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Publication numberUS3260176 A
Publication typeGrant
Publication dateJul 12, 1966
Filing dateNov 14, 1963
Priority dateNov 14, 1963
Publication numberUS 3260176 A, US 3260176A, US-A-3260176, US3260176 A, US3260176A
InventorsRolland L Bowers
Original AssigneeRolland L Bowers
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Road repair apparatus
US 3260176 A
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Description  (OCR text may contain errors)

July 12, 1966 R. L. BOWERS ROAD REPAIR APPARATUS 5 Sheets-Sheet 1 Filed Nov. 14. 1963 INVENTOR E Z. flan/em W 7%6 ATTORNEYS July 12, 1966 R. L. BOWERS ROAD REPAIR APPARATUS 5 Sheets-Sheet 2 Filed Nov. 14. 1963 IN VENTOR AP. 4. Bowers BY W W ATTORNEYS July 12, 1966 ow s 3,260,176

ROAD REPAIR APPARATUS Filed Nov. 14. 1963 5 Sheets-Sheet 5 INVENTOR 6' W W ATTORNEY United States Patent r 3,260,176 ROAD REPAIR APPARATUS Rolland L. Bowers, 3277 Twin Hills NW., Uniontown, Ohio Filed Nov. 14, 1963, Ser. No. 323,702 4 Claims. (Cl. 9439) This invention relates to a road repair apparatus and more particularly to an apparatus for providing predetermined amounts of preselected materials suitable for patching holes or sealing cracks in pavements and roadways. This invention also contemplates a novel mixing unit adapted for use with vehicles having material supply means, for mixing aggregate materials with suitable binder materials for patching holes in roadways and pavements.

Over a period of use, most roadways and pavements constructed of concrete, asphalt or other materials normally become broken or cracked, which necessitate considerable repair or maintenance. Usually, holes and cracks in roadways are patched and sealed with a mixture of a dry aggregate material such as gravel or'limestone and a liquid binder material including liquid asphalt emulsion-s or cut-back asphalts. It also has been the prac tice to prepare such mixtures at a plant location and dispatch bulk quantities to various locations for use in repairing the holes and cracks. It has been found that such practice can be uneconomical and to some extent wasteful, since it is difficult to accurately estimate the amount of material required to patch holes and cracks in many locations. It further has been found that more flexibility and a greater economy can be realized in being able to provide predetermined amounts of suitable selected materials at the repair site which are suitable for the particular nature of the defect in the pavement or roadway sought to be repaired.

Accordingly, the principal object of this invention is to provide a novel road repair apparatus.

Another object of this invention is to provide a novel road repair apparatus suitable for patching holes and sealing cracks in pavements and roadways.

A further object of this invention is to provide a novel road repair apparatus suitable for providing preselected materials in desired quantities for patching holes and sealing cracks in pavements and roadways.

A still further object of this invention is to provide a novel road repair apparatus suitable for providing predetermined amounts otf aggregate material, liquid binder material or a mixture of aggregate and liquid binder material for patching holes or sealing cracks in pavements and roadways.

Another object of the present invention is to provide a novel unit for mixing aggregate and liquid binder materials which can be detachably mounted on a vehicle having aggregate and liquid binder supply means.

A further object of the present invention is to provide a road repair apparatus which is inexpensive to manufacture and operate.

A still further object :of this invention is to provide a road repair apparatus providing flexibility in use, and which requires a minimum amount of maintenance.

Other objects and advantages of the present invention will become more apparent to those persons skilled in the art, in the (following description when taken in conjunction with the accompanying drawings, wherein:

FIGURE 1 is a side view of an embodiment of the present invention;

FIGURE 2 is a rear view of the mixing unit utilized in the embodiment illustrated in FIGURE 1;

FIGURE 3 is an enlarged view taken along line 3-3 in FIGURE 1; and

FIGURE 4 is a crossa'sectional view taken along line 44 in FIGURE 3.

- gage the bottom wall of the receptacle.

In accordance with the broad aspects of the present invention there is provided a road repair apparatus generally comprising a vehicle having aggregate supply and liquid binder supply means mounted thereon and a mixing unit detachably mounted on the vehicle comprising receptacle means for receiving aggregate and liquid binder from the supply means on the vehicle, means for mixing the material deposited in the receptacle means, drive means for the mixing means and means for selectively discharging material therefrom.

