Tire with rounded bead toe and a mold for forming the tire

Details Tire with rounded bead toe and a mold for forming the tire Tire with rounded bead toe and a mold for forming the tire

B - Operations, Transporting

60

C

B60C 15/024 (2006.01) B29C 33/42 (2006.01) B29D 30/06 (2006.01) B29D 30/08 (2006.01)

Patent

CA 2355770

A heavy load truck or bus tire for mounting on a 15° drop center rim has a rounded bead toe that eliminates mounting problems and saves on material. The bead toe is defined by the bead seat and bead toe end surface forming an included angle in a range of 105° to 150°. In addition, a transition point between the bead seat and bead toe end surface is located relative to the bead seat point as in a range of 0.95 to 0.97 of the axial distance from the tire center and at least 0.78 of the bead seat point radius. A mold for forming the tire is also disclosed.

L'invention concerne un pneu pour poids lourd destiné à être monté sur une jante à base creuse de 15 DEG et comprenant une pointe de bourrelet arrondie permettant de supprimer les problèmes de montage et de mieux conserver le matériel. Cette pointe de bourrelet est définie par la portée du talon (26) et la surface d'extrémité de la pointe de bourrelet, lesquelles forment un angle inclus compris entre 105 DEG et 150 DEG . Par ailleurs, un point de transition (30) entre la portée du talon et la surface d'extrémité de la pointe de bourrelet est situé, par rapport au point de la portée du talon (28), à une distance comprise entre 0,95 et 0,97 fois la distance axiale à partir du centre du pneu et au moins 0,78 fois le rayon du point de la portée du talon. L'invention concerne également un moule destiné à former ce pneu.

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