Abstract: A non-pneumatic tire for a wheeled tower of an in-field irrigation system has a circular array of hollow cavities within the tire body. In cross-sectional planes lying normally of the rotational axis, each cavity has a circumferentially elongated cross-section of greater circumferential length than radial width. Bulbous and concavely rounded terminuses of each cavity impart a dumbbell shaped cavity profile that omits stress failure points. The cavity width tapers in an axially inward direction toward a midplane of the tire, where the cavity width is narrowest. In use, collapse of the cavity at its narrow midpoint squeezes accumulate mud out from the cavities in self-cleaning fashion. The outer circumference of the tire features sloped areas whose axial measure decreases toward the midplane. In use of the tire, the sloped areas draw mud inwardly toward the midplane and self-fill the ground beneath the tire, and thereby lessening overall rut formation.

Abstract: A tire 2 includes a tread 4 formed from a rubber composition containing: a rubber component including a styrene butadiene rubber; and a filler including silica. The tread 4 has a plurality of circumferential main grooves 10. The plurality of circumferential main grooves 10 define a pair of crown land portion 20 in the tread 4. Each crown land portion 20 has a crown narrow groove 24. Each crown narrow land portion 34 defined by the crown narrow groove 24 has a crown sipe 40. An amount CSB of the styrene butadiene rubber, an amount BS of the silica, a groove depth DGs of the crown sipe 40, and a groove depth DGg of the crown narrow groove 24 satisfy the following relational expression.

Abstract: Provided is a sidewall structure of a tire, belonging to the technical field of sidewall structures. The sidewall structure of the tire includes a tire, a side surface of the tire is designed with multiple knurling lines which are formed on a sidewall of the tire by a knurling engraving process. The knurling lines are composed of sparse knurling lines and dense knurling lines which are alternately arranged on the sidewall of the tire. The knurling lines are composed of radial protrusions distributed in an array, and the knurling lines and the tire are integrally formed. The sparse knurling lines and the dense knurling lines are composed of a plurality of knurling lines which are arranged in parallel to form non-closed polygonal patterns, respectively, and the sparse knurling lines and the dense knurling lines are connected and combined to form a new polygonal pattern on the sidewall of the tire.

Abstract: A tire comprising a tire tread having a tread region comprising a first and second rib, wherein the first and second ribs are separated by a groove; at least one tie-bar element disposed within the groove, and the tie-bar block element having opposed sidewalls separated by a radially extending groove, wherein the radially extending groove tapers from a first width to a second width, wherein the second width is wider than the first width.

Abstract: A pneumatic vehicle tire having a strength member ply comprising steel monofilaments having a cross-sectional area of 98 mm2 to 125 mm2 per meter of strength member ply, the steel has a carbon content of at least 0.86% by weight. To improve rolling resistance the monofilaments have a brass coating having a copper content of 61% by weight to 70% by weight and a zinc content of 30% by weight to 39% by weight, in that the monofilaments have a linear density of 92 g/100 m to 105 g/100 m, and the monofilaments each have a tensile density Td of 34 MPa/(g/100 m) to 39 MPa/(g/100 m). The strength member ply has an areal strength AS of 109 Nmm2 to 166 Nmm2, and the rubber material has a breaking elongation of 300% to 450%.

Abstract: A tire includes a first middle land portion provided with middle lateral grooves that traverses the first middle land portion completely in the tire axial direction, and first middle sipes that extends from a first longitudinal edge of the first middle land portion and has terminal ends in the first middle land portion. Each middle lateral groove includes a first groove portion extending from the first longitudinal edge, a second groove portion extending from a second longitudinal edge, and a circumferential groove portion being in communication with the first and second groove portions. The circumferential groove portion includes a first circumferential groove edge on a first longitudinal edge side and a second circumferential groove edge on a second longitudinal edge side. The terminal ends of the first middle sipes are located on the second longitudinal edge side to the first circumferential groove edges of the circumferential groove portions.

Abstract: A tread pattern of a pneumatic tire includes three or more circumferential main grooves extending in a tire circumferential direction, a land portion defined by the circumferential main grooves, and a sipe provided in the land portion. At least one edge of edges on both sides of the land portion in a tire width direction is a zigzag edge. The zigzag edge has a zigzag shape with recesses/protrusions that has a position periodically changing in the tire width direction. The sipe is a composite sipe including a two-dimensional portion and a three-dimensional portion, and the three-dimensional portion is connected to the zigzag edge.