Referring to the drawings, there is shown a preferred embodiment of the present invention. Specifically referring to FIGURE 1, there is shown the principal components of the invention generally comprising a vehicle 10 having a dump body 11 suitable for carrying a supply of aggregate such as gravel or lirnstone, pivotally mounted on the rearward end thereof in the conventional manner, a container 12 suitable for storing a supply of liquid binder such as a liquid asphalt emulsion or a cut back asphalt, rigidly mounted on the dump body and a mixing unit 13 detachably mounted on the dump body for receiving predetermined amounts of aggregate therefrom.

The mixing unit 13 includes a receptacle 14- having a circular bottom wall 15 and a cylindrical side wall 16.

Journaled in the center of the bottom wall 15 of the,

receptacle is a drive shaft 17, having an axis disposed substantially perpendicular to the bottom wall 15. Rigidly mounted on the upper end of the drive shaft 17 is a diametrically disposed arm member 18 having a pair of carrier members 19 and 20 mounted on the opposite.

ends thereof. The carrier member 19 is disposed diagonally relative to the arm member 18 wherein the trailing end thereof is disposed a greater distance than the leading end thereof relative to the axis of the drive shaft. In addition, the carrier member 20 also is disposed diagonally relative to the arm member 18 wherein the leading end thereof is disposed a greater distance than the trailing end thereof relative to the axis of the drive shaft. Each of the carrier arms are provided with a plurality of downwardly extending heavy wire steel brushes '21 which en- As best illustrated in FIGURE 3, when the carrier arms are rotating in the direction of the arrows, the wire brushes mounted on the carrier arm 19 will tend to move material deposited in the receptacle outwardly relative to the center of the receptacle. Also, the wire brushes mounted on the carrier arm 20 will tend to move the material inwardly relative to the center Oif the receptacle. The constant inward and outward movement of the material provided by the steel wire brushes is effective in providing a suitable mixture of various diverse materials deposited within the receptacle.

The outward ends of the carrier members are spaced from the side wall 16 a sufiicient distance according to the size of aggregate being mixed to prevent any jamming of the arm member 18. Also mounted on the trailing end of the .carrier member 20 is a wiper member 22, having a wiper blade 23 secured on the free end thereof, which is adapted to engage the inner surface of the side wall 16.

A biasing element 24 is provided on the connecting end of the wiper element 22 for biasing the same against the side wall 16. The primary function of the wiper member 22 is to prevent material moved outwardly by the steel wire brushes on the carrier member 19 from accumulating along the side of the receptacle.

Projecting laterally and secured to the bottom wall of the receptacle is a support frame 25, which supports a suitable motor 26 and an air compressor unit 27. The motor 26 is provided with an output shaft 28, having a pair of pulleys 29 and 30 mounted thereon. The pulley 29 is provided with a suitable drive belt 31, which drives a pulley 32 connected to a suitable shaft for driving the air compressor 27. The compressor 27 is provided with a suitable line 33 for pressurizing the supply of liquid binder in the container 12. The pulley has a drive belt 34, which drives a pulley 35 mounted on a suitable shaft below the support frame, which is journaled in a depending bracket 36. The shaft journaled in the bracket 36 also is provided with a worm gear or other suitable means on the end thereof for driving a vertically disposed shaft 37 having suitable pulleys 38 and 39 mounted thereon. The drive shaft 17 is driven by means of a pair of drive belts 40 and 41, which interconnect the pulley 38 and a pulley 42 on the drive shaft, and the pulley 39 and a second pulley 43 mounted on the drive shaft, respectively. The motor 26 can be a gasoline engine of any suitable type, having suitable speed control means. It is preferable that the drive shaft for the mixing unit be driven at about 40 to 50 r.p.m. for most conventional purposes. In addition, the compressor can be of any suitable type suflicient to provide an air pressure of 10 to 15 psi. for a liquid binder supply container having a 100 gallon capacity.

The bottom wall 15 of the receptacle is provided with a discharge opening 44, which has a pivotally mounted discharge door 45. As best seen in FIGURE 4, the discharge door 45 consists of an elongated member having a portion 46 adapted to be received within the discharge opening 44, pivotally connected at its rearward end to the side wall 16, a front end portion 47 adapted to be received within a latching element 48 mounted on the under side of the bottom wall 15 of the receptacle, and a handle portion 49, which may be swiveled laterally and moved upwardly, as illustrated by the broken lines in FIGURE 4 to permit material within the receptacle to be discharged therefrom.

