Method of constructing information correspondence pipe, constructed structure, and construction member
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United States of America Patent
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Mar 11, 2008
Grant Date -
Dec 16, 2004
app pub date -
Nov 22, 2002
filing date -
Nov 22, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The object is to provide a construction method of an information-communicable underground pipe whereby communication cables can be readily laid in an underground pipeline having a main pipe and branch pipes branched therefrom thereby allowing the underground pipeline to be used as an information-communicable underground pipe, and to provide a construction structure and a construction member therefor. The construction method of an information-communicable underground pipe comprises inserting a sheath pipe (1) into an underground pipeline (17, 7) through a manhole (9, 10), the sheath pipe having a main body (3) formed with an empty room (2) for installing a communication cable (6) thereinto and a high-strength low-elongation material element (4) integrally formed in the main body (3) along the length of the main body (3), and securing the high-strength low-elongation material element (4) onto the inner wall of said manhole (9, 10) by applying tension thereon to secure the sheath pipe (1) in the substantially upper part inside the underground pipeline (17, 7).
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