Protection conduit line for laying underground cables

Details Protection conduit line for laying underground cables Protection conduit line for laying underground cables

1977-09-27

1979-04-03

Shapiro, Jacob

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

405134, 138111, 138117, 285137R, F16L 100, E01G 500

Patent

active

041474490

ABSTRACT:
An underground conduit-forming structure made of concrete for easily forming a protection conduit line for laying underground cables, e.g., power cables, communication cables, etc. For snug coupling between the leading and trailing structures, each structure is provided with a flat bottom, a plurality of through-holes for cables, a receiving surface and a corresponding mating surface, a protuberance and a corresponding fitting hole, operation holes for the coupling operation, joint metals, and a reinforcing bar secured by welding some of these members. A seal member encompassing the through-holes keeps them water-tight when a series of structures are sequentially coupled to form the protection conduit line.

REFERENCES:
patent: 629133 (1899-07-01), Knight et al.
patent: 833870 (1906-10-01), Camp
patent: 3901038 (1975-08-01), Olsen

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