Resilient tires and wheels – Tires – resilient – Anti-skid devices
Patent
1993-06-04
1994-10-11
Ball, Michael W.
Resilient tires and wheels
Tires, resilient
Anti-skid devices
152454, 152534, 152548, B60C 300, B60C 902, B60C 920, B60C 1100
Patent
active
053538560
ABSTRACT:
A pneumatic radial tire formed so that, when the tire is inflated from a non-inflated state, in which the inner pressure thereof is 5% of a normal lever, to a normal inner pressure, a central region of the outer surface of the tread in a meridional cross section of the tire which is between two points P.sub.1, P.sub.1 ' spaced from the center P.sub.0 of a tread width to left and right along the outer surface of the tread by a distance L, which is expressed by the formula 0.25TW.ltoreq.L<0.50TW, with respect to a width TW of a ground contacting portion of the bread grows outward in the radial direction of the tire, shoulder regions on both outer sides of the two points P.sub.1, P.sub.1 ' contracting inward in the radial direction of the tire, with a radius of curvature R.sub.2 of a region, which is formed between two intermediate points P.sub.2, P.sub.2 ', which are positioned halfway respectively between the center P.sub.0 of the tread width and shoulder end portions on the left and right sides thereof, in such a manner that this region includes the two intermediate points P.sub.2, P.sub.2 ', varying to be smaller than a radius of curvature R.sub.1 of the same region in a non-tire-inflated state.
REFERENCES:
patent: 4258773 (1981-03-01), de Saint-Michel
patent: 4445560 (1984-05-01), Musy
patent: 4481994 (1984-11-01), Pommier
patent: 4785861 (1988-11-01), Fujiwara
patent: 4955416 (1990-09-01), Takeuchi et al.
patent: 4976300 (1990-12-01), Takehara et al.
patent: 5196076 (1993-03-01), Ochiai
Kabe Kazuyuki
Kishi Atao
Ball Michael W.
Johnstone Adrienne C.
The Yokohama Rubber Company Ltd.
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