| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily fit each pipe duct, in a duct joint which is used when communicatively connecting the two pipe ducts astride two mutually-intersecting attached surface. <P>SOLUTION: A substantially polygon cross sectional cylindrical joint body 5 has an attached surface 51 in contact with a finished surface 2a of a ceiling 2, an opposed surface along a finished surface of a wall 3, a first connection outlet 53 fit with the first pipe duct 20 connected thereto, and a second connection outlet 54 fit with the second pipe duct 30 and connected thereto. The first connection outlet 53 is spaced apart from the finished surface of the wall 3 by having a first step on the opposed surface. The second connection outlet 54 is spaced apart from the finished surface 2a of the ceiling 2 by having a second step 51a on the attached surface 51. <P>COPYRIGHT: (C)2013,JPO&INPIT |
