Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2011/046195
Kind Code:
A1
Abstract:
Disclosed is a pneumatic tire which includes a reinforcing layer containing steel cords of the 1×2 structure, each steel cord being composed of two wires twisted together, the steel cords having a carbon content of 0.60-0.75%, a strength in the tire of 2,900-3,500 MPa, and a twisting angle of 1.5-3.0º. The manufacturability of the steel cords to be used in the reinforcing layer of this tire can hence be improved while maintaining the fatigue resistance thereof. Furthermore, by regulating the degree of shaping of the steel cords of this tire to 95-105% in terms of average value and to 5-20% in terms of standard deviation σ, the fatigue resistance of the steel cords can be further improved and the durability of the tire can be improved accordingly.
Inventors:
UEDA YOSHIO (JP)
Application Number:
PCT/JP2010/068120
Publication Date:
April 21, 2011
Filing Date:
October 15, 2010
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
UEDA YOSHIO (JP)
UEDA YOSHIO (JP)
International Classes:
B60C9/20; B60C9/00; B60C13/00; B60C15/06; D07B1/06
Foreign References:
| JP2009234332A | 2009-10-15 | |||
| JPH09132885A | 1997-05-20 | |||
| JPH05230780A | 1993-09-07 | |||
| JPH0399904A | 1991-04-25 | |||
| JPH04281081A | 1992-10-06 | |||
| JPH0450389A | 1992-02-19 | |||
| JP2000178887A | 2000-06-27 | |||
| JPH0719393U | 1995-04-07 | |||
| JPH05147404A | 1993-06-15 | |||
| JPH08325964A | 1996-12-10 |
Attorney, Agent or Firm:
WATANABE Mochitoshi et al. (JP)
Mochitoshi Watanabe (JP)
Mochitoshi Watanabe (JP)
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