716results about "Non-inflatable tyres" patented technology

The present invention relates to an elastomeric laminate comprising at least two adjacent layers, wherein: the rubber composition constituting the first layer is based on 20 phr to 100 phr of at least one copolymer comprising ethylene units and 1,3-diene units of formula CH2=CR-CH=CH2, the ethylene units in the copolymer representing more than 50 mol% of the copolymer monomer units, and the symbol R represents a hydrocarbon chain having 3 to 20 carbon atoms, 0 phr to 80 phr of at least one diene elastomer having a diene unit weight concentration greater than 50%, 10 phr to 100 phr of a plasticizing system comprising at least one plasticizing resin having a glass transition temperature higher than 20°C and / or at least one plasticizer which is liquid at 23°C, and a reinforcing filler, and a crosslinking system; the rubber composition constituting the second layer is based on a diene elastomer having a diene unit weight concentration greater than 50% and a crosslinking system. The present invention also relates to a rubber article, in particular a pneumatic or non-pneumatic tire, comprising such a laminate.

To provide a non-pneumatic tire which can suppress deterioration of uniformity by providing a communication device.SOLUTION: A non-pneumatic tire includes a wheel member 2, a ring member 3 attached to the wheel member, a spiral reinforcing layer 4 formed by winding an element wire body spirally on an outer circumferential surface of the ring member, the element wire body having one cord or a plurality of parallely arranged cords buried in a coated boy, a tread member 5 and a communication device 6 retained by the ring member. The spiral reinforcing layer contains such an overlap region X1 that one end part and the other end part of the element wire body overlap in a tire circumferential direction and, when the region in the tire circumferential direction is divided into first, second, third and fourth quadrants Y1 to Y4, and it is defined that a center position cp in the tire circumferential direction of the overlap region corresponds to a center position in the tire circumferential direction of the first quadrant, the communication device is retained by the ring member so as to be contained in the third quadrant.SELECTED DRAWING: Figure 8

To provide a non-pneumatic tire whose communication device can be prevented from being damaged when a vehicle runs.SOLUTION: A non-pneumatic tire according to the present invention comprises: a wheel member that can be mounted on an axle; a ring member attached to the wheel member; a spiral reinforcement layer 4 formed by winding a strand body 20 spirally on an outer peripheral surface of the ring member, the strand body having one cord or a plurality of parallely arranged cords buried in a coated body; a tread member surrounding the outside in a tire radial direction of the spiral reinforcement layer; and a communication device 6 arranged in a tire circumferential direction adjacently to an end face 20a at one side of the strand body.SELECTED DRAWING: Figure 7

A non-pneumatic tire defining axial, radial, and circumferential directions. The tire includes an annular lattice structure extending radially between an inner circumferential edge and an outer circumferential edge. The lattice structure exhibits topological polarization, with the inner circumferential edge being stiffer than the outer circumferential edge. The topological polarization includes asymmetry in mechanical response to opposing forces applied to the inner and outer circumferential edges. The lattice structure which provides topological polarization endows the tire with localized softness along the outer radius, which enables extreme absorption of asperities, without transferring significant forces to the axle. In some embodiments, the lattice structure further exhibits topological protection, including the topological polarization characteristics being maintained upon experiencing wear at the outer circumferential edge. In some embodiments, the lattice structure is, or is akin to, a Kagome lattice arrangement.

A wheel assembly to be coupled to a hub of a vehicle may include an inner rim to be coupled to the hub of the vehicle, an outer rim surrounding the inner rim. A rigid cover ring may be coupled to the outer rim and extend radially inward toward the inner rim. Gas springs may be operatively coupled between the inner and outer rims to provide a gas suspension for relative movement between the inner and outer rims. Fastener assemblies fasten the rigid cover ring to the outer rim, fastening each gas spring to the outer rim, or fastening each gas spring to the outer rim. Each fastener assembly may include a fastener and a pair of indicator-lock washers carried by the fastener. Each indicator-lock washer may have respective sloped surfaces slidably engaging one another to permit relative rotation so that loosening from a fully tightened position exposes a gap.