The material discharged from the receptacle is received within a hopper 50, consisting of a section 51 rigidly mounted on the under side of the receptacle, and a movable section 52 which is hingedly connected to the section 51 thereof, as at 53. The section is provided with a front wall 54 disposed substantially perpendicular to the bottom wall 15 of the receptacle, a pair of laterally spaced side walls 55 having downwardly and forwardly extending rearward edges 56 and a bottom wall 57. The movable section 52 is provided with a pair of spaced side walls 58, having downwardly and forwardly extending front edges 59 which abut the rear edges 56 of the side walls 55 and a bottom wall 60, which is disposed in the same plane as bottom wall 57 below the discharge opening 44 in the receptacle when the section 52 is in the lower closed position, as illustrated by the solid lines in FIGURE 4. It will be noted that when the movable section 52 is in the closed position, the discharge door 45 can be opened so that material is discharged therethrough and deposited on the bottom wall 60 of the section 52 of the hopper. It then would be possible to remove the material from the hopper through the rearward opening between the side walls 58 of section 52. The movable section can be move-d upwardly and retained in an open position, as illustrated by the broken lines in FIGURE 4, by means of a locking bar 61 which is mounted along the rearward edge of one of the walls of section 52 and projects upwardly therefrom. Theupward end of the locking bar 61 is provided with suitable openings 62 therein, which are adapted to register with suitable openings in the adjacent wall 55 of the section 51 for receiving a locking pin therethrough when the hopper section 52 is in the upper, opened position. A handle 63 is provided on the hopper section 52 for lifting the section into the open position. It will be appreciated that when the hopper section 52 is locked in the open position, the discharge door 45 may be opened so that material may be discharged from the receptacle and deposited directly onto the pavement or roadway.

The forward end of the receptacle 14 is provided with a mounting frame 64 comprising a cross bar member 65,

bracing members 66 and 67 and a pair of upwardly extending, transversely spaced hook elements 68 and 69. The hook elements are adapted to be hooked onto hanger bars supported in transversely spaced mounting brackets 76 and 71, which are rigidly secured on the lower portion of the tail gate 72 of the dump body to support the forward end of the mixing unit. The rearward end of the mixing unit is supported by a winch and cable assembly 73, consisting of a winch member 74 mounted on the upper rearward end of the receptacle 14 and a cable 75 adapted to be wound on the winch which has a hooking element 76 on the free end thereof which is adapted to hook on the upper edge of the tail gate 72. It will be appreciated that the mixing unit can be detached from the dump body 12 simply by unhooking the hook 76 and lifting the forward end of the unit off of the hanger bars of the mounting brackets 71 and 71. It further will be appreciated that the receptacle may be maintained in a level position regardless of the position of the dump body, simply by adjusting the length of the cable '75 by means of a handle 77 provided on the winch.

The mixing unit is adapted to receive selected amounts of aggregate from the dump body by the use of a dispensing unit 78 mounted on the lower end of the tail gate 72. As best illustrated in FIGURES 2 and 4, the dispensing unit consists of a cylindrical chute '79, having a mounting flange 80 on the forward end thereof for bolting the unit to the tail gate so that the interior of the cylindrical member 79 communicates with an opening 81 in the tail gate. The rearward end of the chute 79 is provided with a vertically disposed guide member 82, in which there is mounted a sliding gate 553. The sliding gate 83 in its lower position, as illustrated in the drawings, is adapted to block the flow of any material through the chute 79 and is movable upwardly into an open position by means of an actuating lever 84 having an angularly disposed handle portion 85. The actuating lever 84 is pivotally supported on a support bracket 86 mounted on the guide member 82, having the forward end thereof pivotally connected to the sliding gate 83, as at 87. It will be seen in FIGURE 4 that the sliding gate 83 can be moved to the open and closed positions conveniently simply by manipulating the actuating lever 84 by means of the handle portion 85.

Liquid binder is supplied to the mixing unit by means of a supply line 88, having an elongated flexible portion 89, which is connected to the container 12 and a rigid hand portion 90, having a spray discharge end 91 and a handle 92 having suiable valve means. The receptacle 14 is provided with a mounting member 93 for the hand portion of the supply line, consisting of a diagonally disposed carrier member 94 having a tubular lower portion 95 for receiving the end portion of the hand portion therethrough and a pair of spaced retaining elements 96 and 97 at the upper end thereof. It will be noted that the hand portion of the liquid supply line can be easily removed from the mounting member 93 when it is desired to use the liquid binder supply line for other purposes. However, when the supply line is mounted, as illustrated in FIGURE 4, it is in position to supply liquid binder to the mixing unit. The amount of liquid binder supplied to the mixting unit can be controlled by the valve means in the handle 92.

