Abstract: A pneumatic tire according to the present disclosure includes a pair of bead cores, a carcass ply including a main body positioned between the bead cores and a turn-up portion connected to the main body and formed by turning up around each bead core from inside to outside in a tire width direction, a cover rubber covering the main body of the carcass ply and an outer side of the turn-up portion in the tire width direction and configuring a tire outer surface, and a reinforcement layer located inward from the tire outer surface of the cover rubber and covering an outer side, in the tire width direction, of at least a portion of the turn-up portion of the carcass ply. The reinforcement layer is configured by a non-woven fabric including metal fibers or a rubber sheet material having metal fibers embedded therein.

Abstract: A pneumatic tire according to the present disclosure includes a ply including a plurality of cords arranged in parallel to each other, a cover rubber covering the ply and configuring a tire outer surface, and a reinforcement layer that, at a position of a cut edge of the ply, covers the cut edge of the ply on one side or both sides in a ply thickness direction. The reinforcement layer is configured by a non-woven fabric comprising metal fibers or a rubber sheet material having metal fibers embedded therein.

Abstract: Provided are: a tire reinforcement member having an improved durability; and a tire whose weight is reduced and durability is improved by using the tire reinforcement member. The tire reinforcement member is a tire reinforcement member 1 formed by winding a rubber strip 2 at an inclination with respect to the longitudinal direction of the member without any gaps while folding at width direction ends of the member, the rubber strip 2 being obtained by rubber-coating one reinforcing cord or a plurality of paralleled reinforcing cords. The rubber strip 2 substantially forms two reinforcing layers having different inclination directions. At a folding part T closest to a winding finish end 2e of the rubber strip 2, the rubber strip 2 is passed under an already wound rubber strip 2A and then folded, the already wound rubber strip 2A has been wound previous to the rubber strip 2 in an inclination direction different from that of the rubber strip 2.

Abstract: Provided are: a tire reinforcement member capable of improving the tire durability than before; and a tire using the same. The present invention provides a tire reinforcement member 1 including: a core material cord layer 2; and a spiral cord layer 3 spirally wound on the core material cord layer 2, wherein cords in the core material cord layer 2 are metal cords 2a having an inclination angle of 40° to 90° with respect to the longitudinal direction of the core material cord layer 2, and reinforcing cords 3a in the spiral cord layer 3 are organic fiber cords having a modulus of not less than 19 GPa.

Abstract: Provided is a pneumatic tire for preventing the occurrence of premature wear at tire width direction edge portions due to the use of an endless inclined belt. The pneumatic tire includes two or more layers of inclined belts formed by winding rubber strips S each composed of a plurality of paralleled and rubber coated cords in a direction inclined with respect to the tire circumferential direction while folding back the rubber strips at both width direction ends. Rubber members G are arranged between the rubber strips S layered at the tire width direction edge portions of the inclined belts.

Abstract: A tire (pneumatic tire 1) provided with regularly arranged concave portions (concave portions 80) dented toward a tire inner side direction from a tire surface (tire surface 50) in at least some areas on the tire surface wherein in a direction along with the tire surface, a maximum width L of the concave portion is in a range of 0.1 micrometer or more to less than 50 micrometers, a depth D reaching to a point of the innermost part of the concave portion toward the tire inner side direction from the tire surface is within a range of 0.1 micrometer or more to less than 10 micrometers, in the direction along with the tire surface, an arrangement interval P of the concave portions is within a range more largely than 0.1 micrometer to less than 100 micrometers.

Abstract: It is an object to provide a reinforcing member for a tire that can further improve tire durability by enhancing durability of members themselves used for a tire reinforcement use, and a tire in which durability is further improved by using this reinforcing member for a tire. The reinforcing member for a tire includes a network structure made of a plurality of reinforcing materials, in which the network structure is made of a knotted net or a knotless net. The tire is reinforced by this reinforcing member for a tire.

