122results about "Motorcycle tyres" patented technology

Shape memory alloy elements (“SMAs”) are bonded, encased, or encapsulated with one or more polymers to form an integrated component with unique elastic, pseudoelastic, and load-bearing properties.

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.

A motorcycle tire (1) includes crown blocks (4) including first crown blocks (6) and second crown blocks (7). Each of the first crown blocks (6) has a heel-side edge (11) formed in a V-shape and inclined at an angle (α1) of 10 to 45 degrees on both axial sides with respect to the tire axial direction. A total number of the first crown blocks (6) is in the range from 30% to 70% of a total number of the crown blocks (4). Each of the second crown blocks (7) has a second ground contacting surface shape (7a) having a maximum length (WC) in the tire axial direction smaller than a maximum length (W1) in the tire axial of the first ground contacting surface shape (6a) of each of the first crown blocks (6).

A two-wheel vehicle tire (1) has a tread portion (2). The tread portion (2) includes a plurality of grooves (8). The grooves (8) include crown grooves (10) arranged on a tire equator (C), middle grooves (20), and shoulder grooves (30). Each of the crown grooves (10) is bent in a V-shape so as to be convex to one side in a tire circumferential direction. Each of the grooves (8) has the shortest distance (L1) from 5% to 30% of a tread development half width (TWh) between another one of the grooves (8) immediately adjacent to the each of the grooves (8).

The present invention relates to a tire for use on asphalt pavements having a tread surface (16) having a continuously smooth portion (20). The or each continuously smooth portion (20) has a plurality of recesses (26) and a plurality of protrusions (28). The recesses (26) and protrusions (28) are arranged such that, when the continuously smooth portion (20) runs over a road surface, the average protrusion crest pressure exerted, on average, by the road surface on the crests (32) of the protrusions (28) is strictly greater than the average recession base pressure exerted, on average, by the road surface on the bases (30) of the recesses (26).

The present invention relates mainly to a big enduro type motorcycle tire for off-road use. By virtue of a specific "cap and base" configuration of the tread band and of the specific mechanical properties of the compounds constituting it, the tire according to the invention improves the performance both on dry and wet surfaces, both in off-road and road driving.

To provide a motorcycle tire enhanced in steering stability, particularly, the feeling of falling during rolling. A motorcycle tire in which a directional pattern including at least one center main groove 11 is provided on a tread surface portion. A negative rate of the entire tread surface portion is 10% or less, and a ratio Gs / Gc between shear rigidity Gs at a position of ¼ of a tread width TW from a tread edge TE as measured in a tire width direction and shear rigidity Gc at a position of ½ of a tread width TW from a tread edge TE as measured in a tire width direction, in the tread surface portion, is 95% to 100%.

Provided is a motorcycle tire capable of improving traction performance and suppressing a significant decrease in slip control performance during cornering. A motorcycle tire (1). A first crown block (6) has a V-shaped leading edge (11). The leading edge (11) is inclined at an angle (α1) of 10 to 45 degrees. The total number of the first crown blocks (6) is 30 to 70% of the total number of crown blocks (4). A second tread surface shape (7a) of a second crown block (7) has a maximum length (WC) in the tire axial direction that is smaller than a first tread surface shape (6a) of the first crown block (6).

A motorcycle tire set S includes a front wheel tire S1 and a rear wheel tire S2 each provided with a plurality of inclined grooves 3. Each inclined groove 3 includes a first portion 11 extending in a crown region Cr, a second portion 12 extending in a shoulder region Sh, and a third portion 13 connecting the first portion 11 and the second portion 12. The third portion 13 has a smaller groove width than the first portion 11 and the second portion 12. The first portion 11, the second portion 12, and the third portion 13 are inclined in the same direction with respect to a tire circumferential direction. Each inclined groove 3 of the rear wheel tire S2 comes into contact with the ground from the first portion 11 toward the third portion 13 based on a tire rotation direction R.

The invention relates to an inflation valve for use with a tubeless tire, the inflation valve comprising a ball valve. The ball valve optionally includes a housing in which a ball is disposed, the ball forming a through-hole, the ball being rotatable between an open position in which air and / or sealant are permitted to flow through the through-hole and a closed position in which air and / or sealant are permitted to flow through the through-hole, the ball being rotatable between an open position in which air and / or sealant are permitted to flow through the through-hole and a closed position in which air and / or sealant are permitted to flow through the through-hole. Air and / or sealant are substantially prevented from flowing through the through-hole.

