Resilient tires and wheels – Tires – resilient – Anti-skid devices
Patent
1997-07-23
2000-09-12
Maki, Steven D.
Resilient tires and wheels
Tires, resilient
Anti-skid devices
152DIG3, 152902, B60C 1111, B60C 1112, B60C 1113, B60C10700
Patent
active
061163104
ABSTRACT:
A pneumatic tire capable of obtaining a high tire performance on ice without decreasing the other performances can be provided. A plurality of narrow grooves each having a rectangular cross section are formed on one sipe side wall surface of a sipe in an inclined manner at a certain angle. Even when the sipe is closed under a load application to the tire, portions having the narrow grooves are not brought into contact with the other sipe side wall surface of the sipe so that water on an ice road surface can be absorbed and removed by the narrow grooves. Further, in the case of the narrow groove in which one end is opened to a road contact surface portion and the other end is opened to a side surface, the absorbed water can be continuously discharged to an outside of a block in serial order so that the water on the ice road surface can be further removed. Since the water removal can be performed without a great number of sipes, a decrease of a block rigidity due to employing a great number of sipes does not occur.
REFERENCES:
patent: 4723584 (1988-02-01), Yamaguchi et al.
patent: 5176765 (1993-01-01), Yamaguchi et al.
patent: 5385189 (1995-01-01), Aoki et al.
Translation for Japan 62-241712.
Translation for Japan 2-310108.
Bridgestone Corporation
Maki Steven D.
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