Resilient tires and wheels – Tires – resilient – Anti-skid devices
Patent
1994-06-16
1995-12-05
Ball, Michael W.
Resilient tires and wheels
Tires, resilient
Anti-skid devices
B60C 1104, B60C 11117
Patent
active
054720303
ABSTRACT:
A pneumatic tire, which comprises a tread portion provided with a circumferential groove having a pair of side walls, in the axial direction of the tire the circumferential groove is disposed within the ground contacting width of the tread under a standard loaded state, the standard loaded state is such that the tire is mounted on its regular rim and inflated to 70% of its maximum air pressure and then loaded with 88% of its maximum load, the axial width of the circumferential groove is in the range of from 0.2 to 0.35 times the ground contacting width, and at least one of the side walls has a nonrectilinear configuration having a plurality of axially deviated parts, whereby the conditions of the resonance of the air in the circumferential groove are continously changed every moment during running to decrease air resonance noise thereby effectively reducing the tire noise.
REFERENCES:
patent: 4726407 (1988-02-01), Hayakawa et al.
patent: 4736782 (1988-04-01), Kanamaru
patent: 4785863 (1988-11-01), Tsuda et al.
Shibata Kouji
Uemura Yoshiaki
Ball Michael W.
Lorin Francis J.
Sumitomo Rubber Industries Ltd.
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