Pneumatic tire and manufacturing method of the same
AssigneeToyo Tire & Rubber Co., Ltd.
InventorDaiki Deguchi
Life of this patent
Estimating the term…
Abstract
A pneumatic tire has a conductive portion formed by a conductive rubber is provided in the tread rubber formed by a nonconductive rubber. The conductive portion has an outer skin portion and a projection portion. The outer skin portion is formed on a surface of the tread rubber, and extends to an inner side in a tire width direction from a side surface of the tread rubber so as to terminate at a position which goes beyond a contact end. The projection portion spirally extends from a position in an outer side than contact end so as to reach a position in an inner side in the tire width direction than the contact end, and protrudes to an inner side in a tire diametrical direction from the outer skin portion so as to terminate without reaching a bottom surface of the tread rubber.
Claims4
A pneumatic tire comprising:
- a tread rubber formed by a nonconductive rubber;
- a conductive portion formed by a conductive rubber and reaching a side surface of the tread rubber from a contact surface;
- and
- the conductive portion being provided in the tread rubber,
- wherein the conductive portion comprises:
- an outer skin portion which is formed on a surface of the tread rubber, and extends to an inner side in a tire width direction from the side surface of the tread rubber so as to terminate at a position which goes beyond a contact end;
- and
- a projection portion which spirally extends along a tire circumferential direction from a position in an outer side in the tire width direction than contact end so as to reach a position in an inner side in the tire width direction than the contact end, and protrudes to an inner side in a tire diametrical direction from the outer skin portion so as to terminate without reaching a bottom surface of the tread rubber.
Dependencies are inferred from the claim text.