A self-healing pneumatic tire, which uses the sealant stored in the tire to fix a leak, is disclosed.

A sealing device comprising a flexible holding strip having an adhesive layer on a first surface, wherein the strip is configured for attachment to an inner surface of a tubeless tire via the adhesive layer, and a plurality of flexible flags attached to a second surface of the flexible holding strip opposite the first surface, wherein the plurality of flags is attached to the second surface at a fixed widthwise edge of each of the plurality of flags and wherein the plurality of flags are configured to seal a hole in the tubeless tire when the strip is attached to the inner surface of the tubeless tire is provided. Methods of protecting tires by attaching a sealing device are also described.

A tire with in-situ generated intrinsic puncture sealant layers and intrinsic noise damper comprising a supporting tire carcass having one or more layers of ply, an outer circumferential tread, and a radially inner layer, a pair of beads, sidewalls extending radially inward from the axial outer edges of a tread portion to join the respective beads, a sealant comprising at least one layer of sealant, disposed radially inwardly from said radially inner layer of said tire carcass, an intrinsic cellular noise damper as the innermost layer adjacent to the sealant, wherein said noise damper has a density less than 1.3 g/cm.sup.3; and wherein said sealant provides self-sealing properties to the tire.

The tire comprises a tread comprising a main circumferential cut (52, 54, 56, 58) and a rib (62, 64, 66, 68, 70), an airtight internal layer, and a layer of a self-sealing product (80) comprising: an axial portion extending in line with the main circumferential cut (52, 54, 56, 58) and having an average thickness Ea>0, and an axial portion extending in line with the rib (62, 64, 66, 68, 70) and having an average thickness Eb≥0 of self-sealing product such that Eb<Ea.

The tire comprises a tread comprising a main circumferential cut (52, 54, 56, 58) and a rib (62, 64, 66, 68, 70), an airtight internal layer, and a layer of a self-sealing product (80) comprising: an axial portion extending in line with the main circumferential cut (52, 54, 56, 58) and having an average thickness Ea>0, and an axial portion extending in line with the rib (62, 64, 66, 68, 70) and having an average thickness Eb≥0 of self-sealing product such that Eb<Ea.

Processes for producing a sealant layer-tire inner liner combination as well as a sealant layer-containing tire and related processes involving the sealant layer-containing tire are disclosed. The sealant layer is adhered to the tire inner liner, has a thickness of 2-8 mm and comprises 100 parts of at least one rubber, 300-500 phr of at least one tackifier, optionally one or more extenders, optionally at least one hydroscopic substance, and a cure package.

Processes for producing a sealant layer-tire inner liner combination as well as a sealant layer-containing tire and related processes involving the sealant layer-containing tire are disclosed. The sealant layer is adhered to the tire inner liner, has a thickness of 2-8 mm and comprises 100 parts of at least one rubber, 300-500 phr of at least one tackifier, optionally one or more extenders, optionally at least one hydroscopic substance, and a cure package.

A self-sealing pneumatic tire having at least one cohesive sandwich radially inward of the pneumatic tire is provided. The at least cohesive sandwich may include a cohesive material under pressure, facilitating a recovery capacity upon being pierced by a sharp object, whereby the molecules of the cohesive material cohesively reattach, self-sealing any passageway or space created by the sharp object. The self-sealing pneumatic tire may also provide a loculated-diamond-section layer located radially inward of the outer cohesive sandwich, further supporting the self-sealing pneumatic tire. The external rubber tread are disposed along the circumference of the tire in some embodiments can be separate from the surface of the tire yet secured in place by attachments. Once fully utilized, this external rubber tread can be replaced by a new version without having to replace the entire tire.

A pneumatic tire of the present disclosure includes: a pair of bead cores embedded in a pair of bead portions, the pair of bead cores each including a pair of small bead cores divided in a tire width direction; and a carcass including one or more carcass plies, the carcass toroidally straddling between the pair of bead cores with end portions of the carcass each sandwiched between the pair of small bead cores and engaged with the small bead cores, in which a sound control body is disposed on an inner surface of the tire in the pair of bead portions.

A pneumatic tire of the present disclosure includes: a pair of bead cores embedded in a pair of bead portions, the pair of bead cores each including a pair of small bead cores divided in a tire width direction; and a carcass including one or more carcass plies, the carcass toroidally straddling between the pair of bead cores with end portions of the carcass each sandwiched between the pair of small bead cores and engaged with the small bead cores, in which a sound control body is disposed on an inner surface of the tire in the pair of bead portions.