Title:
THROUGH-HOLE COVER, AND FIRE PROTECTION CONSTRUCTION OF COMPARTMENT THROUGH-HOLE
Document Type and Number:
Japanese Patent JP2016223190
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a through-hole cover capable of easily performing fireproof treatment of a compartment through-hole.SOLUTION: A through-hole cover 1 is inserted into a through-hole 12 of a compartment body 11 and includes a main body 2 and fin parts 4a,4b. The main body 2 has a cylindrical shape and a wiring or piping is inserted thereto. The fin parts 4a,4b are provided inside of the main body 2 at one end or the other end in the longitudinal direction of the main body 2. The fin parts 4a,4b are formed from a plurality of projection pieces 6 arranged in the circumferential direction of the inner peripheral surface of the main body 2. The plurality of projection pieces 6 project to a radial inner side from the inner peripheral surface of the main body 2. The periphery of a wiring or piping is surrounded by tips of the plurality of projection pieces 6. The main body 2 and the plurality of the projection pieces 6 forming the fin parts 4a,4b have thermal expansion property.SELECTED DRAWING: Figure 1
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Inventors:
MAKITA YASUKAZU
NAKAJIMA HIDEYASU
NAKAJIMA HIDEYASU
Application Number:
JP2015111466A
Publication Date:
December 28, 2016
Filing Date:
June 01, 2015
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD
International Classes:
E04B1/94; F16L5/02; F16L5/04; H02G3/22
Domestic Patent References:
| JP2008241027A | 2008-10-09 | |||
| JP2009142487A | 2009-07-02 | |||
| JP2004313393A | 2004-11-11 | |||
| JP2005226725A | 2005-08-25 | |||
| JP2014007892A | 2014-01-16 | |||
| JPH11103887A | 1999-04-20 |
Foreign References:
| US6176052B1 | 2001-01-23 |
Attorney, Agent or Firm:
Patent Business Corporation Saegusa International Patent Office