US2394017A - Road building machine - Google Patents

Road building machine Download PDF

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US2394017A
US2394017A US434859A US43485942A US2394017A US 2394017 A US2394017 A US 2394017A US 434859 A US434859 A US 434859A US 43485942 A US43485942 A US 43485942A US 2394017 A US2394017 A US 2394017A
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frame
machine
road
side wall
mixing
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US434859A
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Harry J Seaman
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/065—Recycling in place or on the road, i.e. hot or cold reprocessing of paving in situ or on the traffic surface, with or without adding virgin material or lifting of salvaged material; Repairs or resurfacing involving at least partial reprocessing of the existing paving
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C21/00—Apparatus or processes for surface soil stabilisation for road building or like purposes, e.g. mixing local aggregate with binder

Definitions

  • the present invention relates to road building apparatus, and has for an object to provide a simple and efficient machine which, during its movement along a roadway, will mix and otherwise treat surfacing material on the roadway to form a paving layer.
  • Another object is to provide a road building machine by which a fluid binder is effectively and economically applied to the surfacing material while the material is undergoing a mixing action.
  • the invention further consists in the several ⁇ in section, and l Fig. 2 is a longitudinal sectional elevation taken generally along the line 2-2 of Fig. 1.
  • I0 designates an elongated frame adapted to be moved over a road surface or roadbed II which is to be treated.
  • the frame includes parallel side wall members I2, the lower edges of which normally extend close to the road surface I I.
  • a central extension I3 which is supported on asteering truck I4 having a pair of closely spaced pneumatically-tired wheels I5, the truck being swiveled on the extension to swing on a vertical axis. and the frame extension being vertically shiftable on the truck, as by a hydraulic jack or lift I3.
  • the front truck I4 is adapted to be coupled to a tractor or other draft device, not shown.
  • the rear ends'of the side wall member I2 are connected by an end wall member I'I, the lower edge of which is spaced above the road surface to form a strike-off.
  • a transversely extending roller I 8 spaced rearwardly of the end wall member I l, the'roller being pivotally connected at its ends to arms I3, the front ends of which are pivotally connected to the side wall members I2.
  • the rear end of the frame is vertically adjustable with respect to the roller, as by means of hydraulic jacks or lifts engaging a cross bar 2
  • the roller I8 is adapted to ride on the finished surfacing material, which is processed as hereinafter described, and forms a compacting means for this material.
  • the side wall members carry respective pneumatically-tired roadvwheels 22 which are normally inactive, although, if desired, they may remain in contact with the road surface to provide support for the frame.
  • Each wheel is mount- Ved on a swingable arm 23 pivotally secured to the side wall member and angularly adjusted as by means of a hydraulic Jack or lift 24.
  • scraper blades orwings 25 which are swingable at 23 on vertical axes.
  • the scraper blades normally diverge in a forward direction, as seen in Fig. l. to gather loose surfacing material 21 resting on the roadbed and deflect lthis material inwardly for entrance between the side wall members of' the machine.
  • the scraper blades are suitably retained in angular position, as by releasable brace bars 28 secured to the frame. ⁇
  • the-scraper blades can be swung inwardly, ras to the dotted line position shown in Fig. 1., In some cases, the scraper blades may be omitted, particularly if the machine frame is of considerable width, or if the bed of loose surfacing material is restricted in width.
  • the loose surfacing material usually consists of a mineral aggregate, and in some instances some or all of this material may be obtained by scarifying the old road to a sufficient depth.
  • the frame carries a transversely extending heater or burner 23', the
  • the heater is used in cold weather and also'whenever heating of the surfacing material will facilitate processing.
  • Each mixing device includes a mixing rotor having a transverse horizontal drum shaft 33 journalled at opposite endsl in the side wall members I2, the shaft being provided with numerous forwardly hooked mixing and pulverizing teeth or tines 34.
  • the shafts 33 are rotatable in the direction indicated by arrows and are driven through respective transmissions 315, as of the bevel gear type, secured to one of the side wall members.
  • the tines 34 are resilient sections 31 for access to the rotor andy for yielding to obstructions. the lowerl rear edge of the hood forming a yieldable strike-off.
  • the sloping rear walls of the hood present a material-pulverizing impact surface.
  • the mixing rotors are power-driven, as by an internal combustion engine 88 carried by one of the side wall members I2, theengine having a' gearing connection 39 with a longitudinal drive shaft 40 which is coupled to the bevel gear transmissions 35.