Abstract: A tire 2 includes a tread 4 and a belt 14 including inner and outer layers 38 and 40. Each end of the outer layer 40 is located axially inward of an end of the inner layer 38. A circumferential narrow groove 48 is formed on each shoulder land portion 46s so as to continuously extend in a circumferential direction. A groove width of the circumferential narrow groove 48 is smaller than that of a shoulder circumferential groove 44s. The circumferential narrow groove 48 is located between the shoulder circumferential groove 44s and the end of the outer layer 40 in an axial direction. A ratio of a distance in the axial direction from the shoulder circumferential groove 44s to the circumferential narrow groove 48 to a distance in the axial direction from the shoulder circumferential groove 44s to the end of the outer layer 40 is 15% to 55%.

Abstract: A vehicle wheel tyre comprises a tread band, a tread surface, a plurality of blocks defined on the tread band, and at least one sipe formed on at least one of the blocks. The at least one sipe is open on a tread surface portion and at least on one first edge of the block, to define at least one first edge portion and at least one second edge portion adjacent to each other and at least partially bounded by the sipe. The first edge portion is defined by a chamfer extending between the tread surface portion and a wall of the block, and the second edge portion is defined by a corner resulting from the tread surface portion intersecting the wall.

Abstract: The invention relates to a commercial vehicle tire which is cold-retreadable and comprises sidewalls (5), belt plies (2a) and a profiled tread (1) with shoulder flanks (8a) located outside the ground contact area and running to the sidewalls (5), wherein a buffing indicator (9, 9?, 9?) for indicating the buffing depth is provided on at least one shoulder flank (8a), running around in the circumferential direction, possibly interrupted in some portions and formed by a multiplicity of elevations (10), wherein the elevations (10) have with respect to the level of the shoulder flank (8a) a maximum thickness, determined perpendicularly to this level, of 0.5 mm to 2.0 mm. The elevations (10) of the buffing indicator (9, 9?, 9?) are dome-shaped and have a circular base area with a diameter of 0.5 mm to 2.0 mm.

Abstract: A tire tread (1), for a heavy-duty construction plant vehicle, having an improved compromise between resistance to mechanical attack caused by stony ground and grip on muddy ground. The tread (1) has five rows (41, 42, 43) separated in pairs by a longitudinal cut (51, 52) and are distributed, along the transverse direction (YY?), in a median row (43), two intermediate rows (42), and two lateral rows (41), the blocks (31, 32, 33) in one and the same row (41, 42, 43) separated in pairs at least partially by a transverse cut (61, 62, 63), each transverse cut in a lateral row (41) is a transverse groove, each transverse cut (62) in an intermediate row (42) is either a blind transverse groove (621), or a transverse sipe (622), are arranged in alternation along the longitudinal direction XX?, and each inner longitudinal cut (52) separating two adjacent rows (42, 43), respectively intermediate and median, is a longitudinal groove.

Abstract: A pneumatic tire includes chamfered sipes in a land portion each including a chamfered portion, and non-chamfered sipes in the land portion each not including the chamfered portion. The chamfered sipe includes one end communicating with the main groove that defines the land portion and the other end terminating within the land portion. The chamfered and non-chamfered sipes are alternately disposed in the circumferential direction. Of the non-chamfered sipes on both sides in the circumferential direction of the chamfered sipe, a relationship between a distance a and a distance b is in the range 1.5?(b/a)?12, where the distance a is between the chamfered sipe and a near sipe corresponding to the non-chamfered sipe located on a side closest to the chamfered sipe, and the distance b is between the chamfered sipe and the non-chamfered sipe located further from the chamfered sipe in the circumferential direction.

Abstract: A tire 2 includes a pair of beads 10, a carcass 12, a pair of steel reinforcing layers 20, a pair of fiber reinforcing layers 26, and a tag member 28. Each bead 10 includes an apex 40. A carcass ply 48 included in the carcass 12 includes a ply body 50 and a pair of turned-up portions 52. An outer end PR1 of each fiber reinforcing layer 26 is located between an end PF of the turned-up portion 52 and an outer end PA of the apex 40. An RFID tag 62 of the tag member 28 is located between the end PF of the turned-up portion 52 and the outer end PA of the apex 40. In the fiber reinforcing layer 26, an outer end 60f of a second reinforcing ply 60 is located radially outward of an outer end 58f of a first reinforcing ply 58.

