Tire comprising an improved bead
AssigneeCompagnie Generale Des Etablissements Michelin
InventorsPatrice Fraysse, Francois Chambriard
Life of this patent
Estimating the term…
Abstract
The tire comprises a crown, two sidewalls and two beads, each sidewall connecting each bead to the crown, a carcass reinforcement that is anchored in each bead and extends in each sidewall and radially on the inside of the crown, each bead comprising at least one continuous filamentary reinforcing element (40) comprising N≥2 circumferential turns which are radially superposed on one another. The continuous filamentary reinforcing element (40) comprises a radially outer free end (E1) and a radially inner free end (E2). At least one of the radially outer free end (E1) and the radially inner free end (E2) is threaded between two portions (50, 52) arranged radially on the outside and on the inside of the free end (E1, E2) in question.
Claims15
A tire of substantially toric shape about an axis of revolution (A),
- the tire comprising a crown, two sidewalls and two beads,
- each sidewall connecting each bead to the crown,
- the tire comprising at least one continuous filamentary reinforcing element comprising N≥2 circumferential turns about the axis of revolution (A) which are radially superposed on one another,
- the at least one continuous filamentary reinforcing element comprising a radially outer free end (E1, E3) and a radially inner free end (E2, E4), and
- the at least one continuous filamentary reinforcing element extending radially at least in part in one of the two beads,
- wherein at least one of condition I and II is satisfied:
- I—the radially outer free end (E1, E3) is, at an azimuth (Az0;
- Az0′) of the radially outer free end (E1, E3), arranged radially between:
- at least one first radially outer portion of the at least one continuous filamentary reinforcing element, the at least one first radially outer portion being arranged radially on the outside of the radially outer free end (E1, E3), and
- at least one second radially outer portion of the at least one continuous filamentary reinforcing element, the at least one second radially outer portion being arranged radially on the inside of the radially outer free end (E1, E3), and
- II—the radially inner free end (E2, E4) is, at an azimuth (Az0;
- Az0″) of the radially inner free end (E2, E4), arranged radially between:
- at least one first radially inner portion of the at least one continuous filamentary reinforcing element, the at least one first radially inner portion being arranged radially on the outside of the radially inner free end (E2, E4), and
- at least one second radially inner portion of the at least one continuous filamentary reinforcing element, the at least one second radially inner portion being arranged radially on the inside of the radially inner free end (E2, E4).
Dependencies are inferred from the claim text.