FREEZING FAILURE PREVENTING COMMUNICATION CABLE PIPE
PROBLEM TO BE SOLVED: To provide a freezing failure preventing communication cable pipe which is excellent in freezing failure prevention effect, allows a communication cable such as an optical fiber cable to be inserted easily and enables the freezing failure prevention function to be exchanged eas...
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| creator | IGARASHI YORIO KOIZUMI TERU YABUTA JUNJI NOMURA YASUSHI SAWADA HIROYUKI FUJIWARA KENICHI KASHIWAGI TAKUMI |
| description | PROBLEM TO BE SOLVED: To provide a freezing failure preventing communication cable pipe which is excellent in freezing failure prevention effect, allows a communication cable such as an optical fiber cable to be inserted easily and enables the freezing failure prevention function to be exchanged easily. SOLUTION: A freezing failure prevention pipe 3 is formed of a volume expansion absorption material layer 4 and flexible pipes 5 which are laminated on the inner and outer faces of the volume expansion absorption material layer 4 and whose outer and inner faces are substantially smooth. The freezing failure prevention pipe 3 is inserted into an outer pipe object 2 to obtain a freezing failure prevention communication cable pipe. When a freezing failure occurs, the freezing failure prevention pipe 3 is pulled out and a new freezing failure prevention pipe 3 is inserted for exchange. COPYRIGHT: (C)2008,JPO&INPIT |
| format | Patent |
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SOLUTION: A freezing failure prevention pipe 3 is formed of a volume expansion absorption material layer 4 and flexible pipes 5 which are laminated on the inner and outer faces of the volume expansion absorption material layer 4 and whose outer and inner faces are substantially smooth. The freezing failure prevention pipe 3 is inserted into an outer pipe object 2 to obtain a freezing failure prevention communication cable pipe. When a freezing failure occurs, the freezing failure prevention pipe 3 is pulled out and a new freezing failure prevention pipe 3 is inserted for exchange. 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SOLUTION: A freezing failure prevention pipe 3 is formed of a volume expansion absorption material layer 4 and flexible pipes 5 which are laminated on the inner and outer faces of the volume expansion absorption material layer 4 and whose outer and inner faces are substantially smooth. The freezing failure prevention pipe 3 is inserted into an outer pipe object 2 to obtain a freezing failure prevention communication cable pipe. When a freezing failure occurs, the freezing failure prevention pipe 3 is pulled out and a new freezing failure prevention pipe 3 is inserted for exchange. COPYRIGHT: (C)2008,JPO&INPIT</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINEDOPTICAL AND ELECTRIC CABLES OR LINES OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS |
| title | FREEZING FAILURE PREVENTING COMMUNICATION CABLE PIPE |
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