US20060099031A1 - Solar-assisted patch cart - Google Patents
Solar-assisted patch cart Download PDFInfo
- Publication number
- US20060099031A1 US20060099031A1 US10/984,201 US98420104A US2006099031A1 US 20060099031 A1 US20060099031 A1 US 20060099031A1 US 98420104 A US98420104 A US 98420104A US 2006099031 A1 US2006099031 A1 US 2006099031A1
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- Prior art keywords
- cart
- patch
- solar energy
- battery
- assisted
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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
-
- 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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/08—Apparatus for transporting and heating or melting asphalt, bitumen, tar, or the like
Definitions
- the present invention relates to the field of patch carts used for patching roadways. More specifically, the invention is directed to a solar power-assisted patch cart.
- patch carts are used by towns, cities, municipalities, counties, or states to repair local roadways, highways or parking lot facilities, for example.
- private entities may use these patch carts to repair roadways or facilities.
- Patch carts include an enclosure for storing bituminous material such as asphalt used for road repair. The enclosure and bituminous material are heated, and then selectively dropped onto a repair area, such as by release from the bottom portion of a funnel-shaped patch cart, or by shoveling.
- Suitable patch carts which may be used in connection with the present invention include asphalt patch carts such as those sold by Spaulding Manufacturing, Inc., of Saginaw Michigan (www.spauldingmfg.com).
- Past patch carts have employed several methods of heating the asphalt, for example, including diesel burner systems. Diesel systems may be preferred for safety reasons because they do not require large storage containers of volatile propane to be attached to the patch cart. Diesel systems also may be preferred for convenience because of the relative ease of refilling diesel fuel tanks versus refilling propane tanks. Electric-powered patch carts are also available, but these require a gasoline engine-powered generator to run the electric.
- a variety of commercially-available, asphalt-based materials containing bituminous materials and chemicals including UPM (having a melting temperature or T m of about 80° F.), HotMax (T m of about 220° F.), and ColdPatch (T m of about 180° F.) may be used in such patch carts, which typically require about 45 minutes-1 hour to heat these materials to their melting temperatures prior to their use on roadways.
- UPM having a melting temperature or T m of about 80° F.
- HotMax T m of about 220° F.
- ColdPatch T m of about 180° F.
- a temperature sensor in connection with a solenoid valve, for example, shuts off the burner.
- a battery typically 12 volts located on the patch cart is then used to ignite the burner and continue heating of the asphalt after a predetermined period and/or after sensing that the asphalt's temperature has dropped below its melting temperature by a predetermined amount. This burner ignition and shut-off, and corresponding temperature cycling, continues throughout the day, including during transport of the patch cart from job-site to job-site.
- a problem frequently encountered with conventional patch carts is that during cycling, the patch cart battery often loses charge and does not have sufficient charge to ignite the burner. When this happens, the battery must be charged in the field, either by using a portable battery charger, or by using the battery on the truck used to transport the patch cart. Alternatively, the patch cart must be returned to its original location and its battery replaced with a new battery.
- the patch cart battery Given its frequent use throughout a working day, the patch cart battery will quickly lose charge over time if not re-charged.
- a 12-volt battery will provide an average of about 550 cranking amps at 32° F., while at least 16 amps are typically need to ignite the burner. (As an example, about three hours of burner ignition, requiring re-lighting (at 70° F.) about every 20 minutes, in this environment will normally be sufficient to deplete the battery below the amperage necessary to reignite the burner.) Maintaining the charge of the patch cart battery above that necessary to ignite the burner by using the battery of the truck used to transport the patch cart can be problematic because of the distance between the front of the truck (where the truck battery is located) and the burner system on the patch cart located at the rear of the truck.
- 4 amps may be dissipated over 15 feet if a 10-gauge cable/wire is used.
- Pick-up trucks for example (often used to transport patch carts) often carry cable/wire (e.g., 14 gauge wire) which is too thin to effectively charge the battery.