  • the direction of rotation of the mixing rotors is such as to aid the propulsion of the machine.
  • a transversely extending spray pipe 4i provided ⁇ with a series of dwnwardlydirected spray nozzles 42, the nozzles preferably being of the flat type and obliquely arranged to improve distribution.
  • the spray pipe fs suitably supported Aas by ⁇ attachment to the side wall members i2 of the frame.
  • a similar nozzle-carrying spray pipe 43 isv arranged in like manner under the hood of the middle mixing device 8l.
  • 'I'he spray pipes are adapted to spray a suitable liquid binder, such as oil or asphalt emulsion, into the surfacing material while it is in suspension and undergoing themixing action.
  • the spray pipes are connected by piping 44 to an engine-driven pump 48 which draws the liquid from a tank 46 mounti8 and rear wheel jacks 24, the rear wheels being' usually raised out of contact with the road surface or base li, as seen in Fig. 2.
  • the lower edges of the side wall members I2 are close to the road surface.
  • 'I'he rear compacting roller i8 is lowered by the jacks 20 to rollably support the rear portion of the frame, and may require readjustment after the roller reaches the surfacing material. If desired, the road wheels may remain in contact with the road surface tol furnish support for the rear end of the frame.
  • the front scraper blades or wings .25 are swung tothe full line angular position of Fig. ⁇ 1, and are heldin place by the brace bars 28.
  • the frame I8 is drawn forwardlyv over the road surface Il by a tractor or other suitable draft device, not shown.
  • the scraper blades or wings gather the loose surfacing material which has been deposited in a bed on the roadway and deflect it toward the center of the path of the machine.
  • the burner 29 passes over the loose surfacing material to heat the same, and
  • the material is then subjected to the action of the front mixing device 30.
  • 'I'he rotary tines of this mixing device dig into the material and throw it violently against. the inner-walls of the hood, the material thus being thoroughly mixed and pulverized.
  • the liquid binder sprayed from the nozzles 42 is thoroughly mixed with the surfacing material while this material is in suspension.
  • the surfacing material is then further mixed by the middle mixing device 3
  • the material isflnally mixed by the rear mixing device 82.
  • the screen 41 When the screen 41 is used, the effect will be to place the coarse material at the base of the mix.
  • the bed of surfacing material, with the incorporated binder, is struck off by the rear end wall I1 ofthe frame, the action of the striking o being to thin and widen the bed.
  • the surfacing material is finally compacted by the roller I8 to forma completed paving layer or course R. It will be seen that this paving layer is formed in one passage of the machine.
  • the machine may also be used in surfacing other areas, such as airport'landing strips and runways.
  • the forwardly diverging scraper blades 25 not only permit a substantial reduction in the length of the mixing rotors but also serve to in crease the average thickness of the bed of loose material so as to obtain more efcient operation of the mixing rotors.
  • the frame I0 For road transport of the machine the frame I0 is raised above the road surface by operating the jack I8y for the front wheels and the jacks 24 for the rear road wheels 22, the latter wheels then supporting the frame.
  • the roller I8 is raised out of contact with the road by the jacks 20, and the scraper blades are swung inwardly. The machine may then be towed at a fair rate of speed.
  • a road building machine comprising a frame adapted to move over a surface carrying material to be treated, a rotor extending transversely of said frame and having projections for mixing and throwing the material, the lower portion of said rotor being movable rearwardly during rotation, a hood for said rotor, said hood having a downwardly projecting rear wall portion forming a material-pulverizing impact surface and forming a strike-off to the rear of said rotor, and a screen interposed between said ,rotor and said rear wall portion to limit the size of the pieces of material thrown against said rear wall portion and to cause the smaller pieces passed through the screen to overlie the larger pieces at the strike-off.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Road Repair (AREA)
  • Road Paving Machines (AREA)

Description

Feb. 5, 1946. H. .1. sl-:AMAN
ROAD BUILDING MACHINE Filed March 16, 1942 uw. mw. n.
Alli
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-lNVENTOR m H RYJ SEAMAN ATTORNEY fw ,BY
Patented Feb. l5, 1946 UNITED STATES PATENT OFFICE ...its Application March lkzi: No. 434,859
The present invention relates to road building apparatus, and has for an object to provide a simple and efficient machine which, during its movement along a roadway, will mix and otherwise treat surfacing material on the roadway to form a paving layer.
Another object is to provide a road building machine by which a fluid binder is effectively and economically applied to the surfacing material while the material is undergoing a mixing action.
The invention further consists in the several `in section, and l Fig. 2 is a longitudinal sectional elevation taken generally along the line 2-2 of Fig. 1.
In the drawing, I0 designates an elongated frame adapted to be moved over a road surface or roadbed II which is to be treated. The frame includes parallel side wall members I2, the lower edges of which normally extend close to the road surface I I. At the front of thel frame is a central extension I3 which is supported on asteering truck I4 having a pair of closely spaced pneumatically-tired wheels I5, the truck being swiveled on the extension to swing on a vertical axis. and the frame extension being vertically shiftable on the truck, as by a hydraulic jack or lift I3. The front truck I4 is adapted to be coupled to a tractor or other draft device, not shown. The rear ends'of the side wall member I2 are connected by an end wall member I'I, the lower edge of which is spaced above the road surface to form a strike-off. At the rear end of the frame is a transversely extending roller I 8 spaced rearwardly of the end wall member I l, the'roller being pivotally connected at its ends to arms I3, the front ends of which are pivotally connected to the side wall members I2. The rear end of the frame is vertically adjustable with respect to the roller, as by means of hydraulic jacks or lifts engaging a cross bar 2| secured to the arms I 3. The roller I8 is adapted to ride on the finished surfacing material, which is processed as hereinafter described, and forms a compacting means for this material.
At their outer sides and near their rear ends the side wall members carry respective pneumatically-tired roadvwheels 22 which are normally inactive, although, if desired, they may remain in contact with the road surface to provide support for the frame. Each wheel is mount- Ved on a swingable arm 23 pivotally secured to the side wall member and angularly adjusted as by means of a hydraulic Jack or lift 24.
To the front ends of the side wall members I2 are pivotally secured the rear ends of respective scraper blades orwings 25 which are swingable at 23 on vertical axes. The scraper blades normally diverge in a forward direction, as seen in Fig. l. to gather loose surfacing material 21 resting on the roadbed and deflect lthis material inwardly for entrance between the side wall members of' the machine. The scraper blades are suitably retained in angular position, as by releasable brace bars 28 secured to the frame.` For road transport of the machine the-scraper blades can be swung inwardly, ras to the dotted line position shown in Fig. 1., In some cases, the scraper blades may be omitted, particularly if the machine frame is of considerable width, or if the bed of loose surfacing material is restricted in width.
The loose surfacing material usually consists of a mineral aggregate, and in some instances some or all of this material may be obtained by scarifying the old road to a sufficient depth.
Behind the front truck I4, the frame carries a transversely extending heater or burner 23', the
flames from which impinge downwardly on the i loose surfacing material to heat and dry'the same.
30 The heater is used in cold weather and also'whenever heating of the surfacing material will facilitate processing.
Mixing devices 30, 3I and 32 extend transversely of the machine frame and are spaced longitudinally of the frame. Each mixing device includes a mixing rotor having a transverse horizontal drum shaft 33 journalled at opposite endsl in the side wall members I2, the shaft being provided with numerous forwardly hooked mixing and pulverizing teeth or tines 34. The shafts 33 are rotatable in the direction indicated by arrows and are driven through respective transmissions 315, as of the bevel gear type, secured to one of the side wall members. The tines 34 are resilient sections 31 for access to the rotor andy for yielding to obstructions. the lowerl rear edge of the hood forming a yieldable strike-off. The sloping rear walls of the hood present a material-pulverizing impact surface.
-The mixing rotors are power-driven, as by an internal combustion engine 88 carried by one of the side wall members I2, theengine having a' gearing connection 39 with a longitudinal drive shaft 40 which is coupled to the bevel gear transmissions 35. The direction of rotation of the mixing rotors is such as to aid the propulsion of the machine.
Under the hood 86 of the front mixing device 30 and to the rear of the associated rotor is a transversely extending spray pipe 4i provided` with a series of dwnwardlydirected spray nozzles 42, the nozzles preferably being of the flat type and obliquely arranged to improve distribution. The spray pipe fs suitably supported Aas by`attachment to the side wall members i2 of the frame. Preferably a similar nozzle-carrying spray pipe 43 isv arranged in like manner under the hood of the middle mixing device 8l. 'I'he spray pipes are adapted to spray a suitable liquid binder, such as oil or asphalt emulsion, into the surfacing material while it is in suspension and undergoing themixing action. The spray pipes are connected by piping 44 to an engine-driven pump 48 which draws the liquid from a tank 46 mounti8 and rear wheel jacks 24, the rear wheels being' usually raised out of contact with the road surface or base li, as seen in Fig. 2. In this posi- `tion the lower edges of the side wall members I2 are close to the road surface. 'I'he rear compacting roller i8 is lowered by the jacks 20 to rollably support the rear portion of the frame, and may require readjustment after the roller reaches the surfacing material. If desired, the road wheels may remain in contact with the road surface tol furnish support for the rear end of the frame. The front scraper blades or wings .25 are swung tothe full line angular position of Fig.` 1, and are heldin place by the brace bars 28.