Abstract: A tire includes a pattern region on an outer surface of a sidewall of the tire, the pattern region being visually recognizable as being different from a region other than the pattern region in the outer surface of the side wall. The pattern region includes a plurality of projections, each of which includes a bottom surface, a leading end, and a barrel. The barrel includes a bulging portion having a transverse cross section with an equivalent circle diameter that is larger than an equivalent circle diameter of the bottom surface and is the largest in the projection, a bottom surface side barrel portion having a transverse cross section that gradually decreases in area from the bulging portion toward the bottom surface, and a leading end side barrel portion having a transverse cross section that gradually decreases in area from the bulging portion toward the leading end.

Abstract: A tire has a sidewall portion provided with a protrusion which includes a radially outer design portion, a mark portion and a radially inner design portion. The radially outer design portion has a radially inward contour portion comprising radially inward peak points protruding radially inward. The radially inner design portion is spaced apart from the mark portion in the tire circumferential direction. The radially inner design portion includes a radially outward contour portion having radially outward peak points protruding outward in the tire radial direction. Each of the radially inward peak points is provided at a different position in the tire radial direction than each of the radially outward peak points.

Abstract: The present invention provides a tire for a vehicle comprising: a rotation axis, a midplane at a central position along the rotation axis; a circumferential tread portion around the rotation axis, the circumferential tread portion comprising: a tread pattern exhibiting at least a first pitch pattern and a second pitch pattern each comprising: a center block crossed by the midplane, and two side block alignments, said side block alignments being inclined with respect to one another and extending from the center block; the first pitch pattern including: a first pitch length, a first number of blocks; the second pitch pattern including: a second pitch length which is shorter than the first pitch length, and a third number of blocks which is greater than the first number of blocks.

Abstract: A vehicle tire having a sidewall with at least one sidewall decoration that extends at least over a circumferential portion of the sidewall and is made up of structured surface elements, smooth surface elements and base hatching that adjoins these surface elements and is made up of hatching ribs that extend without branching and intersecting, wherein the structured surface elements reproduce a copy or a shadow at least of partial regions of smooth surface elements, and the structured surface elements absorb light to a greater extent than the base hatching. The structured surface elements are each provided with an area-covering contrast structure with branched rib portions, wherein each branched rib portion has intersection points from which the rib portion respectively extends in at least three directions.

Abstract: A pneumatic tire is provided with a mark portion raised from a surface of at least one of side portions. A first region demarcated on the mark portion side of a boundary position between the mark portion and the surface of the at least one of the side portions is provided with a plurality of micro protrusions each having a raised height smaller than a raised height of the mark portion and a second region demarcated on the surface-of-the-at-least-one-of-the-side-portions side of the boundary position is not provided with the micro protrusions.

Abstract: A heavy duty tire can have a tread portion that includes a plurality of circumferential grooves that zigzag, a plurality of lateral grooves connecting between zigzag vertexes of the circumferential grooves, and a plurality of hexagonal blocks formed by the circumferential grooves and the lateral grooves. A groove depth of the circumferential groove can be 21 mm or more. Each of the hexagonal blocks can include a three-dimensional sipe extending across the hexagonal block. The lateral groove can include a raised portion formed by raising a groove bottom of the lateral groove to connect between the hexagonal blocks adjacent to each other in the tire circumferential direction.

Abstract: First and second groove walls 2a and 2b of a meandering main groove 21 have an upper and lower groove wall portion, respectively. The first groove wall 2a has the lower groove wall-top edge 2ale extending in a wavy line along the tire circumferential direction in order that a minimum groove wall angle portion and a maximum groove wall angle portion appear alternately. In the first groove wall 2a, the minimum groove wall angle portion and a wide groove section, and the maximum groove wall angle portion and a narrow groove section, respectively, are located at the same position in the tire circumferential direction. The upper groove wall-top edge 2aue of the first groove wall 2a extends in a straight line, a wavy line or a zigzag line with an amplitude smaller than an amplitude of the lower groove wall-top edge 2ale of the first groove wall 2a.