Resilient tires and wheels – Tires – resilient – Anti-skid devices
Patent
1997-07-18
1999-12-14
Maki, Steven D.
Resilient tires and wheels
Tires, resilient
Anti-skid devices
15220926, 152902, 152DIG1, B60C 1111, B60C 1113
Patent
active
060004517
ABSTRACT:
A pneumatic tire having a block type tread pattern improved in stone trapping, which comprises the tread portion provided with a mesh of grooves to define blocks, each block surrounded by at least one projection standing out from the groove bottom leaving spaces from the groove walls, the projection comprising alternate wide main portions and narrow coupler portions, the height of the wide main portions being in the range of from 10 to 25% of the groove depth, the height of the narrow coupler portions being not less than 5% but less than 10% of the groove depth, the length of each of the wide main portions being in the range of from 3 mm to 10 mm, the length of each of the narrow coupler portions being in the range of from 2 mm to 5 mm, and the width of the narrow coupler portions being in the range of from 1 mm to 2 mm.
REFERENCES:
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patent: 4345632 (1982-08-01), Takigawa et al.
patent: 4945966 (1990-08-01), Ogawa
patent: 5024260 (1991-06-01), Ochiai
patent: 5160385 (1992-11-01), Goto et al.
patent: 5180453 (1993-01-01), Fukasawa et al.
patent: 5361815 (1994-11-01), Loser et al.
patent: 5417269 (1995-05-01), Kinoshita et al.
Maki Steven D.
Sumitomo Rubber Industries Ltd.
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