发明名称 |
Pneumatic tire variable elasticity modules metallic band cord |
摘要 |
A pneumatic tire comprises a carcass extending between the bead portions and a band disposed radially outside the carcass in a tread portion and made of at least one cord laid at an angle of not more than 5 degrees with respect to the tire equator, and the band cord is made of steel filaments twisted together so as to have a variable elasticity modulus which has a transitional point from under 1000 kgf/sq.mm to over 1000 kgf/sq.mm at an elongation percentage in a range of from 1% to 5%. Preferably, the average elasticity modulus ELn of the cord from zero elongation to the transitional point is in a range of from 500 to 750 kgf/sq.mm, and the average elasticity modulus EHn of the cord from the transitional point to a breaking point of the cord is in a range of from 1200 to 3000 kgf/sq.mm. |
申请公布号 |
US6926053(B2) |
申请公布日期 |
2005.08.09 |
申请号 |
US20020183514 |
申请日期 |
2002.06.28 |
申请人 |
SUMITOMO RUBBER INDUSTRIES, LTD. |
发明人 |
MIYAZAKI SHINICHI;YAMAZAKI KAZUMI;TODA OSAMU |
分类号 |
D07B1/06;B60C9/00;B60C9/20;B60C9/22;(IPC1-7):B60C9/22 |
主分类号 |
D07B1/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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