Title:
STEEL CORD AND ELASTIC TRACK USING SAME
Document Type and Number:
WIPO Patent Application WO/2014/129300
Kind Code:
A1
Abstract:
A steel cord is configured so that, when the steel cord is used as a tensile cord for an elastic track, a core dislocation and the early breakage of the wires of a core are prevented.
A steel cord comprises: a core which comprises a single core strand; and a sheath which is formed by twisting together six sheath strands arranged around the core. The core strand has a layer twisted structure comprising: a core portion which is formed by twisting three core wires together; and an outer layer portion which is formed by twisting together eight to nine core wires arranged around the core portion. The sheath strands each have either a bundle twisted structure which is formed by twisting 12 to 19 sheath wires or a multi-layer twisted structure which is formed by twisting 12 to 19 sheath wires in layers. The diameter (dc) of the core wires is greater than the diameter (ds) of the sheath wires. The average gap (Gc) between the core wires of the outer layer portion is 0.015 mm or greater, and the average gap (Gs) between the sheath strands is 0.1 mm or greater.
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Inventors:
NISHIMURA AKIHIRO (JP)
YOSHIDA SATOSHI (JP)
YOSHIDA SATOSHI (JP)
Application Number:
PCT/JP2014/052442
Publication Date:
August 28, 2014
Filing Date:
February 03, 2014
Export Citation:
Assignee:
SUMITOMO RUBBER IND (JP)
TOKUSEN CO LTD (JP)
TOKUSEN CO LTD (JP)
International Classes:
D07B1/06
Foreign References:
| US20130032264A1 | 2013-02-07 | |||
| JP2009242983A | 2009-10-22 | |||
| JP2009052177A | 2009-03-12 | |||
| JP2001020188A | 2001-01-23 | |||
| JPH0421224B2 | 1992-04-09 |
Other References:
See also references of EP 2952627A4
Attorney, Agent or Firm:
SUMITOMO Shintaro (JP)
Shintaro Sumitomo (JP)
Shintaro Sumitomo (JP)
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