A wheel assembly to be coupled to a hub of a vehicle may include an inner rim to be coupled to the hub of the vehicle, an outer rim surrounding the inner rim, and gas springs operatively coupled between the inner and outer rims to provide a gas suspension for relative movement between the inner and outer rims. The wheel assembly may also include tread assemblies carried by the outer rim. Fastener assemblies may be configured to perform fastening at least one tread assembly to the outer rim, fastening each gas spring to the outer rim, or fastening each gas spring to the outer rim. Each fastener assembly may include a fastener, and a pair of indicator-lock washers carried by the fastener. Each indicator-lock washer may have respective sloped surfaces slidably engaging one another to permit relative rotation so that loosening from a fully tightened position exposes a gap therebetween.

An airless tire includes a plurality of spokes having elasticity and provided radially from an outer circumferential side of a wheel coupled to a vehicle toward an inner circumferential side of a tread that comes into contact with a road surface; and an intermediate ring having elasticity and provided to connect to the plurality of spokes between the wheel and the tread. Each of the spokes having a bent portion between an end portion on the wheel side and an end portion on the tread side, the bent portion is bending with respect to a direction connecting these end portions. The intermediate ring are connected to the bent portion. Each of the spokes has a plurality of bent portions, and the bent portions each have a minor angle that is formed to decrease from the end portion on the wheel side to the end portion on the tread side.

The invention discloses an active and passive combined variable stiffness bionic non-pneumatic tire and an active variable stiffness control method thereof. The variable stiffness bionic non-pneumatic tire comprises a hub, an adjusting module, M buffer spokes, a rim and a tread, the buffering spoke can provide good passive variable stiffness characteristics based on load change; the adjusting module can actively control displacement of the sliding rods in the bionic spokes in the radial direction of the tire so as to actively change the vertical rigidity of the tire. According to the invention, the damping and bearing capacity is good, and the maneuverability and damping capacity of the tire can be further optimized by actively controlling the rigidity change.

The invention discloses a wheel-foot vehicle combining a wheel type mode and a foot type mode. The wheel-foot vehicle comprises bionic legs, a hydraulic driving system, non-pneumatic tires and an anti-rolling vehicle frame. The bionic legs comprise thighs and shanks to enhance obstacle crossing ability, the hydraulic driving system provides strong power and sufficient displacement for the three-stage hydraulic columns, the non-pneumatic tires are polyurethane flexible spoke type tires to reduce maintenance, and the anti-rolling frame guarantees safety of the vehicle and passengers. The designed wheel-foot vehicle aims at improving the trafficability and maneuverability of complex terrains, through an innovative wheel-foot conversion mechanism, the capacity of fast wheel-type running on a flat road surface and foot-type obstacle crossing on a rugged ground is achieved, and high adaptability and operation flexibility are achieved.

A tubeless tire insert comprising: an annular body having shock absorbing characteristics; a positioning system configured to vary a mean inner diameter of the insert, wherein the insert has a mean inner diameter X when the tire is being installed on the rim; and the insert has a mean inner diameter Y when the tire is installed on the rim, where X is greater than Y.

The application relates to a deformable wheel with non-pneumatic load bearing intended to equip a vehicle for rolling under extreme conditions such as those encountered on the Moon and on Mars, comprising a hub, an annular tread intended to be in contact with the soil, positioned around the hub which is concentric therewith and comprising a layer of composite material coated with at least one protective layer, and a plurality of metal cables whose outer diameter is comprised between 0.2 mm and 5 mm, each cable connecting the hub to the tread while being fixed, on the one hand by an external end to the tread, and on the other hand by an internal end to the hub by an elastic member making it possible to modulate the radial stiffness of the cables, each elastic member being associated with an abutment able to limit its deformation.

The present invention discloses a non-inflatable tire, which comprises a tread, an inner ring and multiple groups of bumps. The multiple groups of bumps are radially distributed between the tread and the inner ring, and each group of bumps is hollow inside. Adjacent groups of bumps are integrally connected to form an annular cavity; a concave portion is formed at the connection position between adjacent groups of bumps, and the concave portion forms a tightened inner eaves corresponding to the inner wall of the annular cavity. The top contour of the inner wall of each group of bumps correspondingly forms an extended outer eaves of the annular cavity, and the bump wall of each group of bumps forms an arc-shaped extension surface integrally connected between the tightened inner eaves and the extended outer eaves; a tire wall connected between the tread and the inner ring is formed between the tightened inner eaves of the annular cavity and the top of the outer wall of the bump. Therefore, by arranging multiple groups of bumps between the tread and the inner ring, the width of the tire wall is increased, and multiple elastic load-bearing units that are closely connected to each other and support each other strongly are formed, thereby improving the overall load-bearing capacity, impact resistance and driving comfort of the tire.

