inclination of the paving screed B with respect to the planum M is measured by at least one lateral inclination sensor N. Upon occurrence of a deviation from the target elevation pulling points P of pulling bars 6 of the paving screed B are displaced vertically at a road paver F by levelling cylinders Z. Each levelling cylinder Z is exclusively adjusted over an absolute stroke starting from a selected zero point NP. The absolute stroke is calculated from a measuring result of a reference measurement and by consideration of a construction ratio factor.

Abstract: A wheeled screeding apparatus includes a vibrating member adjustably mounted at an end of a frame portion of a wheeled support, with the vibrating member at least partially supporting the end of the frame portion. The vibrating member is generally vertically adjustable relative to the frame portion to adjust a level of the vibrating member relative to the wheeled support. A level control is operable to automatically adjust the vibrating member relative to the frame portion in response to an output of a level sensor, with the level control automatically adjusting the vibrating member relative to the frame portion to substantially maintain the frame portion at a desired orientation relative to horizontal as the screeding device is moved over and through the uncured concrete in a screeding direction.

Abstract: A hand screed for screeding fluid material includes an elongated beam having a bottom surface for disposal adjacent a surface to be screeded and an elongated handle removably connected to the beam.

Abstract: A leveling system for freshly poured concrete is provided comprising a hand screed and a hand float. The system includes a laser beam leveling system consisting of a laser transmitter mounted on the hand screed and a laser beam receiver target mounted on the hand float. The hand screed further includes an inclinometer mounted on top of the hand screed for maintaining the angle of the screed when the screed is used on sloped surfaces. Bubble levelers positioned on top of the hand screed and the hand float are used to maintain the hand screed and the hand float in a level position.

Abstract: A form for concrete strike-off has a rigid straightedge assembly and a support coupled to one end of the straightedge assembly. The straightedge assembly includes a grate coupled to the bottom edge of a support bar. The grate extends away from the support bar with a top surface of the grate defining a plane on at least one side of the support bar. In use, a portion of the straightedge assembly defines a reference elevation for concrete strike-off operations.

Abstract: An ergonomically-shaped hand screed for levelling and finishing concrete is provided. The screed has a finger relief groove on its rear face and a thumb relief groove on its front face. Both the finger and thumb grooves are positioned nearer the top surface of the screed to form an ergonomically comfortable handgrip. A concrete relief groove is located on the front face near the bottom surface to form a scraper edge. A ridge separates the thumb relief groove and the concrete groove. When the screed is used, the scraper edge and concrete relief groove draw up the concrete overburden from a concrete surface and deflect it away from the operator's hands.

Abstract: An apparatus (10) for creating a sloped surface comprising at least one leveling member (12) and at least one guide member (36) for guiding the at least one leveling member (12). The at least one leveling member (12) changes the slope of the surface depending on a distance between a point of low elevation (54) to a point of higher elevation as the at least one leveling member (12) travels across the at least one guide member (36).

Abstract: A hand trowel for vibrating concrete in order to smooth the concrete. The trowel has a blade, a handle mounted on the blade, and electrical components including a motor inside the handle. When the switch is turned on, the motor causes the handle to vibrate, which in turn transmits vibrations to the blade and to the concrete surfaces that come in contact with the blade.

Abstract: In combination with a placers/spreader having a frame including at least two side bolsters standing parallel to the subgrade path and at least two cross beams spanning the subgrade path forming a conveyor supporting structure. A rail system is attached spanning the frame, and has a roll in/roll out conveyor with a cantilevered support at one of the side bolsters and a support for attachment to and support from the rail system. The conveyor moves in traversing motion across the frame to distribute concrete. The improvement comprises a strike off beam and spreader plow assembly for trailing attachment to the frame of a placer/spreader. We thus disclose a strike off beam with spreader plow assembly which can be removably attached to either side of a placer/spreader to avoid the necessity of relocating the receiving conveyor when the location of the access road changes from one side to the other or direction of spreading changes.

Abstract: A multi-use asphalt paving tractor with frame raise capability and a blind-mateable connector to facilitate quick connection with interchangeable attachments for performing the functions of a paver, a mix transfer conveyor and road widener.

Abstract: A screed attachment is provided for an industrial vehicle, such as a skid steer vehicle. The attachment includes a pair of extendable beam assemblies and a mounting structure configured to support the beam assemblies on the forward attachment point of the vehicle. The beam assemblies are set apart sufficient for the skid steer to drive between the assemblies to engage the mounting structure. Legs are provided to support the beam assemblies when the screed attachment is in use. The screed attachment includes a screed plate supported by the extendable beam of the beam assemblies so that the screed plate can be extended over a concrete pour and retracted along the pour to perform the screeding operation. The screed plate is vertically adjustable and may be under the control of a laser leveling system.

Abstract: A soft landing control system for a screeding device is operable to automatically lower a vibrating member relative to a grade setting device after the grade setting device is lowered to the desired grade. The control may be operable to delay lowering the vibrating member relative to the grade setting device at least until the control receives an input indicative of at least a portion of the screed head assembly being moved to a position generally over a newly placed concrete area. Optionally, the control may delay lowering of the vibrating member relative to the grade setting device until a period of time has elapsed after an activating event. Optionally, the control may automatically stop vibration of the vibrating member when the screed head assembly is not moving in the screeding direction and may automatically vibrate the vibrating member when the screed head assembly moves in the screeding direction.

Abstract: A hand screed for screeding fluid material includes an elongated beam having a bottom surface for disposal adjacent a surface to be screeded and an elongated handle removably connected to the beam.

Abstract: This invention relates to screeds used for compacting paving material. The invention provides a screed for a paving machine comprising a sole plate; a tamper adjacent the sole plate; a heating element mounted on the sole plate; and a heat conductor mounted on the sole plate and arranged to conduct heat from the heating element to the tamper.

Abstract: A walkway extension assembly for a paving machine has main and laterally extendable and retractable screeds and a transversely extending rear catwalk or walkway. The assembly has a laterally extending walkway component extending beneath and on each side of the existing walkway. Channel members are attached to and extend downwardly from bottom surfaces of the existing walkway. The lateral walkway components are positioned beneath the existing walkway on these channel members, and are slideably extendable, laterally and outward from the existing walkway. Brackets are attached between the ends of the walkway components and the sidewalls of the lateral screeds. By this configuration, when the lateral screeds are extended from beneath the paving machine, the lateral walkway components, moving in tandem with the screeds, are also extended. Workers are thus able to stand on the walkway components, outboard of the paving machine itself, to observe the lateral paving operations.

Abstract: A wheeled strike-off apparatus is movable over a surface of uncured concrete or subgrade materials and is operable to establish a desired grade of the uncured concrete surface or subgrade surface. The apparatus includes a wheeled support and a plow assembly. The plow assembly may be adjustably mounted to a front frame portion and may be vertically adjustable relative to the frame portion. The plow assembly may include a plow member for engaging and establishing the desired grade and/or may include a vibrating member for vibrating and smoothing the concrete after the plow member establishes the desired grade. The apparatus may include a user input that is adjustable by an operator to adjust a down pressure of the plow assembly at the concrete when the wheeled support is moved in a rearward direction.

Abstract: A trowel device for use by an operator in an upright position comprises a trowel blade receiving assembly and a first elongate handle section, operably coupled to and extending away from the blade receiving assembly toward a proximal end of the device. A second elongate handle section is rotatably fixable with respect to the first elongate handle section and extends away from the blade receiving assembly toward the proximal end of the device. The first handle section is rotatable with respect to the second handle section about a longitudinal axis common to each of the handle sections to allow the operator to adjust an angle of a trowel blade of the trowel blade receiving assembly while the operator is an upright position.

Abstract: A floating screed device has an elongated float and an elongated blade movably coupled to the elongated float so that the blade is freely movable in pitch.

