公开(公告)号：US5178704A

公开(公告)日：1993-01-12

申请号：US469467

申请日：1990-03-27

申请人： Ryoji Hanada ,  Seiichi Hirayama ,  Katsuhide Kawaguchi

发明人： Ryoji Hanada ,  Seiichi Hirayama ,  Katsuhide Kawaguchi

IPC分类号： B60C9/18 ,  B29D30/08 ,  B29D30/30 ,  B29D30/38 ,  B29D30/44 ,  B60C9/20 ,  B60C9/22

CPC分类号： B29D30/3007 ,  B29D30/38 ,  B29D30/44 ,  B60C11/0306 ,  B60C11/04 ,  B60C9/2009 ,  B60C9/22 ,  Y10T152/10783

摘要： A pneumatic radial tire including a belt reinforcing layer or layers formed by spirally continuously winding a single organic fiber cord in a manner such that before the molding of an unvulcanized tire, the belt reinforcing layer or an outer or outermost belt reinforcing layer has a greater density of winding of the organic fiber cord in its regions located beneath or inner to a main groove-forming rib of a mold than in its remaining region, whereby after the molding of the unvulcanized tire, the cord density in the regions of the belt reinforcing layer or the outer or outermost belt reinforcing layer beneath or inner to the main groove-forming rib is set to be substantially identical with the cord density in its remaining region; and a process for the production of such tire.