To provide a motor cycle tire in which steering stability, particularly, a falling feeling at the time of rolling is improved.SOLUTION: Provided is a motor cycle tire in which a directional pattern including at least one center major groove 11 is provided in a tread part. A negative ratio in the entire tread part is equal to or less than 10%. In the tread part, a ratio Gs / Gc of shearing rigidity Gs measured in a tire width direction at a 1 / 4 position of a tread width TW from a tread end TE and shearing rigidity Gc measured in the tire width direction at a 1 / 2 position of the tread width TW from the tread end TE is 95% to 100%.SELECTED DRAWING: Figure 1

To provide a tire capable of realizing improvement of rigidity and reduction of noise.SOLUTION: A tire includes a tire body and a plurality of tread pattern structures. The tire body has a tread. The plurality of tread pattern structures each have a pattern block and one or more step-wise blocks. The pattern block has a forth tread part and a back tread part. The forth tread part goes in the revolving direction of the tire, and the back tread part goes in an opposite direction to the revolving direction of the tire. The step-wise block is connected to the back tread part of the pattern block, and has a height smaller than that of the pattern block. Due to the structure feature, the tire can improve rigidity of the tread, and stability at high-speed travel via the step-wise block, and simultaneously, reduce noise caused by abrasion of the tread.SELECTED DRAWING: Figure 1

A front tyre (1) for a motorcycle wheel is described, comprising an equatorial plane (X-X) and a tread band (8) having an overall axial extension (L) and comprising a radially outer portion (11) and a radially inner portion (12) made of a first vulcanized elastomeric material, said radially outer portion comprising: a1) a central annular portion (L1) arranged astride the equatorial plane (X-X) of the tyre (1) and made of a first vulcanized elastomeric material; and a2) a pair of lateral annular portions (L2, L3) arranged on opposite sides of the central annular portion (L1) with respect to the equatorial plane (X-X) of the tyre (1) and made of a second vulcanized elastomeric material. In the tyre (1), the ratio R1 between the dynamic elastic modulus E' of the second vulcanized elastomeric material measured at 10 Hz frequency and 23°C and the dynamic elastic modulus E' of the first vulcanized elastomeric material measured at 10 Hz frequency and 23°C is comprised between 0.6 and 1.2. In the tyre (1), the ratio R2 between the loss factor of the second vulcanized elastomeric material measured at 10 Hz frequency and 70°C and the tandelt of the first vulcanized elastomeric material measured at 10 Hz frequency and 23°C is comprised between 0.6 and 1.2.

A motorcycle tire (1) includes crown blocks (4) including first crown blocks (6) and second crown blocks (7). Each of the first crown blocks (6) has a heel-side edge (11) formed in a V-shape and inclined at an angle (α1) of 10 degrees or less on both axial sides with respect to the tire axial direction. A total number of the first crown blocks (6) is 30% or more of a total number of the crown blocks (4). A first ground contacting surface shape (6a) of each of the first crown blocks (6) has a maximum length (W1) in the tire axial direction from 60% to 70% of a tread width. Each of the second crown blocks (7) has a second ground contacting surface shape (7a) having a maximum length (WC) in the tire axial direction smaller than the maximum length (W1) of the first ground contacting surface shape (6a).

To provide a tire that can improve dry grip performance. [Solution] A tire having a tread portion, wherein the tread portion is composed of a rubber composition comprising a rubber component, a filler, and a plasticizer, the rubber component comprising styrene-butadiene rubber, the filler comprising carbon black, and the plasticizer comprising a resin component, wherein when the radius of curvature of the tread portion at the tire equator is R (mm) and the tanδ peak temperature of the rubber composition is T (°C), T is 25.0 or greater and R / T is less than 10.0.

A scooter is provided, including a wheel(s), a gas tank, and a pressure gauge. Each wheel includes a hub and a tire. The gas tank is disposed on the hub. The pressure gauge includes a pressure measurement assembly, a valve assembly, and a pressure control assembly. The pressure measurement assembly is connected with a lumen of the tire to detect a target pressure of air in the lumen. The valve assembly is connected with the lumen and the gas tank and includes a second gas channel. The pressure control assembly is electrically connected with the pressure measurement assembly and the valve assembly, is in communication connection with a control unit of the scooter, and is configured to periodically transmit the target pressure to the control unit and control the valve assembly to open or close the second gas channel based on a target instruction sent by the control unit.

