Abstract: A tire comprises a tread portion 2 comprising at least a first main groove 3 and a second main groove 4 extending continuously in a tire circumferential direction. The first main groove 3 comprises a first oblique portion 11 inclined with respect to the tire circumferential direction and a second oblique portion 12 connected with the first oblique portion and inclined in an opposite direction to the first oblique portion 11. The second main groove 4 comprises a third oblique portion 13 inclined in a same direction as the first oblique portion 11 with respect to the tire circumferential direction, a fourth oblique portion 14 inclined in an opposite direction to the third oblique portion 13, and a longitudinal groove portion 15 disposed between the third and fourth oblique portions 13 and 14 so that they are not directly connected and extending along the tire circumferential direction.

Abstract: The invention provides for a heavy truck tire having a sub-casing, a belt package and a rubber tread, the tread comprising a center zone separating two shoulder zones. The upper shoulder layer consisting of an upper shoulder rubber compound being different from a lower shoulder rubber compound, wherein: the upper shoulder rubber compound has a G*50 of at least 1.3 Mpa and a max tan(?) of at least 0.12; the lower shoulder rubber compound has a max tan(?) not greater than the max tan(?) of a center rubber compound in the center zone being intended to come into contact with the ground; and the center rubber compound has a max tan(?) of at most 0.09.

Abstract: A pneumatic tyre includes a tread portion, two axially spaced sidewall portions extending radially inwardly from the tread portion, at least one of the sidewall portions being provided with a side protector that protrudes axially outwardly and having an inner end located radially outwardly of a tyre-maximum-width position, and two axially spaced bead portions connected to radially inward of the respective sidewall portions. Each bead portion includes a bead apex rubber having an outer end in the tyre radial direction being located radially inwardly of the tyre-maximum-width position. A radial length of a tyre inner region from a bead baseline to the outer end of each bead apex rubber is in a range of from 0.8 to 1.2 times a radial length of a tyre outer region from a radially outermost position of the tread portion to the inner end of the side protector.

Abstract: A plurality of main grooves extending from a tread center region including a tire equator to ground contact ends so as to be inclined with respect to a tire width direction are provided on a tread section at intervals in a tire circumferential direction. Sub-grooves extending in a direction crossing the tire width direction with a narrower groove width than the main grooves in the tread center region are provided. Tie bars connecting blocks separated by the sub-grooves are provided inside the sub-grooves.

Abstract: A pneumatic tire comprises a belt layer disposed in the tread portion. The average cord angle ?n and average cord count Nn of the belt layer are constant or gradually increases or decreases from a center position to shoulder positions. The ratio ?ns/?nc of the average cord angle ?ns at the shoulder positions to the average cord angle ?nc at the center position is 1.30 or less. The ratio Nns/Nnc of the average cord count Nns at the shoulder positions to the average cord count Nnc in the center position is 0.77 or more.

Abstract: A process for the production of a traction or carrying means built up from a plurality of components or assemblies of extruded elastomeric material, wherein, in a first substep, a first component, provided with reinforcing members or cables, of the traction or carrying means is produced and, in further substeps, a traction or carrying means, which is connected to further components or provided with further layers of elastomeric material, fabric layers or reinforcing-member layers, is successively completed, and optionally said traction or carrying means is shaped on one or more sides, wherein the individual substeps follow one another such that a component processed or completed in the respectively preceding substep is fed at room temperature (Rt), after a maximum of 1 to 10 minutes, to the subsequent substep, and such that the temperature of the component does not drop below 30° C. between a respectively preceding substep and the subsequent substep.

Abstract: The pneumatic tire according to the disclosure includes a resin-coated belt comprising a wire coated with a coating resin. A base ring is formed at a tire radial inside of the resin-coated belt, while being in contact with a tire widthwise outer end of the resin-coated belt. A concavo-convex portion is formed on at least one of surfaces of the base ring.

