Title:
DRAIN PIPE JOINT
Document Type and Number:
Japanese Patent JP2017014762
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To facilitate achievement of both noise reduction while suppressing an increase in weight and prevention of spreading of a flame and smoke to adjacent floors at a time of fire through a drain pipe joint, for the drain pipe joint arranged to penetrate through a floor slab of a building.SOLUTION: A drain pipe joint 11 includes a joint body 21 to which a drain pipe 85 is connected, and a first covering material 51 covering an outer surface of a portion of the joint body 21 penetrating through a floor slab CS. The joint body 21 is made of a thermoplastic resin. The first covering material 51 integrally includes, in the following order from an inner side: a first sound absorption layer 53 made of a sponge material; a second sound absorption layer 55 made of an assembly of inorganic fibers; and a waterproof and sound insulating skin layer 57. The first covering material further includes a thermal expansion material 61 provided on at least one location in an axial direction along a circumference.SELECTED DRAWING: Figure 2
Inventors:
KOJIMA SEIZO
IWATSUKI TAKESHI
KAKO YOZO
IWATSUKI TAKESHI
KAKO YOZO
Application Number:
JP2015130810A
Publication Date:
January 19, 2017
Filing Date:
June 30, 2015
Export Citation:
Assignee:
KOJIMA SEISAKUSHO:KK
International Classes:
E03C1/12; F16L5/00; F16L5/02; F16L55/02
Domestic Patent References:
| JP2011094642A | 2011-05-12 | |||
| JP2006090538A | 2006-04-06 | |||
| JPH06300178A | 1994-10-28 | |||
| JP2013002479A | 2013-01-07 | |||
| JP2012077478A | 2012-04-19 | |||
| JP2011208474A | 2011-10-20 | |||
| JP2007056537A | 2007-03-08 |
Attorney, Agent or Firm:
Okada International Patent Office