IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0220134
(2011-08-29)
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| 등록번호 |
US-8672584
(2014-03-18)
|
|
발명자
/ 주소 |
- Koerner, Dennis Wayne
- Ring, Carl David
- Jackson, Jonathan Browning
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| 출원인 / 주소 |
|
| 대리인 / 주소 |
Kilpatrick Townsend & Stockton LLP
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| 인용정보 |
피인용 횟수 :
0 인용 특허 :
53 |
초록
▼
Polystyrene drainage beads having optimized shapes to provide increased specific gravity and void volume at a given bulk density. Expanded forms of such drainage beads may be used as a geosynthetic aggregate in pre-assembled drainage units. Such pre-assembled drainage units may be used as foundation
Polystyrene drainage beads having optimized shapes to provide increased specific gravity and void volume at a given bulk density. Expanded forms of such drainage beads may be used as a geosynthetic aggregate in pre-assembled drainage units. Such pre-assembled drainage units may be used as foundation drains, septic drainage fields, or for other applications.
대표청구항
▼
1. An aggregate comprising a plurality of polystyrene drainage beads, wherein at least some of the drainage beads comprise: (a) a central spine including a first side and a second side opposite the first side;(b) at least three first legs extending from the first side of the central spine and defini
1. An aggregate comprising a plurality of polystyrene drainage beads, wherein at least some of the drainage beads comprise: (a) a central spine including a first side and a second side opposite the first side;(b) at least three first legs extending from the first side of the central spine and defining a plurality of first channels between the first legs, wherein the first channels are wider than the first legs;(c) at least three second legs extending from the second side of the central spine and defining a plurality of second channels between the second legs; and(d) a uniform, solid cross-sectional shape along an axis of extension. 2. The aggregate of drainage beads of claim 1, wherein the plurality of polystyrene drainage beads are expanded polystyrene drainage beads. 3. The aggregate of drainage beads of claim 2, wherein the cross-sectional shape is perpendicular to the axis of extension, and defines a cross-sectional area and a cross-sectional perimeter, wherein the ratio of the cross-sectional perimeter to the cross-sectional area is greater than 7.7. 4. The aggregate of drainage beads of claim 2, wherein the central spine defines a spine width extending between the plurality of first and second legs and wherein the plurality of first and second legs each define a leg length extending away from the central spine; wherein the ratio of the leg length to the spine width is greater than 0.75. 5. The aggregate of drainage beads of claim 4, wherein the plurality of first and second legs each define a leg width; wherein the ratio of the leg length to the leg width is greater than 1.35. 6. The aggregate of drainage beads of claim 4, wherein the plurality of first legs includes a central leg that is longer than the other first legs. 7. The aggregate of drainage beads of claim 2, further comprising a perforated sleeve enclosing the plurality of drainage beads. 8. The aggregate of drainage beads of claim 7, further comprising a pipe extending from a first end of the perforated sleeve to a second end of the perforated sleeve. 9. The aggregate of drainage beads of claim 1, wherein the plurality of polystyrene drainage beads are un-expanded polystyrene drainage beads. 10. The aggregate of drainage beads of claim 9, wherein the cross-sectional shape is perpendicular to the axis of extension, and defines a cross-sectional area and a cross-sectional perimeter, wherein the ratio of the cross-sectional perimeter to the cross-sectional area is greater than 53. 11. The aggregate of drainage beads of claim 9, wherein the central spine defines a spine width extending between the plurality of first and second legs and wherein the plurality of first and second legs each define a leg length extending away from the central spine; wherein the ratio of the leg length to spine width is greater than 2. 12. The aggregate of drainage beads of claim 1, wherein at least some of the drainage beads further comprise a first arm extending from a third side of the central spine and a second arm extending from a fourth side of the central spine. 13. The aggregate of drainage beads of claim 12, wherein the first and second arms extend in substantially perpendicular directions to the first and second legs. 14. The aggregate of drainage beads of claim 1, wherein the central spine and first and second legs are substantially planar. 15. The aggregate of drainage beads of claim 1, wherein the second channels are wider than the second legs. 16. An aggregate comprising a plurality of expanded polystyrene drainage beads, wherein at least some of the drainage beads comprise: (a) a central spine including a first side and a second side opposite the first side;(b) at least three first legs extending from the first side of the central spine and defining a plurality of first channels between the first legs;(c) at least three second legs extending from the second side of the central spine and defining a plurality of second channels between the second legs; and(d) a uniform, solid cross-sectional shape along an axis of extension, wherein the cross-sectional shape is perpendicular to the axis of extension and defines a cross-sectional area and a cross-sectional perimeter, wherein the ratio of the cross-sectional perimeter to the cross-sectional area is greater than 8. 