Abstract: a tire (pneumatic tire 1) provided with regularly arranged concave portions (concave portions 80) dented toward a tire inner side direction from a tire surface (tire surface 50) in at least some areas on the tire surface wherein in a direction along with the tire surface, a maximum width L of the concave portion is in a range of 0.1 micrometer or more to less than 50 micrometers, a depth D reaching to a point of the innermost part of the concave portion toward the tire inner side direction from the tire surface is within a range of 0.1 micrometer or more to less than 10 micrometers, in the direction along with the tire surface, an arrangement interval P of the concave portions is within a range more largely than 0.1 micrometer to less than 100 micrometers.

Abstract: An object of the present invention is to provide a reinforcement member for a tire, which is capable of mitigating stress concentration at respective end portions in the cord extending direction thereof in a satisfactory manner when the reinforcement member is subjected to tensile force. Specifically, the present invention provides a reinforcement member for a tire, constituted of a plurality of cords aligned in parallel to each other and coating rubber provided thereon, characterized in that: each of the cords is constituted of a plurality of filaments; each cord has the cord center portion formed by the intertwined filaments and respective cord end portions positioned at respective sides in the cord extending direction of the cord center portion; and at least one of the cord end portions is constituted of a plurality of the filaments each formed in a wavy or spiral shape and extending separately in an unraveled manner.

Abstract: The present invention provides a pneumatic tire having a bead core embedded in a bead portion of the tire, the bead core being constituted of a strand as a rubber-coated single bead wire wound around the bead portion to be juxtaposed in plural columns in the axial direction and stacked in plural rows in the radial direction to form a torus structure, characterized in that: the bead core as the torus structure is constituted of two columns of the bead wire juxtaposed in the axial direction; a winding-start end and a winding-terminal end of the bead wire are situated at the outermost rows in the radial direction of the corresponding columns thereof, respectively; and at least one of an interval between the winding-start end and an inner peripheral layer adjacent to the winding-start end of the bead wire and an interval between the winding-terminal end and an inner peripheral layer adjacent to the winding-terminal end of the bead wire is larger than any other intervals between two adjacent bead wires of the bead

Abstract: An object of the present invention is to provide a pneumatic tire in which the structure of a reinforcing layer is optimized to prevent a carcass from being separated from rubber and reliably prevent the carcass from being pulled out of a bead portion, thereby improving durability of the bead portion. The pneumatic tire has a carcass 5 formed of at least one ply constituted of: a main body 3 extending in a toroidal shape over respective portions including a pair of bead portions 1 having bead cores 2 embedded therein, a pair of sidewall portions extending on the outer side in the tire radial direction from the bead portions 1, and a tread portion extending over the respective sidewall portions; and a folded portion 4 extending from the main body 3 and being folded around the respective bead cores 2 from the inner side toward the outer side in the tire widthwise direction.

Abstract: The present invention provides a pneumatic tire in which the structure of a bead portion is optimized to prevent strength of cords constituting a carcass from being deteriorated due to fatigue, so that durability of the bead portion can be improved.

Abstract: There is proposed a tire realizing the simplification of a bead portion structure without sacrificing a bead portion durability and a steering stability. A tire comprises a carcass toroidally extending between a pair of bead cores embedded in respective bead portions, in which the carcass is combined with the bead core through such a pathway that the carcass passes inside a thickness center of the bead portion in an axial direction of the tire and reaches to a face of the bead core inside the tire and then passes through the bead core from an inside of the tire toward an outside thereof and terminates in contact with a face of the bead core at a side of a bead base.

Abstract: A tire wherein one or more rubberized organic fiber cord layers extending over an end of a carcass turnup portion in a radial direction of the tire are arranged so as to extend from a position near to an outside of the bead core over the end of the turnup portion toward the outside of the tire and spread apart to the turnup portion. A tire wherein one or more rubberized organic fiber cord layers are arranged so as to extend from a position extending over an end of a bead portion reinforcing layer made of a steel cord layer toward the outside of the tire extending over the end of the turnup portion in the radial direction of the tire and spread apart to the reinforcing layer. And also, a tire wherein a cord layer portion of one or more rubberized organic fiber cord layers extending over the end of the turnup portion in the radial direction of the tire and outside the turnup portion has a first bent portion bending toward the inside of the tire.

