Patent ID: 8763664

Claim:
A tire bead reinforcement having a bi-material structure comprising: reinforcing elements that consist of two types: a plurality of extensible first reinforcing elements each having a length L 1 and a first end disposed on a first side of the bi-material structure and a second end disposed on a second side of the bi-material structure, and a plurality of inextensible second reinforcing elements each having a first end disposed on the first side of the bi-material structure and a second end disposed on a second side of the bi-material structure, wherein the first and second reinforcing elements are mutually parallel and distributed alternately in appropriate proportions in order to achieve a desired level of reinforcement, wherein the first and second reinforcing elements lie within the same mean plane, wherein the extensible first reinforcing elements are coupled to the inextensible second reinforcing elements over a coupling length Lc which is shorter than the length L 1 of the extensible first reinforcing elements, whereby each of the first ends of the extensible first reinforcing elements is offset in relation to each of the first ends of the inextensible second reinforcing elements or each of the second ends of the extensible first reinforcing elements is offset in relation to each of the second ends of the inextensible second reinforcing elements, or both.