B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
B60C 17/06 (2006.01) B60C 13/00 (2006.01) B60C 17/00 (2006.01) B60C 17/08 (2006.01)
Patent
CA 2083994
A novel pneumatic tire is provided herein. The tire includes a tread portion, a pair of axially-spaced bead portions, a pair of sidewall portions extending between tread edges and said bead portions and a pair of bead cores, each bead core disposed in an associated one the bead portion. A carcass extends between the bead portions through the tread portion and the pair of sidewall portions. A belt is disposed radially-outside the carcass and extends across the width of the tread. Each sidewall portion is provided axially-inside of the carcass with an inside sidewall rubber layer, the inside sidewall rubber layer extending radially-inwardly to the bead portion and radially-outwardly into the tread portion along a convexly-curved inner surface of said carcass. The total thickness of the tire measured from the outer surface to the inner surface of the tire satisfies the condition that the total thickness (TA) is substantially-constant in a region (8), the region S being defined as extending between a maximum width point (A) at which the maximum width of the tire lies under an unloaded state, and a 65% height point (B) located at a 65% height (HB) of the tire section height (H), each being measured from the bead base line (b) under the unloaded state. The unloaded state is such that the tire is mounted on its regular rim and inflated to its regular inner pressure but is loaded with no tire load. The total thickness (TC) measured at a contacting point (C) is larger than the total thickness (TA) in the region (S). The contacting point (C) is defined as a point at which the outer surface of the tire starts to contact with the radially-outer edge of a flange of the regular rim under the unloaded state.
Borden Ladner Gervais Llp
Hasegawa Hirotsugu
Sumitomo Rubber Industries Ltd.
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