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Patent Searching and Data


Title:
ANTI-IRREGULAR WEARING RADIAL-PLY TIRE
Document Type and Number:
WIPO Patent Application WO/1980/000016
Kind Code:
A1
Abstract:
To improve wear resistance of shoulder portions of a radial-ply tire, the tire comprises a tread portion (5) provided with central areas (7) (7) which each have circumferentially - extended, continuous grooves (9). The central areas each have a width (W) which is extended from tire center line (l) across a distance w defined by the following formula: w = W/2 - O.365H (where W and H are width and height, respectively, of the tire under its nominal inflation pressure.

Inventors:
Uemura Y.
Application Number:
PCT/JP1979/000136
Publication Date:
January 10, 1980
Filing Date:
May 29, 1979
Export Citation:
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Assignee:
TOYO RUBBER IND CO LTD UEMURA Y.
International Classes:
B60C11/04; B60C3/00; B60C11/00; B60C11/01; B60C11/03; (IPC1-7): B60C11/06
Foreign References:
US3858633A1975-01-07
FR2159168B11975-02-07
FR2215331B11976-05-14
CH561615A51975-05-15
CH566877A51975-09-30
Other References:
See also references of EP 0016838A4
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