IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0023386
(2008-01-31)
|
등록번호 |
US-7567739
(2009-08-05)
|
발명자
/ 주소 |
- Overton, Bob J.
- Cheatle, Wayne
- DeChristopher, Greg
|
출원인 / 주소 |
|
대리인 / 주소 |
Summa, Additon & Ashe, P.A.
|
인용정보 |
피인용 횟수 :
92 인용 특허 :
36 |
초록
▼
Disclosed is a fiber optic cable that includes optical fibers and a water-swellable element, such as a powder-free fabric tape, that are enclosed within a buffer tube. Adhesive material, such as discrete domains of adhesive foam, may be optionally employed to provide adhesive coupling of the optical
Disclosed is a fiber optic cable that includes optical fibers and a water-swellable element, such as a powder-free fabric tape, that are enclosed within a buffer tube. Adhesive material, such as discrete domains of adhesive foam, may be optionally employed to provide adhesive coupling of the optical fibers and the water-swellable element.
대표청구항
▼
The invention claimed is: 1. A fiber optic cable, comprising: an optical fiber bundle of one or more optical fibers; a buffer tube enclosing said optical fiber bundle; a dry water-swellable element, wherein said water-swellable element (i) is disposed between said optical fiber bundle and said buff
The invention claimed is: 1. A fiber optic cable, comprising: an optical fiber bundle of one or more optical fibers; a buffer tube enclosing said optical fiber bundle; a dry water-swellable element, wherein said water-swellable element (i) is disposed between said optical fiber bundle and said buffer tube, (ii) substantially encloses said optical fiber bundle, and (iii) is substantially free of superabsorbent particulate powders; and a plurality of discrete domains of adhesive foam adhesively coupling said water-swellable element and said optical fiber bundle. 2. A fiber optic cable according to claim 1, wherein said water-swellable element possesses a compressibility of between about one percent and 90 percent under a load of 1.0 gram per square centimeter. 3. A fiber optic cable according to claim 1, wherein said water-swellable element comprises a nonwoven fabric that includes water-swellable polymeric fibers. 4. A fiber optic cable according to claim 1, wherein said water-swellable element comprises a woven fabric that includes water-swellable polymeric fibers. 5. A fiber optic cable according to claim 1, wherein said water-swellable element comprises a knit fabric that includes water-swellable polymeric fibers. 6. A fiber optic cable according to claim 1, wherein the fiber optic cable is essentially free of thixotropic filling gel or grease. 7. A fiber optic cable according to claim 1, wherein said water-swellable element possesses an uncompressed density of less than about 300 kg/m3. 8. A fiber optic cable according to claim 1, wherein said water-swellable element possesses an uncompressed density of less than about 100 kg/m3. 9. A fiber optic cable, comprising: an optical fiber bundle including a plurality of optical fibers; a buffer tube enclosing said optical fiber bundle; a water-swellable tape comprising water-swellable polymeric fibers, wherein said water-swellable tape (i) is positioned between said optical fiber and said buffer tube, (ii) substantially surrounds said optical fiber bundle, and (iii) is substantially free of a superabsorbent-powder coating; and a plurality of discrete domains of adhesive material adhesively coupling said water-swellable tape and said optical fiber bundle. 10. A fiber optic cable according to claim 9, wherein said plurality of discrete domains of adhesive material adhesively coupling said water-swellable tape and said optical fiber bundle provides the predominant coupling force between said water-swellable tape and said optical fiber bundle. 11. A fiber optic cable according to claim 9, wherein said plurality of discrete domains of adhesive material adhesively coupling said water-swellable tape and said optical fiber bundle comprises discrete domains of adhesive foam that are provided on said optical fiber bundle. 12. A fiber optic cable according to claim 9, wherein said plurality of discrete domains of adhesive material adhesively coupling said water-swellable tape and said optical fiber bundle comprises discrete domains of adhesive foam that are provided on said water-swellable tape. 13. A fiber optic cable according to claim 9, wherein said plurality of discrete domains of adhesive material adhesively coupling said water-swellable tape and said optical fiber bundle comprises discrete domains of adhesive foam (i) having an average diameter of less than about one millimeter and (ii) being spaced from one another by at least about one millimeter. 14. A fiber optic cable according to claim 9, wherein said optical fiber bundle comprises a ribbon stack. 15. A fiber optic cable according to claim 9, wherein said optical fiber bundle comprises two or more optical fibers that are helically wound around each other. 16. A fiber optic cable according to claim 9, wherein said water-swellable tape comprises a nonwoven fabric tape, said nonwoven fabric tape comprising (i) superabsorbent polymer fibers and (ii) at least one other kind of fiber. 17. A fiber optic cable according to claim 9, wherein said water-swellable tape comprises a nonwoven fabric tape, said nonwoven fabric tape comprising at least two kinds of water-swellable fibers. 18. A fiber optic cable according to claim 9, wherein said water-swellable tape possesses a substantially uniform thickness and a substantially smooth surface. 19. A fiber optic cable according to claim 9, wherein said water-swellable tape is a nonwoven fabric tape that is substantially free of water-swellable particulates. 20. A fiber optic cable according to claim 9, wherein said water-swellable tape possesses an uncompressed density of less than about 200 kg/m3. 21. A fiber optic cable according to claim 9, wherein said water-swellable tape possesses an uncompressed density of less than about 100 kg/m3. 22. A method of making a dry fiber optic cable, comprising: providing a ribbon stack of optical fibers; providing a water-swellable tape that is substantially free of superabsorbent particulates; applying discrete domains of adhesive foam to the ribbon stack of optical fibers and/or the water-swellable tape to provide adhesive coupling between the ribbon stack of optical fibers and the water-swellable tape; substantially enclosing the ribbon stack of optical fibers within the water-swellable tape, whereby the discrete domains of adhesive foam adhesively couple the ribbon stack of optical fibers and the water-swellable tape; and forming a polymeric tube or jacket around both the ribbon stack of optical fibers and the water-swellable tape. 23. A method according to claim 22, wherein the step of providing a water-swellable tape that is substantially free of superabsorbent particulates comprises providing a nonwoven fabric that (i) includes water-swellable polymeric fibers and (ii) possesses a compressibility of between about one percent and 90 percent under a load of 1.0 gram per square centimeter. 24. A method according to claim 22, wherein the step of providing a water-swellable tape that is substantially free of superabsorbent particulates comprises providing a water-swellable tape possessing an uncompressed density of less than about 100 kg/m3. 25. A method according to claim 22, wherein the step of applying discrete domains of adhesive foam to the ribbon stack of optical fibers and/or the water-swellable tape comprises applying discrete domains of adhesive foam (i) having an average diameter of less than about one millimeter and (ii) being spaced from one another by at least about one millimeter.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.