Abstract

A paving machine for spreading, leveling and finishing concrete having a main frame, center module, bolsters laterally movably, and a crawler track associated with respective aft and forward ends of the bolsters. A bolster swing leg for each crawler track supports an upright jacking column. A worm gear drive permits rotational movements of the crawler track and the jacking column. A hinge bracket is interposed between each swing leg and a surface of the bolsters to enable pivotal movements of the swing leg. A length-adjustable holder engages the pivot pin on the hinge bracket and pivotally engages the swing leg. The holder permits pivotal motions of the swing leg in its length-adjustable configuration and prevents substantially any motion of the swing leg in its fixed-length configuration. A feedback loop cooperates with transducers keeping the crawler tracks position. The paving machine can be reconfigured into a narrowed transport configuration.

IPC Classes  ?

• B62D 55/084 - Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units
• E01C 19/48 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface
• E01C 19/42 - Machines for imparting a smooth finish to freshly-laid paving courses other than by rolling, tamping, or vibrating
• E01C 19/00 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
• B62D 55/065 - Multi-track vehicles, i.e. more than two tracks
• E01C 23/04 - Devices for laying reinforcing elements or dowel barsRemovable supports for reinforcing elementsDevices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcement
• B62D 7/06 - Steering linkageStub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
• B62D 11/20 - Endless-track steering having pivoted bogie carrying track
• B62D 11/00 - Steering non-deflectable wheelsSteering endless tracks or the like

Abstract

A paving machine including a modular frame, a plurality of swing legs pivotable relative to the frame, a jacking column secured to each swing leg, a crawler track, a slew gear drive, and angular position transducers for measuring an angular position between the swing leg and the modular frame, and an angular position of the crawler track relative to the jacking column. Feedback from the transducers facilitates maintaining position of the crawler track. The jacking column can include telescoping outer and inner tubes, a vertically oriented hydraulic actuator including a cylinder and a piston operable within the outer and inner tubes, and spaced apart axial bearings coupled to the outer tube and/or the inner tube. The slew gear drive can be secured between the inner tube and a yoke and capable of steering the crawler track under load without lifting the crawler track.

IPC Classes  ?

• B62D 11/20 - Endless-track steering having pivoted bogie carrying track
• B62D 55/084 - Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units
• E01C 19/48 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface
• E01C 19/42 - Machines for imparting a smooth finish to freshly-laid paving courses other than by rolling, tamping, or vibrating
• E01C 19/00 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
• B62D 55/065 - Multi-track vehicles, i.e. more than two tracks
• E01C 23/04 - Devices for laying reinforcing elements or dowel barsRemovable supports for reinforcing elementsDevices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcement
• B62D 7/06 - Steering linkageStub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
• B62D 11/00 - Steering non-deflectable wheelsSteering endless tracks or the like

Abstract

A paver for laying down a strip of concrete and, with a dowel bar inserter module as part of the paver, inserting dowel bars into and parallel with to the concrete strip. The dowel bar inserter module has an operational width capable of covering paved concrete strips of greater than 34 feet. In some implementations, the dowel bar inserter module has an operational width of 36 feet, 40 feet, or 50 feet.

IPC Classes  ?

• E01C 19/48 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface
• E01C 23/02 - Devices for making, treating, or filling grooves or like channels in not-yet-hardened paving, e.g. for joints or markingsRemovable forms thereforDevices for introducing inserts or removable insert-supports in not-yet-hardened paving
• E01C 11/14 - Dowel assembly
• E01C 23/04 - Devices for laying reinforcing elements or dowel barsRemovable supports for reinforcing elementsDevices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcement

Abstract

A material placer having an augmented hopper, which can receive and convey concrete or other material at a greater rate than other material placers known in the industry. The augmented hopper has a relatively large volume, a bumper structure, a hinged flop gate, and a sliding gate plate that improves the process of receiving concrete or other discharged material from delivery trucks. The hinged flop gate and/or the sliding plate can optionally be vibrated to aid in moving concrete or other material into the trough of the augmented hopper. The material placer is further configured to have ease of access for cleaning and maintenance.

IPC Classes  ?

