Pipes and tubular conduits – Plural duct – Longitudinally extending common wall
Patent
1990-03-23
1991-08-06
Cuchlinski, Jr., William A.
Pipes and tubular conduits
Plural duct
Longitudinally extending common wall
138111, 138117, 138166, 174 95, 285188, F16L 918, F16L 1100
Patent
active
050368915
ABSTRACT:
A conduit assembly for cabling has a multiplicity of plastic tubes with outer polygonal cross sections having more than three sides and is intended for direct insertion in the ground in a compact bundle in which there is practically no free space which can serve for water drainage. The tubes are connected with webs which are flexible and are so oriented that they are linearly aligned in an open array of the tubes so that the tubes are coplanar and can be coiled or coiled onto a drum or uncoiled from a drum.
REFERENCES:
patent: 3693664 (1972-09-01), Schmunk
patent: 4729409 (1988-03-01), Paul
patent: 4804020 (1989-02-01), Bartholomew
Cuchlinski Jr. William A.
Dipl.-Ing. Dr. Ernst Vogelsang GmbH & Co. KG
Dubno Herbert
Nguyen Vinh
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