公开(公告)号：US3508594A

公开(公告)日：1970-04-28

申请号：US3508594D

申请日：1967-08-24

申请人： DUNLOP CO LTD

发明人： FRENCH TOM

IPC分类号： B60C5/12 ,  B60C5/20 ,  B60C11/01 ,  B60C11/12 ,  B60C17/02 ,  B60C23/16 ,  B60C13/00 ,  B60C11/00

CPC分类号： B60C11/0306 ,  B60C11/04 ,  Y10T152/10594

公开(公告)号：US3578055A

公开(公告)日：1971-05-11

申请号：US3578055D

申请日：1968-10-11

申请人： DUNLOP CO LTD

发明人： FRENCH TOM ,  GOUGH VERNON E

IPC分类号： B60C11/24 ,  B60C11/00

CPC分类号： B60C11/24 ,  Y10T152/10027

摘要： A pneumatic tire having a recess formed in the tread rubber thereof by cutting or moulding a recess shoulder portion formed in the rubber bounding the recess, and a tread wear marker located in the recess having at least a part thereof located radially inwardly of the said shoulder portion and secured in position thereby, the marker comprising, at least in part, material which may be distinguished either visually or audibly upon rotation of the tire on a hard surface for indicating a degree of tread wear which has occurred in the rubber adjacent the marker.

公开(公告)号：US3482616A

公开(公告)日：1969-12-09

申请号：US3482616D

申请日：1967-07-11

申请人： DUNLOP CO LTD

发明人： FRENCH TOM

IPC分类号： F41A9/61 ,  B60C11/01 ,  B60C11/04 ,  B60C13/02 ,  F41A9/65 ,  F41A9/71 ,  B60C11/08

CPC分类号： B60C13/02 ,  B60C11/01 ,  B60C2011/013