Abstract: Described herein are several embodiments of an anti-skid stud for insertion into the rubber tread of an air-filled vehicle tire. The stud can include a body that has a bottom flange, a shank element that extends outwardly from the bottom flange, and a hard cermet piece made from a material different than the body. The hard cermet piece is positioned at least partially within the body. The bottom flange can have a substantially quadrangular shape that defines diagonal dimensions. The hard cermet piece can be substantially lozenge-shaped in cross-section and define mutually different diagonal dimensions that extend in a direction perpendicular to a total length of the stud.

Abstract: The invention relates to a studded air-filled vehicle tire having a rolling direction and comprising a rubber tread with pattern blocks and grooves that-separate the blocks. Premade stud holes are arranged in the tread. Anti-slip studs each include a hard cermet piece that has a substantially quadrangular shape with diagonal dimensions are in at least part of the stud holes. At least part of the anti-slip studs arranged in the stud holes are orientated so that one of the diagonal dimensions of the hard cermet piece is located in the rolling direction or forms an angle, not larger than a toe-out angle with respect to the rolling direction.

Abstract: The invention relates to pattern blocks in the tread of a vehicle tire, the tread comprising the tread layer (20) on the tire carcass (25) and on that pattern blocks (1) separated from each other by wider grooves (21). At least part of these pattern blocks comprise fine slits (2), which are substantially narrower than the grooves, each slit comprising within the area (A1) of the pattern block at least one bend (5) or at least one end (4). Two adjacent slits (2) form surface tear points (10), each of which is formed of: webs (3a, 3b) between at least one end (4) of one slit and at least one second slit or its end; or webs (3c, 3d) between the bend of one slit and one second slit or its bend (5). The web width (W2) of the webs is at most five times the slit width (W2), and the adjacent slits restrict between their mutual webs (3a-3d) between them nubs (8) inside the pattern block.

Abstract: The invention relates to a studded air-filled vehicle tire having a rolling direction and comprising a rubber tread with pattern blocks and grooves that separate said blocks. In said tread, there are arranged premade stud holes and in at least part of said stud holes, there are anti-slip studs, having hard cermet pieces of that have a substantially quadrangular shape with diagonal dimensions At least part of the anti-slip studs arranged in the stud holes are orientated so that one of said diagonal dimensions of the hard cermet piece is located in the rolling direction or forms an angle, not larger than the toe-out angle, with respect to the rolling direction.

Abstract: The invention relates to a combination for installing anti-slip studs in an air-filled vehicle tire provided with a tread and a number of premade stud recesses. The combination includes anti-slip studs with an inner head provided with a bottom flange and an outer head provided with a top bowl, and therebetween a narrower neck portion. In the anti-slip studs at least the shape of the bottom flange is composed of a number of two or more first side portions, the center regions of which are located at a shorter distance from the stud center line, and of a number of two or more edge portions and/or of a number of two or more second side portions, the center regions of which are located at a longer distance from said stud center line. In addition, the combination includes an installation tool comprising a number of jaw fingers, said number being equal to the number of said edge portions, or twice the number of the second side portions, by which installation tool the anti-slip studs are installed in said tread.

Abstract: The invention relates to pattern blocks in the tread of a vehicle tire, the tread comprising the tread layer (20) on the tire carcass (25) and on that pattern blocks (1) separated from each other by wider grooves (21). At least part of these pattern blocks comprise fine slits (2), which are substantially narrower than the grooves, each slit comprising within the area (A1) of the pattern block at least one bend (5) or at least one end (4). Two adjacent slits (2) form surface tear points (10), each of which is formed of: webs (3a, 3b) between at least one end (4) of one slit and at least one second slit or its end; or webs (3c, 3d) between the bend of one slit and one second slit or its bend (5). The web width (W2) of the webs is at most five times the slit width (W2), and the adjacent slits restrict between their mutual webs (3a-3d) between them nubs (8) inside the pattern block.

Abstract: A vehicle tire comprising a tire carcass (3) and on top of this a cap (29) consisting of at least one rubber quality and forming the tread (7), the cap having anti-skid stud holes (5) extending from the tread to its inside. At the bottom (8) of the anti-skid stud holes (5) and thus under the bottom flange (21) of the anti-skid studs (20) elastic cushions (6) are provided, made of a material of an elasticity higher than that of the rubber quality forming the said cap (29).

Abstract: A method for making a vehicle tire comprising a tire carcass (3) and on top of this a cap (29) consisting of at least one rubber quality and forming the tread (7), the cap having anti-skid stud holes (5) extending from the tread to its inside. At the bottom (8) of the anti-skid stud holes (5) and thus under the bottom flange (21) of the anti-skid studs (20) elastic cushions (6) are provided, made of a material of an elasticity higher than that of the rubber quality forming the said cap (29).