- the patch cart battery may also lose power due to blown fuses or relays on the towing vehicle, or the driver shutting off the towing vehicle but not the patch cart (e.g, during break or lunch time).
- a solar power-assisted patch cart in a preferred embodiment of the present invention, includes a support surface for carrying and heating a bituminous material, such as asphalt, suitable for paving or repairing roadways.
- the patch cart also includes a heating source, such as diesel or propane fuel, to heat the support surface and bituminous material within the support surface.
- the patch cart further includes a solar-assisted battery for use in igniting a burner associated with the heating source.
- a charge controller in electrical communication with the battery is provided, to facilitate maintaining the battery with a predetermined level of charge.
- a sufficient number/size of solar panel(s) may be used, preferably in combination with a battery booster, to power not only burner ignition but also the burner/engine itself.
- FIG. 1 is a perspective view of the patch cart of the present invention showing the solar panels in an exposed, energizing mode
- FIG. 2 is an enlarged perspective view of an upper portion of the patch cart shown in FIG. 1 ;
- FIG. 3 is a view similar to FIG. 2 illustrating the solar panels in a retracted, rest mode
- FIG. 4 is a rear perspective view of the upper portion of the patch cart shown in FIG. 3 ;
- FIG. 5 is a side perspective view of the patch cart of the present invention attached to the rear of a vehicle pulling the patch cart;
- FIG. 6 is an enlarge view of the slidable pin and channel on support bar 25 shown in FIG. 3 ;
- FIG. 7 is a front and side perspective view of a conventional diesel burner, in partially unassembled form.
- “Bituminous” means any of a variety of particulate materials, including but not limited to the material commonly referred to as “asphalt,” which may be used to repair road surfaces.
- FIG. 1 shows a preferred embodiment of the patch cart of the present invention, generally referred to by the reference numeral 15 .
- Patch cart 15 includes a container or enclosure 20 which may have funneling, sloping sides 21 and an interior support surface (not shown). Asphalt or another bituminous material suitable for repairing roadways may be loaded into the patch cart enclosure 20 and carried on the inner support surface.
- patch cart 15 may include a fire extinguisher 80 , a heat exhaust 100 , a diesel tank(s) located in an enclosure 60 , and a computer 40 for controlling various operations as further described below.
- propane gas stored in cylinders may be used to heat the enclosure 60 .
- a battery 50 FIG. 5
- Patch cart 15 may be attached to the rear of a vehicle 90 as shown in FIG. 5 .
- Diesel burner 140 for igniting diesel fuel to heat the patch cart is shown in partially unassembled form.
- Diesel burner 140 may include electric components 141 , a blower motor 142 , igniters 143 , an injector 145 , and a fuel pump assembly 147 .
- a battery charge controller 30 in electrical communication with battery 50 may be used to control charge to battery 50 , as further explained below.
- Battery 50 and charge controller 30 are preferably solar powered, such as by solar panels 35 , and are in electrical communication with the solar panels for this purpose.
- Battery 50 may be used to ignite a burner(s) associated with the fuel source used to heat enclosure 20 .
- solar panels are commercially available, in a preferred embodiment it was found to be cost-effective to use solar panels that had previously been used for that purpose as arrow markers by the state highway authority.
- commercially available solar panels which may be used include, for example:
- solar panels 35 may be retracted, as shown in FIGS. 3-5 .
- solar panels 35 may be allowed to rotate or fold relative to the patch cart, such as relative to inner and outer pairs of vertical support bars 25 , 26 and horizontal support bar 27 , which may be attached to the side of patch cart enclosure 20 .
- channels 25 a , 25 b may be provided within support bar 25 , so that a slidable pin 25 c may move within these channels between locked and unlocked positions.
- solar panels 35 may be placed in electrical communication, such as by hard wiring, to a battery charge controller 30 , shown in FIG. 4 .
- the battery charge controller 30 such as the Solar Charge Controller and Power Booster from Advanced Energy Group, prevents overcharging of the battery system 50 , shown in FIG. 5 , in daylight, and also prevents drainage of the battery at night, such that the battery may be maintained with a predetermined level of charge.