A tubeless tire insert comprising: an annular body having shock absorbing characteristics; a positioning system configured to vary a mean inner diameter of the insert, wherein the insert has a mean inner diameter X when the tire is being installed on the rim; and the insert has a mean inner diameter Y when the tire is installed on the rim, where X is greater than Y.

A toy car tire includes a tire main body and a filler core. The tire main body includes an inner cavity and a first opening. The inner cavity is surrounded and formed by a side wall of the tire main body, and the first opening is in communication with the inner cavity. The filler core is inserted into the inner cavity through the first opening. The filler core is configured for filling the inner cavity. Therefore, the filler core is capable of filling the inner cavity of the tire main body to support the tire main body, making the tire main body fuller and less prone to deformation. Moreover, compared with an inflatable tire, since the inner cavity is filled with the filler core, the toy car tire is not afraid of being punctured. Even if punctured, the tire main body of the tire is still full.

A non-pneumatic tire includes a lower ring having a first diameter and an upper ring having a second diameter. The upper ring is substantially coaxial with the lower ring. A support structure connects the lower ring to the upper ring. The support structure is made up of a plurality of spokes. The support structure is arranged and configured so that adjacent spokes of the plurality of spokes contact one another upon the occurrence of a high impact event.

There is provided an additive manufacturing method intended for producing a carcass (24) of an airless tire (1), the additive manufacturing method employing an additive manufacturing machine (20) producing a plurality of layers of structural elements (25) of the carcass (24) in any XY plane perpendicular to the axis of rotation of the carcass (24) by depositing strips of fusible printing material, the tape portion of each structural element (25) has, in any XY plane, a portion that is inserted into the tape portion of each adjacent structural element (25).

The present invention relates to an inflation-free explosion-proof tire based on rapid prototyping technology, wherein the tire comprises a carcass, wherein a plurality of air pockets arranged at intervals are arranged in the carcass; the air pockets are sequentially arranged along the circumference of the tire, and are arranged in a "one"-shaped multi-layer arrangement in the axial direction of the carcass; the air pockets are solidified and formed by rapid prototyping technology in a high-pressure inert gas atmosphere, and the air pockets are filled with high-pressure inert gas during forming. The tire of the present invention has excellent damping characteristics, inflation-free, low noise, and explosion-proof performance, greatly reduces the risk of tire blowout, maximizes the safety of personnel and vehicles, and has strong versatility and designability.

The present invention discloses a non-pneumatic tire and its design method. The tire successively includes a tread pattern, a tread, a V-shaped support structure, and a tire inner ring. The V-shaped support structure is formed by arranging V-shaped supports in sequence and connecting them end to end. Each V-shaped support consists of two upper sides, two lower sides, and a height. The upper side is connected to the tread, and the lower side is connected to the tire inner ring. Half of the supplementary angle of the included angle between the two lower sides is the inclination angle of the V-shaped support. The extension line of the height passes through the geometric center of the tire. In the non-pneumatic tire of the present invention, the cross-sectional area of the radial section is equal everywhere, so the radial material distribution of the tire is uniform. When different points of the tire touch the ground, the force conditions and displacement deformations of the tire are similar, so the sinking amounts are similar and the driving stability of the vehicle is relatively high. The design method of the present invention initially determines the tire width W, aspect ratio AR, and tire inner diameter D according to vehicle requirements, market tire specifications, etc., and then calculates in combination with strength requirements. The design method can be applied to tires for various purposes.

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.

A non-pneumatic and method of making a non-pneumatic tire. The non-pneumatic tire includes a lower ring having a first diameter and an upper ring having a second diameter greater than the first diameter. The upper ring is substantially coaxial with the lower ring. A support structure extends between the lower ring and the upper ring. The support structure includes a first face and a second face opposite the first face, a first axial edge and a second axial edge. The first and second axial edges space the first face from the second face. At least one of the first edge and the second edge may have a geometry that provides the support structure with a nonrectangular cross section. At least one of the first face and the second face may have a surface roughness of less than 25 microns. The support structure may be free from orthogonal axial edges.

