| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a nipple joint that does not crack even if pipes make expansion or contraction movement. <P>SOLUTION: The nipple joint 1 comprises a nipple 3 comprised by plurally providing annular protruding parts 15, 15A pressed against a pipe end 5 inner circumference face in an axial direction on an outer circumference face of a cylindrical part 14 inserted into a pipe end 5, and a clamping means 4 for pressurizing and clamping the pipe end 5 inserted with the nipple 3 from the outside. A top part of the first annular protruding part 15A positioned on an inserting direction tip of the nipple cylindrical part 14 is composed of a cylindrical curved surface 16 of a predetermined length substantially in parallel with an axis, and an end 13 in a tip side of the clamping means 4 is set in a position facing the cylindrical curved surface 16. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