- multiple solar panels may be used in conjunction with a charge controller and booster, to enable the patch cart to be fully solar powered, such that power assist from the towing vehicle is not required.
- the heating mechanism initiated by the battery system 50 may be any of a number of types of heating mechanisms well known in the art.
- One such suitable heating mechanism known in the art is a fuel such as diesel fuel.
- Another suitable heating mechanism known in the art is propane fuel.
- Another suitable heating mechanism known in the art is an electric powered heating system.
- a sufficient number/size of solar panel(s) may be used, preferably in combination with a battery booster, to power not only burner ignition but also the burner/engine itself.
- a battery booster for example, with a diesel-powered Spaulding patch cart it was found that about 16 amps were necessary to power the diesel burner heating the patch cart.
- Each solar panel referenced above provides about 3 amps of current. Accordingly, using two or more solar panels for powering a 12-volt battery, in conjunction with a battery booster, provides sufficient current to power the diesel burner without need for power assist from another vehicle.
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Road Paving Machines (AREA)
Abstract
A solar energy-assisted patch cart with a support surface for carrying and heating bituminous materials, a heating source located adjacent to the support surface, and a battery powered at least in part by solar energy for igniting a burner associated with the heating source. Preferably, a charge controller is used to maintain the battery with a predetermined level of charge. The solar energy may be supplied by one or more retractable solar panels in electric communication with the battery.
Description
- The present invention relates to the field of patch carts used for patching roadways. More specifically, the invention is directed to a solar power-assisted patch cart.
- Generally, patch carts are used by towns, cities, municipalities, counties, or states to repair local roadways, highways or parking lot facilities, for example. In addition, private entities may use these patch carts to repair roadways or facilities. Patch carts include an enclosure for storing bituminous material such as asphalt used for road repair. The enclosure and bituminous material are heated, and then selectively dropped onto a repair area, such as by release from the bottom portion of a funnel-shaped patch cart, or by shoveling. Suitable patch carts which may be used in connection with the present invention include asphalt patch carts such as those sold by Spaulding Manufacturing, Inc., of Saginaw Michigan (www.spauldingmfg.com).
- Past patch carts have employed several methods of heating the asphalt, for example, including diesel burner systems. Diesel systems may be preferred for safety reasons because they do not require large storage containers of volatile propane to be attached to the patch cart. Diesel systems also may be preferred for convenience because of the relative ease of refilling diesel fuel tanks versus refilling propane tanks. Electric-powered patch carts are also available, but these require a gasoline engine-powered generator to run the electric.
- A variety of commercially-available, asphalt-based materials containing bituminous materials and chemicals, including UPM (having a melting temperature or Tm of about 80° F.), HotMax (Tm of about 220° F.), and ColdPatch (Tm of about 180° F.) may be used in such patch carts, which typically require about 45 minutes-1 hour to heat these materials to their melting temperatures prior to their use on roadways. When the asphalt material reaches its melting temperature, a temperature sensor in connection with a solenoid valve, for example, shuts off the burner. A battery (typically 12 volts) located on the patch cart is then used to ignite the burner and continue heating of the asphalt after a predetermined period and/or after sensing that the asphalt's temperature has dropped below its melting temperature by a predetermined amount. This burner ignition and shut-off, and corresponding temperature cycling, continues throughout the day, including during transport of the patch cart from job-site to job-site.
- A problem frequently encountered with conventional patch carts is that during cycling, the patch cart battery often loses charge and does not have sufficient charge to ignite the burner. When this happens, the battery must be charged in the field, either by using a portable battery charger, or by using the battery on the truck used to transport the patch cart. Alternatively, the patch cart must be returned to its original location and its battery replaced with a new battery.
