28results about "Inflatable tyres" patented technology

Provide is a technology in which a pneumatic tire for use as an on-road driving wheel has the water discharge efficiency enhanced without impairing the traction performance. Also provided is a pneumatic tire (100) for use as a driving wheel, including a tread having a directional pattern containing a plurality of width-direction grooves (11) and (12). Assuming that a half-width region of the tread, as measured from the tire equator (CL) to the tread-to-ground contact end (TE) along the surface of the tire in a cross section of the tread portion (1) in the width direction of the tire, is bisected into two regions that are referred to as the tread center portion (Tc) and the tread shoulder portion (Ts) respectively in this order from the tire equator (CL), the plurality of width-direction grooves (11) and (12) extend across the tread center portion (Tc), and have a pattern convex in the rotational direction of the tire.

The present invention relates to a noise-reducing pneumatic tire and a method for manufacturing the same, and more particularly to a noise-reducing pneumatic tire that has improved sound absorption performance and can be stably mounted, and a method for manufacturing the same. [Solution] The noise-reducing pneumatic tire of the present invention comprises an inner liner for a pneumatic tire and a sound-absorbing structure attached to the inner liner. The sound-absorbing structure has a configuration that includes a sound-absorbing body attached to the inner surface of the inner liner along the circumferential direction of the pneumatic tire, and a through hole formed in the sound-absorbing body, which allows a sensor to be placed inside.

The present invention provides a sound-absorbing structure and a tire that can reduce resonance noise within the tire cavity. [Solution] The sound-absorbing structure 1 attached to the inner cavity 102 of the tire 101 comprises a skin 10 having through holes 11, a porous sound-absorbing body 20 housed in the skin 10, and a hollow neck portion 30 that communicates with the through holes 11 and is embedded in the porous sound-absorbing body 20. The skin 10 has a top portion 12 having through holes 11, and a side portion 13 extending from the peripheral edge of the top portion 12 to the mounting surface 2 attached to the inner cavity 102 of the tire 101.

To provide a tire that can reduce pitch noise. [Solution] A tire 1 having a tread portion 2 including a plurality of circumferential grooves 5 and a plurality of land portions 6. Each of the plurality of land portions 6 has a plurality of groove-shaped portions 20 formed thereon, having a first end on one side in the tire circumferential direction and a second end on the other side in the tire circumferential direction. In the arrangement rules for the plurality of groove-shaped portions 20, for each pair of adjacent groove-shaped portions 20 in the tire circumferential direction, the first end of one groove-shaped portion 20 of the pair and the second end of the other groove-shaped portion 20 of the pair are formed at the same position in the tire circumferential direction, and are formed on the same land portion 6 or on different land portions 6. In at least one land portion 6 under a 70% load condition, the absolute value of the difference between the angle θa of the contact edge on both sides in the tire circumferential direction with respect to the tire axis and the angle θb of the groove-shaped portion 20 with respect to the tire axis is 5 degrees or more.

Optimize the overall rigidity balance of the tread section. [Solution] The tire 10 has a plurality of circumferential grooves 11, 12, 13 provided in the tread portion 15, an outer shoulder portion 21 and an inner shoulder portion 22 provided in the tread portion 15, an outer central portion 31 located on the outside of the vehicle mounting and an inner central portion 32 located on the inside of the vehicle mounting, a shoulder first sipe and central first sipes 31A, 32A, and a portion of the shoulder first sipe and central first sipes 31A, 32A in the longitudinal direction Each sipe is provided with bent sections 25 and 35 that have an amplitude in the width direction of each sipe in the depth direction, and further, the outer shoulder land portion 21 and the inner shoulder land portion 22 are provided with a second shoulder sipe 22B that does not have a bent section, and the outer central land portion 31 is provided with a second central sipe 31B that does not have a bent section 35, and the number of second shoulder sipes 22B in the inner shoulder land portion 22 is greater than the number of second shoulder sipes in the outer shoulder land portion.

Provided is a tire that maintains the same dry land handling stability as conventional tires while improving wet land handling stability and wet land braking performance. In at least one land portion (14a to 14e) that is demarcated by at least two circumferential main grooves (12a to 12d), a cross groove (16a) that is inclined with respect to the tire width direction is formed in a central land portion (14a) that contains the tire equatorial plane (CP) or is closest to the tire equatorial plane. With respect to both end portions (241x, 242x) of the two cross grooves that are adjacent in the tire circumferential direction and are farther from the circumferential main grooves, a circumferential fine groove (262) is formed in the region on the opposite side in the tire width direction. The two ends (262x, 262y) of the circumferential fine groove are formed to be terminal ends within the land portion, and the circumferential fine groove is curved in a manner that protrudes toward the opposite side of the cross groove in the tire width direction.

