发明授权
US5538572A Method of making a pneumatic radial tire having inner carcass ply cord
tension smaller than outer carcass ply cord tension
失效
制造充气子午线轮胎的方法，其具有小于外部胎体帘布层帘线张力的内部胎体帘布层帘线张力
- 专利标题： Method of making a pneumatic radial tire having inner carcass ply cord tension smaller than outer carcass ply cord tension
- 专利标题（中）： 制造充气子午线轮胎的方法，其具有小于外部胎体帘布层帘线张力的内部胎体帘布层帘线张力
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申请号： US465013申请日： 1995-06-05
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公开(公告)号： US5538572A公开(公告)日： 1996-07-23
- 发明人: Masayuki Sakamoto , Toshihiko Omokawa , Masahiro Hanya
- 申请人： Masayuki Sakamoto , Toshihiko Omokawa , Masahiro Hanya
- 申请人地址： JPX Hyogo-ken
- 专利权人： Sumitomo Rubber Industries, Ltd.
- 当前专利权人： Sumitomo Rubber Industries, Ltd.
- 当前专利权人地址： JPX Hyogo-ken
- 优先权： JPX6-152601 19940610; JPX7-087403 19950320
- 主分类号： B60C9/02
- IPC分类号： B60C9/02 ; B29D30/06 ; B29D30/30 ; B60C9/04 ; B60C9/06 ; B60C9/08 ; B60C9/13 ; B29D30/38
摘要：
A pneumatic radial tire comprises a carcass comprising an outer carcass ply made of cords having a first heat-shrinkage-percentage K1 and an inner carcass ply is made of cords having a second heat-shrinkage-percentage K2 different from the first heat-shrinkage-percentage K1, and the cord tension of the inner carcass ply is smaller than the cord tension of the outer carcass ply. A method of making the tire comprises steps of making the outer carcass ply of cords having a first heat-shrinkage-percentage K1, making the inner carcass ply of cords having a second heat-shrinkage-percentage K2, wherein the first heat-shrinkage-percentage K1 at 150 degrees C. is 120 to 160% of the second heat-shrinkage-percentage K2 at 150 degrees C., and heating and vulcanizing a raw tire to heat-shrink the outer carcass ply cords in a larger degree than the inner carcass ply.
公开/授权文献
- USD322894S Garment hanger 公开/授权日：1992-01-07
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