The invention relates to the field of tire pressure detection, in particular to motorcycle instrument Bluetooth tire pressure detection equipment with an operating system and a method, which comprises a sleeve, a butt joint ferrule movably sleeved on the inner side wall surface of the top of the sleeve in a threaded manner, and a closed top cover detachably mounted on the outer side surface of the top of the butt joint ferrule, a butt joint sleeve is fixedly installed on the inner side wall face of the bottom of the closed top cover, and a tire pressure monitor is fixedly installed on the inner side wall face of the top of the butt joint sleeve. A threaded ferrule on the inner side wall face of a matching sleeve is in threaded connection with a valve core of a tire in a sleeving mode for threaded butt joint, a butt joint sleeve on the inner side wall face of a closed top cover is connected into the valve core in a sleeving mode, and meanwhile an extrusion strip on the inner side wall face of the butt joint sleeve is matched to extrude and swing an ejector rod in the valve core; and meanwhile, the tire pressure monitor in the butt joint sleeve is used for collecting, transferring and treating the air pressure in the tire.

The invention relates to a tyre (10) having a tread (15) comprising a main composite material (30) having an integrally molded construction and comprising a thermoplastic polymer matrix and a fabric reinforcement component. The invention also relates to a method for manufacturing such a tyre, said method comprising hot-pressing a multi-layer assembly comprising a hot-meltable fabric part and a non-hot-meltable fabric part.

An off-road motorcycle tyre comprises a tread band having a central annular portion extending astride of an equatorial plane (X-X) of the tyre (1) and comprising: - a plurality of circumferentially consecutive central blocks (15) arranged astride of the equatorial plane (X-X) and having a first width (LI) in the axial direction; - a plurality of circumferentially consecutive first lateral blocks (20) arranged next to the central blocks (15) and having a second width (L2) in the axial direction; - a plurality of circumferentially consecutive second lateral blocks (60) arranged next to the central blocks (15) on the opposite side with respect to said plurality of first lateral blocks (20) and having said second width (L2) in the axial direction; wherein the ratio between said second width (L2) and said first width (LI) is comprised between 0.65 and 1.3.

Provided is a technology for inhibiting the occurrence of uneven wear at shoulder-side edges of blocks in a motorcycle tire having a block pattern. A motorcycle tire (100) includes plural blocks (11) and (12) that are arranged on a tread ground-contact surface. In a tire widthwise cross-section of a tread portion (1), when regions obtained by bisecting a tread half-width region measured along the tire surface from a tire equator CL to a tread ground-contact end TE are each defined as a tread center portion Tc and a tread shoulder portion Ts, a middle block (12) among the plural blocks, whose outer wall surface (12A) on the tire width-direction outer side is positioned in the tread shoulder portion Ts, is configured such that an upper end portion is chamfered only for the outer wall surface (12A) and a chamfered part (12B) is thereby formed on the middle block (12).

Tire whose tread is formed entirely or partially of a unit-molded composite material. The present invention relates to a tire (10) comprising a tread (15), said tread comprising a main composite material (30) which is of unit-molded construction and which comprises a thermoplastic polymer matrix and a textile reinforcement assembly. The present invention also relates to a method for manufacturing such a tire comprising the thermocompression of a multilayer assembly including a heat-fusible textile portion and a non-heat-fusible textile portion. Figure for the abstract: Fig. 1.

The present invention provides a pair of motorcycle tires capable of improving the turning performance of the vehicle. The tire pair is composed of a front tire (2) and a rear tire. Based on the contour line (TLf) of the tread surface (16) of the front tire (2) and the contour line of the tread surface of the rear tire, a center arc index (Ac), an intermediate arc index (Am), and a shoulder arc index (As) are obtained. In the tire pair, the intermediate arc index (Am) is equal to or greater than the center arc index (Ac), and the shoulder arc index (As) is less than the center arc index (Ac).

A tyre (1 ) for motorcycle wheels is described comprising an equatorial plane (X- X) free from transversal grooves and a tread band (8) extending according to an axial development (L), wherein the tread band (8) comprises, in a plan development thereof, two lateral annular portions (L2, L3) arranged on opposite sides with respect to said equatorial plane (X-X) and each comprising a first lateral annular sub-portion (L2', L3'), proximal with respect to the equatorial plane (X-X), and a second lateral annular sub-portion (L2", L3"), distal with respect to the equatorial plane (X-X). In the tread band (10), a plurality of transversal grooves (12) is defined, which are formed in the lateral annular portions (L2, L3), each having an axial extension equal to at least 30% of the axial half-development (L / 2) of the tread band (10) and a first directrix (g') forming with the equatorial plane (X-X) an angle (alpha) having a minimum value (alpha'a) comprised between 15° and 50° at an end (12'a) proximal to the equatorial plane (X-X). The transversal grooves (12) form a circumferential succession of transversal ribs (13) extending up to the axial ends of the tread band (10) and having a first portion (13') having an increasing width moving away from the equatorial plane (X-X) in a first annular sector (S) proximal to the equatorial plane (X-X).