The present invention relates to a low-noise tire, a tire inner polyurethane foam sound-absorbing lining composition for manufacturing same, and a tire inner polyurethane foam sound-absorbing lining method using same. More specifically, the present invention relates to a low-noise tire, a tire inner polyurethane foam sound-absorbing lining composition for manufacturing same, and a tire inner polyurethane foam sound-absorbing lining method using same, wherein in order to reduce cavity resonance noise, which occurs as vibration forces generated between the tire tread and road surface are transmitted to the cavity space inside the tire and the axle, leading to interior noise, a liquid foaming polyurethane composition is conveniently, rapidly, and precisely applied in a liquid foam spraying manner to the inner surface of the tire, which corresponds to the tire tread, and cured to form a polyurethane sound-absorbing lining, whereby the low-noise tire exhibits improved low-noise performance.

To provide a tire that can improve handling stability and drainage performance. [Solution] The tire 1 comprises a circumferential groove and a plurality of ribs, the plurality of circumferential grooves including a plurality of main grooves with a groove width of 3 mm or more, and having a first rib 210 which is located inward in the vehicle width direction from the outer main groove 130 which is located out main grooves, and which is offset outward in the vehicle width direction from the tire equator S2, and the groove width of the outer main groove 130 adjacent to the outer side of the first rib 210 in the vehicle width direction is greater than the groove width of the inner circumferential groove 140 adjacent to the inner side of the first rib 210 in the vehicle width direction from the circumferential groove.

To provide a tire that improves cornering performance while ensuring drainage performance. [Solution] The tire has a specified mounting direction relative to the vehicle and comprises a tread portion 3 including a main groove 10 that extends continuously along the tire circumferential direction and a land portion 20 partitioned by the main groove 10. A belt including a belt cord is embedded in the tread portion 3. The ratio of the sum of the widths of the main grooves 10, WGi (WGi / WLi), to the sum of the widths of the land portion 20, WLi, in the inner region IN, is greater than the ratio of the sum of the widths of the main grooves 10, WGo (WGo / WLo), to the sum of the widths of the land portion 20, WLo, in the outer region OUT, and the widest main groove among the main grooves 10 included in the tread portion 3 is provided in the outer region OUT. The inclination angle θs of the belt cord with respect to the tire circumferential direction in the shoulder region is greater than the inclination angle θc of the belt cord with respect to the tire circumferential direction in the center region.

This invention relates to a method for performing scheduled logistics operations. A modular autonomous robotic device assembly for transporting goods is described. The assembly includes: a modular mobility base having propulsion components, steering components, sensors for collision avoidance, and suspension actuators; a modular auxiliary power module having a power supply and a cargo door; a modular cargo storage system having foldable structural walls and a latching system; and a modular mobile autonomous module covering the cargo storage system and providing a human interface, external sensors, a wireless interface, and an autonomous controller having interface circuitry connected to the human interface and sensors on the mobile autonomous module. The assembly has a power and data transport bus that provides communication and power channels across the different modular components. A method for assembling such a robotic device on demand is further described, including a step for authenticating the different modular components during assembly.

To provide a pneumatic radial tire for a passenger vehicle that can improve a ground-contact shape to suppress motion performance from deteriorating, while the tire has an inclined belt layer with only one layer so as to be reduced in weight.SOLUTION: In a pneumatic radial tire for a passenger vehicle according to the present invention, a cross-section width SW of the tire and an outer diameter OD of the tire satisfy a predetermined relation, and a carcass has a first tire width directional part in which carcass cords are arranged radially and a second tire width directional part in which carcass cords extend obliquely with respect to a tire circumferential direction. The second tire width directional part is positioned at a half part in a tire width direction which is positioned outside when mounted on the vehicle, where carcass cords and belt cords of a carcass body part in the second tire width directional part extend in directions crossing each other, when viewed from outside in a tire radial direction.SELECTED DRAWING: Figure 4

Provided is a pneumatic tire which provides reduced tire deformation and thus improved durability by suppressing the heat shrinkage of a belt cover layer due to heating during the formation of a sealant layer, and a method for its manufacture.In a pneumatic tire comprising a tread section (1), a pair of sidewall sections (2) and a pair of bead sections (3), a belt layer (7) with an organic fiber cord thread inclined with respect to the tire's circumferential direction and a belt cover layer (8) with an organic fiber cord thread oriented in the tire's circumferential direction on an outer circumferential side of the belt layer (7) are embedded in the tread section (1), wherein the organic fiber cord thread of the belt cover layer (8) has a heat shrinkage rate in the range of 0.1% to 5.0% at 180 °C, wherein a sealant layer (20) is formed on an inner surface (10) of the tire in the tread section (1) and wherein the sealant layer (20) comprises a sealant consisting of a silicone-based composition.

