Resilient tires and wheels – Tires – resilient – Anti-skid devices
Patent
1995-05-03
1998-01-27
Maki, Steven D.
Resilient tires and wheels
Tires, resilient
Anti-skid devices
152DIG3, B60C 1112
Patent
active
057118280
ABSTRACT:
A pneumatic tire running on snow and ice roads has a tread pattern defined in a tread portion by a pair of circumferential grooves dividing the tread portion into a central region and both side regions, a great number of slant grooves arranged in the central region at a given interval in a circumferential direction of the tire and a plurality of zigzag sipes arranged at a given interval in the circumferential direction in each of blocks defined by the circumferential grooves and the slant grooves. In this tread pattern, first slant grooves having a particular small inclination angle and second slant grooves having a particular large inclination angle with respect to the circumferential direction are arranged so that the inclinations of the first and second slant grooves are opposite to each other, and at least one end of each of the zigzag sipes arranged in the same block is opened to the circumferential groove or the first slant groove.
REFERENCES:
patent: D364134 (1995-11-01), Himuro et al.
patent: 4598747 (1986-07-01), Flechtner
patent: 4730654 (1988-03-01), Yamashita et al.
patent: 5176765 (1993-01-01), Yamaguchi et al.
patent: 5198047 (1993-03-01), Graas et al.
patent: 5301727 (1994-04-01), Inoue
patent: 5435366 (1995-07-01), Voigt et al.
patent: 5454411 (1995-10-01), Weyrich et al.
Bridgestone Corporation
Maki Steven D.
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