WO2005085530B1 - Process and apparatus for highway marking - Google Patents

Process and apparatus for highway marking

Info

Publication number
WO2005085530B1
WO2005085530B1 PCT/US2004/036523 US2004036523W WO2005085530B1 WO 2005085530 B1 WO2005085530 B1 WO 2005085530B1 US 2004036523 W US2004036523 W US 2004036523W WO 2005085530 B1 WO2005085530 B1 WO 2005085530B1
Authority
WO
WIPO (PCT)
Prior art keywords
road
combustion chamber
combustible
oxidizer
beads
Prior art date
Application number
PCT/US2004/036523
Other languages
French (fr)
Other versions
WO2005085530A1 (en
Inventor
George Jay Lichtblau
Original Assignee
Lichtblau G J
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/863,651 external-priority patent/US6969214B2/en
Application filed by Lichtblau G J filed Critical Lichtblau G J
Priority to EP04800633A priority Critical patent/EP1711658A4/en
Priority to CA002548959A priority patent/CA2548959A1/en
Priority to AU2004316922A priority patent/AU2004316922A1/en
Priority to JP2006552103A priority patent/JP2007520655A/en
Publication of WO2005085530A1 publication Critical patent/WO2005085530A1/en
Publication of WO2005085530B1 publication Critical patent/WO2005085530B1/en

Links

Classifications

    • 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
    • E01C23/16—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings
    • E01C23/20—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ
    • E01C23/206—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ by applying fusible particulate material to the surface, e.g. by means of a gaseous stream

Abstract

A process and apparatus for forming a coherent refractory mass on the surface of a road wherein one or more non-combustible materials are mixed with one or more metallic combustible powders (2) and an oxidizer (7), igniting the mixutre so that the combustible metallic particles (2) react in an exothermic manner with the oxidizer (7)and release sufficient heat to form a coherent mass under the action of the heat of combusiont and projectin ghtis mass agains the surface of a road so that the mass adheres durable to the surface of the road.