• E01C 19/00 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
• E01C 19/20 - Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders
• B60P 1/38 - Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using endless chains or belts thereon forming the main load supporting or containing element or part thereof
• E01C 19/18 - Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect

Abstract

A swing leg assembly, coupled to a paving machine for spreading, leveling and finishing concrete, includes a pivotable swing leg coupled to the paving machine. The swing leg may pivot between multiple angular orientations relative to the paving machine. A jacking column is coupled to the swing leg, and a crawler track is coupled to the jacking column. A slew drive coupled to the jacking column and crawler track rotates the crawler track relative to the jacking column between multiple angular orientations. A processor using sensors determines the angular positions of the swing leg and crawler track, and in response to determining a change in angular orientation of the swing leg controls the slew drive to cause the crawler track to rotate relative to the jacking column.

IPC Classes  ?

• B62D 11/20 - Endless-track steering having pivoted bogie carrying track
• B62D 55/084 - Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units
• E01C 19/48 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface
• E01C 19/42 - Machines for imparting a smooth finish to freshly-laid paving courses other than by rolling, tamping, or vibrating
• E01C 19/00 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
• B62D 55/065 - Multi-track vehicles, i.e. more than two tracks
• E01C 23/04 - Devices for laying reinforcing elements or dowel barsRemovable supports for reinforcing elementsDevices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcement
• B62D 7/06 - Steering linkageStub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
• B62D 11/00 - Steering non-deflectable wheelsSteering endless tracks or the like

Abstract

A material placer having an augmented hopper, which can receive and convey concrete or other material. The augmented hopper has a relatively large volume, a bumper structure, a hinged flop gate, and a sliding gate plate mounted on the hinged flop gate for receiving concrete or other discharged material from delivery trucks. The hinged flop gate and/or the sliding plate can optionally be vibrated to aid in moving concrete or other material into the trough of the augmented hopper. The material placer is further configured to have ease of access for cleaning and maintenance.

IPC Classes  ?

• E01C 19/00 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
• E01C 19/20 - Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders
• B60P 1/38 - Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using endless chains or belts thereon forming the main load supporting or containing element or part thereof
• E01C 19/18 - Devices for distributing road-metals mixed with binders, e.g. cement, bitumen, without consolidating or ironing effect

Abstract

A paver for laying down a strip of concrete and, with a dowel bar inserter module as part of the paver, inserting dowel bars into and parallel with to the concrete strip. The dowel bar inserter module has an operational width capable of covering paved concrete strips of greater than 34 feet. In some implementations, the dowel bar inserter module has an operational width of 36 feet, 40 feet, or 50 feet.

IPC Classes  ?

• E01C 23/04 - Devices for laying reinforcing elements or dowel barsRemovable supports for reinforcing elementsDevices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcement
• E01C 7/14 - Concrete paving
• E01C 11/04 - Arrangement or construction of jointsMethods of making jointsPacking for joints for cement concrete paving
• E01C 11/14 - Dowel assembly
• E01C 19/22 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials

Abstract

A paver for laying down a strip of concrete and, with a dowel bar inserter module as part of the paver, inserting dowel bars into and parallel with to the concrete strip. The dowel bar inserter module has an operational width capable of covering paved concrete strips of greater than 34 feet. In some implementations, the dowel bar inserter module has an operational width of 36 feet, 40 feet, or 50 feet.

IPC Classes  ?

• E01C 23/00 - Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
• E01C 23/02 - Devices for making, treating, or filling grooves or like channels in not-yet-hardened paving, e.g. for joints or markingsRemovable forms thereforDevices for introducing inserts or removable insert-supports in not-yet-hardened paving
• E01C 11/14 - Dowel assembly
• E01C 23/04 - Devices for laying reinforcing elements or dowel barsRemovable supports for reinforcing elementsDevices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcement
• E01C 19/48 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface

Abstract

A material placer having an augmented hopper, which can receive and convey concrete or other material at a greater rate than other material placers known in the industry. The augmented hopper has a relatively large volume, a bumper structure, a hinged flop gate, and a sliding gate plate that improves the process of receiving concrete or other discharged material from delivery trucks. The hinged flop gate and/or the sliding plate can optionally be vibrated to aid in moving concrete or other material into the trough of the augmented hopper. The material placer is further configured to have ease of access for cleaning and maintenance.

