Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,...
Patent
1991-09-25
1993-03-02
Reese, Randolph A.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
174 37, 174 65R, 220 38, 285129, 285161, 285208, H02G 318
Patent
active
051904080
ABSTRACT:
Underground cables are laid in a concrete box which is to be buried in the ground. According to the present invention, an adapter is formed with a hole, and a bushing is mounted on the adapter through the hole. Subsequently, a cable duct is fitted into the bushing, and the resultant adapter is attached to the concrete box so as to conceal an opening provided in the concrete box beforehand.
REFERENCES:
patent: 525670 (1894-09-01), Segade et al.
patent: 1857197 (1932-05-01), Knoderer
patent: 2950837 (1960-08-01), Christensen et al.
patent: 3181899 (1965-05-01), McKnight
patent: 4151363 (1979-04-01), Nichols
patent: 4224464 (1980-09-01), Bunnell et al.
Kawanabe Masakazu
Ozeki Shotaro
Olsen Arlen L.
Reese Randolph A.
Saito Denki Sangyo Co., Ltd.
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