Title:
THROUGH HOLE FORMING TOOL FOR FIRE RESISTANT STRUCTURE
Document Type and Number:
Japanese Patent JP3966772
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To advantageously perform fire resistant structure work for a through hole in terms of cost and efficiency by rationally remodeling a sleeve embedded for forming the through hole for a pipe in a pipe-expected position of a concrete structure.
SOLUTION: The sleeve 3 is embedded for forming the through hole 2 for the pipe in the pipe-expected position of the concrete structure 1, and is manufactured from a thermally expansive heat resistant resin for substantially blocking up the pipe-inserted through hole 2 by the thermal expansion. The sleeve 3 forms a blocking-up part 3A for blocking up or almost blocking up clearance S formed between an inner peripheral surface and an outer peripheral surface of the pipe in a pipe axis X directional specific position by contacting with or approaching the outer peripheral surface of the pipe P inserted into the through hole 2.
Inventors:
Koji Kaneda
Application Number:
JP2002183056A
Publication Date:
August 29, 2007
Filing Date:
June 24, 2002
Export Citation:
Assignee:
Inaba Electric Industry Co., Ltd.
International Classes:
E04B1/94; E04G15/06; E04F17/08; F16L5/02; F16L5/04; (IPC1-7): E04G15/06; E04B1/94; E04F17/08; F16L5/02; F16L5/04
Domestic Patent References:
| JP11019242A | ||||
| JP11226142A | ||||
| JP47015437U | ||||
| JP62111066A | ||||
| JP11193887A | ||||
| JP9158476A |
Attorney, Agent or Firm:
Shuichiro Kitamura
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