To provide a two-wheeled motor vehicle tire where straight line stability at high-speed traveling is compatible with turning performance.SOLUTION: A two-wheeled motor vehicle tire 1 includes a tread reinforcement layer 7. The tread reinforcement layer 7 includes a belt layer 8 and a band layer 9. The band layer 9 includes a band ply 9A where band codes 9A are arrayed at an angle θ1 relative to a tire circumferential direction. The belt layer 8 includes: an inner side belt ply 8A which is arranged so as not to overlap with the band ply 9A at both sides of the band ply 9A in a tire axial direction; and an outer side belt ply 8B which is arranged so as to overlap with the band ply 9A outside of the band ply 9A in a tire radial direction. The inner side belt ply 8A includes an inner side belt cord 8a which is arrayed at an angle θ2 different from the angle θ1 relative to the tire circumferential direction, and the outer side belt ply 8B includes an outer side belt cord 8b which is arrayed at an angle θ3 different from the angle θ1 and the angle θ2 relative to the tire circumferential direction.SELECTED DRAWING: Figure 1

The present invention provides a motorcycle tire for uneven ground travel with superior grip at low load. The tire has a block pattern. The block pattern includes a plurality of connected block pairs. Each connected block pair has two blocks (28), and a tie (30) sandwiching and connecting the blocks (28). The tie (30) has a rear ground contact side end (40) having a height equal to or less than that of the blocks (28), and a front ground contact side end (38) having a height less than that of the rear ground contact side end (40).

A motorcycle tire 1 comprises a tread portion 2 provided with a belt layer 7 and a radially outer band layer 8. The belt layer 7 comprises a first belt ply 11 on a carcass 6 and a second belt ply 12 thereon. The band layer is made of a spirally wound band cord and has a developed width smaller than that of the belt layer. In a meridian cross-section of the tire mounted on a standard wheel rim at an internal pressure of 10 kPa: the radius of curvature Rc of the ground contacting surface of the tire in its crown region is less than 95% of the cross-sectional width of the tire; and the radius of curvature Rc is smaller than a radius of curvature Rb of the ground contacting surface in shoulder regions.

To provide a two-wheel automobile tire pair which can improve turning performance of a vehicle.SOLUTION: A tire pair comprises a front tire 2 and a rear tire. A center arc index Ac, a middle arc index Am and a shoulder arc index As are obtained based on a contour line TLf of a tread surface 16 of the front tire 2 and a contour line of a tread surface of the rear tire. In the tire pair, the middle arc index Am is larger than the center arc index Ac, and the shoulder arc index As is larger than the middle arc index Am.SELECTED DRAWING: Figure 3

The invention provides a motorcycle tire and a motorcycle tire kit capable of improving initial flexibility, intermediate stability and transient characteristics. A motorcycle tire (1) comprising a tread rubber (2G). The tread rubber (2G) includes a crown rubber (10) disposed in a crown region (Cr), and a pair of shoulder rubbers (11) extending to a pair of tread edges (Te), respectively. The complex elastic modulus (Ec *) of the crown rubber (10) is smaller than the complex elastic modulus (Es *) of the shoulder rubber (11). When a standard load is applied to the tire (1) in a standard state and the camber angle is 0 DEG, 10 DEG, and 40 DEG, and the ground contact areas are defined as A0, A10, and A40, respectively, the following expressions are satisfied: 0.3 < = (Ec * A0) / (Es * A40) < = 1.05, and 0.95 < = A10 / A0 < = 1.05.

This invention relates to an inflation valve for use with a tubeless tyre, the inflation valve comprising a ball valve. The ball valve optionally comprises a housing within which is provided a ball, the ball being formed with a through-hole, the ball being rotatable between an open position in which air and / or sealant is allowed to flow through the through-hole, and a closed position in which air and / or sealant is substantially prevented from flowing through the through-hole.

To provide a tire that can improve grip performance when driving on uneven terrain. [Solution] A tire having a plurality of blocks on the tread portion, wherein the tread portion is made of a rubber composition containing rubber components, the land ratio of the tread portion is L (%), the tanδ of the rubber composition at 70°C is 70°Ctanδ, and the modulus of the rubber composition at 300% stretch at 75°C is 75°CM 300 When expressed as (MPa), L is less than 30 and 75℃M 300 The ratio is 5.0 or higher, and L, 70°C tanδ, and 75°C M 300 A tire that satisfies the following equation (1). (L 0.5 ×70℃ tanδ) / 75℃ M 300 ≥0.13 ···(1)