In operation, the frame I8 is drawn forwardlyv over the road surface Il by a tractor or other suitable draft device, not shown. The scraper blades or wings gather the loose surfacing material which has been deposited in a bed on the roadway and deflect it toward the center of the path of the machine. The burner 29 passes over the loose surfacing material to heat the same, and
the material is then subjected to the action of the front mixing device 30. 'I'he rotary tines of this mixing device dig into the material and throw it violently against. the inner-walls of the hood, the material thus being thoroughly mixed and pulverized. The liquid binder sprayed from the nozzles 42 is thoroughly mixed with the surfacing material while this material is in suspension. The surfacing material is then further mixed by the middle mixing device 3| and additional liquid binder is incorporated, after which.
the material isflnally mixed by the rear mixing device 82. When the screen 41 is used, the effect will be to place the coarse material at the base of the mix. The bed of surfacing material, with the incorporated binder, is struck off by the rear end wall I1 ofthe frame, the action of the striking o being to thin and widen the bed. The surfacing material is finally compacted by the roller I8 to forma completed paving layer or course R. It will be seen that this paving layer is formed in one passage of the machine. The machine may also be used in surfacing other areas, such as airport'landing strips and runways. The forwardly diverging scraper blades 25 not only permit a substantial reduction in the length of the mixing rotors but also serve to in crease the average thickness of the bed of loose material so as to obtain more efcient operation of the mixing rotors. y
For road transport of the machine the frame I0 is raised above the road surface by operating the jack I8y for the front wheels and the jacks 24 for the rear road wheels 22, the latter wheels then supporting the frame. The roller I8 is raised out of contact with the road by the jacks 20, and the scraper blades are swung inwardly. The machine may then be towed at a fair rate of speed.
One specific embodiment of the invention has been shown and described, but it will be understood that changes and modifications may be made therein within the spirit of the invention.
WhatA I claim as new and desire to secure by Letters Patent is:
A road building machine comprising a frame adapted to move over a surface carrying material to be treated, a rotor extending transversely of said frame and having projections for mixing and throwing the material, the lower portion of said rotor being movable rearwardly during rotation, a hood for said rotor, said hood having a downwardly projecting rear wall portion forming a material-pulverizing impact surface and forming a strike-off to the rear of said rotor, and a screen interposed between said ,rotor and said rear wall portion to limit the size of the pieces of material thrown against said rear wall portion and to cause the smaller pieces passed through the screen to overlie the larger pieces at the strike-off.
HARRY J. SEAMAN.