IPC Classes  ?

• E01C 19/48 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface
• B60P 1/36 - Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using endless chains or belts thereon
• B60P 1/38 - Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using endless chains or belts thereon forming the main load supporting or containing element or part thereof
• B60P 1/43 - Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using a loading ramp mounted on the vehicle
• B65G 41/00 - Supporting frames or bases for conveyors as a whole, e.g. transportable conveyor frames
• B65G 47/18 - Arrangements or applications of hoppers or chutes
• B65G 47/19 - Arrangements or applications of hoppers or chutes having means for controlling material flow, e.g. to prevent overloading

Abstract

A paving machine for spreading, leveling and finishing concrete having a main frame, center module, bolsters laterally movably, and a crawler track associated with respective aft and forward ends of the bolsters. A bolster swing leg for each crawler track supports an upright jacking column. A worm gear drive permits rotational movements of the crawler track and the jacking column. A hinge bracket is interposed between each swing leg and a surface of the bolsters to enable pivotal movements of the swing leg. A length-adjustable holder engages the pivot pin on the hinge bracket and pivotally engages the swing leg. The holder permits pivotal motions of the swing leg in its length-adjustable configuration and prevents substantially any motion of the swing leg in its fixed-length configuration. A feedback loop cooperates with transducers keeping the crawler tracks position. The paving machine can be reconfigured into a narrowed transport configuration.

IPC Classes  ?

• B62D 7/06 - Steering linkageStub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
• B62D 55/084 - Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units
• E01C 19/48 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface
• E01C 19/42 - Machines for imparting a smooth finish to freshly-laid paving courses other than by rolling, tamping, or vibrating
• E01C 19/00 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
• B62D 55/065 - Multi-track vehicles, i.e. more than two tracks
• E01C 23/04 - Devices for laying reinforcing elements or dowel barsRemovable supports for reinforcing elementsDevices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcement
• B62D 11/20 - Endless-track steering having pivoted bogie carrying track
• B62D 11/00 - Steering non-deflectable wheelsSteering endless tracks or the like

Abstract

A paving machine for spreading, leveling and finishing concrete having a main frame, center module, bolsters laterally movably, and a crawler track associated with respective aft and forward ends of the bolsters. A bolster swing leg for each crawler track supports an upright jacking column. A worm gear drive permits rotational movements of the crawler track and the jacking column. A hinge bracket is interposed between each swing leg and a surface of the bolsters to enable pivotal movements of the swing leg. A length-adjustable holder engages the pivot pin on the hinge bracket and pivotally engages the swing leg. The holder permits pivotal motions of the swing leg in its length-adjustable configuration and prevents substantially any motion of the swing leg in its fixed-length configuration. A feedback loop cooperates with transducers keeping the crawler tracks position. The paving machine can be reconfigured into a narrowed transport configuration.

IPC Classes  ?

• B62D 55/084 - Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units
• B62D 7/06 - Steering linkageStub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
• E01C 23/04 - Devices for laying reinforcing elements or dowel barsRemovable supports for reinforcing elementsDevices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcement
• B62D 11/20 - Endless-track steering having pivoted bogie carrying track
• B62D 55/065 - Multi-track vehicles, i.e. more than two tracks
• E01C 19/48 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface
• E01C 19/00 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
• E01C 19/42 - Machines for imparting a smooth finish to freshly-laid paving courses other than by rolling, tamping, or vibrating
• B62D 11/00 - Steering non-deflectable wheelsSteering endless tracks or the like

Abstract

A paving machine for spreading, leveling and finishing concrete having a main frame, center module, bolsters laterally movably, and a crawler track associated with respective aft and forward ends of the bolsters. A bolster swing leg for each crawler track supports an upright jacking column. A worm gear drive permits rotational movements of the crawler track and the jacking column. A hinge bracket is interposed between each swing leg and a surface of the bolsters to enable pivotal movements of the swing leg. A length-adjustable holder engages the pivot pin on the hinge bracket and pivotally engages the swing leg. The holder permits pivotal motions of the swing leg in its length-adjustable configuration and prevents substantially any motion of the swing leg in its fixed-length configuration. A feedback loop cooperates with transducers keeping the crawler tracks position. The paving machine can be reconfigured into a narrowed transport configuration.

