Patent ID: 6461135
Filing Date: 2002-10-08
Classification: B29D,B60C,Y10S

Abstract:
A mold for molding a tire provided with a tread of rubber mix, this tread having a running surface and two lateral faces axially defining said tread, said mold comprising in the molding configuration:a peripheral ring formed of sectors having a molding surface for molding at least the running surface of the tread, each sector being movable towards or away from the axis of the mold, two shells concentric to the peripheral ring, each having a molding surface for molding a lateral face of the tread, these shells being movable in the direction of the axis of the mold towards or away from each other, at least one first element in relief projecting from the molding surface of at least one of said shells for molding a channel beneath the running surface of the tread, at least one second element in relief projecting from the molding surface of a sector of the ring for molding a cutout in the tread, this mold being characterized in that, in the molding configuration, said at least one first element in relief borne by said at least one shell cooperates with said at least one second element in relief borne by said sector to form a molding element for molding in at least one motif in relief of the tread pattern a cutout opening on to the running surface of the tread, said cutout being extended to the inside of the tread by a channel opening on to at least one lateral face of the motif in relief, said first and second elements in relief forming at least one orifice which is entirely defined by said first and second elements in relief, each orifice thus formed permitting the rubber mix to pass during molding to form a connecting element between walls defining the cutout molded by said molding element.