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AssigneesMichelin Recherche et Technique S.A., Compagnie Generale Des Establissement Michelin
InventorsLuc Bestgen, Michel Ahouanto
Estimating the term…
The invention relates to a collapsible tyre for a vehicle, comprising at least one carcass reinforcement (5) surmounted radially from the outside by an inextensible crown reinforcement (4), itself radially on the inside of a tread (2), the said reinforcements (4, 5) each consisting of at least one layer of reinforcing elements, the said tread (2) being connected to two beads (6) by two sidewalls (8), the said beads (6) being intended to come into contact with a rim, each bead (6) comprising at least one circumferential reinforcing element (3) called a bead wire, the said bead wire (3) defining a mean line forming a substantially circular closed curve in a circumferential plane. The bead wire (3) of each bead (6) is flexible and comprises at least one concave part Pc of smaller radius Rc and of centre of curvature Cc. The invention also relates to a method of collapsing the tyre and to a use of the tyre.
A collapsible tire for a vehicle, comprising at least one carcass reinforcement associated with an inextensible crown reinforcement, itself disposed radially on the inside of a tread, the reinforcements each comprising at least one layer of reinforcing elements, the tread being connected to two beads by two sidewalls, the beads being intended to come into contact with a rim, each bead comprising at least one inextensible circumferential reinforcing element called a bead wire, the bead wire defining, when free of any stress, a mean line forming a substantially circular closed curve in a circumferential plane, the sidewalls having a thickness between 2.6 and 7 mm and the crown reinforcement having a thickness between 2 and 7 mm, wherein the bead wire of each bead is flexible, wherein after the tire has been collapsed, the mean line of the bead wire comprises at least one concave part Pc of smaller radius Rc and of center of curvature Cc.
Dependencies are inferred from the claim text.