Claims

AMENDED CLAIMS [Received by the International Bureau on 23 August 2005 (23/08/2005); original claims 1, 3, 5, 7, 17 and 53 have been amended ; original claim 16 has been cancelled].
1. A process for forming a coherent refractory mass on the surface of a road comprising the steps of: mixing one or more non-combustible materials with one or more metallic combustible powders and an oxidizer; igniting the mixture in a combustion chamber so that the combustible particles react in an exothermic manner with the oxidizer inside the combustion chamber and release sufficient heat to form a high temperature coherent refractory mass under the action of the heat of combustion; and projecting said high temperature mass from the combustion chamber onto the surface of the road so that the mass adheres durably to the surface of the road.
2. The .process of claim 1 wherein the non-combustible material is selected from the group consisting of titanium dioxide, aluminum oxide, chromium oxide, silicon dioxide, magnesium oxide, iron oxide, crushed colored glass, or a mixture of two or more thereof; and and wherein the combustible powder is selected from the group consisting of aluminum, silicon, zinc, magnesium, zirconium, and chromium or a mixture of two or more thereof.
3. The process of claim 1 wherein the oxidizer is selected from the group consisting of air, oxygen, ammonium perchlorate, ammonium nitrate, potassium perchlorate, potassium nitrate, sodium perchlorate, sodium nitrate, potassium chlorate and sodium chlorate or a mixture of two or more thereof.
29
4. The process of claim 1 wherein the non-combustible material is chromium oxide produced from refused grain brick.
5j. The process of claim 1 wherein the non-combustible material is refused grain brick known commercially as CORHART RFG or CORHART 104 Grades.
6. The process of claim 1 wherein the non-combustible material is magnesite regenerate.
7. The process of claim 1 wherein the non-combustible material is CORHART-ZAC refractory material.
8. The process of claim 1 wherein the non-combustible material is Al203-/Bauxite-Regenerate.
9. The process of claim 1 wherein the oxidizer contains an anti-caking or flow agent.
10. The process of claim 9 wherein the flow agent is TCP (Tricalcium Phosphate) .
11. The process of claim 1 wherein Iron Oxide (Fe2θ3) is used as a catalyst in the mixture.
12. The process of claim 1 wherein the mixing step includes introducing a coloring material to the mixture which when heated in the presence of the other materials causes the color of the refractory mass to be a predetermined color.
30
13. The process of claim 12 wherein the color is white, yellow, red, or blue.
14. The process of claim 12 wherein the coloring material is tungsten, zirconium, or iron oxide (-Te203).
15. The process of claim 12 wherein the coloring material is crushed colored glass.
16. (Cancelled)
17. The process of claim 1 including the step of supplying oxygen to the combustion chamber to assist in the burning of the one or more metallic combustible powders.
18. The process of claim 1 wherein the mixing step is accomplished in the combustion chamber.
19. The process of claim 1 wherein the mixing step is accomplished prior to entry of the mixture into the combustion chamber.
20. The process of claim 1 including the step of preheating the surface of the road prior to projection of the refractory mass onto the surface of the road.
21. The process of claim 1 including the step of adding retroreflective beads to the refractory mass prior to projecting the mass onto the surface of the road.
22. The process of claim 1 including the step of depositing retrore lective beads upon the refractory mass after the mass has been projected onto the road surface.
23. The process of claim 1 including the step of controlling the rate of deposition of the refractory mass such that the mass projected upon the road surface has a substantially uniform thickness.
24. The process of claim 21 wherein the retroreflective beads added to the mixture are softened by the heat of reaction to cause the beads to adhere durably to the surface of the road.
25. Apparatus for forming a coherent refractory mass on the surface of a road, the apparatus comprising: a combustion chamber adapted to be disposed on a surface of a road; a first supply line for transporting one or more metallic combustible powders and one or more non-combustible materials to the combustion chamber; a second supply line for transporting an oxidizer to the combustion chamber; and an igniter associated with the combustion chamber and operative to ignite the combustible powder, non-combustible material and oxidizer in the combustion chamber to cause the metallic combustible powder to react in an exothermic manner with the oxidizer and release sufficient heat to form a refractory mass which is projected against the surface of the road so that the mass adheres durably to the road surface.
32
26. The apparatus of claim 25 wherein the first supply line includes a carrier for transporting the combustible powder from the first container to the combustion chamber; and wherein the second supply line includes a carrier for transporting the oxidizer from the second container to the combustion chamber.
27. The apparatus of claim 25 including a third supply line for supplying air to the combustion chamber to supply additional oxygen and to assist in projecting the refractory mass against the surface of the road.
28- The apparatus of claim 25 including a third supply line for supplying additional oxygen to the combustion chamber to assist in the burning of the metallic combustible powde (s).
29. The apparatus of claim 26 including a third supply line for supplying air to the combustion chamber to supply additional oxygen to assist in projecting the refractory mass against the surface of the road.
30. The apparatus of claim 25 including an additional supply line for supplying a coloring material to the mixture, which when heated in the presence of the other materials causes the color of the refractory mass to be yellow.
31. The apparatus of claim 30 wherein the coloring material is tungsten, zirconium, or iron oxide ( e2θ3) ■ 32. The apparatus of claim 30 wherein the coloring material is crushed colored glass.
33
33. The apparatus of claim 26 wherein the carrier in the first supply line and second supply line is air.
34. The apparatus of claim 25 wherein the igniter is an electric arc or a plasma arc.
35. The apparatus of claim 25 wherein the igniter is a gas pilot light.
36, The apparatus of claim 25 wherein the rate of delivery of the metallic combustible powder (s) is controlled by a screw conveyor driven by a variable speed motor.
37. The apparatus of claim 25 wherein the oxidizer is a powdered oxidizer and the rate of delivery of the powdered oxidizer is controlled by a screw conveyor driven by a variable speed motor.
38. The apparatus of claim 25 wherein the rate of delivery of the metallic combustible powder (s) is controlled by means of a variable valve which controls a gas carrier.
39. The apparatus of claim 25 wherein the oxidizer is a powdered oxidizer and the rate of delivery of the powdered oxidizer is controlled by a variable valve that controls a gas carrier.
40. The apparatus of claim 28 wherein the delivery rate of oxygen is controlled by a variable valve.
41. The apparatus of claim 25 including a line painting assembly associated with the apparatus and wherein the rate of
34 deposition of the coherent mass onto the road surface is controlled by the speed of the line painting assembly along the road surface.
