| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a protective pipe by which a bird damage effect is made higher, fitting works and maintenance/inspection works to an electric wire are made easy, a structure is simple, manufacture becomes easy, and cost reduction is attained. <P>SOLUTION: The protective pipe includes a hollow body of a cylindrical shape, and at least two plate type fins projected outside from a surface of the body at an isolation angle of 90°or more. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