17. The aggregate of drainage beads of claim 16, wherein the first channels are wider than the first legs and the second channels are wider than the second legs. 18. The aggregate of drainage beads of claim 16, wherein the central spine defines a spine width extending between the at least three first and second legs; wherein the at least three first and second legs each define a leg length extending away from the central spine; and wherein the ratio of the leg length to spine width is greater than 0.8. 19. The aggregate of drainage beads of claim 18, wherein the at least three first and second legs each define a leg width; wherein the ratio of the leg length to leg width is greater than 1.4. 20. The aggregate of drainage beads of claim 19, wherein the at least three first legs include a central leg that is longer than the other first legs. 21. The aggregate of drainage beads of claim 16, further comprising a perforated sleeve enclosing the plurality of drainage beads. 22. The aggregate of drainage beads of claim 21, further comprising a pipe extending from a first end of the perforated sleeve to a second end of the perforated sleeve. 23. An aggregate comprising a plurality of expanded polystyrene drainage beads, wherein at least some of the drainage beads comprise: (a) a central spine including a first side and a second side opposite the first side;(b) at least three first legs extending from the first side of the central spine and defining a plurality of first channels between the first legs, wherein the first channels are wider than the first legs;(c) at least three second legs extending from the second side of the central spine and defining a plurality of second channels between the second legs;(d) a first arm extending from a third side of the central spine and a second arm extending from a fourth side of the central spine, wherein the first and second arms extend in substantially perpendicular directions to the first and second legs; and(e) a uniform, solid cross-sectional shape along an axis of extension, wherein the cross-sectional shape is perpendicular to the axis of extension and defines a cross-sectional area and a cross-sectional perimeter, wherein the ratio of the cross-sectional perimeter to the cross-sectional area is greater than 8; wherein a perforated sleeve encloses the plurality of drainage beads. 24. The aggregate of drainage beads of claim 23, wherein the second channels are wider than the second legs. 25. An aggregate comprising a plurality of expanded polystyrene drainage beads, wherein at least some of the drainage beads comprise: (a) a central spine including a first side and a second side opposite the first side;(b) at least three first legs extending from the first side of the central spine and defining a plurality of first channels between the first legs;(c) at least three second legs extending from the second side of the central spine and defining a plurality of second channels between the second legs; and(d) a uniform, solid cross-sectional shape along an axis of extension; wherein the central spine defines a spine width extending between the plurality of first and second legs; wherein the plurality of first and second legs each define a leg length extending away from the central spine; and wherein the ratio of the leg length to spine width is greater than 0.8. 26. An aggregate comprising a plurality of expanded polystyrene drainage beads, wherein at least some of the drainage beads comprise: (a) a central spine including a first side and a second side opposite the first side;(b) at least three first legs extending from the first side of the central spine and defining a plurality of first channels between the first legs;(c) at least three second legs extending from the second side of the central spine and defining a plurality of second channels between the second legs; and(d) a uniform, solid cross-sectional shape along an axis of extension; wherein the plurality of first and second legs each define a leg length extending away from the central spine, and wherein the plurality of first and second legs each define a leg width; wherein the ratio of the leg length to leg width is greater than 1.4. 27. An aggregate comprising a plurality of expanded polystyrene drainage beads, wherein at least some of the drainage beads comprise: (a) a central spine including a first side and a second side opposite the first side;(b) at least three first legs extending from the first side of the central spine and defining a plurality of first channels between the first legs;(c) at least three second legs extending from the second side of the central spine and defining a plurality of second channels between the second legs;(d) a first arm extending from a third side of the central spine and a second arm extending from a fourth side of the central spine, wherein the first and second arms extend in substantially perpendicular directions to the first and second legs; and(e) a uniform, solid cross-sectional shape along an axis of extension; wherein the first and second arms each define arm length, wherein the plurality of first and second legs each define a leg width, and wherein the ratio of arm length to leg width is greater than 0.25.
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