Title:
SLEEVE FOR DUCT INSERTION OF FIRE RESISTIVE COVERING STEEL FRAME MEMBER
Document Type and Number:
Japanese Patent JP3717991
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a sleeve for duct insertion capable of facilitating installation work to a steel frame member and certainly preventing separation of a fire resistive covering layer.
SOLUTION: A sleeve 20 for duct insertion is installed on a steel frame member so as to uniform thickness of a fire resistive covering layer 8 in the circumference of a through hole 12 through which a duct 10 passes. This sleeve 20 for duct insertion is furnished with a sleeve main body 24 through which the duct 10 passes and a plural number of spacers 26 fixed in the peripheral direction of an outer periphery of this sleeve main body 24 with specified intervals and to hold the sleeve main body 24 in the through hole 12 by engagement with an edge part of the through hole 12. Additionally, a pair of clicks 32a, 32b to sandwich both side surfaces near the through hole 12 are formed on a head end part of a support plate part of the spacers 26.
Inventors:
Kazuhito Ozawa
Application Number:
JP5190796A
Publication Date:
November 16, 2005
Filing Date:
March 08, 1996
Export Citation:
Assignee:
Taisei Corporation
International Classes:
E04B1/94; E04C3/08; E04F17/08; (IPC1-7): E04B1/94; E04C3/08; E04F17/08
Domestic Patent References:
| JP6049922A | ||||
| JP9111913A | ||||
| JP60164554A | ||||
| JP3108707U | ||||
| JP3108705U |
Attorney, Agent or Firm:
Tetsuya Mori
Yoshiaki Naito
Cui Shu Tetsu
Yoshiaki Naito
Cui Shu Tetsu