Abstract: In a pneumatic tire are defined: a first imaginary line VL1 passing through a ground contact surface in a meridian cross section of a tread, a second imaginary line VL2 passing through a bottom of a shoulder groove and parallel to VL1, an intersection point P between VL2 and a surface of a shoulder land outward of a ground contact edge T in a lateral direction, and an equatorial plane CL. Given A as a distance in the lateral direction between P and CL, B as a groove depth of the shoulder groove, and C as a distance in the lateral direction between T and CL, 0.80?(B+C)/A?1.15 is satisfied. Given Q as a distance in the lateral direction between CL and an end of a belt ply that has a shorter dimension in the lateral direction, 0.75?Q/C?0.95 is satisfied.

Abstract: A pneumatic tyre including a tread portion, wherein the tread portion has a groove which is oriented at an angle between +45 and ?45 degrees with respect to the rolling direction of the tyre, the groove having a depth extending in the radial dimension, wherein the groove includes a plurality of protrusions extending along the direction of the groove, wherein each protrusion has a length in the direction of the groove, a width perpendicular to its length and a height. Each protrusion has a length of at least 75% of the circumferential length of the tyre tread.

Abstract: A mold system and method for forming a casting article for investment casting is disclosed. The mold system includes a mold for receiving therein a selected core chosen from a plurality of varied cores. The mold includes a plurality of separable mold portions that are coupleable together to create the mold and configured to form a sacrificial material from a sacrificial material fluid about the selected core. At least one selected separable mold portion of the plurality of separable mold portions includes a set of varied interchangeable versions of the at least one selected separable mold portion. Each varied interchangeable version of the selected separable mold portion is configured to accommodate a different core of the plurality of varied cores. A number of systems for controlling a temperature of the mold are also disclosed.

Abstract: A tire includes an outboard tread edge and an inboard tread edge to be located on an outboard side and an inboard side of a vehicle, respectively, circumferentially and continuously extending main grooves, and land portions divided by the main grooves. The land portions include an outboard shoulder land portion, an outboard middle land portion, an inboard shoulder land portion, and an inboard middle land portion. Each of the outboard shoulder land portion, the inboard shoulder land portion, and the inboard middle land portion is provided with axially extending lateral grooves. The outboard middle land portion is provided with outboard middle lateral grooves extending from an edge of the outboard middle land portion on the outboard tread edge side toward the inboard tread edge. The outboard middle lateral grooves are inclined with respect to a tire circumferential direction at angles smaller than those of the lateral grooves.

Abstract: A heavy truck tire tread (2) having a longitudinal direction (LgD), a lateral direction (LtD), a tread depth direction (TdD), a ground contact surface (CS) and a pair of opposing tread shoulders (3, 4) spaced apart along the lateral direction is provided. The tread has a shoulder zone (SZ, SZ?) adjacent each tread shoulder of the pair of opposing tread shoulders, the shoulder zones consisting of blocks (5, 6) adjacent to each other along the longitudinal direction and separated by lateral grooves (7, 8). A center zone (CZ) is defined between the shoulder zones. The center zone is decoupled from both shoulder zones by at least one longitudinal sipe (11) or groove, and each lateral groove (7) in a shoulder zone (SZ) is directly connected to an opposite lateral groove (8) in the opposite shoulder zone (SZ?) by a lateral sipe (10) of the center rib.

Abstract: A tread block arrangement suitable for a tire or for a tread band for a tire. The tread block arrangement comprises a tread block that limits a first primary sipe. The first primary sipe comprises at least a first deep part and a second deep part separated from the first deep part by a first shallow part. A depth of the first deep part is at least three times a depth of the first shallow part and a depth of the second deep part is at least three times the depth of the first shallow part. The first deep part is limited in a longitudinal direction of the first primary sipe by a primary first end wall and a secondary first end wall such that a first angle between the primary first end wall and the secondary first end wall is from 1 degree to 30 degrees.

