B60C11/01

PNEUMATIC TIRE
20230147644 · 2023-05-11 · ·

A pneumatic tire includes a tread portion having a first tread edge, and a first buttress portion extending inwardly in a tire radial direction from the first tread edge. The first buttress portion is provided with a plurality of protectors protruding outwardly in a tire axial direction. Each of the plurality of protectors includes a top surface facing outwardly in the tire axial direction, and a side surface extending inwardly in the tire axial direction from an edge of the top surface. The side surface includes an outward-facing portion facing outwardly in the tire radial direction, an inward-facing portion facing inwardly in the tire radial direction, and a circumferential portion facing in a tire circumferential direction. The outward-facing portion, the inward-facing portion and the circumferential portion have different angles with respect to respective normal lines of the top surface from each other.

Pneumatic vehicle tire

A pneumatic vehicle tire, in particular a commercial-vehicle tire, having a one- or multi-ply carcass, a multi-ply belt or breaker and having a profiled tread with grooves formed to a profile depth, wherein the profiled tread is provided at the tire shoulders either with a respective block row (2) or with a respective profile rib (7), wherein the blocks (1) of the shoulder-side block rows (2), or the shoulder-side profile ribs (7) each have a peripheral edge (1a, 7a) laterally delimiting the ground contact patch of the tire, or a shoulder rounding with a radius of up to 30.0 mm, wherein shoulder flank surfaces that extend in a radial direction adjoin the peripheral edges or the shoulder roundings, and wherein, in the case of shoulder roundings, an imaginary section line is defined between an envelope of the tread that is continued beyond the shoulder rounding and the shoulder flank surface that is continued beyond the shoulder rounding. The shoulder flank surfaces are provided, at in particular regular intervals over the tire circumference and within a distance (a) of 1.25 times to 2.5 times the profile depth from the respective peripheral edge (1a, 7a) or, in the case of shoulder roundings, from the imaginary section line, with at least one areal recess (6, 6′, 6″) having a depth (t) of 0.5 mm to 5.0 mm, which contains ribs (5) that extend parallel to one another and have a height (h) such that the ribs (5) do not project beyond the level of the shoulder flank surfaces.

Pneumatic vehicle tire

A pneumatic vehicle tire, in particular a commercial-vehicle tire, having a one- or multi-ply carcass, a multi-ply belt or breaker and having a profiled tread with grooves formed to a profile depth, wherein the profiled tread is provided at the tire shoulders either with a respective block row (2) or with a respective profile rib (7), wherein the blocks (1) of the shoulder-side block rows (2), or the shoulder-side profile ribs (7) each have a peripheral edge (1a, 7a) laterally delimiting the ground contact patch of the tire, or a shoulder rounding with a radius of up to 30.0 mm, wherein shoulder flank surfaces that extend in a radial direction adjoin the peripheral edges or the shoulder roundings, and wherein, in the case of shoulder roundings, an imaginary section line is defined between an envelope of the tread that is continued beyond the shoulder rounding and the shoulder flank surface that is continued beyond the shoulder rounding. The shoulder flank surfaces are provided, at in particular regular intervals over the tire circumference and within a distance (a) of 1.25 times to 2.5 times the profile depth from the respective peripheral edge (1a, 7a) or, in the case of shoulder roundings, from the imaginary section line, with at least one areal recess (6, 6′, 6″) having a depth (t) of 0.5 mm to 5.0 mm, which contains ribs (5) that extend parallel to one another and have a height (h) such that the ribs (5) do not project beyond the level of the shoulder flank surfaces.

TREAD FOR HEAVY TRUCK WINTER TIRE

The tread has four grooves that delimit a central, intermediate and edge regions. Each intermediate region is divided into elongated raised elements that delimit oblique grooves which open into the circumferential grooves and are inclined at an average angle of between 30 and 60 degrees relative to the circumferential direction. The raised elements have an average circumferential length of between 50 and 70 mm. The depth of the oblique grooves is at least 30% of the depth of the circumferential grooves. Each raised element has a plurality of sipes that open into the oblique grooves. Each raised element also has an internal and oblique cut that has a total depth at least equal to 75% of the thickness PMU to be worn away. The oblique cut has a wide part and a part that forms a sipe that extends by a channel that forms a new groove after wear.

