ROAD PATCHER SYSTEM
A road patching vehicle for patching damaged areas or potholes of various sizes and shapes on a roadway includes a boom assembly pivotally mounted at or on the forward end of the vehicle with a nozzle mounted at or toward the forward end of the boom. Various hoses connect the nozzle to a source of pressurized air, a source of patching emulsion (such as an asphalt emulsion), and a source of a rock aggregate with the vehicle operator controlling the flows individually or in various combinations thereof to prepare and then fill the pothole or other road defect to effect a patch. The nozzle is mounted on a pivot or journal to allow controlled pivoting or tilting of the nozzle under control of the operator in at least one degree of freedom. In a variant of the preferred form, the nozzle is mounted for control pivoting or tilting under the control of the operator in at least two degrees of freedom.
This application claims the benefit of U.S. Provisional Patent Application 61/050,244 filed by the inventors herein on May 4, 2008, the disclosure of which is incorporated herein by reference.
BACKGROUNDThe present invention relates to road vehicles used to repair and patch roadway surfaces, such as the filling of potholes or similar defects or concavities in asphalt-type pavements, and, more particularly, to roadway patching vehicles having a moveable boom mounted to their chassis for placement over the area to be patched and having a nozzle for dispensing various materials for implementing the patching function.
Various types of wheeled vehicles have been developed to patch roadway surfaces, particularly for the filling of potholes of various shapes and sizes. Some of these vehicles carry a load of hot patching-material in a vehicle-mounted hopper with a rear-mounted chute through which the patching material is dispensed into the pothole; typically, one more workman are required remove dust and loose material from the potholes and thereafter guide the patch material(s) into the pothole and tamp the surface of the patch material to conform to the surface of the roadway. More recent vehicles use a forward-mounted boom that is controlled by hydraulic actuators to position a nozzle over the pothole. The operator of the vehicle controls a flow of pressurized air directed into the pothole to removed excess water, dust, and loose debris with a further controlled flow of emulsified asphalt and/or a mix of emulsified asphalt/rock aggregate for delivery into and for filling of the pothole.
SUMMARYA road patching vehicle for patching potholes of various sizes and shapes includes a boom assembly pivotally mounted at or on the front of the vehicle with a nozzle mounted at or toward the forward end of the boom. Various hoses connect the nozzle to at least a source of pressurized air, a source of patching emulsion (such as an asphalt emulsion), and a source of a rock aggregate with the vehicle operator controlling the flows individually or in various combinations thereof to prepare and then fill the pothole or other road defect to effect a patch. The nozzle is mounted on a pivot or journal to allow controlled pivoting or tilting of the nozzle under control of the operator in at least one degree of freedom. In a variant of the preferred form, the nozzle is mounted for control pivoting or tilting under the control of the operator in at least two degrees of freedom.
An exemplary road patcher vehicle with a nozzle system in accordance with one embodiment is shown in left-side and right-side views in
As shown in
The road patcher 20 includes a discharge nozzle 36, described more fully below, at the remote or forward end of the boom assembly 22 for discharging a flow of pressurized air, a flowable asphalt emulsion, and/or a mixture of the asphalt emulation and rock aggregate into or onto the roadway to effect patching. Various hoses, connectors, valves and the like connect to the nozzle 36 to the pressurized air source, the emulsified asphalt holding tank 26, and the aggregate hopper 24 of which only the aggregate transport hose 38 is shown in
As shown in simplified schematic form in
The system of
The boom assembly 22 is shown in side views in
In the various figures, the boom assembly 22 is shown with its pivotable end mounted on the left or driver side of the vehicle; as can be appreciated, the organization of the boom assembly can be reversed, i.e., the pivotable end can be on the right or passenger side of the vehicle, or, if desired, the pivotable end of the boom assembly 22 can be mounted at some mid-position between the left and right sides of the vehicle. In the embodiment shown, only a single boom 58 is used; however, the use of at least one other boom pivotally connected to the end of the boom 58 (with an appropriate hydraulic control cylinder) to provide a two-boom assembly is not excluded.
The remote or distal end of the boom assembly 22 is shown in
The pivotally or tiltable nozzle mount provides enhance functionality to the road patcher vehicle. More specifically and after the vehicle operator deploys the boom 58 to position the distal end over the pothole or area to be patched, the operator directs a flow of pressurized air (from the rock aggregate blower 44,
In the embodiment described above, the axis 80 about which the nozzle 36 is pivoted or tilted is substantially parallel to the long axis of the boom 58 but displaced therefrom (as shown in
A variation of the embodiment shown in
As will be apparent to those skilled in the art, various changes and modifications may be made to the illustrated embodiment of the present invention without departing from the spirit and scope of the invention as determined in the appended claims and their legal equivalent.