Abstract: A pneumatic tire includes a land portion having a circumferential direction sipe extending in a direction inclined with respect to the tire circumferential direction, a partial land portion positioned on at least one of the land portion partitioned with the circumferential direction sipe, and a plurality of cross sipes extending in a direction intersecting with the circumferential direction sipe in the partial land portion. The partial land portion includes a wide end portion and a narrow end portion. The plurality of cross sipes include a wide portion sipe located closest to a wide end of the partial land portion, and a narrow portion sipe located closest to a narrow end of the partial land portion. The wide portion sipe has a distal end positioned in a sipe projection portion, and the narrow portion sipe has a distal end positioned in a non-sipe projection portion.

Abstract: A pneumatic tire includes a tread; sidewalls; beads inward of the sidewalls; lug grooves formed in the tread and inclined symmetrically about the equator, an inclination angle ? of the lug grooves with respect to the lateral direction being 15°???45°; and shoulder grooves connecting the lug grooves and inclined in an opposite direction to the lug grooves, a center line of the shoulder grooves at both sides meeting with two of the lug grooves at intersection points. A difference between distances L1, L2 from the equator to the intersection points and a tread width TW satisfy TW×0.03?|L1?L2|?TW×0.2. An average value of the distances and the tread width TW satisfy TW×0.15?(L1+L2)/2?TW×0.35. A groove area ratio of the tread is from 0.4 to 0.7.

Abstract: A tyre for bicycle wheels, having a carcass structure, a belt layer arranged in a radially outer position with respect to the carcass structure and a tread band arranged in a radially outer position with respect to the belt layer. The carcass structure has a carcass ply engaged with a pair of annular anchoring structures and including a plurality of reinforcing cords. The cords are inclined, with respect to an equatorial plane of the tyre, at a first angle between about 65° and about 90°. The belt layer has a reinforcing cord wound onto the carcass structure according to a winding direction oriented, with respect to the equatorial plane, at a second angle between about 0° and about 30°.

Abstract: A tire having includes a V-shaped kerf to increase the directionality of running of the tire and having a drainage section at the lower side of the kerf to enhance (e.g., improve) the water drainage performance. The tire having V-shaped kerfs includes a kerf formed on a block and allowing water introduced thereinto to be discharged to a groove, and a drainage section connected to the groove to discharge the water to the groove, the drainage section being a space defined in the longitudinal direction of the kerf.

Abstract: A tire comprises a tread portion 2. The tread portion 2 comprises a plurality of lateral grooves 8 extending in a tire axial direction and blocks 9 divided by the lateral grooves 8. At least one of the blocks 9 includes a first lateral block wall 16 positioned on a side of one of the lateral grooves 8 adjacent thereto and a sipe pair 22 consisting of a first lateral sipe 23 and a second lateral sipe 24 adjacent to each other in the tire axial direction with a gap 25 therebetween. The first lateral block wall 16 has, at a center portion thereof in the tire axial direction, a convex portion 20 partly protruding toward the one of the lateral grooves 8. The gap 25 is arranged in a convex portion projection area 26 obtained by extending the convex portion 20 along a tire circumferential direction.

Abstract: A tire comprises a tread portion 2. The tread portion 2 comprises a plurality of oblique grooves 10 extending obliquely from a first tread edge Te1 positioned on one side in a tire axial direction toward a tire equator C, and a plurality of oblique land regions 13 each defined between a pair of the oblique grooves 10 adjacent to each other in a tire circumferential direction. Each of the oblique land regions 13 is provided with a plurality of joint grooves 15 each connecting between the pair of the oblique grooves 10.

Abstract: A stud pin for mounting in a pneumatic tire includes a tip including a tip end surface configured to come into contact with a road surface, and a body portion configured to house the tip. An end surface of the tip configured to come into contact with a road surface comprises an axis of symmetry which defines a line symmetrical shape of the end surface; a centroid of a shape of the end surface offset to a first side in an axial direction from a center position of a range the end surface covers in the axial direction of the axis of symmetry; and a recessed portion recessed inward of the end surface, the recessed portion being provided on, of peripheries of the end surface, a periphery of the end surface running between a first most distal end portion and a second most distal end portion.