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Title:
TIRE
Document Type and Number:
WIPO Patent Application WO/2017/175475
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a tire that is lightweight and has outstanding riding comfort while suppressing increases in cost. In the present invention, a plurality of belt layers 7 are layered in the radial direction. Each of the belt layers 7 comprises a plurality of steel cords 10, disposed in parallel in a single line, and rubber 11. Each of the steel cords 10 has a one-by-four structure in which four filaments 20 are twisted together, and if the distance between the centers of the steel cords 10 in at least two belt layers 7 that are radially adjacent is T and the average diameter of virtual circumscribed circles of the one-by-four structure steel cords 10 is D, 1.25≤T/D≤2.25.

Inventors:
MATSUOKA AKIFUMI (JP)
SAITO KAZUHIKO (JP)
TAKAMURA SHINEI (JP)
SUZUKI MASUMI (JP)
FUJISAWA KOJI (JP)
Application Number:
PCT/JP2017/004674
Publication Date:
October 12, 2017
Filing Date:
February 09, 2017
Export Citation:
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Assignee:
SUMITOMO ELECTRIC TOCHIGI CO LTD (JP)
SUMITOMO (SEI) STEEL WIRE CORP (JP)
SUMITOMO RUBBER IND (JP)
International Classes:
B60C9/20; B60C9/00; D07B1/06
Domestic Patent References:
WO2014203908A12014-12-24
Foreign References:
JPH11192810A1999-07-21
JPH10297213A1998-11-10
JP2013199193A2013-10-03
JPH05140881A1993-06-08
JP2004216977A2004-08-05
JPH0747806A1995-02-21
JPH11241282A1999-09-07
JPH10259582A1998-09-29
JPH06166970A1994-06-14
JP2001328406A2001-11-27
JPS5222202A1977-02-19
JPH0399904A1991-04-25
JPH0374206A1991-03-28
Other References:
See also references of EP 3441238A4
Attorney, Agent or Firm:
SHIN-EI PATENT FIRM, P.C. (JP)
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