| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To easily install a heating wire to an inner body to improve productivity of a fusion inner, and to prevent slack or offset of the heating wire to prevent short circuit or the like caused by contact between the heating wires. <P>SOLUTION: The fusion inner 10 is molded integrally with a back face of a saddle (102) of the branch saddle joint (100), and is provided with the inner body 12 having a through-hole 16 formed at the center thereof. A plurality of projections 18 spirally arranged around the through-hole 16 are disposed on a surface of the inner body 12. The heating wire 14 which is hooked on the projections 18 to be spirally wound is disposed on the surface of the inner body 12. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
