BASIC STRUCTURES MADE FROM RECYCLED SCRAP TIRES
A dock bumper made from rubber material derived from scrap tires with a trapezoidal cross-section, a trapezoidal side profile, a base, and an optional longitudinal lumen. The longitudinal lumen also has a trapezoidal cross-section and may be open at one or both ends. The dock bumper is further provided with mounting holes for mounting on a surface. The mounting hole includes an opening for a fastener and an indentation in which a plug maybe securely installed to cover the fastener. A guardrail cover adapted for installation over a conventional crash barrier guardrail. A variety of rubber encased pillars, including crash barrier pillars on which guardrails are mounting, coast walls, and railroad ties. The rubber encased pillars are concrete-filled steel beams encased in rubber material derived from recycled scrap tires. The rubber encased railroad ties include raised sections for mounting and supporting railroad tracks.
1. Field of the Invention
This invention relates to basic structures for civil engineering applications made from recycled scrap tires.
2. Related Art
The U.S. Environmental Protection Agency (“EPA”) estimated that 290 million scrap tires were generated in 2003, in addition to the 275 million scrap tires in existing stockpiles at that time. Scrap tires are recycled to produce crumb rubber, via processes in which the steel and fiber reinforcement components of the tires are removed. The single largest U.S. market for crumb rubber is asphalt rubber, in the construction of highways and other roadways. The EPA also lists other civil engineering applications for crumb rubber, predominantly as filler material.
In the past, whole scrap tires have been used as dock bumpers on piers, marinas, and bridges, and as crash barriers. However, such uses of whole scrap tires are not ideal as they first require substantially uniform tire sizes. Even if this first requirement is achieved, the different degrees of fatigue or wear and tear of the tires preclude uniform impact absorption.
SUMMARYThis invention is directed to a variety of basic structures for civil engineering applications made from rubber material derived from the recycling of scrap tires, including, for example, dock bumpers, guardrails and guardrail covers, rubber encased pillars, coast walls, and rubber encased railroad ties. The rubber components of these structures are made from recycled scrap tires. During the recycling process, the scrap tires are shredded and the steel and fiber reinforcement components of the tires are removed to yield “crumb” rubber. Rubber material is recovered from the crumb rubber and renewed to produce the starting rubber material for the manufacture of these products. The appropriate die, for example, a steel-rule die, can then be used to make the products from the starting rubber material.
With reference to the drawings,
The dock bumper 10 illustrated in
The dock bumper 10 illustrated in
In other embodiments the dock bumper is not provided with a lumen.
As shown in
The dimensions of dock bumper 10 or dock bump 20 may be varied to conform to the surface of the structure on which dock bumpers are installed, and/or to adjust the degree of impact absorption.
Dock bumpers 10 and 20 are made from crumb rubber from recycled scrap tires. During the first phase of the recycling process, the scrap tires are shredded and the steel and fiber reinforcement components of the tires are separated and removed, leaving granular or “crumb” rubber, typically with a particle size of approximately 40 mesh. The crumb rubber may then undergo additional processing to reduce the particle size.
In the second phase of the recycling process, rubber material is recovered from the crumb rubber and renewed to produce the starting rubber material for the manufacture of dock bumpers (and other products). The appropriate die, for example, a steel-rule die, can then be used to make the dock bumpers from the starting rubber material.
Dock bumpers made from rubber recycled from scrap tires offer the advantages of being water-proof, impact-resistant, erosion-proof, corrosion-proof and insect-proof. Compared to the use of whole scrap tires as boat bumpers at wharfs, piers, and marinas, the dock bumpers of the present invention further offer the advantages of improved aesthetics and more uniform impact protection.
While nominally called “dock bumpers,” the dock bumpers of this invention may also be mounted on supporting pillars of bridges and other structures to protect against accidental impact from vehicles, in addition to structures against which vehicles may be docked.
2. Crash Barriers and Guard RailsAccording to another aspect of this invention, crash barriers with guardrails are made from crumb rubber obtained from the recycling of scrap tires. Crash barriers with guardrails may be installed along the sides of roadways to protect motorists, cyclists, pedestrians and buildings, or as center dividers to separate traffic in opposite directions.
The dimensions of the guardrail cover 40 are not limited and may be varied as necessary to ensure an appropriate fit over the guardrail 44 on which the guardrail cover 40 is installed. The thickness of the guardrail cover 40 may also be varied to adjust the degree of impact absorption.
The guardrail covers 40 are made from crumb rubber derived from recycled scrap tires. In the first phase of the recycling process, the scrap tires are shredded and the steel and fiber reinforcement components of the tires are separated and removed, leaving granular or “crumb” rubber, typically with a particle size of approximately 40 mesh. The crumb rubber may then undergo additional processing to reduce the particle size.
In the second phase of the recycling process, rubber material is recovered from the crumb rubber and renewed to produce the starting rubber material for the manufacture of guardrail covers. The appropriate die, for example, a steel-rule die, can then be used to make the guardrail covers from the starting rubber material.