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Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2575170A (en) * 1945-06-06 1951-11-13 Standard Oil Dev Co Soil stabilization
US2669915A (en) * 1946-03-14 1954-02-23 Kenneth E Mcconnaughay Paving machine
US2718830A (en) * 1952-03-24 1955-09-27 George P Green Material mixing apparatus for road machines
US2828677A (en) * 1953-05-02 1958-04-01 Rotary Hoes Ltd Road making machines
US2962950A (en) * 1957-07-08 1960-12-06 George J Martin Combination truck and roller unit
DE1113708B (en) * 1955-03-01 1961-09-14 Walter Dawihl Dr Ing Method and device for producing road surfaces u. Like. By means of soil mortaring
US3008526A (en) * 1956-06-22 1961-11-14 Norton Portland Corp Soil conditioning apparatus
US3011564A (en) * 1957-08-21 1961-12-05 American Marietta Co Pulverizing and mixing machine
US3029714A (en) * 1959-12-15 1962-04-17 Thomas B Creswell Machine for spreading road surfacing material
US3055280A (en) * 1959-02-20 1962-09-25 Pavement Salvage Inc Means for treating bituminous pavement
US3128729A (en) * 1960-05-24 1964-04-14 James A Henson All-purpose farm machine
US3129890A (en) * 1962-10-23 1964-04-21 Jean M Britton Emergency runway foamer
US3224347A (en) * 1963-04-22 1965-12-21 Harry J Seaman Soil processing machine
US3237540A (en) * 1962-01-10 1966-03-01 Abg Werke Gmbh Distributor bucket for road building materials and the like
US3292510A (en) * 1964-11-09 1966-12-20 Donald A Chennells Road surface stabilizing device
US3361042A (en) * 1965-05-28 1968-01-02 Earl F. Cutler Road surfacing
US3371586A (en) * 1965-07-30 1968-03-05 Arkady Fedorovich Nikolaev Apparatus for packing snow to obtain a snow and ice cover surface
US3794122A (en) * 1972-03-14 1974-02-26 D Rohrer Snow conditioning machine
US3986783A (en) * 1972-08-24 1976-10-19 Atlantic Richfield Company Ice road building method and machine
US3997276A (en) * 1974-03-05 1976-12-14 Jackson Sr James A Road maintenance machine and methods
US4011023A (en) * 1975-12-15 1977-03-08 Cutler Repaving, Inc. Asphalt pavement recycling apparatus
US4027428A (en) * 1975-07-01 1977-06-07 Hillel Daniel I Method and apparatus for conserving soil water
US4051902A (en) * 1975-01-07 1977-10-04 Lely Cornelis V D Soil cultivating implements
US4124325A (en) * 1975-12-31 1978-11-07 Cutler Repaving, Inc. Asphalt pavement recycling apparatus
US4195946A (en) * 1977-02-04 1980-04-01 Cmi Corporation Method for resurfacing a paved roadway
US4252459A (en) * 1978-06-30 1981-02-24 Microdry Corporation Energy conserving paving method and apparatus using microwave heating of materials
US4261669A (en) * 1978-06-05 1981-04-14 Yasuo Edo Method and apparatus for repairing asphalt concrete paved road surface
US4272212A (en) * 1979-06-15 1981-06-09 Andrew J. Bauer, Jr. Method and apparatus for rejuvenating and recycling asphalt
US4300853A (en) * 1977-03-17 1981-11-17 James A. Jackson, Sr. Plasticizer mixer and method
US4317642A (en) * 1978-11-20 1982-03-02 Reinhard Wirtgen Method and apparatus for abrading and recoating road pavements
US4319856A (en) * 1977-01-03 1982-03-16 Microdry Corportion Microwave method and apparatus for reprocessing pavements
US4335975A (en) * 1975-12-05 1982-06-22 Walter Schoelkopf Method and apparatus for plastifying and tearing up of damaged roadsurfaces and covers
US4453856A (en) * 1981-06-05 1984-06-12 Autostrade-Concessioni E Costruzioni Autostrade S.P.A. Self-propelled operating apparatus for the regeneration pavement
US4473320A (en) * 1981-09-08 1984-09-25 Register Archie J Pavement resurfacing device
US4534674A (en) * 1983-04-20 1985-08-13 Cutler Repaving, Inc. Dual-lift repaving machine
US4557626A (en) * 1982-09-24 1985-12-10 Road Renovators, Inc. Road patching vehicle
US4571117A (en) * 1985-02-05 1986-02-18 Johnson Paul Method and apparatus for forming an ice road over snow-covered terrain
US4928890A (en) * 1985-01-14 1990-05-29 Cmi Corporation Apparatus and method for producing cold mix asphalt
US5000615A (en) * 1990-01-09 1991-03-19 Cmi Corporation System for reclaiming and relaying pavement in place
US5080524A (en) * 1989-11-03 1992-01-14 Lee Chin Asphalt road resurfacing machine
WO1999042665A1 (en) * 1998-02-17 1999-08-26 Adelaide Brighton Limited Methods and apparatus for incorporating binders during ground stabilisation