42. The apparatus of claim 25 including a separate supply line to transport retro-reflective beads to the combustion chamber so that the heat of reaction softens the surface of the retro- reflective beads and causes the beads to adhere durably to the surface of the road.
43. The apparatus of claim 42 wherein the retro-re lective beads are injected into the hottest part of the combustion chamber so that the heat of reaction softens the surface of the retro-reflective beads and causes the beads to adhere durably to the surface of the road.
44. The apparatus of claim 42 wherein the retro-reflective beads are injected into a cooler portion of the combustion chamber wherein the temperature is sufficient to soften the surface of the retro-reflective beads and causes the beads to adhere durably to the surface of the road but the temperature is insufficient to cause a major distortion or destruction of the retro-re lective beads.
45. The apparatus in claim 25 wherein one supply line contains a carrier to transport the oxidizer and part of the non- combustible materials.
46. The apparatus in claim 25 wherein one supply line contains a carrier to transport the metallic combustible powder (s) and part of the non-combustible materials.
35
47. The apparatus of claim 25 wherein the combustion chamber is made of a ceramic material.
48. The apparatus of claim 25 wherein the combustion chamber contains openings which act as venturi to draw in air and cool the inside surface of the combustion chamber.
49. The apparatus of claim 25 wherein the combustion chamber is made of metal that is coated on the inside with a ceramic coating.
50. For use in the process of claim 1, a road marking composition comprising at least one non-combustible dry powder and at least one combustible dry powder wherein when the mixture is ignited in the presence of an oxidizer, the combustible powder reacts in an exothermic manner with the oxidizer and releases sufficient heat to form a refractory mass under the action of the heat of combustion and cause the refractory mass to adhere durably to the surface of a road.
51. The composition of claim 50 wherein the non-combustible powder is selected from the group consisting of titanium dioxide, aluminum oxide, silicon dioxide, chromium oxide, magnesium oxide, iron oxide, zirconium oxide, or a mixture of two or more thereof; and wherein the combustible powder is selected from the group consisting of aluminum, silicon, zinc, magnesium, chromium, zirconium, or a mixture of two or more thereof.
52. The composition of claim 50 wherein the oxidizer is selected from the group consisting of air, compressed oxygen, liquid oxygen, ammonium perchlorate, ammonium nitrate, potassium
36 perchlorate, potassium nitrate, sodium perchlorate, sodium nitrate, potassium chlorate and sodium chlorate or a mixture of two or more thereof.
53. The composition of Claim 50 wherein the non-combustible powder is known commercially as CORHART RFG or CORHART 104 Grades .
54. The composition of claim 50 where the non-combustible material is Magnesite regenerate.
55. The composition of Claim 50 wherein the non-combustible material is aluminum oxide/Bauxite-Regenerate.
56. The composition of claim 50 including iron oxide used as a catalyst in the mixture.
57. The composition of claim 50 including a coloring material that, when heated in the presence of the other materials, causes the color of the refractory mass to be a predetermined color.
58. The composition of Claim 57 wherein the coloring material produces a color of yellow, red or blue.
59- The composition of claim 57, wherein the coloring material consists of tungsten, zirconium, iron oxide, or crushed colored glass .
60. The road marking composition of claim 50 comprising titanium dioxide and silicon.
37
61. The road marking composition of claim 50, comprising titanium dioxide, silicon dioxide, and silicon.
62. The road marking composition of claim 50, comprising aluminum oxide and silicon.
63. The road marking composition of claim 50, comprising aluminum oxide, silicon dioxide, and silicon.
64. The road marking composition of claim 50, comprising iron oxide (Fe203) and silicon.
65. The road marking composition of claim 50, comprising iron oxide (Fe203), silicon dioxide, and silicon.
66. The road marking composition of claim 50, comprising magnesium oxide and silicon.
67. The road marking composition of claim 50, comprising magnesium oxide, silicon dioxide, and silicon.
68. Apparatus for forming a coherent refractory mass on the surface of a road, the apparatus comprising: a combustion chamber adapted to be disposed on a surface of a road; a single supply line for transporting one or more metallic combustible powders, one or more non-combustible materials and an oxidizer to the combustion chamber; and an igniter associated with the combustion chamber and operative to ignite the combustible powder, non-combustible material, and oxidizer in the combustion chamber to cause the metallic combustible powder to react in an exothermic manner
38 with the oxidizer and release sufficient heat to form a refractory mass that is projected against the surface of the road so that the mass adheres durably to the road surface.
69. The apparatus of claim 68, wherein the igniter is an electric arc.
70. The apparatus of claim 68, wherein the igniter is a gas pilot light.
71. The apparatus of claim 68, wherein the igniter is a plasma arc.
72. The apparatus of claim 68, wherein the rate of delivery of the combustible and non-combustible powders is controlled by a screw conveyor driven by a variable speed motor and a variable valve that controls the rate of delivery of air, oxygen, or a mixture of air and oxygen.
73. The apparatus of claim 68, wherein the rate of deposition of the coherent mass onto the surface of the road is controlled by the rate of movement between the surface of the road and the exit of the combustion chamber or vice-versa.
74. The apparatus of claim 68, wherein the combustion chamber is made of a ceramic material.
75. The apparatus of claim 68, wherein the combustion chamber contains openings that act as venturi to draw in air and cool the inside surface of the combustion chamber.
39
76. The apparatus of claim 68, wherein the combustion chamber is made of metal that is coated on the inside with a high temperature metal or ceramic coating.
77. The apparatus of claim 68 including a separate supply line to transport retro-reflective beads to the combustion chamber so that the heat of reaction softens the surface of the retro- reflective beads and causes the beads to adhere durably to the surface of the road.
78. The apparatus of claim 68 wherein the retro-reflective beads are injected into the hottest part of the combustion chamber so that the heat of reaction softens the surface of the retro-reflective beads and causes the beads to adhere durably to the surface of the road.
79. The apparatus of claim 68 wherein the retro-reflective beads are injected into a cooler portion of the combustion chamber wherein the temperature is sufficient to soften the surface of the retro-reflective beads and causes the beads to adhere durably to the surface of the road but the temperature is insufficient to cause a major distortion or destruction of the retro-reflective beads.
40
PCT/US2004/036523 2004-02-06 2004-11-02 Process and apparatus for highway marking WO2005085530A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP04800633A EP1711658A4 (en) 2004-02-06 2004-11-02 Process and apparatus for highway marking
CA002548959A CA2548959A1 (en) 2004-02-06 2004-11-02 Process and apparatus for highway marking
AU2004316922A AU2004316922A1 (en) 2004-02-06 2004-11-02 Process and apparatus for highway marking
JP2006552103A JP2007520655A (en) 2004-02-06 2004-11-02 Road marking method and apparatus therefor

