ROAD REPAIR SYSTEMS
1 Assignment
0 Petitions
Accused Products
Abstract
A range of various sized attachments of infrared heaters powered by liquid petroleum gas (LPG) for installation to a number of different styles of vehicles. These infrared heaters are designed to heat asphalt and other road and structure surfaces for subsequent repair. The vehicles may be an adaptation to existing designs of medium to heavy road going flat bed trucks or to various types of construction loaders. The attachments to construction loaders may be installed as adaptions to front end loader quick-change systems or back hoe bucket mount positions. The whole attachment and its support operating and control assembly may be easily removed for addition to other vehicles of similar types. With the area heated to an appropriate temperature to release the bound surface structure it can then be raked and combined with minimal amounts of new surface fill if required to the previously damaged area. A rejuvenating liquid is then sprayed onto the mix, prior to compaction to provide a fast, economic, quiet and more environmentally friendly means of road repair than traditional methodology.
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Citations
37 Claims
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1-20. -20. (canceled)
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21. An asphalt surface repair apparatus comprising:
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a vehicle road repair system that includes a heating gas source; at least one gas fired heater carried by the vehicle and adapted to be moved towards and away from the surface to be repaired comprising; a downwardly facing metal fabric heater blanket and adapted to face the surface to be repaired which supplies heat by burning a mixture of combustible gas and air on the downwardly facing surface; wherein gas is supplied from the heating gas source and pre-mixed with air and the mixture is passed through the metal fabric heater blanket and is ignited on the downwardly facing surface of the blanket facing the surface to be repaired and a control system is provided to control the duration of heating to enable re-use of existing asphalt. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A method for repairing an asphalt surface comprising the steps of:
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a) heating the surface to be repaired by burning gas on the downwardly facing surface of one or more knitted metal fabric infrared heaters adapted to be moved towards and away from the surface to be repaired, the heating being to a depth of about 10 mm to about 100 mm from the surface to be repaired, wherein the average heating temperature is from about 50 to about 200°
C., and the heating is for from about 5 to about 20 minutes;b) applying a timing control system across the heating cycle to optimize the penetration of the heat into the asphalt to be repaired; c) breaking up the heated surface to be repaired by raking, scarifying, or both; d) compacting the surface to be repaired; and e) cooling the surface to be repaired to harden the asphalt. - View Dependent Claims (33, 34, 35, 36, 37)
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Specification