Whenever it is desired to mix a predetermined amount of aggregate with liquid binder, the forward end of the dump body is elevated by suitable controls in the vehicle in the conventional manner, so that aggregate carried in the dump body will fill the chute 79 of the dispensing unit 78. The position of the receptacle is then adjusted by means of the cable and winch assembly, so that the receptacle is in a level position. The desired amount of aggregate then is dispensed from the dispensing unit 78 by manipulating the handle of the actuating lever 84 to lift the sliding gate 83. With the hand holder portion of the supply line mounted as illustrated in FIGURE 4, the valve mechanism in the handle 92 is manipulated so that a decle.

sired amount of liquid binder is sprayed into the receptacle. Simultaneously, the motor 26 is actuated to drive the shaft 17, thereby providing the mixing action. As previously indicated, the wire brushes 21 on the carrier 19 will cause the aggregate within the receptacle to move outwardly while the wire brushes on carrier member 20 will cause the aggregate to move inwardly relative to the center of the receptacle. The wiper member 22 also will prevent aggregate from accumulating on the sides of the recepta- The liquid binder in the container 12 is pressurized by means of the compressor 27 and the pressure is regulated by suitable control means provided on the container.

After the aggregate and liquid binder deposited in the receptacle have been thoroughly mixed, the mixed material is discharged through the opening 44 by lifting the handle 49 of the discharge door upwardly in a position as illustrated by the broken lines in FIGURE 4. The material then either will be deposited in the hopper 50 or onto the pavement or roadway, depending on the position of the movable hopper section 52. With the hopper section 52 in the lower or closed position, as illustrated by the solid lines in FIGURE 4, the material will be deposited on the bottom wall 60 thereof, wherefrom it can be removed with a shovel inserted through the rearward open end of the hopper. If it is desired todeposit the material directly onto the pavement, the hopper section 52 is lifted to the upper or open position as illustrated by the broken lines in FIGURE 4, so that the openings 62 of the locking bar 61 become registered with suitable openings in the side wall 55 of the stationary hopper section 50 and a locking pin is inserted therethrough' The apparatus as described can be utilized to mix aggregate and liquid binder provided on the dump body of the vehicle, to provide a predetermined amount of material for patching holes. In addition, however, the liquid binder supply line can be used independently of the mixing unit to seal small cracks. It also would be possible to utilize the liquid binder supply line independently of the mixing unit to deposit liquid binder on roadways and then to dress the binder material on the pavement or roadway with loose aggregate.

The apparatus as hereinbefore described can be operatedby a single operator to perform various road repair and maintenance operations. The apparatus is particularly suited for a one man operation, which would eliminate the need of maintenance crews for repairing roadways. It is contemplated that maintenance for roadways in municipalities and other political subdivisions can be economically performed with the use of the described apparatus, wherein a number of such units may be employed, each attended by a single operator, which would provide a greater flexibility.

From the foregoing detailed description it will be evident that there are a number of changes, adaptations and modifications of the present invention which come within the province of those skilled in the art. However, it is intended that all such variations not departing from the spirit of the invention be considered as within the scope thereof as limited solely by the appended claims.

What I claim is:

1. A road repair apparatus comprising a vehicle, aggregate supply means mounted on said vehicle, a liquid binder supply means mounted on said vehicle, means mounted on said vehicle for dispensing aggregate in selected amounts from said aggregate supply means, a receptacle having a circular bottom wall and a cylindrical side wall detachably mounted on said vehicle for receiving aggregate from said dispensing means of said vehicle, a liquid binder supply line connected to said binder supply means, said receptacle having means for detachably mounting the discharge end of said liquid binder supply line thereon for introducing liquid binder into said receptaole, a drive shaft journaled in the center of the bottom wall of said receptacle, a diametrically disposed mixing member mounted on said drive shaft and spaced parallel from the bottom wall of said receptacle, one end of said mix-ing member having a diagonally disposed first carrier member mounted thereon having the leading end thereof disposed a greater distance than the trailing end thereof from the axis of said drive shaft, the opposite end of said mixing member having a diagonally disposed second carrier member having the trailing end thereof disposed a greater distance than the trailing end thereof from the axis of said drive shaft, said first and second carrier members having downwardly extending brushes engaging the bottom wall of said receptacle, one of said carrier members having a member engageable with the side wall of said receptacle for wiping material within said receptacle accumulating on said side wall, drive means mounted on said receptacle operatively connected with said drive shaft, the bottom wall of said receptacle having means for selectively discharging material therefrom, a hopper mounted on said receptacle for receiving material from said discharge means of said receptacle and said hopper having a section hingedly connected thereto for movement in a vertical plane with a bottom Wall disposed below said dis-charge means of said receptacle and an open rearward end when said section is in a lower closed position.