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US77419904A 2004-02-06 2004-02-06
US10/774,199 2004-02-06
US10/863,651 2004-06-08
US10/863,651 US6969214B2 (en) 2004-02-06 2004-06-08 Process and apparatus for highway marking

Publications (2)

Publication Number Publication Date
WO2005085530A1 WO2005085530A1 (en) 2005-09-15
WO2005085530B1 true WO2005085530B1 (en) 2005-10-13

Family

ID=34841275

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/036523 WO2005085530A1 (en) 2004-02-06 2004-11-02 Process and apparatus for highway marking

Country Status (6)

Country Link
US (2) US7052202B2 (en)
EP (1) EP1711658A4 (en)
JP (1) JP2007520655A (en)
AU (1) AU2004316922A1 (en)
CA (1) CA2548959A1 (en)
WO (1) WO2005085530A1 (en)

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Also Published As

Publication number Publication date
US20050181121A1 (en) 2005-08-18
EP1711658A1 (en) 2006-10-18
JP2007520655A (en) 2007-07-26
WO2005085530A1 (en) 2005-09-15
CA2548959A1 (en) 2005-09-15
US20050196236A1 (en) 2005-09-08
AU2004316922A1 (en) 2005-09-15
US7073974B2 (en) 2006-07-11
EP1711658A4 (en) 2008-11-26
US7052202B2 (en) 2006-05-30

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