- Given its frequent use throughout a working day, the patch cart battery will quickly lose charge over time if not re-charged. A 12-volt battery will provide an average of about 550 cranking amps at 32° F., while at least 16 amps are typically need to ignite the burner. (As an example, about three hours of burner ignition, requiring re-lighting (at 70° F.) about every 20 minutes, in this environment will normally be sufficient to deplete the battery below the amperage necessary to reignite the burner.) Maintaining the charge of the patch cart battery above that necessary to ignite the burner by using the battery of the truck used to transport the patch cart can be problematic because of the distance between the front of the truck (where the truck battery is located) and the burner system on the patch cart located at the rear of the truck. For example, 4 amps may be dissipated over 15 feet if a 10-gauge cable/wire is used. Pick-up trucks, for example (often used to transport patch carts) often carry cable/wire (e.g., 14 gauge wire) which is too thin to effectively charge the battery. The patch cart battery may also lose power due to blown fuses or relays on the towing vehicle, or the driver shutting off the towing vehicle but not the patch cart (e.g, during break or lunch time).
- Accordingly, it would be desirable to provide a cost-efficient patch cart with a battery that is readily charged, providing a reliable burner system.
- The objects mentioned above, as well as other objects, are solved by the present invention, which overcomes disadvantages of prior patch carts, while providing new advantages not believed associated with such devices.
- In a preferred embodiment of the present invention, a solar power-assisted patch cart is provided. The patch cart includes a support surface for carrying and heating a bituminous material, such as asphalt, suitable for paving or repairing roadways. The patch cart also includes a heating source, such as diesel or propane fuel, to heat the support surface and bituminous material within the support surface. The patch cart further includes a solar-assisted battery for use in igniting a burner associated with the heating source. Preferably, a charge controller in electrical communication with the battery is provided, to facilitate maintaining the battery with a predetermined level of charge.
- In an alternative embodiment, a sufficient number/size of solar panel(s) may be used, preferably in combination with a battery booster, to power not only burner ignition but also the burner/engine itself.
- The novel features which are characteristic of the invention are set forth in the appended claims. The invention itself, however, together with further objects and attendant advantages thereof, will be best understood by reference to the following description taken in connection with the accompanying drawings, in which:
-
FIG. 1 is a perspective view of the patch cart of the present invention showing the solar panels in an exposed, energizing mode; -
FIG. 2 is an enlarged perspective view of an upper portion of the patch cart shown inFIG. 1 ; -
FIG. 3 is a view similar toFIG. 2 illustrating the solar panels in a retracted, rest mode; -
FIG. 4 is a rear perspective view of the upper portion of the patch cart shown inFIG. 3 ; -
FIG. 5 is a side perspective view of the patch cart of the present invention attached to the rear of a vehicle pulling the patch cart; -
FIG. 6 is an enlarge view of the slidable pin and channel onsupport bar 25 shown inFIG. 3 ; and -
FIG. 7 is a front and side perspective view of a conventional diesel burner, in partially unassembled form. - The terms used in the claims of the patent as filed are intended to have their broadest meaning consistent with the requirements of law.
- “Bituminous” means any of a variety of particulate materials, including but not limited to the material commonly referred to as “asphalt,” which may be used to repair road surfaces.
- Where alternative meanings are possible, the broadest meaning is intended. All words used in the claims are intended to be used in the normal, customary usage of grammar and the English language.
- Set forth below is a description of what are believed to be the preferred embodiments and/or best examples of the invention claimed. Future and present alternatives and modifications to this preferred embodiment are contemplated. Any alternatives or modifications which make insubstantial changes in function, in purpose, in structure, or in result are intended to be covered by the claims of this patent.
