Water blocked shielded coaxial cable

Details Water blocked shielded coaxial cable Water blocked shielded coaxial cable

1996-12-23

1999-09-07

Sough, Hyung-Sub

Electricity: conductors and insulators

With fluids or vacuum

With fluid stops

174106R, 174121A, H01B 728

Patent

active

059490187

ABSTRACT:
The present invention provides a fully water blocked coaxial cable. In one preferred embodiment, the cable includes at least one metallic inner conductor and a dielectric material surrounding the inner conductor or conductors. A first metallic shield tape surrounds the dielectric material and the conductor or conductors. A first braided metallic shield surrounds the first metallic shield tape, and a second metallic shield tape surrounds the first braided shield. A water swellable flooding material is disposed between the first and second metallic shield tapes. A second braided metallic shield surrounds the second metallic shield tape, and a jacket surrounds the second braided metallic shield. In one preferred form of the invention, the water swellable flooding material includes at least one water swellable strand disposed between the first and second metallic shield tapes. More particularly, the water swellable strand may include a yarn having a coating of a water swellable hydrophilic material.

REFERENCES:
patent: 3340353 (1967-09-01), Mildner
patent: 3588317 (1971-06-01), Hutchins, Jr.
patent: 3643007 (1972-02-01), Roberts et al.
patent: 5133034 (1992-07-01), Arroyo et al.
patent: 5481635 (1996-01-01), Arroyo et al.
patent: 5486648 (1996-01-01), Chan et al.
patent: 5796042 (1998-08-01), Pope
Announcement from Belden entitled Composite Braid: Metallic Wire and Water Expandable Yarn (Patent Pending), California Cable Association 1996 Western Show, Dec. 11-13, 1996 (trade show).

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