Abstract: In a pneumatic tire according to an embodiment, a spiral-shaped pattern is formed in a pattern forming area provided on a surface of a sidewall. The spiral-shaped pattern is formed by alternately providing ridges protruding from a reference surface in the pattern forming area and grooves recessed from the reference surface along a spiral while gradually changing the height and the depth with respect to the reference surface.

Abstract: In a pneumatic tire according to an embodiment, a spiral-shaped pattern is formed in a pattern forming area provided on a surface of a sidewall. The spiral-shaped pattern is formed by alternately providing ridges protruding from a reference surface in the pattern forming area and grooves recessed from the reference surface along a spiral while gradually changing the height and the depth with respect to the reference surface.

Abstract: In a pneumatic tire provided with a pattern on a surface of a sidewall, the pattern has a plurality of annular figures that are longer in a tire circumferential direction than in a tire radial direction. The plural annular figures have different sizes from one another, which are arranged so that a larger annular figure is placed on an outer side of a smaller annular figure without crossing each other, and so that intervals of the annular figures differ on one side and the other side in the tire circumferential direction.

Abstract: In a pneumatic tire according to an embodiment, a pattern is formed in a pattern forming area provided on a surface of a sidewall. The pattern includes ridges protruding from a reference surface in the pattern forming area, grooves recessed from the reference surface, and flat surfaces interposed between the ridges and the grooves adjacent to each other and extending along the reference surface.

Abstract: In a pneumatic tire according to an embodiment including a pattern formed on a sidewall, a reference line extending in a tire circumferential direction and a plurality of reference points provided on the reference line are set on the sidewall, an annular projection centered at each of the reference points is provided, and a plurality of annular projections have the same shape and overlap one another to form the pattern.

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 tire vulcanizing die comprises a tread molding surface; a sipe blade extending along the tread molding surface; and a cast projecting region extending along the tread molding surface from an end of the sipe blade; wherein width of the cast projecting region is greater than width of the sipe blade.

Abstract: A tire cure metal mold has a plurality of blades for forming a sipe provided in a protruding manner on a tread forming surface. The tire cure metal mold has a first blade extending along a first direction, a second blade extending along a second direction intersecting the first direction and a protrusion portion. The protrusion portion is formed by a local protrusion of the tread forming surface and comes into contact with a side surface of the first blade and an end surface of the second blade facing to the side surface of the first blade.

Abstract: A tire vulcanizing die comprises a tread molding surface; a sipe blade extending along the tread molding surface; and a cast projecting region extending along the tread molding surface from an end of the sipe blade; wherein width of the cast projecting region is greater than width of the sipe blade.

Abstract: A tire cure metal mold has a plurality of blades for forming a sipe provided in a protruding manner on a tread, forming surface. The tire cure metal mold has a first blade extending along a first direction, a second blade extending along a second direction intersecting the first direction and a protrusion portion. The protrusion portion is formed by a local protrusion of the tread forming surface and comes into contact with a side surface of the first blade and an end surface of the second blade facing to the side surface of the first blade.

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 tire mold is for vulcanization molding of a tire. The mold comprises a sector with which a tread surface of the tire is brought into contact. A first uneven surface for forming a tread pattern is provided at the contact position. A lower die with which a side wall portion of the tire is brought into contact has a second uneven surface for forming a pattern design continuously with the tread pattern. There is a sector moving mechanism that moves the sector in a tire width direction and a tire diametrical direction. There is also a mechanism for engaging the sector and the lower die in a mold clamp state.