-
FIG. 1 shows a preferred embodiment of the patch cart of the present invention, generally referred to by thereference numeral 15.Patch cart 15 includes a container orenclosure 20 which may have funneling, slopingsides 21 and an interior support surface (not shown). Asphalt or another bituminous material suitable for repairing roadways may be loaded into thepatch cart enclosure 20 and carried on the inner support surface. - Still referring to
FIG. 1 ,patch cart 15 may include afire extinguisher 80, aheat exhaust 100, a diesel tank(s) located in anenclosure 60, and acomputer 40 for controlling various operations as further described below. Alternatively, propane gas stored in cylinders, for example, may be used to heat theenclosure 60. A battery 50 (FIG. 5 ) may be used to ignite the burner for the diesel or propone fuel.Patch cart 15 may be attached to the rear of avehicle 90 as shown inFIG. 5 . - Referring to
FIG. 7 , aconventional diesel burner 140 for igniting diesel fuel to heat the patch cart is shown in partially unassembled form.Diesel burner 140 may includeelectric components 141, ablower motor 142,igniters 143, aninjector 145, and a fuel pump assembly 147. - Referring now to
FIGS. 1 and 4 , in a particularly preferred embodiment abattery charge controller 30 in electrical communication withbattery 50 may be used to control charge tobattery 50, as further explained below.Battery 50 andcharge controller 30 are preferably solar powered, such as bysolar panels 35, and are in electrical communication with the solar panels for this purpose.Battery 50 may be used to ignite a burner(s) associated with the fuel source used to heatenclosure 20. - While solar panels are commercially available, in a preferred embodiment it was found to be cost-effective to use solar panels that had previously been used for that purpose as arrow markers by the state highway authority. Alternatively, commercially available solar panels which may be used include, for example:
- 12 volt, 4.55 amps: http://www.solar-electric.com/bpso80wasopa.html
- 12 volt. 7.1 amps: http://www.solar-electric.com/bpso125wasop.html
- To avoid contact with asphalt loaded in the patch cart,
solar panels 35 may be retracted, as shown inFIGS. 3-5 . For this purpose,solar panels 35 may be allowed to rotate or fold relative to the patch cart, such as relative to inner and outer pairs of vertical support bars 25, 26 andhorizontal support bar 27, which may be attached to the side ofpatch cart enclosure 20. Referring toFIGS. 3 and 6 , for thispurpose channels support bar 25, so that aslidable pin 25 c may move within these channels between locked and unlocked positions. Providingsolar panels 35 with a retraction or folding capability allows the solar panels to remain out of the way during loading of the patch cart. - Preferably,
solar panels 35 may be placed in electrical communication, such as by hard wiring, to abattery charge controller 30, shown inFIG. 4 . Thebattery charge controller 30, such as the Solar Charge Controller and Power Booster from Advanced Energy Group, prevents overcharging of thebattery system 50, shown inFIG. 5 , in daylight, and also prevents drainage of the battery at night, such that the battery may be maintained with a predetermined level of charge. In an alternative embodiment of the invention, multiple solar panels may be used in conjunction with a charge controller and booster, to enable the patch cart to be fully solar powered, such that power assist from the towing vehicle is not required. - The heating mechanism initiated by the
battery system 50 may be any of a number of types of heating mechanisms well known in the art. One such suitable heating mechanism known in the art is a fuel such as diesel fuel. Another suitable heating mechanism known in the art is propane fuel. Another suitable heating mechanism known in the art is an electric powered heating system. - In an alternative embodiment, a sufficient number/size of solar panel(s) may be used, preferably in combination with a battery booster, to power not only burner ignition but also the burner/engine itself. For example, with a diesel-powered Spaulding patch cart it was found that about 16 amps were necessary to power the diesel burner heating the patch cart. Each solar panel referenced above provides about 3 amps of current. Accordingly, using two or more solar panels for powering a 12-volt battery, in conjunction with a battery booster, provides sufficient current to power the diesel burner without need for power assist from another vehicle.
- Other changes and modifications constituting insubstantial differences from the present invention, such as those expressed here or others left unexpressed but apparent to those of ordinary skill in the art, can be made without departing from the spirit and scope of the present invention and without diminishing its attendant advantages; It is, therefore, intended that such changes and modifications be covered by the following claims.
Claims (13)
1. A solar energy-assisted patch cart, comprising:
a heat-conductive support surface adapted to carry and heat a bituminous material placed within the patch cart;
a heating source located adjacent the support surface, for heating the support surface and, by heat conduction, the bituminous material; and
a battery powered at least in part by solar energy for igniting a burner associated with the heating source.
2. The solar energy-assisted patch cart of claim 1 , wherein the battery is in electrical communication with one or more solar panels.
3. The solar energy-assisted patch cart of claim 2 , wherein the solar panel(s) are located in a retractable fashion adjacent the patch cart, whereby when the patch cart is loaded with the bituminous material, the solar panel(s) may be inclined in a position to substantially avoid contact with the bituminous material as it is loaded.
4. The solar energy-assisted patch cart of claim 1 , wherein the heating source comprises a fuel.
5. The solar energy-assisted patch cart of claim 4 , wherein the fuel comprises diesel fuel.
6. The solar energy-assisted patch cart of claim 1 , wherein the bituminous material comprises asphalt.
7. A solar energy-assisted patch cart, comprising:
a heat-conductive support surface adapted to carry and heat a bituminous material placed within the patch cart;
a heating source located adjacent the support surface, for heating the support surface and, by heat conduction, the bituminous material;
a battery powered at least in part by solar energy for igniting a burner associated with the heating source; and
a charge controller in electrical communication with the battery, to facilitate maintaining the battery within a predetermined level of charge.
8. The solar energy-assisted patch cart of claim 7 , wherein the charge controller provides voltage control.
9. The solar energy-assisted patch cart of claim 7 , wherein the charge controller provides current limit control.
10. The solar energy-assisted patch cart of claim 7 , wherein the charge controller comprises a photovoltaic charge controller.
11. The solar energy-assisted patch cart of claim 7 , further comprising a power booster in electrical communication with the battery.
12. The solar energy-assisted patch cart of claim 7 , further comprising a volt/amp meter in electrical communication with the battery.
13. A solar energy-assisted patch cart, comprising:
a heat-conductive support surface adapted to carry and heat a bituminous material placed within the patch cart;
a heating source located adjacent the support surface, for heating the support surface and, by heat conduction, the bituminous material; and
solar panels in electrical communication with the heating source for selectively powering ignition and maintenance of the heating source.
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US10/984,201 US20060099031A1 (en) | 2004-11-10 | 2004-11-10 | Solar-assisted patch cart |
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US10/984,201 US20060099031A1 (en) | 2004-11-10 | 2004-11-10 | Solar-assisted patch cart |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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US8556536B2 (en) | 2009-01-02 | 2013-10-15 | Heatwurx, Inc. | Asphalt repair system and method |
US8562247B2 (en) | 2009-01-02 | 2013-10-22 | Heatwurx, Inc. | Asphalt repair system and method |
USD700633S1 (en) | 2013-07-26 | 2014-03-04 | Heatwurx, Inc. | Asphalt repair device |
US8801325B1 (en) | 2013-02-26 | 2014-08-12 | Heatwurx, Inc. | System and method for controlling an asphalt repair apparatus |
JP2015161086A (en) * | 2014-02-26 | 2015-09-07 | 日立建機株式会社 | Fire extinguisher installation structure on road machine |
US20150255006A1 (en) * | 2014-03-06 | 2015-09-10 | Matthew Kibbe | Photovoltaics Teaching Aid |
US9416499B2 (en) | 2009-12-31 | 2016-08-16 | Heatwurx, Inc. | System and method for sensing and managing pothole location and pothole characteristics |
US20170101744A1 (en) * | 2014-10-30 | 2017-04-13 | Falcon Road Maintenance Equipment | Burner unit having a low voltage sensor |
CN112342866A (en) * | 2020-12-06 | 2021-02-09 | 河南九一环保科技股份有限公司 | Asphalt processing method by utilizing solar energy for heating |
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US9416499B2 (en) | 2009-12-31 | 2016-08-16 | Heatwurx, Inc. | System and method for sensing and managing pothole location and pothole characteristics |
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