AU737417B2 (en) * 1998-02-17 2001-08-16 Downer EDI Works Pty Ltd Methods and apparatus for incorporating binders during ground stabilisation
EP1396581A2 (en) 2002-09-05 2004-03-10 WIRTGEN GmbH Apparatus for treating soil or roads
AT6869U3 (en) * 2003-12-23 2005-01-25 Hermann Boeckle DEVICE FOR CREATING STABILIZED PILLAR LAYERS ON ECONOMIC PATHS
US20080152427A1 (en) * 2006-12-22 2008-06-26 Road Badger Inc. Ground working device for liquid treated roads
US20130216308A1 (en) * 2012-02-20 2013-08-22 Sean Somers Weaver Polyurethane based road forming
AU2013243469B2 (en) * 2012-04-03 2015-08-20 Sean Somers WEAVER Polyurethane based roadway forming
US20150376847A1 (en) * 2015-09-04 2015-12-31 Caterpillar Paving Products Inc. Additive mixing and delivery system for rotary mixers

Cited By (57)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2575170A (en) * 1945-06-06 1951-11-13 Standard Oil Dev Co Soil stabilization
US2669915A (en) * 1946-03-14 1954-02-23 Kenneth E Mcconnaughay Paving machine
US2718830A (en) * 1952-03-24 1955-09-27 George P Green Material mixing apparatus for road machines
US2828677A (en) * 1953-05-02 1958-04-01 Rotary Hoes Ltd Road making machines
DE1092945B (en) * 1953-05-02 1960-11-17 Rotary Hoes Ltd Mobile machine for compacting a layer of loosened soil and possibly mixed with a binding agent
DE1113708B (en) * 1955-03-01 1961-09-14 Walter Dawihl Dr Ing Method and device for producing road surfaces u. Like. By means of soil mortaring
US3008526A (en) * 1956-06-22 1961-11-14 Norton Portland Corp Soil conditioning apparatus
US2962950A (en) * 1957-07-08 1960-12-06 George J Martin Combination truck and roller unit
US3011564A (en) * 1957-08-21 1961-12-05 American Marietta Co Pulverizing and mixing machine
US3055280A (en) * 1959-02-20 1962-09-25 Pavement Salvage Inc Means for treating bituminous pavement
US3029714A (en) * 1959-12-15 1962-04-17 Thomas B Creswell Machine for spreading road surfacing material
US3128729A (en) * 1960-05-24 1964-04-14 James A Henson All-purpose farm machine
US3237540A (en) * 1962-01-10 1966-03-01 Abg Werke Gmbh Distributor bucket for road building materials and the like
US3129890A (en) * 1962-10-23 1964-04-21 Jean M Britton Emergency runway foamer
US3224347A (en) * 1963-04-22 1965-12-21 Harry J Seaman Soil processing machine
US3292510A (en) * 1964-11-09 1966-12-20 Donald A Chennells Road surface stabilizing device
US3361042A (en) * 1965-05-28 1968-01-02 Earl F. Cutler Road surfacing
US3371586A (en) * 1965-07-30 1968-03-05 Arkady Fedorovich Nikolaev Apparatus for packing snow to obtain a snow and ice cover surface
US3794122A (en) * 1972-03-14 1974-02-26 D Rohrer Snow conditioning machine
US3986783A (en) * 1972-08-24 1976-10-19 Atlantic Richfield Company Ice road building method and machine
US3997276A (en) * 1974-03-05 1976-12-14 Jackson Sr James A Road maintenance machine and methods
US4051902A (en) * 1975-01-07 1977-10-04 Lely Cornelis V D Soil cultivating implements
US4027428A (en) * 1975-07-01 1977-06-07 Hillel Daniel I Method and apparatus for conserving soil water
US4335975A (en) * 1975-12-05 1982-06-22 Walter Schoelkopf Method and apparatus for plastifying and tearing up of damaged roadsurfaces and covers
US4011023A (en) * 1975-12-15 1977-03-08 Cutler Repaving, Inc. Asphalt pavement recycling apparatus
US4124325A (en) * 1975-12-31 1978-11-07 Cutler Repaving, Inc. Asphalt pavement recycling apparatus
US4319856A (en) * 1977-01-03 1982-03-16 Microdry Corportion Microwave method and apparatus for reprocessing pavements
US4195946A (en) * 1977-02-04 1980-04-01 Cmi Corporation Method for resurfacing a paved roadway
US4300853A (en) * 1977-03-17 1981-11-17 James A. Jackson, Sr. Plasticizer mixer and method
US4261669A (en) * 1978-06-05 1981-04-14 Yasuo Edo Method and apparatus for repairing asphalt concrete paved road surface
US4252459A (en) * 1978-06-30 1981-02-24 Microdry Corporation Energy conserving paving method and apparatus using microwave heating of materials
US4317642A (en) * 1978-11-20 1982-03-02 Reinhard Wirtgen Method and apparatus for abrading and recoating road pavements
US4272212A (en) * 1979-06-15 1981-06-09 Andrew J. Bauer, Jr. Method and apparatus for rejuvenating and recycling asphalt
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