2. A road repair apparatus comprising a vehicle, a dump body for supporting a supply of aggregate pivotally mounted on the rearward end of said vehicle, said dump body having a tail gate, said tail gate having a pair of transversely spaced mounting bars, a container containing a supply of liquid binder mounted on said dump body, a chute communicating with the interior of said dump body mounted on said tail gate having valve means for dispensing aggregate therefrom in preselected amounts, a receptacle having a bottom wall and a cylindrical side wall for receiving aggregate from said chute on said tail gate, said receptacle having a pair of transversely spaced hook elements disposed on the forward end thereof for hingedly mounting said receptacle on said mounting bars on said tail gate, a flexible liquid binder supply line connected to said liquid binder container, said binder supply line having a rigid portion disposed at the discharge end thereof, said receptacle having means for detachably mounting the rigid portion of said supply line thereof for introducing liquid binder into said receptacle, a winch and cable assembly mounted on the forward end of said receptacle, the free end of said cable having a hook adapted to be hooked on the upper edge of said tail gate for supporting the rearward end of said receptacle, a drive shaft journaled in the center of the bottom wall of said receptacle, a diametrically disposed mixing arm mounted on said drive shaft and spaced parallel from the bottom wall of said receptacle, one end of said mixing arm having a-diagonally disposed first carrier member mounted thereon having the leading end thereof disposed a greater distance than the trailing end thereof relative to the axis of said drive shaft, the opposite end of said mixing arm having a diagonally disposed second carrier member having the trailing end thereof disposed a greater distance than the trailing end thereof relative to the axis of said drive shaft, said first and second carrier members having downwardly extending brushes engaging the bottom wall of said receptacle, one of said carrier members having a member engageable with the side wall of said receptacle for Wiping material within said receptacle accumulating on said side wall thereof, a support bracket mounted on said receptacle, drive means mounted on said support bracket operatively connected with said drive shaft, the bottom wall of said receptacle having means for selectively discharging material therefrom, a hopper mounted on said receptacle for receiving material from said discharge means of said receptacle, said hopper having a section hingedly connected thereto for movement in a vertical plane into open and closed positions, said section having a bottom wall disposed below said discharge means of said receptacle and an open rearward end When said section is in the closed position and said section having means for retaining said section in the open position whereby material discharged from said receptacle is permitted to gravity fall clear of said section.

3. A mixing unit suitable for use with a road repair apparatus including a vehicle having an aggregate supply means and a liquid binder supply means mounted thereon comprising a receptacle having a circular bottom wall and a cylindrical side wall, said receptacle having means for detachably mounting said unit on said vehicle for receiving aggregate therefrom, said receptacle having means for detachably mounting the discharge end of a liquid binder supply line connected with said liquid binder supply means thereon for introducing liquid binder into said receptacle, a drive shaft journaled in the center of the bottom wall of said receptacle, a diametrically disposed mixing arm mounted on said drive shaft and spaced substantially parallel from the bottom wall of said receptacle, one end of said mixing arm having a diagonally disposed first carrier member mounted thereon having the leading end thereof disposed at greater distance than the trailing end thereof from the axis of said drive shaft, the opposite end of said mixing arm having a diagonally disposed second carrier member having the trailing end thereof disposed a greater distance than the trailing end thereof from the axis of said drive shaft, said first and second carrier members having downwardly extending brushes engaging the bottom wall of said receptacle, one of said carrier members having a member engageable with the side wall of said receptacle for wiping material within said receptacle accumulating on said side wall, drive means mounted on said unit operatively connected with said drive shaft, the bottom wall of said receptacle having means for selectively discharging material therefrom, a hopper mounted on said receptacle for receiving material from said discharge means of said receptacle and said hopper having a section hingedly connected thereto for movement in a vertical plane with a bottom wall disposed below said discharge means of said receptacle and an open rearward end when said section is in a lower closed position.