Additionally, guardrail cover 40 may be made from rubber material formulated with colored dyes to improve its visibility at night or during inclement weather. Reflective tape or paint may also be applied onto guardrail cover 40 to improve its visibility.
Compared to conventional guardrails, the addition of guardrail cover 40 improves impact protection, especially during low speed collisions between vehicles and guardrails.
3. Rubber Encased PillarThe cross-sectional shape and dimensions of the rubber encased pillars 46 are not limited, and may be varied as necessary to provide an appropriate mounting height for guardrail 44, and to meet other safety considerations relating to potential collisions between vehicles and guardrail 44 and/or pillar 46.
According to another aspect of this invention, a plurality of rubber encased pillars 46 can be bound or linked together with steel cables to form a coast wall, to be installed along a coast or river bank to mitigate erosion or scouring of the coastline or river bank.
The rubber encased pillars 46 are made from crumb rubber derived from recycled scrap tires. During the first phase of the recycling process, the scrap tires are shredded and the steel and fiber reinforcement components of the tires are separated and removed, leaving granular or “crumb” rubber, typically with a particle size of approximately 40 mesh. The crumb rubber may then undergo additional processing to reduce the particle size.
In the second phase of the recycling process, rubber material is recovered from the crumb rubber and renewed to produce the starting rubber material for manufacturing rubber encased pillars (and other products). The steel-beam core is preferably encased in the starting rubber material without the use of special binders or glues.
4. Rubber Encased Railroad TiesAccording to yet another aspect of this invention, a rubber encased railroad tie is made from crumb rubber obtained from recycled scrap tires. Similar to the rubber encased pillar 46 discussed above with reference to
In another embodiment, the steel beam core itself may have a raised section at each end, and be encased in a layer of rubber material of substantially uniform thickness to form a rubber encased railroad tie.
Highly durable, these rubber encased railroad ties have steel-beam core filled with concrete that is then encased in 140 to 150 pounds of rubber material, preferably without the use of a special binder or glue. These railroad ties are over 200% stronger than wooded ties, and used longer than wood or concrete railroad ties. In some embodiments, the size of the railroad ties is 10 inches by 10 inches by 96 inches.
Claims
1. A dock bumper made from rubber material derived from scrap tires.
2. The dock bumper of claim 1, wherein the dock bumper has a trapezoidal cross-section and a trapezoidal side profile.
3. The dock bumper of claim 2, wherein the dock bumper additionally comprises a base.
4. The dock bumper of claim 3, wherein the base is integrated with the dock bumper.
5. (canceled)
6. The dock bumper of claim 4, additionally comprising a longitudinal lumen.
7. The dock bumper of claim 6, wherein the longitudinal lumen has a trapezoidal cross-section.
8. The dock bumper of claim 8, additionally comprising a mounting hole for mounting the dock bumper onto a surface.
9. (canceled)
10. (canceled)
11. The dock bumper of claim 8, additionally comprising a mounting hole for mounting the dock bumper onto a surface.
12. The dock bumper of claim 11, the mounting hole additionally comprising an opening adapted for a fastener for mounting the dock bumper onto the surface, and an indentation adapted for installing a plug to cover the fastener.
13. The dock bumper of claim 12, wherein the opening is circular and the indentation is square.
14. The dock bumper of claim 12, wherein the plug additionally comprises a recess adapted to fit securely over a head of the fastener.
15. (canceled)
16. (canceled)
17. (canceled)
18. (canceled)
19. (canceled)
20. (canceled)
21. A rubber encased pillar made from rubber material derived from scrap tires.
22. The rubber encased pillar of claim 21, comprising a steel beam core encases in rubber material.
23. The rubber encased pillar of claim 22, wherein the steel beam core is filled with concrete.
24. The rubber encased pillar of claim 23, wherein the rubber encased pillar has a square cross-section.
25. The rubber encased pillar of claim 24, additionally comprising a mounting hole.
26. (canceled)
27. A rubber encased railroad tie made from rubber material derived from scrap tires.
28. The rubber encased railroad tie of claim 27, comprising a steel beam core encased in rubber material.
29. (canceled)
30. The rubber encased railroad tie of claim 28, wherein the steel beam core has a constant rectangular cross-section, the railroad tie additional comprising two raised rubber sections.
31. The rubber encased railroad tie of claim 28, wherein the steel beam core has a raised section at each end.
32. The rubber encased railroad tie of claim 30, additionally comprising mounting holes for mounting a railroad track.
Type: Application
Filed: Apr 15, 2013
Publication Date: Oct 16, 2014
Inventor: Da Lei (San Diego, CA)
Application Number: 13/863,084
International Classification: E01B 3/44 (20060101); E01B 3/46 (20060101); E04C 3/36 (20060101); E02B 3/26 (20060101);