Title:
COMPOSITE TUBE
Document Type and Number:
WIPO Patent Application WO/2018/123780
Kind Code:
A1
Abstract:
A composite tube having: a tubular tube body that is formed from a resin material; a covering layer that is tubular, covers an outer circumference of the tube body, can contract in the axial direction while being guided by the outer circumference of the tube body, is formed from a resin material, and is a bellows shape in which annular peak sections and annular valley sections are alternately formed in an axial direction of the tube body, said peak sections protruding toward a radially outward side and said valley sections being recesses on the radially outward side; and a porous urethane layer that is positioned between the tube body and the covering layer, is clamped between the valley sections and the tube body, has a density of 12kg/m3 or greater and 22kg/m3 or less, and has a hysteresis loss of 42% or greater.
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Inventors:
MITSUHASHI KOHEI (JP)
Application Number:
PCT/JP2017/045834
Publication Date:
July 05, 2018
Filing Date:
December 20, 2017
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
B32B1/08; F16L11/11; B32B3/30; B32B5/18; B32B27/40
Domestic Patent References:
| WO2004039574A2 | 2004-05-13 | |||
| WO2017213007A1 | 2017-12-14 |
Foreign References:
| JP2004322583A | 2004-11-18 | |||
| JPS62290713A | 1987-12-17 | |||
| JP2002106759A | 2002-04-10 | |||
| JPH11503217A | 1999-03-23 | |||
| DE4128654A1 | 1993-03-04 | |||
| JP2004044780A | 2004-02-12 | |||
| JPS61235416A | 1986-10-20 | |||
| JPH08239500A | 1996-09-17 | |||
| JP2008013699A | 2008-01-24 | |||
| JP2015048909A | 2015-03-16 | |||
| JP2016251952A | 2016-12-26 |
Other References:
See also references of EP 3561356A4
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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