Resilient tires and wheels – Tires – resilient – Anti-skid devices
Patent
1997-07-02
2000-09-05
Maki, Steven D.
Resilient tires and wheels
Tires, resilient
Anti-skid devices
15220927, 152DIG3, B60C 1104, B60C 1112, B60C 1113, B60C10500
Patent
active
061127876
ABSTRACT:
A heavy duty pneumatic tire having improved resistance to uneven tread wear includes a tread portion provided with an axially outer longitudinal main groove and an axially inner longitudinal narrow groove, each extending circumferentially about the tire to define a narrow rib therebetween, the axially inner edge of the narrow rib being chamfered by a slope. In the tire meridian section, the slope is straight or concave. The axial width of the axially inner longitudinal narrow groove is in the range of from 0.5 to 2.5 mm. The axial width (W3) of the slope measured between the upper and lower edges thereof is in the range of from 0.3 to 0.8 times the axial width (W2) of the narrow rib, and the radial height (H2) of the slope measured between the upper and lower edges is in the range of from 0.3 to 0.8 times the depth (H1) of the axially inner longitudinal narrow groove.
REFERENCES:
patent: 3707177 (1972-12-01), Boileau
patent: 4550756 (1985-11-01), Hinkel
patent: 5131444 (1992-06-01), Kukimoto et al.
patent: 5323825 (1994-06-01), Yamagishi et al.
patent: 5345988 (1994-09-01), Kabe et al.
patent: 5456301 (1995-10-01), Wise
patent: 5833780 (1998-11-01), Kishi et al.
Fukumoto Tetsuhiro
Ouya Yukihide
Ueyoko Kiyoshi
Maki Steven D.
Sumito Rubber Industries, Ltd.
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