| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To simplify structure and assembling to reduce a manufacturing cost and an installation cost, and to close a through-hole under an insertion condition as it is, even in any insertion position of a long body into the through-hole. <P>SOLUTION: This tool is provided with a hole lid body 2 formed of a disc- like refractory material capable of storing the long body C via a guide cut-in 2a through an outer circumferential edge, corresponding to the long body C inserted into the through-hole 1 of a fire-protection partition body B, to close the through-hole under the condition where an outside of the long body C is covered via a fire-resistant falling-preventive auxiliary means E, and a press metal 4 formed split-ring-likely and formed with a positioning protrusion 4A penetrated through the hole lid body 2 to abut to or come closer to the vicinity of an inner circumferential face of the through-hole 1. <P>COPYRIGHT: (C)2004,JPO</p> |