Abstract: A tire wherein one or more rubberized organic fiber cord layers extending over an end of a carcass turnup portion in a radial direction of the tire are arranged so as to extend from a position near to an outside of the bead core over the end of the turnup portion toward the outside of the tire and spread apart to the turnup portion. A tire wherein one or more rubberized organic fiber cord layers are arranged so as to extend from a position exceeding over an end of a bead portion reinforcing layer made of a steel cord layer toward the outside of the tire extending over the end of the turnup portion in the radial direction of the tire and spread apart to the reinforcing layer. And also, a tire wherein a cord layer portion of one or more rubberized organic fiber cord layers extending over the end of the turnup portion in the radial direction of the tire and outside the turnup portion has a first bent portion bending toward the inside of the tire.

Abstract: A tire wherein one or more rubberized organic fiber cord layers extending over an end of a carcass turnup portion in a radial direction of the tire are arranged so as to extend from a position near to an outside of the bead core over the end of the turnup portion toward the outside of the tire and spread apart to the turnup portion. A tire wherein one or more rubberized organic fiber cord layers are arranged so as to extend from a position exceeding over an end of a bead portion reinforcing layer made of a steel cord layer toward the outside of the tire extending over the end of the turnup portion in the radial direction of the tire and spread apart to the reinforcing layer. And also, a tire wherein a cord layer portion of one or more rubberized organic fiber cord layers extending over the end of the turnup portion in the radial direction of the tire and outside the turnup portion has a first bent portion bending toward the inside of the tire.

Abstract: A heavy duty pneumatic radial tire has a light weight of a bead portion and an excellent bead portion durability and is provided with a bead portion reinforcing layer covering an outer surface of a carcass ply around a bead core, in which the bead portion reinforcing layer is comprised of a single rubberized steel cord layer or of two or three independent rubberized steel cord layer segments. In this case, the steel cords arranged in the bead portion reinforcing layer have an inclination angle of a given range with respect to a circumferential line of the tire.

Abstract: A tire wherein one or more rubberized organic fiber cord layers extending over an end of a carcass turnup portion in a radial direction of the tire are arranged so as to extend from a position near to an outside of the bead core over the end of the turnup portion toward the outside of the tire and spread apart to the turnup portion. A tire wherein one or more rubberized organic fiber cord layers are arranged so as to extend from a position exceeding over an end of a bead portion reinforcing layer made of a steel cord layer toward the outside of the tire extending over the end of the turnup portion in the radial direction of the tire and spread apart to the reinforcing layer. And also, a tire wherein a cord layer portion of one or more rubberized organic fiber cord layers extending over the end of the turnup portion in the radial direction of the tire and outside the turnup portion has a first bent portion bending toward the inside of the tire.

Abstract: A heavy duty pneumatic radial tire has a light weight of a bead portion and an excellent bead portion durability and is provided with a bead portion reinforcing layer covering an outer surface of a carcass ply around a bead core, in which the bead portion reinforcing layer is comprised of a single rubberized steel cord layer or of two or three independent rubberized steel cord layer segments. In this case, the steel cords arranged in the bead portion reinforcing layer have an inclination angle of a given range with respect to a circumferential line of the tire.

Abstract: A tire wherein one or more rubberized organic fiber cord layers extending over an end of a carcass turnup portion in a radial direction of the tire are arranged so as to extend from a position near to an outside of the bead core over the end of the turnup portion toward the outside of the tire and spread apart to the turnup portion. A tire wherein one or more rubberized organic fiber cord layers are arranged so as to extend from a position exceeding over an end of a bead portion reinforcing layer made of a steel cord layer toward the outside of the tire extending over the end of the turnup portion in the radial direction of the tire and spread apart to the reinforcing layer. And also, a tire wherein a cord layer portion of one or more rubberized organic fiber cord layers extending over the end of the turnup portion in the radial direction of the tire and outside the turnup portion has a first bent portion bending toward the inside of the tire.