IPC Classes  ?

• B62D 55/084 - Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units
• E01C 19/48 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface
• E01C 19/42 - Machines for imparting a smooth finish to freshly-laid paving courses other than by rolling, tamping, or vibrating
• E01C 19/00 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
• B62D 55/065 - Multi-track vehicles, i.e. more than two tracks
• E01C 23/04 - Devices for laying reinforcing elements or dowel barsRemovable supports for reinforcing elementsDevices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcement
• B62D 7/06 - Steering linkageStub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
• B62D 11/20 - Endless-track steering having pivoted bogie carrying track

Abstract

A paving machine for spreading, leveling and finishing concrete having a main frame, center module, bolsters laterally movably, and a crawler track associated with respective aft and forward ends of the bolsters. A bolster swing leg for each crawler track supports an upright jacking column. A worm gear drive permits rotational movements of the crawler track and the jacking column. A hinge bracket is interposed between each swing leg and a surface of the bolsters to enable pivotal movements of the swing leg. A length-adjustable holder engages the pivot pin on the hinge bracket and pivotally engages the swing leg. The holder permits pivotal motions of the swing leg in its length-adjustable configuration and prevents substantially any motion of the swing leg in its fixed-length configuration. A feedback loop cooperates with transducers keeping the crawler tracks position. The paving machine can be reconfigured into a narrowed transport configuration.

IPC Classes  ?

• E01C 23/04 - Devices for laying reinforcing elements or dowel barsRemovable supports for reinforcing elementsDevices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcement
• B62D 7/06 - Steering linkageStub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
• B62D 11/20 - Endless-track steering having pivoted bogie carrying track
• B62D 55/084 - Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units
• E01C 19/42 - Machines for imparting a smooth finish to freshly-laid paving courses other than by rolling, tamping, or vibrating
• E01C 19/48 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface
• E01C 19/00 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
• B62D 55/065 - Multi-track vehicles, i.e. more than two tracks

Abstract

A paver for laying down a strip of concrete and inserting therein dowel bars parallel to the strip. A dowel bar inserter orients the bars and places them into the concrete. A pair of transport chains transverse to the travel direction extends across a width of the inserter. Pairs of generally L-shaped opposing cups hold the bars so that they can drop downwardly from the cups towards the strip. The chains move in a single direction. A dowel bar holding magazine, above the chains, stores bars, and gravitationally moves the bars towards the chains for pick-up by cups as the chains move the cups past a bar loading station. Elastic bands extend about a bar engaging surface defined by a wheel and resiliently bias the bars moving along the chain turn-around section against the wheel.

IPC Classes  ?

• E01C 23/04 - Devices for laying reinforcing elements or dowel barsRemovable supports for reinforcing elementsDevices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcement
• E01C 11/14 - Dowel assembly
• E01C 23/02 - Devices for making, treating, or filling grooves or like channels in not-yet-hardened paving, e.g. for joints or markingsRemovable forms thereforDevices for introducing inserts or removable insert-supports in not-yet-hardened paving

Abstract

A paving machine for spreading, leveling and finishing concrete having a main frame, center module, bolsters laterally movably, and a crawler track associated with respective aft and forward ends of the bolsters. A bolster swing leg for each crawler track supports an upright jacking column. A worm gear drive permits rotational movements of the crawler track and the jacking column. A hinge bracket is interposed between each swing leg and a surface of the bolsters to enable pivotal movements of the swing leg. A length-adjustable holder engages the pivot pin on the hinge bracket and pivotally engages the swing leg. The holder permits pivotal motions of the swing leg in its length-adjustable configuration and prevents substantially any motion of the swing leg in its fixed-length configuration. A feedback loop cooperates with transducers keeping the crawler tracks position. The paving machine can be reconfigured into a narrowed transport configuration.

IPC Classes  ?