TREAD FOR HEAVY TRUCK WINTER TIRE

The tread has four grooves that delimit a central, intermediate and edge regions. Each intermediate region is divided into elongated raised elements that delimit oblique grooves which open into the circumferential grooves and are inclined at an average angle of between 30 and 60 degrees relative to the circumferential direction. The raised elements have an average circumferential length of between 50 and 70 mm. The depth of the oblique grooves is at least 30% of the depth of the circumferential grooves. Each raised element has a plurality of sipes that open into the oblique grooves. Each raised element also has an internal and oblique cut that has a total depth at least equal to 75% of the thickness PMU to be worn away. The oblique cut has a wide part and a part that forms a sipe that extends by a channel that forms a new groove after wear.

TIRE
20230191850 · 2023-06-22 ·

A tire includes a plurality of circumferential main grooves extending in a tire circumferential direction, and a pair of shoulder land portions and one or more rows of center land portions defined by the plurality of circumferential main grooves. Further, at least one of the pair of shoulder land portions includes a plurality of shoulder lug grooves and a plurality of shoulder blocks defined and formed by the plurality of shoulder lug grooves. Additionally, at least a part of the plurality of shoulder blocks includes a notch portion that connects edge portions separated from a tire ground contact edge and a buttress portion. Additionally, the notch portion has a step-shaped wall surface in a cross-sectional view in a tire meridian direction.

PNEUMATIC TIRE
20170341470 · 2017-11-30 · ·

A tire 22 includes a plurality of ribs 68 aligned in an axial direction. A rib 68s, among the plurality of ribs 68, disposed on an outer side in the axial direction is sectioned into a body portion 74 and a side portion 76 by a groove 72 that extends in a circumferential direction. The tire 22 includes a tread 26 and a pair of sidewalls 28. The sidewalls 28 extend almost inward from ends, respectively, of the tread 26 in a radial direction. The tread 26 includes a base layer 52, and a cap layer 54 disposed outward of the base layer 52 in the radial direction. The side portion 76 is formed by the cap layer 54 and a corresponding one of the sidewalls 28. The sidewall 28 is stacked on the cap layer 54 in the side portion 76.

PNEUMATIC TIRE
20170341470 · 2017-11-30 · ·

A tire 22 includes a plurality of ribs 68 aligned in an axial direction. A rib 68s, among the plurality of ribs 68, disposed on an outer side in the axial direction is sectioned into a body portion 74 and a side portion 76 by a groove 72 that extends in a circumferential direction. The tire 22 includes a tread 26 and a pair of sidewalls 28. The sidewalls 28 extend almost inward from ends, respectively, of the tread 26 in a radial direction. The tread 26 includes a base layer 52, and a cap layer 54 disposed outward of the base layer 52 in the radial direction. The side portion 76 is formed by the cap layer 54 and a corresponding one of the sidewalls 28. The sidewall 28 is stacked on the cap layer 54 in the side portion 76.

Tire

In a tire, a tread includes a cap layer forming a part of an outer surface of the tire, a base layer disposed inwardly of the cap layer in a radial direction, and an intermediate layer disposed between the cap layer and the base layer in the radial direction. A loss tangent of the intermediate layer at 30° C. is less than a loss tangent of the cap layer at 30° C. and a loss tangent of the base layer at 30° C. is less than the loss tangent of the intermediate layer at 30° C. The tread includes at least two three-layer body portions formed of the cap layer, the intermediate layer, and the base layer, and at least one two-layer body portion that is formed of the cap layer and the base layer and disposed between a first three-layer body portion and a second three-layer body portion.

Tire

In a tire, a tread includes a cap layer forming a part of an outer surface of the tire, a base layer disposed inwardly of the cap layer in a radial direction, and an intermediate layer disposed between the cap layer and the base layer in the radial direction. A loss tangent of the intermediate layer at 30° C. is less than a loss tangent of the cap layer at 30° C. and a loss tangent of the base layer at 30° C. is less than the loss tangent of the intermediate layer at 30° C. The tread includes at least two three-layer body portions formed of the cap layer, the intermediate layer, and the base layer, and at least one two-layer body portion that is formed of the cap layer and the base layer and disposed between a first three-layer body portion and a second three-layer body portion.