4. A mixing unit suitable for use with a road repair apparatus including a vehicle having a dump body for supporting a supply of aggregate pivotally mounted thereon, said dump body having a tail gate with a pair of transversely spaced hanger bars, a container for a supplyof liquid binder mounted on said dump body comprising a receptacle having a circular bottom wall and a cylindrical side wall for receiving aggregate from a dispensing means provided on said tail gate, said unit having a pair of transversely spaced hook elements disposed on the forward end thereof for hingedly mounting said unit on said hanger bars on said tail gate, said receptacle having means for detachably mounting the discharge end of a liquid binder supply line connected to said liquid binder supply container thereon for introducing liquid b nder into said receptacle, a winch and cable assembly mounted on the rearward end of said receptacle, the cable of said assembly having a hook on the free end thereof adapted to be hooked on the upper edge of said tail gate for supporting the rearward end of said unit, a drive shaft journaled on the center of the bottom wall of said receptacle, a diametrically disposed mixing member mounted on said drive shaft and spaced parallel from the bottom wall of said receptacle, one end of said mixing member having a diagonally disposed first carrier member mounted thereon having the leading end thereof disposed a greater distance than the trailing end thereof relative to the axis of said drive shaft, the opposite end of said mixing member having a diagonally disposed second carrier member having a trailing end thereof disposed a greater distance than the trailing end thereof relative to the axis of said drive shaft, said first and second carrier members having downwardly extending brushes engaging the bottom wall of said receptacle, one of said carrier members having a member engageable with the side wall of said receptacle for preventing material within said receptacle from accumulating on said side Wall thereof, a support bracket mounted on said receptacle, drive means mounted on said support bracket operatively connected with said drive shaft, compressor means operatively connected with said drive means mounted on said support bracket means interconnecting said compressor and said liquid binder supply container for supplying compressed air to said container, the bottom wall of said receptacle having means for selectively discharging material therefrom, a hopper mounted on said receptacle for receiving material from said discharge means of said receptacle, said hopper having a section hingedly connected thereto for movement in a vertical plane into open and closed positions, said section having a bottom wall disposed below said discharge means of said receptacle and an open rearward end when said section is in the closed position and said section having means for retaining said section in the open position whereby material discharged from said receptacle is permitted to gravity clear of said section.

References Cited by the Examiner UNITED STATES PATENTS 702,881 6/1902 Otis 259178 I 1,405,553 2/1922 Murphy 9442 1,613,736 1/1927 Andresen 94 42 1,946,461 2/1934 Hurt 94-42 2,833,187 5/1958 Wells 94-42 3,062,514 11/1962 Waimer 259l78 FQREIGN PATENTS 121,881 6/1948 Sweden.

JACOB L, NACKENOFF, Primary Examiner.

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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3564985 *Apr 28, 1969Feb 23, 1971Poweray Infrared CorpPavement restoration apparatus
US4198177 *Oct 26, 1978Apr 15, 1980Collier and AssociatesMethod and apparatus for repair of asphalt surfaces
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US4678363 *Jun 12, 1986Jul 7, 1987Sterner Carl LPothole patcher and road surfacing device
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US4865227 *Sep 28, 1988Sep 12, 1989Stephens Anthony LDispensing apparatus
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US5590976 *May 30, 1995Jan 7, 1997Akzo Nobel Ashpalt Applications, Inc.Mobile paving system using an aggregate moisture sensor and method of operation
US5980153 *Jul 30, 1998Nov 9, 1999Akzo Nobel Asphalt Applications, Inc.Telescoping auger shaft and method of manufacture
US6161986 *Jun 12, 1998Dec 19, 2000Geff's Manufacturing, Inc.Aggregate spreading apparatus and methods
US6398453Oct 5, 1999Jun 4, 2002Akzo Nobel Asphalt Applications, Inc.Telescoping spreader box with replaceable strike-off system
US6776557 *Sep 4, 2002Aug 17, 2004E.D. Etnyre & Co.Roadway paving supply truck
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Classifications
U.S. Classification404/111, 366/606, 366/45, 366/19
International ClassificationE01C19/46, E01C19/10
Cooperative ClassificationY10S366/606, E01C19/104, E01C19/46
European ClassificationE01C19/10D5, E01C19/46