• E01C 23/04 - Devices for laying reinforcing elements or dowel barsRemovable supports for reinforcing elementsDevices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcement
• B62D 55/084 - Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units
• B62D 11/20 - Endless-track steering having pivoted bogie carrying track
• E01C 19/00 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
• E01C 19/42 - Machines for imparting a smooth finish to freshly-laid paving courses other than by rolling, tamping, or vibrating
• E01C 19/48 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface

Abstract

A paver for laying down a strip of concrete and inserting therein dowel bars parallel to the strip. A dowel bar inserter orients the bars and places them into the concrete. A pair of transport chains transverse to the travel direction extends across a width of the inserter. Pairs of generally L-shaped opposing cups hold the bars so that they can drop downwardly from the cups towards the strip. The chains move in a single direction. A dowel bar holding magazine, above the chains, stores bars, and gravitationally moves the bars towards the chains for pick-up by cups as the chains move the cups past a bar loading station. Elastic bands extend about a bar engaging surface defined by a wheel and resiliently bias the bars moving along the chain turn-around section against the wheel.

IPC Classes  ?

• E01C 23/04 - Devices for laying reinforcing elements or dowel barsRemovable supports for reinforcing elementsDevices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcement
• E01C 11/14 - Dowel assembly

Abstract

A paving machine for spreading, leveling and finishing concrete having a main frame, center module, bolsters laterally movably, and a crawler track associated with respective aft and forward ends of the bolsters. A bolster swing leg for each crawler track supports an upright jacking column. A worm gear drive permits rotational movements of the crawler track and the jacking column. A hinge bracket is interposed between each swing leg and a surface of the bolsters to enable pivotal movements of the swing leg. A length-adjustable holder engages the pivot pin on the hinge bracket and pivotally engages the swing leg. The holder permits pivotal motions of the swing leg in its length-adjustable configuration and prevents substantially any motion of the swing leg in its fixed-length configuration. A feedback loop cooperates with transducers keeping the crawler tracks position. The paving machine can be reconfigured into a narrowed transport configuration.

IPC Classes  ?

• B62D 11/02 - Steering non-deflectable wheelsSteering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides

Abstract

A slipform paver including a dowel bar inserter unit having a pair of spaced-apart, endless transport chains oriented transversely to the travel direction. Each chain defines upper and lower strands with turn around chain sections at respective ends of the chain strands. A plurality of pairs of generally L-shaped opposing cups carried by exterior sides of the chain hold the dowel bars so that they can drop downwardly from the cups towards the concrete strip. A dowel bar holding magazine is located above the upwardly facing sides of the chains. Elastic bands having ends fixedly attached to the magazine extend generally about a portion of a convexly curved dowel bar engaging surface defined by a wheel and resiliency bias the dowel bars moving along the chain turn-around section against the wheel.

IPC Classes  ?

• E01C 23/04 - Devices for laying reinforcing elements or dowel barsRemovable supports for reinforcing elementsDevices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcement

Abstract

A paving machine that moves in a travel direction spreads, levels and finishes concrete into a form having a generally upwardly exposed, finished concrete surface that terminates in lateral sides. The paving machine has a main frame with first and second bolsters arranged at opposite ends of the main frame. Each set of bolsters has two hydraulic jacking columns used to raise and lower the machine frame. Crawlers attached to the bottom of the jacking columns engage the ground and move the paving machine in the travel direction. A paving kit is secured to the machine frame and has a substantially rigid center portion oriented transverse to the travel direction. It terminates in lateral ends and is disposed between the bolsters. A variable length terminal paving kit is secured to each lateral end of the center portion.

IPC Classes  ?

• E01C 19/00 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving

Abstract

A placer/spreader for distributing already mixed concrete from an access road to a subgrade path to be paved includes a frame having at least two side bolsters standing parallel to the subgrade path and at least two cross beams spanning the subgrade path for forming a conveyor supporting structure. A roll in/roll out conveyor has a receiving end for receiving already mixed concrete from an access road and a discharge end for discharging already mixed concrete to the subgrade path, this conveyor being hinged to enable conformation to differing access road elevations. One of the two side bolsters defines forward and rear transport attachment points with a spatial interval between the transport attachment points. This spatial interval permits the roll in/roll out conveyor to be supported between forward and rear attachment points.

IPC Classes  ?

• E01C 19/20 - Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders
• E01C 19/12 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials

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. We additionally disclose a method of operation the strike off beam from a placer/spreader to prevent the accumulation of excess concrete the path of the following paver.

IPC Classes  ?

• E01C 19/12 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
• E01C 19/00 - Machines, tools, or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving