With Means For In Situ Material Preparation, E.g., Mixing Patents (Class 404/92)
  • Patent number: 6186700
    Abstract: A method of manufacturing and applying a novel pavement and patch material for roadways, driveways, walkways, patch for potholes and like surfaces, including the steps of reducing recycled asphalt roof waste to granules, adding aggregate and other solid recyclable materials to the granules, adding rejuvenating oil, adding emulsifier, adding asphalt concrete oil, adding anti-strip additives, adding liquid silicone, mixing the composition, heating the composition, applying the composition to the roadway or the like and compacting a new paving material.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: February 13, 2001
    Inventor: James S. Omann
  • Patent number: 6183159
    Abstract: A vehicular automotive soil treating machine having a main frame structure provided on an automotive drive means to support thereon a soil feeding stage including at least a soil hopper and an additive hopper for feeding soil and an additive soil improving material, a soil processing stage including a soil processing trough which is internally provided with a mixing device for mixing soil and additive material while being transferred from one to the other end of the soil processing trough, and a processed soil discharging stage including a soil discharging conveyer for transferring processed soil of improved quality in a predetermined direction. The soil processing trough is provided with an inlet opening on the upper side of its fore end portion to receive soil and additive material therethrough, and an outlet opening on the bottom side of its rear end portion to discharge processed soil of improved quality toward the discharging conveyer.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: February 6, 2001
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Hisayoshi Hashimoto, Fujio Sato, Yasuharu Yamamoto, Toshikazu Murai, Tetsushiro Miura, Fumiki Nakagiri, Takami Kusaki, Satoshi Sekino, Kiyonobu Hirose, Yoshio Mizuno, Nobuo Ito, Hideki Fukuzawa
  • Patent number: 6139223
    Abstract: A trench filler having a generally synclinal front section having a solid top and generally downwardly extending sidewalls, a rear section of unitary construction with the front section, the rear section having a solid top and generally downwardly extending sidewalls that are generally longitudinally parallel to each other, and integral running skids beneath the sidewalls that extend forwardly beyond the front section and having upwardly curled ends wherein dirt located beside a trench is gathered by the front section and released through the rear section back into the trench without substantially disturbing the turf located about the trench.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: October 31, 2000
    Inventor: Robert Wayne Snyder
  • Patent number: 6099205
    Abstract: An improved asphalt paver having a remixing conveyor system that is adapted to substantially or entirely eliminating segregation in hot mix asphalt material delivered to the asphalt paver. The remixing conveying system includes at least one pair of parallelly spaced, oppositely pitched, counter-rotating hydraulically driven feed augers having remixing blades that intermittently displace portions of the hot mix asphalt material generally transversely to the direction that the feed augers convey the hot mix asphalt material from a hopper of the asphalt paver to spreading augers near the rear of the machine. Elongate members over the feed augers provide protection from impact forces and overloading and enhancing lateral extraction of hot mix asphalt material from the hopper. An optional feed screen provides flow control of the hot mix asphalt material in the hopper. A kit is provided for converting existing asphalt paving machines to have desegregating capability.
    Type: Grant
    Filed: August 17, 1998
    Date of Patent: August 8, 2000
    Assignee: Cedarapids, Inc.
    Inventors: Charles G. Macku, John A. Trygg
  • Patent number: 6050743
    Abstract: A spreader for spreading treatment products on soil to improve the quality thereof is disclosed. The spreader consists of a vehicle including a frame (103) slidably housing an assembly (105, 106) of a hopper and a metering device. The frame also supports soil shearing means (114) located ahead of the hopper, and mixing means (112) located behind the hopper for mixing together the spread product and the loosened soil. As a result, soil treatment may be enhanced and the nuisance caused by spreading may be diminished.
    Type: Grant
    Filed: May 21, 1998
    Date of Patent: April 18, 2000
    Inventor: Jean Claude Medinger
  • Patent number: 6007272
    Abstract: An improved asphalt paver having a remixing conveyor system that is adapted to substantially or entirely eliminating segregation in hot mix asphalt material delivered to the asphalt paver. The remixing conveying system includes at least one pair of parallelly spaced, oppositely pitched, counter-rotating hydraulically driven feed augers having remixing blades that intermittently displace portions of the hot mix asphalt material generally transversely to the direction that the feed augers convey the hot mix asphalt material from a hopper of the asphalt paver to spreading augers near the rear of the machine. Elongate members over the feed augers provide protection from impact forces and overloading and enhancing lateral extraction of hot mix asphalt material from the hopper. An optional feed screen provides flow control of the hot mix asphalt material in the hopper. A kit is provided for converting existing asphalt paving machines to have desegregating capability.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: December 28, 1999
    Assignee: Cedarapids, Inc.
    Inventors: Charles G. Macku, John A. Trygg
  • Patent number: 5988937
    Abstract: The present invention provides a crawler type soil improving machine for efficiently crushing and mixing soft soil and a soil improving agent in order to regenerate such soil, and features excellent mobility and operability. The soil improving machine comprises: a crusher (4), disposed substantially at the center of a vehicle body (3), for crushing and mixing soil and a soil improving agent; a first hopper (40), disposed at one part of the vehicle body (3), for receiving soil; a second hopper (20), positioned between the crusher (4) and the first hopper (40), for receiving soil improving agent; a crawling member (2), arranged under the second hopper (20) and the vehicle body (3); a drive unit (5), arranged at the other part of the vehicle body (3) and including an engine (6) and hydraulic units (9, 10); and a conveyor (50), positioned below the first and second hoppers (40 and 20).
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: November 23, 1999
    Assignee: Komatsu Ltd.
    Inventors: Yoichi Komoriya, Yasuhiro Yoshida, Taneaki Fujino
  • Patent number: 5980153
    Abstract: A telescoping auger shaft is provided that distributes slurry material throughout a spreader box of variable width in a paving system. The telescoping auger shaft comprises a first shaft positioned coaxially with and engaging a second shaft such that the second shaft is operable to extend with respect to the first shaft while remaining engaged with the first shaft. The two shafts can form a combined shaft of variable length. The telescoping auger shaft further comprises two sections of auger flighting, one coupled to the first shaft and one coupled to the second shaft. The two sections of auger flighting are operable to distribute slurry material in a spreader box when the first shaft and the second shaft are rotated. The first shaft includes a guide portion. A guide element is coupled to second shaft and engages with the guide portion. When the second shaft is extended with respect to the first shaft, the guide element can cause the second shaft to rotate with respect to the first shaft.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: November 9, 1999
    Assignee: Akzo Nobel Asphalt Applications, Inc.
    Inventors: Carl Dean Plemons, Calvin Lynn Stegemoeller
  • Patent number: 5971657
    Abstract: A paving machine forms aqueduct channels using a screed assembly having elongated forming arms, and deposits pavement material onto these arms. As the machine advances, channels are formed in the pavement layer. This results in a porous pavement material having a number of aqueduct channels formed underneath the pavement surface, so that water can percolate downward into the pavement and enter the channels.
    Type: Grant
    Filed: February 12, 1997
    Date of Patent: October 26, 1999
    Inventors: John J. Medico, Jr., Christine Meoli Medico, Peter J. Medico, John C. Medico, III
  • Patent number: 5893677
    Abstract: In a machine used to refurbish roads, having a driver's cab for one operator, an automotive running gear with two axles (4) and a working roller (8) that is mounted to pivot relative to the machine frame and that is enclosed in a hood (7) which defines a working chamber, and having a drive motor (9) with the necessary output to drive the working roller (8) and to power the vehicle's travel, the invention provides that a drive unit containing the working motor (9) is mounted in a pivoting frame (13) and forms a unit (2) that can be pivoted relative to the machine frame (1), that the working roller (8) is also mounted in the pivotable unit (2) and, together with the latter (2), can be pivoted relative to the hood (7), which has a fixed mounting to the machine frame (1), and that the working roller (8) is directly weighted by the unit (2), virtually the entire machine weight being concentrated between the running gear axles (4) and transferred to the pivotable unit (2).
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: April 13, 1999
    Assignee: Wirtgen GmbH
    Inventors: Guenter Haehn, Dieter Simons, Peter Busley
  • Patent number: 5865563
    Abstract: A method for blending and windrowing hot plant mix asphalt which has been deposited onto a roadway in preparation for paving the roadway utilizes a V-shaped plow formed by a first plowing member extending in a first direction, and a second plowing member extending in a second direction, with rearward ends of each of the first and second plowing member being connected at a vertex and the opposite forward ends being spaced apart to form the open side of the V-shaped plow. The V-shaped plow further comprises an opening in the vertex and a movable gate for adjusting the size of the opening in the vertex. The V-shaped plow is further provided with an attachment device for attaching the V-shaped plow to an earth moving implement, such as a front end loader. Movement of the V-shaped plow along the roadway causes the hot asphalt to be thoroughly blended and deposited from the opening into a perfect windrow having the desired amount of asphalt for paving the roadway at issue.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: February 2, 1999
    Inventor: Larry Russell Bonds
  • Patent number: 5795096
    Abstract: A road resurfacing device has a frame on which is mounted a ripper bar for ripping the road surface, to a controlled depth, and behind it a separator for separating coarse and fine material in the road surface such the coarse material is deposited on fine material. The frame is supported by rollers extending across the frame. The ripper bar has depending teeth in rows on both sides of the ripper bar and is rotatable so that either sets of teeth, which may be at different heights, rip the road surface. The separator is formed of ground turning discs mounted on angled shafts to direct material first to one side and then to the other. The ground turning discs rotate counter to the direction of movement of the frame. A method of resurfacing a gravel road includes ripping the surface of the gravel road to break up fine and coarse material near the surface of the gravel road; and separating coarse material from fine material such that coarse material is deposited on top of the fine material.
    Type: Grant
    Filed: September 9, 1996
    Date of Patent: August 18, 1998
    Assignee: LCI International Inc.
    Inventor: Larry G. Culver
  • Patent number: 5791814
    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.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: August 11, 1998
    Assignee: Martec Recycling Corporation
    Inventor: Patrick C. Wiley
  • Patent number: 5765963
    Abstract: An improved ride-on, self propelled, pavement maintenance vehicle suitable for applying liquid sealing material, such as asphalt or coal tar emulsions and other pavement coatings, upon large, relatively flat, surfaces such as automobile parking lots, roadways, etc. is disclosed.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: June 16, 1998
    Inventor: Keith A Roberts
  • Patent number: 5697731
    Abstract: An apparatus and method for blending and windrowing hot plant mix asphalt which has been deposited onto a roadway in preparation for paving the roadway comprises a V-shaped plow formed by a first plowing member extending in a first direction, and a second plowing member extending in a second direction, with rearward ends of each of the first and second plowing member being connected at a vertex and the opposite forward ends being spaced apart to form the open side of the V-shaped plow. The V-shaped plow further comprises an opening in the vertex and a movable gate for adjusting the size of the opening in the vertex. The V-shaped plow is further provided with an attachment device for attaching the V-shaped plow to an earth moving implement, such as a front end loader. Movement of the V-shaped plow along the roadway causes the hot asphalt to be thoroughly blended and deposited from the opening into a perfect windrow having the desired amount of asphalt for paving the roadway at issue.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: December 16, 1997
    Inventor: Larry Russell Bonds
  • Patent number: 5642961
    Abstract: A method for desegregating and conveying aggregate includes reorienting aggregate from a side-by-side lateral orientation to a longitudinal orientation. The longitudinally oriented segregated aggregate may then be thoroughly desegregated in a second conveyor. Reorientation preferably occurs as the aggregate is conveyed along a drag slat conveyor which has a notch in the floor of its discharge end which causes larger aggregate at the lateral edges of the conveyor to drop out of the conveyor after smaller aggregate located between the lateral edges.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: July 1, 1997
    Assignee: Astec Industries, Inc.
    Inventor: Thomas R. Campbell
  • Patent number: 5529247
    Abstract: A device for dispersing and metering fibers which includes a frame, a hopper mounted on the frame and having an inlet opening for receiving fibers therein. A screen is provided through which the fibers from the inlet opening must pass for separating any existing fiber clumps into a size not exceeding a size predetermined by the screen. A primary fluffing device is provided for creating a uniform dispersion of fibers within the hopper. An outlet opening is provided for allowing the fibers to exit the hopper. A controllable metering device is provided in the outlet opening for transporting a metered quantity of fibers out of the hopper through the outlet opening. A housing structure is connected to an outlet end of the metering device, the housing structure including an air inlet opening into the housing and a secondary fluffing device inside of the housing for further reducing in size any fiber clumps to separated discreet fibers.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: June 25, 1996
    Assignee: Interfibe Corporation
    Inventor: Terry L. Mleczewski
  • Patent number: 5441361
    Abstract: A roadworking machine can be converted from front load road planing capability to cold in-place recycling capability by replacing the secondary conveyor on the front end of the machine with a mixer such as a standard pugmill. The machine can be converted in the field simply by detaching the conveyor from a-mounting assembly on the chassis and by attaching the pugmill to the same mounting assembly. The conveyor and pugmill are preferably attachable to the mounting assembly so as to be pivotable with respect to the chassis about both vertical and horizontal axes. The machine as thus constructed permits considerable versatility in both the discharge of milled materials from the secondary conveyor during front load planing and the discharge of recycled materials from the mixer during cold in-place recycling.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: August 15, 1995
    Assignee: Astec Industries, Inc.
    Inventor: Thomas R. Campbell
  • Patent number: 5407139
    Abstract: A device for dispersing and metering fibers which includes a frame, and a hopper mounted on the frame and having an inlet opening for receiving fibers therein. A screen is provided through which the fibers from the inlet opening must pass for separating any existing fiber clumps into a size not exceeding a size predetermined by the screen. A primary fluffing device is provided for creating a uniform dispersion of fibers within the hopper. An outlet opening is provided for allowing the fibers to exit the hopper. A controllable metering device is provided in the outlet opening for transporting a metered quantity of fibers out of the hopper through the outlet opening. A housing structure is connected to an outlet end of the metering device, the housing structure including an air inlet opening into the housing and a secondary fluffing device inside of the housing for further reducing in size any fiber clumps to separated discreet fibers.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: April 18, 1995
    Assignee: Interfibe Corporation
    Inventor: Terry L. Mleczewski
  • Patent number: 5360287
    Abstract: An apparatus for dispensing, mixing and applying coating constituents to traffic surfaces has a carriage to which are connected 1) at least portions of a dispensing system that serves to dispense coating constituents from one or more reservoirs onto traffic surface portions that are to be coated, and 2) at least one rotatable set of mixing and applicator tools that extend in a radial array beneath the carriage. A wheel supported vehicle such as a truck or tractor is connectable to the carriage for guiding and moving the carriage across traffic surface areas that are to be coated. The vehicle also may be used 1) to support at least portions of the carriage, 2) to support at least portions of vehicle-connected components of the apparatus, and/or 3) to provide a source of power or to support at least portions of a source of power for operating vehicle-connected and/or carriage-connected components of the apparatus.
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: November 1, 1994
    Inventor: Alexander Laditka
  • Patent number: 5354145
    Abstract: An ambient temperature applied asphalt emulsion material is disclosed for repairing traffic-bearing surfaces. A method of applying the asphalt emulsion material for quick hardening by the addition of a hardening agent is shown. An applicator wand which applies the emulsion and hardening agent mixture to a surface and smooths the applied material for hardening level with the surface.
    Type: Grant
    Filed: December 10, 1991
    Date of Patent: October 11, 1994
    Inventor: Carl L. Sterner
  • Patent number: 5219450
    Abstract: A movable asphalt mixing plant which is towed behind a milling machine. The mixing plant includes an input conveyor which receives the crushed aggregate from the milling machine. The aggregate is then introduced into a pug mill carried by the mobile plant. A heated storage tank and appropriate pumps and conduits for asphaltic cement located on the mobile plant allow the asphaltic cement to be mixed with the aggregate in the pug mill. The amount of asphaltic cement added to the aggregate may be controlled by a microprocessor which receives input regarding the production rate and input weight of aggregate. Asphaltic paving material produced by the pug mill is dispensed from the rear of the plant. A heating system employing hot circulating oil is also provided to ensure that the pumps and conduits for the asphaltic cement flow freely. A steering mechanism is provided for the plant to ensure centering for proper reception of aggregate and dispensing of paving material.
    Type: Grant
    Filed: August 6, 1992
    Date of Patent: June 15, 1993
    Inventor: John H. Thurk
  • Patent number: 5131788
    Abstract: A mobile, self propelled pothole patching vehicle is provided having a truck chassis and cab. The pothole patching vehicle includes an asphalt conveyor system for delivering asphalt to the road surface from a storage hopper mounted on the chassis. The conveyor system is uncoupled from the hopper and is movable with respect to the rest of the vehicle both longitudinally along the axis of the vehicle and transversely in a side-to-side swivelling motion. The conveyor is provided with a conveyor housing having a slotted top panel through which the asphalt passes into the conveyor interior. A conveyor mount slidably receives the conveyor and is pivotally coupled to the discharge port and the chassis for lateral swivelling motion of the extendible conveyor. During longitudinal and lateral movement of the conveyor, the discharge port opening into the housing interior remains within the ambit of the slotted portion of the top panel for continuous delivery of asphalt.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: July 21, 1992
    Inventor: Leslie Hulicsko
  • Patent number: 5114268
    Abstract: An apparatus for applying a traffic stripe includes a vehicle having a pair of front wheels and a pair of rear wheels and members, disposed on the vehicle, for steering the front wheels. Also included is a traffic stripe applying system, disposed outward of the front wheels and adjacent to one of the front wheels, for applying a traffic stripe to a road. A connector pivotally connects this applying system to the vehicle and defines an axis about which the applying system pivots relative to the vehicle. In addition, connected to the applying system, disposed forward of the pivot axis and acting in response to the steering of the front wheels, is a member or members for turning the applying system in the same direction as the front wheels when the front wheels are turned. In a preferred embodiment, this turning member or members also turns the traffic strip applying system at a greater angle than the front wheels when the front wheels are turned in a direction towards the applying system.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: May 19, 1992
    Assignee: MAC Stripers, Inc.
    Inventor: Forrest Marcato
  • Patent number: 5085537
    Abstract: A system for applying a coating to a traffic surface utilizes a power driven unit that dispenses coating constituents onto the traffic surface as the unit moves forwardly across the traffic surface along a path of travel. The unit includes a wheel supported transport carriage beneath which is provided at least one set of applicator tools that rotates relative to the carriage about a substantially vertically extending center axis. A hollow, tubular stub shaft and bearings connect the set of tools to the carriage for rotation about the center axis.
    Type: Grant
    Filed: September 24, 1990
    Date of Patent: February 4, 1992
    Inventor: Alexander Laditka
  • Patent number: 5069578
    Abstract: The method comprises spreading a layer of bituminous binding material on the surface, spreading at least one layer of aggregates on the layer of binding material, and compacting the layer of aggregates in contact with the layer of binding material. The aggregates consist of loose chips covered with a mixture, which has a pasty consistency, of bitumen and of pulverulent material. The layer of binding material contains at least 11% of the total quantity of bitumen used in the coating. The operations of spreading the binding material and the aggregates and of compacting and surfacing the coating are performed in succession within a period of less than 5 seconds, the speed of advance of the site being at least ten meters per minute.
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: December 3, 1991
    Assignee: Screg Routes et. Travaux Publics
    Inventors: Pierre Bense, Jean-Francois Patte
  • Patent number: 5052853
    Abstract: Apparatus for smoothing a gravel road comprises a mat which incorporates a series of wave-form members, typically of flexible material such as rubber. The mat is towed over the road surface with the result that the crests of the wave-form members dig into corrugations in the surface and disturb the gravel. The disturbed gravel can flow upwardly through the spaces between the wave-form members.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: October 1, 1991
    Assignee: Matador Industries (Proprietary) Limited
    Inventor: Anthony V. Trowbridge
  • Patent number: 5035534
    Abstract: An apparatus provided with a hopper having a capacity substantially equal to the capacity of a supply truck for receiving asphalt-aggregate material. A transversely disposed screw auger is provided for remixing the asphalt-aggregate material in the hopper prior to its discharge. In one form of the invention, the apparatus forms part of a self-propelled storage vehicle which transfers the material from the supply truck to a conventional finishing machine.
    Type: Grant
    Filed: September 11, 1989
    Date of Patent: July 30, 1991
    Assignee: Barber-Greene Company
    Inventors: James D. Brock, Donald W. Smith
  • Patent number: 5002426
    Abstract: A revolving paddle mixer for re-mixing a hot asphalt mix deposited in the hopper of a road paving machine. The mixer takes the form of a plurality of paddles angularly positioned relative to each other and mounted on a revolving shaft adjacent to the conveyor for transporting the asphalt mix material to the rotating auger. The resultant re-mixture is more uniform and dense so that a smooth pavement is laid on the roadway.
    Type: Grant
    Filed: December 15, 1989
    Date of Patent: March 26, 1991
    Assignee: Blaw-Knox Construction Equipment Corporation
    Inventors: Robert L. Brown, Tom Thomason
  • Patent number: 5000615
    Abstract: A system for removing and relaying asphaltic concrete pavement using a planer pulling a laydown machine and pushing equipment for (a) screening the cuttings produced by the planer, and (b) mixing the screened cutting, with a suitable binder, wherein the mix is conveyed back to the laydown machine.
    Type: Grant
    Filed: January 9, 1990
    Date of Patent: March 19, 1991
    Assignee: CMI Corporation
    Inventor: Stuart W. Murray
  • Patent number: 4990025
    Abstract: A tilling/stabilization apparatus for tilling and stabilizing a roadbed or other base layer of soil includes a large manifold for receiving metered amounts of pressurized fly ash or other powdery filler, binder, and/or sealer material and injecting it in the vicinity of a rotating tiller that is tilling the roadbed. A water manifold passing through a housing surrounding the tiller produces a dense water mist inside the housing, causing dust to settle and providing a cementitious mix of the fly ash with the tilled roadbase material. Reliable, economical filling of roads and stabilization of a road base is achieved.
    Type: Grant
    Filed: May 3, 1989
    Date of Patent: February 5, 1991
    Assignee: Soil Stabilization Inc.
    Inventors: Bryant C. Young, Arne L. Harris
  • Patent number: 4979847
    Abstract: An apparatus for pulverizing and spreading the gravel ridge formed by plowing the shoulder portion of a gravel road onto the travelled portion thereof includes a frame for towing behind a vehicle, vertically adjustable rear wheels on the frame, and a pair of hydraulically driven, transversely extending, blade carrying drums. By towing the frame along a gravel road while rotating the drums, the paddle-like blades pulverize and spread the gravel ridge.
    Type: Grant
    Filed: June 23, 1989
    Date of Patent: December 25, 1990
    Inventor: David L. Simonson
  • Patent number: 4971476
    Abstract: A road reconditioning plant for excavating an existing roadway and using excavated roadway material for forming a renewed roadway, the road reconditioning plant includes; an excavator capable of releasing existing roadway material to a depth of at least about 25 cm while subdividing released material to form aggregate and a chassis for carrying the excavator for advancing movement along the roadway; a drive for advancing the chassis along the existing roadway; an adjustable leveling jack on the chassis remote from the excavator for positioning the excavator to excavate roadway material to a depth of at least about 25 cm; a housing including a blade member spaced from the excavator for forming a segregating chamber wherein released roadway material can pass in a downstream direction beyond the excavator; a blender for receiving aggregate discharge for the excavator, the blender receives cement and water for forming a binder to be blended with aggregate while advanced rearwardly along the chassis in relation to
    Type: Grant
    Filed: December 15, 1988
    Date of Patent: November 20, 1990
    Assignee: Beugnet
    Inventor: Roger Guillon
  • Patent number: 4964752
    Abstract: A method, apparatus and material for filling or surfacing fissures, openings and cavities in a pavement surface. The method comprises the steps of preparing a volume of water, heated to a temperature of 110-210 degrees F, and mixing a given quantity of bituminous sandstone therein in a ratio of 20 to 56% water by weight. This mixture is continuously agitated to develop a slurry which is capable of being pumped through a conduit to the repair location or site. Apparatus is disclosed for preparing the subject slurry and for enabling a continuous repair operation within a self-contained system.
    Type: Grant
    Filed: August 21, 1989
    Date of Patent: October 23, 1990
    Inventors: Myrle E. Astrope, Norman P. Bushman
  • Patent number: 4946307
    Abstract: An apparatus is disclosed for the cold, in-place recycling of asphalt paving of an asphalt roadway. The apparatus is self-propelled, and it includes a cylindrical milling drum mounted at a medial location along its longitudinal length and which serves to remove a thickness of the asphalt paving and break the same into particles as the apparatus moves forwardly along the roadway. The particles are lifted to a separating screen which is positioned forwardly of the drum, and the particles are thereby separated into a first portion of relatively small particles suitable for recycling and a second portion of oversized particles. The first portion is delivered to the rear end of the apparatus where it is mixed with a suitable liquid additive, and then discharged onto the roadway. A following paver then forms the discharged material into new paving. The second portion of oversized particles is discharged onto the roadway at a location in front of the milling drum.
    Type: Grant
    Filed: August 15, 1989
    Date of Patent: August 7, 1990
    Assignee: Astec Industries, Inc.
    Inventor: Herbert E. Jakob
  • Patent number: 4944631
    Abstract: A machine is provided for constructing, in particular, redeveloping, the constructional layers of roads, preferably by re-using the old material removed from the road; wherein a receiving silo for the old material, which is mounted on a chassis of a motor-driven running gear, is feedable, preferably in regulatable quantities, to a horizontal stream crusher; said crusher being in connection, via a dosaging conveying device, with a mixer, also mounted on said chassis, whereto additional material components from at least one additional tank or silo, supported on said chassis, may be fed and wherefrom the prepared material ready for distribution is fed, by way of a conveyor worm, to a screed drawn along behind said chassis. Such a machine permits, in addition to the cold recycling of asphalt, also the construction of cold-mix foundation layers as well as a stabilization and a direct distribution of practically any supporting-layer materials.
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: July 31, 1990
    Assignee: Egli AG
    Inventor: Urs Egli
  • Patent number: 4927293
    Abstract: A remediating apparatus has a conveyor which moves contaminated material, a main hopper which holds a load of contaminated material and dispenses the material onto the conveyor at a receiving location, and an auxiliary hopper adjacent the main hopper which holds a load of an absorbent material and dispenses the material onto the contaminated material as the material is moved toward a transfer location. The apparatus also has an oxidizing material applicator and an aerator associated with an elongated mixing chamber. Also, a mixing and conveying auger rotatably mounted in the mixing chamber concurrently mixes the contaminated and absorbent material received in the mixing chamber at the transfer location and transports them from the transfer location to a deposit location. Spray nozzles of the applicator connected in communication with the mixing chamber spray pressurized oxidizing material on the mixture of contaminated and absorbent materials.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: May 22, 1990
    Inventor: Randy P. Campbell
  • Patent number: 4820078
    Abstract: Apparatus for patching or filling paved road surface cracks or joints includes means for simultaneously dispensing molten asphalt bitumen and monofilament strands of reinforcing fiber, wherein fiber roving is chopped into discrete segments and intermixed with the molten asphalt as the patching or joint filling application occurs. The apparatus is intended to be mounted on a mobile rig to facilitate its use, and includes an arrangement wherein the molten asphalt is continuously pumped out to a dispensing nozzle assembly and back to the storage reservoir on the rig whereby the flow maintains a continuous circuit from which the molten asphalt is selectively withdrawn for use in patching and filling operations. Also included is a means for selectively purging the circuit after use of the apparatus, and the method of utilizing the apparatus.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: April 11, 1989
    Inventor: George D. Brocious
  • Patent number: 4793730
    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.
    Type: Grant
    Filed: August 13, 1984
    Date of Patent: December 27, 1988
    Inventor: Adam F. Butch
  • Patent number: 4784518
    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.
    Type: Grant
    Filed: November 17, 1987
    Date of Patent: November 15, 1988
    Assignee: Cutler Repaving, Inc.
    Inventor: Earl F. Cutler
  • Patent number: 4780022
    Abstract: Disclosed is a road surface layer reproducing apparatus which comprises a mixture hopper, a scarifier, and a mixer means including a first mixer of single-shaft rotor system and a second mixer of twin-shaft rotor system.This apparatus is characteristic of a mixture hopper swingable laterally around its hopper supporting shaft, a sacrifier whose claws are so loosely fitted that the tip ends of the claws can follow up the contour of a road being remedied, a first mixer provided with a single-shaft rotor with a depth-measuring device for controlling the depth of penetration of the rotor into the asphalt of the road and mounted with screws for forming a windrow of an asphalt mixture to the center of the main body of the apparatus and a second mixer provided with parallel mounted twin-rotors which is vertically movable by a three-point supporting mechanism.
    Type: Grant
    Filed: September 24, 1987
    Date of Patent: October 25, 1988
    Assignee: Taisei Road Construction Company, Ltd.
    Inventors: Tatsuhiko Ohiba, Ken-ichi Igarashi
  • Patent number: 4714374
    Abstract: A road surface layer reproducing machine is characterized by its rotor unit which is provided with a mixing chamber housing the rotors for scarifying and mixing the asphalt pavement in an atmosphere of a high temperature higher than the temperature of open air to facilitate such a scarifying and mixing operation of the asphalt pavement, which mixing chamber is kept at such a high temperature by the operation of heating means such as a heater and a hot air blower, and is vertically driven through power cylinders.
    Type: Grant
    Filed: July 2, 1986
    Date of Patent: December 22, 1987
    Assignee: Taisei Road Construction Co., Ltd.
    Inventor: Tohru Mihara
  • Patent number: 4704045
    Abstract: An apparatus and method for pulverizing asphalt on roadways and similar applications. The asphalt is pulverized by a rotating drum with removable cutting tips which engage a soften underside of the roadway prior to engaging a harder more compact top surface of the roadway. The apparatus designed for receiving and rotating various widths of drums and adaptable for moving the drum along the width of a mobile piece of equipment supporting the apparatus and adjacent a curb and gutter of a roadway.
    Type: Grant
    Filed: July 3, 1986
    Date of Patent: November 3, 1987
    Inventors: Thomas M. Taylor, Alfred W. Taylor
  • Patent number: 4678363
    Abstract: An improved moveable road repair and surfacing vehicle of the type having a frame, an aggregate material hopper mounted on a frame, a container on the vehicle for binder material such as asphalt, conveyor means associated with the hopper for carrying aggregate material, a discharge chute associated with the conveyor means for receiving aggregate material carried thereon and directing material downwardly, a discharge outlet on the chute for dispensing the aggregate material therefrom for deposit on a roadway surface, and means for spraying binder material on the dispensed aggregate material.
