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Patent Searching and Data


Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/1989/000113
Kind Code:
A1
Abstract:
This invention relates to a pneumatic tire which satisfies the relation L1 F1 L2 when first and second tread surface radii (TR1, TR2) defined below and the tire width (W) satisfy the relation: F1 = TR1/W, F2 = TR2/W, L1 = F2 x 4.3-2.46, L2 = F2 x 2.2-0.95 and which provides a shape of a ground-contacting surface giving a uniform ground contact pressure distribution: wherein the first tread surface radius (TR1) is defined as the radius of an arc passing one center point (P0) defined as the intersection of the tread surface with the tire equator and two second near points (P1) defined as the points on the tread surface each spaced from this center point (P0) on its both sides in the axial direction of the tire by a distance of 1/4 of the ground contact width (GW: i.e. GW/4); and the second tread surface radius (TR2) is defined as the radius of an arc passing two distant points (P2) defined as the points on the tread surface each spaced from this center point (P0) by a distance of 1/2 of the ground contact width (GW, i.e. GW/2) on its both sides in the axial direction of the tire.

Inventors:
Asano, Kazuo
Application Number:
PCT/JP1988/000649
Publication Date:
January 12, 1989
Filing Date:
June 28, 1988
Export Citation:
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Assignee:
SUMITOMO RUBBER INDUSTRIES, LTD
Asano, Kazuo
International Classes:
B60C3/04; B60C11/00; (IPC1-7): B60C11/00; B60C3/04
Foreign References:
JPS54159902A1979-12-18
JPH05959505A
Other References:
See also references of EP 0323519A4
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