To provide a tire for a motor cycle which can additionally decrease tire noise.SOLUTION: A tire 1 for a motor cycle includes a tread part 2. A crown block row 3R is arranged on a tire equator C of the tread part 2. Separation distance in a tire circumferential direction between adjacent crown blocks 3 in the tire circumferential direction includes a first distance La1 and a second distance La2 different from the first distance La1. A centroid 3c of a tread 3a of the crown block 3 is arranged at a position separated from the tire equator C as far as a distance Lb in the tire axial direction.SELECTED DRAWING: Figure 1

This invention provides a pneumatic tire that allows for efficient puncture repair using puncture repair fluid, eliminates the need for tire replacement after puncture repair, and improves the durability of the sound-absorbing material. [Solution] The present invention relates to a pneumatic tire 1 in which a sound-absorbing body 3 is detachably attached to the inner surface 2a of the tread portion 2. The sound-absorbing body 3 is formed in an annular shape by joining a main body portion 4 made of a long sponge material. The main body portion 4 has a joint surface 4c where a first end 4a on one side in the longitudinal direction and a second end 4b on the other side are joined. The joint surface 4c is inclined with respect to the radial direction of the tire. The length of the outer circumferential surface 3a of the sound-absorbing body 3 is smaller than the length of the inner surface 2a of the tread portion 2.

To provide a tire that improves handling performance during straight-line driving and cornering while ensuring drainage performance. [Solution] The tire has a specified mounting direction relative to the vehicle and includes a tread portion 3 that includes a main groove 10 extending continuously along the circumferential direction of the tire and a land portion 20 partitioned by the main groove 10. The ratio of the sum of the widths of the main groove 10, WGi (WGi / WLi), to the sum of the widths of the land portion 20, WLi, in the inner region IN is greater than the ratio of the sum of the widths of the main groove 10, WGo (WGo / WLo), to the sum of the widths of the land portion 20, WLo, in the outer region OUT, and the ratio of the sum of the void areas, AVi (AVi / ASi), to the sum of the see-through void areas, ASi, in the inner region IN is smaller than the ratio of the sum of the void areas, ABo (AVo / ASo), to the sum of the see-through void areas, ASo, in the outer region OUT.

In a pneumatic tire, the grooves reinforce the opposing tread, suppress excessive force on the tread, prevent a decrease in the tire's performance, and prevent foreign objects from getting stuck. [Solution] The pneumatic tire includes a tread. The tread includes a plurality of landforms demarcated by a plurality of grooves, the plurality of landforms having a first landform and a second landform facing each other via some grooves 22. A bridge 38 is positioned within some of the grooves 22. The bridge 38 includes a first bridge element 39 protruding from the side of the first landform and a second bridge element 40 protruding from the side of the second landform, with at least a portion of the first bridge element 39 and the second bridge element 40 overlapping in the groove depth direction.

A tire is provided that improves braking performance on ice and driving performance on snow. The tire tread has multiple circumferential main grooves, multiple lateral grooves extending in directions intersecting the circumferential main grooves, and multiple land portions divided by the circumferential main grooves and arranged in directions intersecting the circumferential main grooves. A specific land portion, having at least one land portion, includes: multiple sipes extending at the contact surface in directions intersecting the circumferential main grooves; and multiple grooves extending in directions intersecting the circumferential main grooves with a depth of 1.50 mm or less. In the central region of the tire width direction, when moving from one side of the width direction to the other, the sipes and grooves move in different directions in the tire circumferential direction. In the edge regions on both sides, further outward in the tire width direction than the central region, when moving from one side of the width direction to the other, the sipes and grooves move in the same direction in the tire circumferential direction. A specific land portion includes land portions having one or more land portions on the outer side of the tire width direction.

1. A tire comprising a tread portion, a bead portion, and a sidewall portion extending between the bead portion and the tread portion, the tread portion, the bead portion, and the sidewall portion defining an internal cavity of the tire, the tire further comprising a sealant layer disposed on the tread portion of the tire in the internal cavity of the tire, and a silicone foam noise reduction layer disposed on the sealant layer in the internal cavity of the tire.

The present invention relates to a low-noise tire, a tire inner polyurethane foam sound absorbing liner composition for manufacturing the low-noise tire, and a tire inner polyurethane foam sound absorbing liner method using the tire inner polyurethane foam sound absorbing liner composition, and more particularly, to a low-noise tire, a tire inner polyurethane foam sound absorbing liner composition for manufacturing the low-noise tire, and a tire inner polyurethane foam sound absorbing liner method using the tire inner polyurethane foam sound absorbing liner composition, in which, in order to reduce cavity resonance noise, which is generated due to vibration force generated between a tire tread and a road surface being transferred to a cavity space inside the tire and an axle, and then causing in-vehicle noise, a liquid foaming polyurethane composition is conveniently, rapidly, and accurately coated to an inner surface of the tire corresponding to the tire tread in a liquid foam spray manner, and is cured to form a polyurethane sound absorbing liner, whereby the low-noise tire exhibits improved low-noise performance.

