Abstract: A tire with radial carcass reinforcement having beads with a heel portion on an axially inner side and a toe portion on an axially outer side includes two carcass reinforcement plies for tension in higher sidewall tires. The bead includes at least one bead wire coated with a rubber mix, a wedge formed of a rubber mix disposed axially outward of the at least one bead wire, and at least one rubber filler located axially and radially outward of the bead wire and wedge. The wedge is defined by two sides extending at an acute angle axially from an apex A located beneath the section of the at least one bead wire, the rubber mix forming the wedge having a Shore A hardness of at least 65 and greater than the Shore A hardness of the at least one rubber filler.
Type:
Grant
Filed:
November 27, 2001
Date of Patent:
August 24, 2004
Assignee:
Michelin Recherche et Technique S.A.
Inventors:
Robert Vanstory Teeple, James Endicott, Jean-Luc Bouvier, Pierre Fraisse, Jean-Claude Faure