초록 ▼

Various embodiments of an umbilical are provided. In one aspect, an umbilical is provided that includes a first tube, a second tube positioned in the first tube and a plurality of third tubes positioned in the first tube. Each of the plurality of third tubes has an inner polymer sleeve and an outer

Various embodiments of an umbilical are provided. In one aspect, an umbilical is provided that includes a first tube, a second tube positioned in the first tube and a plurality of third tubes positioned in the first tube. Each of the plurality of third tubes has an inner polymer sleeve and an outer sleeve of carbon fibers in an epoxy matrix positioned around the polymer sleeve. The composite tubes yield a lighter umbilical that is easier to handle than a comparably sized conventional umbilical incorporating steel inner tubing and is more tolerant of dynamic bending and hydrostatic pressure loading.

대표청구항 ▼

Various embodiments of an umbilical are provided. In one aspect, an umbilical is provided that includes a first tube, a second tube positioned in the first tube and a plurality of third tubes positioned in the first tube. Each of the plurality of third tubes has an inner polymer sleeve and an outer

Various embodiments of an umbilical are provided. In one aspect, an umbilical is provided that includes a first tube, a second tube positioned in the first tube and a plurality of third tubes positioned in the first tube. Each of the plurality of third tubes has an inner polymer sleeve and an outer sleeve of carbon fibers in an epoxy matrix positioned around the polymer sleeve. The composite tubes yield a lighter umbilical that is easier to handle than a comparably sized conventional umbilical incorporating steel inner tubing and is more tolerant of dynamic bending and hydrostatic pressure loading. lications", in Laboratory Diagnosis of Viral Infections, Lennette, E., ed., Marcel Dekker, Inc., New York, pp. 211-219.* Hofbauer et al., 1988, J. Clin. Microbiol. 26:116-120.* Baker et al., 1984, Proc. Natl. Acad. Sci. USA 81:6779-6783.* Guyader, M. Et Al., "Genome organization and transactivation of the human immunodeficiency virus type 2" vol. 326, No. 6114, Apr. 16, 1987, London GB, p.p. 662-669. Kelley, K.A., et al., "Synthesis of fusion and mature murine alpha interferons in Escherichia coli" vol. 45, No. 3, 1986 Amsterdam NL, p.p. 317-325. Srinivasan et al., 1987, Gene 52:71-82.* Yourno et al., 1988, AIDS Res. Human Retrovir. 4:165-173.* Gouy et al., 1982, Nuc. Acids Res. 10:7055-7074.* Desai, Et Al., "Molecular Cloning and Primary Nucleotide . . . " PNAS, 83: 8380-8384. Weiss, Et Al., 1986, "Varialle and Conserved . . . " Nature, 324: 572-575. Alizon Et Al.,1986, "Genetic Variability of the AIDS . . . "Cell 46:63-74. Ratner Et Al., 1985, "Complete Nucleotide Sequence of the AIDS . . . " Nature, vol. 313:277-284. Chang Et Al., 1985, "Expression in E coli of Open Reading Frame Gene Segmends . . . " Science, 228:93-96. Baker Et Al., 1984, A Gene Regulating the Heat Shock Response . . . USA, 81:6779-6783. Goldman Et Al., 1986, "Primary Sequence of . . . ", Journal of Biological Chemistry, vol. 261(34):15831-15835. J. Yourno et al., AIDS Research and Human Retroviruses, vol. 4, No. 3, pp. 165-174 (1988). A. Srinivasan et al., Gene, vol. 52, pp. 71-82 (1987). M. Gouy et al., Nucleic Acids Research, vol. 10, No. 22, pp. 7055-7074 (1982). Geysen, et al., Journal of Immunological Methods, 102 (1987) 259-272. Hopp and Woods, Proc. Natl. Acad. Science, vol. 78, No. 6, pp 3824-3828 (1984). Science vol. 228, p. 740-742 (1985).