A pneumatic tire is provided which has sufficient tire thickness in a shoulder section and provides durability and puncture sealing properties of the tire in a compatible manner by providing a carcass structure, and a method for its manufacture.In a pneumatic tire having a structure in which a carcass layer (4) is folded around a bead core (5) of each of bead sections (3) from an inside to an outside of the tire, an end (4e) of a folded section (4B) of the carcass layer (4) is arranged on an inside in the tire width direction relative to an end section (7e) of a belt layer (7), a sealant layer (20) is formed on an inner tire surface (10) in a tread section (1), and an end section (20e) of the sealant layer (20) is located in the tire width direction in the shoulder section and is arranged on an outside in the tire width direction relative to the end (4e) of the folded section (4B) of the carcass layer (4).

In a tire 1, groove units UA, UB have shoulder lug grooves 41 and shallow grooves 42 arranged in parallel with the shoulder lug grooves 41. The shoulder lug grooves 41 each extend in the tire width direction and intersect the corresponding tire ground contact end T, and terminate, at one end part, in the ground contact surface of a shoulder land part 31. The shallow grooves 42 each have an L-shape formed by connecting a first groove part 421, which extends in the tire width direction and intersects the tire ground contact end T, and a second groove part 422 which extends from the first groove part 421 toward the corresponding shoulder lug groove 41.

Valve base assembly (20) for an inner tube of a tire, in particular for an inner tube of a bicycle tire, comprising a valve base (24) that can be connected to an inner tube (12), a tubular valve stem (22) that is connected to the valve base (24), wherein the valve stem is inserted into a through-opening of the valve base (24), wherein the valve stem (22) is made of metal, wherein the valve base (24) has an outer part (26) with a dome-shaped attachment (28) and a plate-shaped fastening part (30) for fastening to the inner tube (12), and wherein a reinforcing sleeve (32) is arranged in the dome-shaped attachment (28) that defines the through-opening of the valve base (24) for inserting the valve stem (22), characterized in that the valve stem (22) has a circumferential projection (34).which rests on an upper surface of the dome-shaped attachment (28) and that a sealing ring (38) is arranged between an underside of the circumferential projection (34) and the upper surface of the dome-shaped attachment (28).

The utility model relates to an inner tube of anti-snake bite blowout, is equipped with annular tire body, is constituted by rim contact layer, elastic buffer layer and air tight layer. Rim contact layer adopts superhard butyl rubber of shao's hardness 70A, wear -resisting extrusion resistance, elastic buffer layer selects superelastic butyl rubber of shao's hardness 50A, can buffer driving impact, air tight layer is made of butyl rubber of shao's hardness 60A, ensure air tight. A plurality of evenly distributed compression ribs are equipped on one side of rim contact layer, the same material, the inside shear resistance layer is made of aramid fiber, compression rib is 1.5-2mm high, adjacent interval does not exceed 10mm, shear resistance layer is embedded enough depth and is thick 0.3-0.5mm, greatly promote anti-snake bite blowout performance. At the same time, the outer layer of rim contact layer has the self -repairing coating of epoxidized natural rubber - microencapsulated sulfur modification, slight damage can be self -repaired. The two beaks of annular tire body symmetry are convenient for inflation and deflation. The utility model effectively prevents snake bite blowout, prolongs life.

To provide a pneumatic radial tire for a passenger vehicle making both low-fuel consumption and cut-resistance compactible.SOLUTION: In a pneumatic radial tire for a passenger vehicle according to the present invention, a cross-section width SW of the tire and an outer diameter OD of the tire satisfy a predetermined relation, and an end of a carcass of a half part on one side in a tire width direction which is positioned inside when mounted on the vehicle (an end of a folded-back part of the carcass when the carcass has the carcass folded-back part) is positioned closer to inside in a tire radial direction than the end of a carcass folded-back part of a half part on the other side in the tire width direction which is positioned outside when mounted on the vehicle.SELECTED DRAWING: Figure 2

Pneumatic tire (1) having grooves in a tread section (10), wherein the ratio of a total width SW and an outer diameter OD of the pneumatic tire SW / OD SW / OD ≤ 0.3 fulfilled and in a ground contact area of ​​the tread section (10), if - a groove area ratio in a soil contact area GR is, - a ground contact width W is, - an area with a width of 50% of the ground contact width W and an equatorial plane CL of the tire as its center is a central area AC, - a groove area ratio in the central area AC GCR is, - a ground contact area in the tire width direction on an outside of the center area AC is a shoulder area AS and - a groove area ratio in the shoulder area AS GSR is such that the ground contact area of ​​the tread section (10) is formed in such a way that 10% ≤ GR ≤ 25% 0.1 < GSR / GCR ≤ 0.4 is fulfilled.