Combined bead portion and rim arrangement for tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorKatsuo Kimura
Life of this patent
Estimating the term…
Abstract
A tire, a wheel rim and assembly thereof in which the tire includes a pair of sidewalls each having a lower sidewall and a bead including a circumferentially extending hoop or bead core characterised by the bead extending laterally outwards of the tire to define with the lower sidewall a groove opening in the laterally outward direction and to form a space between the bead and a rim well portion of the wheel rim. The wheel rim included a pair of laterally inwardly projecting tire engaging members, each having a bead seat and the radially inner surface thereof. The tire, the rim and the assembly are light weight and easy to assemble.
Claims6
A combined bead portion and rim arrangement for a tire comprising:
- a bead seat provided on said rim and extending substantially perpendicular to a center rim plane of said tire;
- an annular notched surface formed within said bead seat;
- an annular hump formed on said bead seat on an end of said bead seat facing an interior of said tire;
- an annular ridge extending from said annular hump of said bead seat toward an exterior of said tire;
- bead reinforcements and a bead apex formed within said bead portion and substantially parallel to said bead seat;
- a bead base formed in said bead portion, said bead portion being positioned substantially parallel to said bead seat of said rim, wherein a diameter of the bead base of the bead portion is larger than a diameter of the annular notched surface of the bead seat provided on said rim;
- an annular recess formed in said bead portion and adjacent said bead base;
- and
- an annular groove formed at an innermost edge of said bead portion with respect to the center rim plane of said tire;
- wherein said annular notched surface said annular hump and said annular ridge interlockingly mate, respectively, with said bead base, said annular recess and said annular groove to securely seat said bead portion against said rim;
- said rim arrangement including a first flat disc member parallel to the center rim plane of said tire and a second cylinder-shaped disc member fit within an inner peripheral surface and spaced apart from said bead portion, said cylinder-shaped disc member including an outer peripheral wall portion substantially parallel to said bead seat.
The tire of caim 2, wherein the bead core is elongated in the lateral direction, being laterally wider than its radial thickness.
Dependencies are inferred from the claim text.