Abstract: Apparatus for ejecting objects from a tire tread include, in particular embodiments, a pair of adjacent ground-engaging elements, each element including a ground-engaging contact surface; a groove separating the pair of ground-engaging elements, the groove having a base and a pair of opposing sidewalls spaced apart by a groove width; a sipe having a particular size, and located in communication with a portion of the groove extending between the pair of ground-engaging elements; and, an ejector associated with the sipe, the ejector comprising a projection that extends within the groove.

Abstract: Tread for a tire provided with a running surface intended to come into contact with the roadway when running, this tread comprising a plurality of blocks of mean axis XX? intersecting the running surface of the tread, each block, including a side wall that makes a full circuit of the block about the axis XX?. This side wall intersects the running surface at an edge with a closed geometric outline, this edge delimiting a contact surface via which the block makes contact with the roadway. The side wall of the block and the opposite wall delimit an incision, the blocks being provided on their lateral surface with at least one notch having a depth measured perpendicular to the lateral surface of the block and a width measured parallel to the lateral face of the block, the at least one notch at least partially making a circuit of the block about the axis XX?, that is to say at least over 180 degrees.

Abstract: Tread for a tire provided with a running surface intended to come into contact with the roadway when running, this tread comprising a plurality of blocks of mean axis XX? intersecting the running surface of the tread, each block, including a side wall that makes a full circuit of the block about the axis XX?. This side wall intersects the running surface at an edge with a closed geometric outline, this edge delimiting a contact surface via which the block makes contact with the roadway. The side wall of the block and the opposite wall delimit an incision, the blocks being provided on their lateral surface with at least one notch having a depth measured perpendicular to the lateral surface of the block and a width measured parallel to the lateral face of the block, the at least one notch at least partially making a circuit of the block about the axis XX?, that is to say at least over 180 degrees.

Abstract: Apparatus for ejecting objects from a tire tread include, in particular embodiments, a pair of adjacent ground-engaging elements, each element including a ground-engaging contact surface; a groove separating the pair of ground-engaging elements, the groove having a base and a pair of opposing sidewalls spaced apart by a groove width; a sipe having a particular size, and located in communication with a portion of the groove extending between the pair of ground-engaging elements; and, an ejector associated with the sipe, the ejector comprising a projection that extends within the groove.

Abstract: A tread provided with a plurality of cutouts of essentially transverse orientation and characterized in that when new, some of the transverse cutouts form on the running surface hollowed zones of average width Lt greater than or equal to 2 mm and of maximum depth Pt at most equal to 80% of the thickness Pb of tread to become worn, the other transverse cutouts forming on the same running surface incisions of average width Li less than 2 mm and of depth Pi at most equal to Pt. A plurality of the incisions extending by hollowed zones such that after homogenous wear of the tread the volume V1 of the hollowed zones opening on to the new running surface is between 50% and 150% of the volume V0 formed by the hollowed zones when new.

Abstract: A tread (1) provided with a plurality of cutouts (5, 6, 71, 72, 73, 81, 82, 83) of essentially transverse orientation and characterized in that: when new, some of the transverse cutouts (5, 6) form on the running surface hollowed zones of average width Lt greater than or equal to 2 mm and of maximum depth Pt at most equal to 80% of the thickness Pb of tread to become worn, the other transverse cutouts (71, 72, 73, 81, 82, 83) forming on the same running surface incisions (71?, 72?, 73?, 81?, 82?, 83?) of average width Li less than 2 mm and of depth Pi at most equal to Pt; a plurality of the incisions (71?, 72?, 73?, 81?, 82?, 83?) extending by hollowed zones (71?, 72?, 73?, 81?, 82?, 83?) such that after homogenous wear of the tread the volume V1 of the hollowed zones (71?, 72?, 73?, 81?, 82?, 83?) opening on to the new running surface is between 50% and 150% of the volume V0 formed by the hollowed zones when new. A molding element comprising thick parts and thin parts.

Abstract: Mold for molding a tread that comprises a running surface, lateral faces and at least one axial cavity opening onto at least one lateral face. The cavity is molded with the aid of a pin which, during molding, produces two rubber mix flows that envelop the pin and reunite to form a junction surface, such that the mean length of the trace of this junction surface in a section plane perpendicular to the mold face that molds the running surface and to the axial direction, is larger than the minimum distance between the cavity and the mold face that molds the running surface.

Abstract: A tread (1) provided with a plurality of cutouts (5, 6, 71, 72, 73, 81, 82, 83) of essentially transverse orientation and characterized in that: