Longitudinally water-tight cables

Details Longitudinally water-tight cables Longitudinally water-tight cables

1981-03-24

1983-06-14

Kendell, Lorraine T.

Electricity: conductors and insulators

With fluids or vacuum

With fluid stops

350 9623, 428376, 428383, 428384, 428389, 428398, B32B 900, B32B 1500, G02B 516, H02G 1520

Patent

active

043884857

ABSTRACT:
Longitudinally water-tight cables, such as communication cables, are produced so that the interior of such cables have a filling material containing a water-repellant substance and relatively small diameter gas bubbles embedded in the filling material. The filling material is thickened with a reticulating thixotropic substance having a 3-dimensional network-like structure which is disruptable under mechanical influence and is regenerable over a time span in a motionless state with a significant increase of viscosity. The size of the gas bubbles are adjusted relative to the resistance to disruption of the network-like structure so that the buoyancy of such gas bubbles is significantly below such resistance to disruption in the motionless state of the filling material whereby such gas bubbles are maintained in their respective positions within the filling material in a time-stable manner during a motionless state.

REFERENCES:
patent: 1524124 (1925-01-01), Fisher et al.
patent: 3347974 (1967-10-01), Arendt et al.
patent: 3576388 (1971-04-01), Bruns
patent: 3803339 (1974-04-01), Speckman
patent: 3875323 (1975-04-01), Bopp et al.
patent: 3893961 (1975-07-01), Walton et al.
patent: 3961128 (1976-06-01), Beach
patent: 4110137 (1978-08-01), Beach

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