Abstract: A floating screed device has an elongated float and an elongated blade movably coupled to the elongated float so that the blade is movable in pitch.

Abstract: The invention is an apparatus for smoothing and leveling a hardenable paving material on an inclined surface. The apparatus can be detachably mounted onto a vehicle. The apparatus includes a base and at least one screed bar that extends outwardly from the base. The screed bar is capable of being angularly adjustable with respect to the base. The angle between the screed bar and the base can be adjusted so that the screed bar can be positioned in a substantially parallel relationship with a surface that is to be paved. The apparatus can be moved parallel to the surface to be paved so that the screed bar traverses across and levels hardenable material that has been deposited on the inclined surface. Upon completion of paving operations, the apparatus can be detached from the vehicle. In one embodiment, the apparatus can be mounted on a fork lift.

Abstract: A form for concrete strike-off has a rigid straightedge assembly and a support coupled to one end of the straightedge assembly. The straightedge assembly includes a grate coupled to the bottom edge of a support bar. The grate extends away from the support bar with a top surface of the grate defining a plane on at least one side of the support bar. In use, a portion of the straightedge assembly defines a reference elevation for concrete strike-off operations.

Abstract: A screeding apparatus and method for screeding and smoothing an uncured concrete surface includes a vibrating member and a grade setting device adjustably mounted to said vibrating member. The screeding apparatus may include a wheeled support which at least partially supports the vibrating member and/or the grade setting device. The grade setting device may be vertically adjustable to set or indicate the desired grade of the concrete surface as the screeding apparatus is moved over and through the uncured concrete. The level of the screeding apparatus may be automatically adjustable to maintain a desired level and angle of attack of the vibrating member.

Abstract: Screeding apparatus includes an elongated support and a strike board extending from a carriage on the elongated support, the support moved by drive structure along spaced side forms. The carriage and strike board are moved relative to the elongated support to engage, move and compact wet concrete within a cavity between said side forms during formation of a concrete slab.

Abstract: An apparatus for use in shearing paving material applied to a surface is provided. This apparatus includes a blade for shearing the asphalt mixture to a desired thickness, cylinders for raising and lowering the blade in response to elevational changes in the surface, at least one signal generator associated with each cylinder and adapted to produce a signal indicative of the elevation of the surface, and at least one signal receiver associated with each signal generator. This blade apparatus is coupled with a prime mover. The receiver is operable to activate the cylinders in response to a signal received from the generator. The blade is raised and lowered as the elevation of the surface changes in response to signals emanating from the generator allowing surface level variations to be evened out while paving.

Abstract: Methods and apparatus for screeding freshly placed concrete in which the acoustic impedance of the treating equipment is made substantially equal to the acoustic impedance of the concrete slab. Portions of the screed contacting the plastic concrete are matched to an acoustic impedance approximating the acoustic impedance of plastic concrete, promoting the energy transferred to the concrete. The acoustic matching material is fabricated from a material that has an acoustic impedance within 67% to 150% of the acoustic impedance of the concrete being finished. The acoustic matching material has an abrasion resistance of no greater than 150 measured using ASTM Method G-65 where steel is given a rating of 100. The preferred matching material comprises ultra-high molecular weight polyethylene (UHMWPE) plastic.

Abstract: A subgrade preparation apparatus for preparing a subgrade surface for concrete to be placed thereon includes a base unit positionable on a support surface adjacent to a targeted subgrade area, an extendable boom extending from the base unit, and a subgrade head assembly adjustably mounted on the extendable boom. The subgrade head assembly includes a framework, a plow and a material moving device for moving material toward at least one side of the subgrade head assembly. The subgrade head assembly includes a plow end plate movably attached at an outer end of the plow and movable to a position where the plow end plate is generally vertical and forms an end portion of the plow to limit plowed material from flowing around the outer end of the plow as the subgrade head assembly is moved over and along the subgrade surface at the targeted subgrade area.