    Type: Grant
    Filed: June 12, 1986
    Date of Patent: July 7, 1987
    Inventor: Carl L. Sterner
  • Patent number: 4637753
    Abstract: A road planar which includes a secondary cutter in the planar behind the primary cutter with grids between the primary and secondary cutters and following the secondary cutter to size and cooperate with the secondary cutter in reducing the particle size of pavement material removed by the primary cutter. The primary cutter is rotated in an up cutting direction and breaker bars are incorporated in the planar adjacent the primary cutter to further assist in breaking up the removed pavement material.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: January 20, 1987
    Assignee: CMI Corporation
    Inventor: George W. Swisher, Jr.
  • Patent number: 4619550
    Abstract: Fragmented old asphaltic concrete or the like is recycled into new hot-mix by temporarily separating larger pieces from the smaller fragments, generating heat internally within the large pieces with penetrating microwave energy, separately heating the smaller fragments by exposure to hot gas, and then recombining and remixing the separately heated components. The old concrete can be heated very rapidly, highly uniformly and economically while avoiding asphalt degradation and pollution problems that can be caused by exposure to extreme high temperature and while avoiding the relatively high costs of heating the entire volume with microwave energy.
    Type: Grant
    Filed: October 5, 1984
    Date of Patent: October 28, 1986
    Assignee: CD High Technology, Inc.
    Inventor: Morris R. Jeppson
  • Patent number: 4473320
    Abstract: A method and apparatus are disclosed for resurfacing the paved area in a continuous operation. The apparatus includes means for planing a surface layer of the paved area to provide crushed particle material of a suitable size. An aggregate dispensing system is included for continuously depositing a predetermined quantity of aggregate onto the area to be resurfaced. A binary dispensing system adds binder to the crushed particle material and the aggregate which is then mixed by mixing system to form a new surfacing mixture at the site. The surfacing mixture is then spread and compacted by a surfacing mixture distribution system in order to form a usable surface layer.
    Type: Grant
    Filed: September 8, 1981
    Date of Patent: September 25, 1984
    Inventor: Archie J. Register
  • Patent number: 4453856
    Abstract: A self-propelled pavement lane apparatus comprising a radial-frequency microwave generator extending across one lane of the roadway having an antenna with a slotted waveguide directed toward the roadway for heating a lane-wide stretch of the roadway. A ripping device is provided behind the microwave generator to rip up pavement which was heated by the microwave generator. A screw conveyor conveys the heated and ripped pavement inwardly toward a central axis of the apparatus where it is fed by a chute to a mixing chamber containing counter-rotating mixing blades. Fresh bituminous binder and/or filler may be added to the mixing chamber to be mixed with the ripped pavement which is then discharged from the mixing chamber by a second screw conveyor, to be distributed across the lane. Following the second screw conveyor is a finished plate for initially compacting the refinished surface.
    Type: Grant
    Filed: June 5, 1981
    Date of Patent: June 12, 1984
    Assignee: Autostrade-Concessioni e Costruzioni Autostrade S.p.A.
    Inventors: Mario Chiostri, Pierluigi Ceseri
  • Patent number: 4407605
    Abstract: The invention relates to a method for repairing ruptured longitudinal seams or cracks in road surfaces which consist of a thermoplastic material and particularly of an asphalt coating including bitumen and mineral constituents, by which, under the application of heat, new coating material is applied and consolidated in the area of the longitudinal seams or cracks, wherein at first mud and humidity is removed from, and out of, said longitudinal seam or crack, said longitudinal seam is subsequently softened by heating, said softened coating is loosened from the underground and is compounded with the new material and/or liquid or liquified aggregates and is finally incorporated and consolidated again.
    Type: Grant
    Filed: June 12, 1981
    Date of Patent: October 4, 1983
    Inventor: Reinhard Wirtgen
  • Patent number: 4335974
    Abstract: The invention relates to a machine for providing milled or peeled road surfaces with a coating, comprising a chassis including a drive motor and having in the front portion thereof a supply or storage container for the material to be applied and in the rear portion thereof a plank-shaped finisher wherein between said supply container and said finisher a mixing device is disposed, which is provided with a first conveyor device feeding the material from said supply container and a second conveyor device feeding the milled-off or peeled material from the ground.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: June 22, 1982
    Inventor: Reinhard Wirtgen