Claims
1. A road-patching motor vehicle for patching or repairing a portion of a roadway, the vehicle having a source of pressurized air and a supply of road patching materials including at least a rock aggregate and an emulsion, comprising:
- at least one boom pivotally mounted at or near the forward end of the vehicle;
- at least one actuator connected to the boom for pivoting the boom to a selected position over the roadway;
- a nozzle mounted at or near a remote end of the boom;
- a pivotable mount for the nozzle and at least one actuator for controllably pivoting the nozzle to control the direction of discharge therefrom relative to the remote end of the boom; and
- a system for selectively providing a user-controlled supply of at least a one of pressurized air or a road patching material to the nozzle for discharge therefrom onto the roadway.
2. The road patching vehicle of claim 1, wherein the nozzle is pivotable about a first axis that is approximately parallel to a long axis of the boom.
3. The road patching vehicle of claim 1, wherein the nozzle is pivotable about a first axis that is approximately perpendicular to a long axis of the boom.
4. The road patching vehicle of claim 1, wherein the nozzle is pivotable about a first axis that is approximately perpendicular to a long axis of the boom and further rotatable about the long axis of the boom.
5. The road patching vehicle of claim 1, wherein the pivotable mount comprises an omni-directional mount.
6. The road patching vehicle of claim 1, wherein the actuator for controllably pivoting the nozzle comprises a bidirectional electrically power actuator.
7. A road-patching motor vehicle for patching or repairing a portion of a roadway, the vehicle having a source of pressurized air and a supply of road patching materials including at least a rock aggregate and an emulsion, comprising:
- at least one boom pivotally mounted at or near the forward end of the vehicle;
- at least one actuator connected to the boom for deploying the boom to a selected position over the roadway;
- a nozzle mounted at or near a remote end of the boom;
- a mount for the nozzle for changing the direction of discharge of the nozzle and at least one actuator for controllably moving the nozzle relative to the boom to control the direction of discharge therefrom relative to the remote end of the boom; and
- a system for selectively providing a user-controlled supply of at least a one of pressurized air or a road patching material to the nozzle for discharge therefrom onto the roadway.
8. The road patching vehicle of claim 1, wherein the nozzle is moveable about a first axis that is approximately parallel to a long axis of the boom.
9. The road patching vehicle of claim 1, wherein the nozzle is moveable about a first axis that is approximately perpendicular to a long axis of the boom.
10. The road patching vehicle of claim 1, wherein the nozzle is moveable about a first axis that is approximately perpendicular to a long axis of the boom and further rotatable about the long axis of the boom.
11. The road patching vehicle of claim 1, wherein the mount comprises an omni-directional mount.
12. The road patching vehicle of claim 1, wherein the actuator for controllably pivoting the nozzle comprises a bi-directional electrically power actuator.
13. A method of operating a road-patching motor vehicle for patching or repairing a portion of a roadway, the vehicle having a source of pressurized air, supply of a rock aggregate, and a supply of an emulsion, at least one boom pivotally mounted at or near the forward end of the vehicle, at least one actuator connected to the boom for pivoting the boom to a selected position over the roadway, a nozzle mounted at or near a remote end of the boom, a pivotable mount for the nozzle and at least one actuator for controllably pivoting the nozzle to control the direction of discharge therefrom relative to the remote end of the boom, and a system for selectively providing a user-controlled supply of pressurized air, rock aggregate, or the emulation to the nozzle for discharge therefrom onto the roadway, comprising the steps of:
- pivoting the boom to position the nozzle over an area of the roadway to be patched or repaired,
- discharging a flow of pressurized air into or onto at least a portion of the roadway to be patched or repaired to remove debris therefrom and pivoting the nozzle for some period of time while discharging the flow of pressurized air;
- discharging a flow of emulsion into or onto at least a portion of the roadway to be patched or repaired and pivoting the nozzle for some period of time while discharging the flow of emulsion;
- discharging a mix of emulsion and rock aggregate into or onto at least a portion of the roadway to be patched or repaired and pivoting the nozzle for some period of time while discharging the mix of emulsion and rock aggregate; and
- discharging a flow of rock aggregate into or onto at least a portion of the roadway to be patched or repaired and pivoting the nozzle for some period of time while discharging the flow of rock aggregate.
Type: Application
Filed: May 4, 2009
Publication Date: Nov 5, 2009
Inventors: Andrew B. Cooper (New Market, AL), Jeremy A. Rimmer (Huntsville, AL)
Application Number: 12/435,374
International Classification: E01C 21/00 (20060101); E01C 19/18 (20060101);