Tyre tread pattern and mould

Details Tyre tread pattern and mould Tyre tread pattern and mould

B - Operations, Transporting

60

C

B60C 11/12 (2006.01) B29C 33/42 (2006.01) B29D 30/06 (2006.01) B60C 11/00 (2006.01) B60C 11/04 (2006.01) B60C 11/11 (2006.01) B60C 11/13 (2006.01)

Patent

CA 2291652

The invention concerns a tyre tread comprising, over at least a lateral part and radially inside said tread running surface (38) a plurality of cavities (36, 39) oriented almost transversely and emerging on at least one of the tread edges, said cavities being designed to form notches and indentations emerging radially towards the running tread outer part after wear ranging between 15 % and 45 % of the thickness E of said tread as manufactured The invention also concerns a mould (200) adapted to mould such a pattern and comprising, over at least a part moulding one of the sidewalls, embossed elements for moulding cavities radially beneath a tyre tread running surface in new condition

Il est proposé une bande de roulement pour un pneumatique comportant, sur au moins une partie latérale et radialement à l'intérieur de la surface de roulement (38) de ladite bande, une pluralité de cavités (36, 39) orientées quasiment transversalement et débouchant sur au moins un des bords de la bande, lesdites cavités étant destinées à former des rainures et des incisions débouchant radialement vers l'extérieur de la bande de roulement après une usure comprise entre 15 % et 45 % de l'épaisseur E de ladite bande à l'état neuf. L'invention concerne également un moule (200) adapté au moulage d'une telle sculpture et comportant, sur au moins une partie moulant l'un des flancs, des éléments de relief pour mouler des cavités radialement sous la surface de roulement d'une bande de roulement d l'état neuf.

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