A non-pneumatic tire includes an annular inner ring, an annular outer ring, and a support structure extending from the annular inner ring to the annular outer ring. The support structure includes a plurality of spokes, webbing, cells, or other open-sided support structure. The tire includes a bump stop. The bump stop includes an inner member radially extending from a radially outer surface of the annular inner ring. The inner member has a radially outer surface facing a radially inner surface of the annular outer ring. The bump stop includes an outer member radially extending from a radially inner surface of the annular outer ring. The outer member has a radially inner surface facing a radially outer surface of the annular inner ring.

A deformable wheel with non-pneumatic load bearing intended to equip a vehicle for rolling under extreme conditions such as those encountered on the moon and on Mars, includes a hub, a laminated annular strip including a plurality of concentric ferrules which are assembled with the interposition of interposing layers each composed of a material whose Young's modulus is 600,000 to 1,000 times lower than that of the ferrules, and a plurality of metal cables. Each cable connects the hub to the laminated strip while being fixed, on the one hand by an external end to the laminated strip, and on the other hand by an internal end to the hub by means of an elastic member making it possible to modulate the radial stiffness of the cables. Each elastic member is associated with an abutment able to limit its deformation.

The tire of the toy car and the toy car have the advantages that the tire comprises the tire body, the tire body comprises the inner cavity and the first opening, the inner cavity is defined by the side wall of the tire body, and the first opening is communicated with the inner cavity; the filling inner core is arranged in the inner cavity through the first opening, the filling inner core is used for filling the inner cavity, the tire main body is provided with a drainage and ventilation hole, and the drainage and ventilation hole is communicated with the inner cavity, so that the inner cavity of the tire main body can be filled with the filling inner core to support the tire main body, and the tire main body is fuller and not prone to deformation; moreover, compared with an inflatable tire, the inner cavity is filled with the filling inner core, so that the tire of the toy car is not afraid of being punctured, the tire main body of the punctured tire is still full, and the advancing of the toy car is not influenced; moreover, when the toy car runs on rainy days or wades into water, water permeating into the inner cavity of the tire main body can be discharged out of the inner cavity through the drainage and ventilation holes of the tire main body, so that the dead weight of the tire is reduced, and the running speed of the toy car is increased.

A phase transformational cellular material, including a plurality of bistable cells, each respective bistable cell operationally connected to at least one other respective bistable cell. Each bistable cell enjoys a first stable phase and a second stable phase. The first stable phase is a first geometric configuration and the second stable phase is a second geometric configuration different from the first geometric configuration. An energy transaction is required to shift each respective cell between stable phases. A mechanical energy transaction is required to shift from the first to the second phase, while a thermal energy transaction is required to shift from the second to the first phase.

A spoke (12) for a non-pneumatic tire (10) is provided that has a nose (28) that engages a first panel (16) and a second panel (18). A first foot (20) is carried by the first panel and has a first foot first concave surface (46) and an adhesion deflector (48). A second foot (22) is present and is carried by the second panel. A reinforcement layer (24) engages the first foot first concave surface and the adhesion deflector.

There is provided an additive manufacturing method intended for producing a carcass (24) of an airless tire (1), the additive manufacturing method employing an additive manufacturing machine (20) producing a plurality of layers of structural elements (25) of the carcass (24) in any XY plane perpendicular to the axis of rotation of the carcass (24) by depositing strips of fusible printing material, the belt portion of each structural element (25) is continuous and has a portion that is inserted into the belt portion of each adjacent structural element (25) in any XY plane.

The invention relates to the technical field of tires, in particular to a non-pneumatic tire which comprises a rim, a spoke and a tread, the rim, the spoke and the tread are coaxially arranged, the spoke is arranged between the rim and the tread and comprises an outer buffer layer, an inner buffer layer and an asymmetric spoke assembly, the inner surface of the inner buffer layer is fixedly connected with the outer surface of the rim, and the inner surface of the inner buffer layer is fixedly connected with the outer surface of the rim. The outer surface of the outer buffer layer is fixedly connected with the inner surface of the tread, the asymmetric spoke assembly is arranged between the outer buffer layer and the inner buffer layer, a plurality of first clamping blocks are arranged on the outer surface of the rim, a plurality of first clamping grooves are formed in the inner buffer layer, the first clamping grooves are connected with the first clamping blocks in a clamping mode, and the first clamping blocks extend into the asymmetric spoke assembly. Through the design of the asymmetric spokes, the first clamping blocks are effectively avoided, meanwhile, the stress distribution of the tire is optimized, the performance of the tire is remarkably improved, the tire can be moderately deformed when being impacted, and the impact resistance of the tire is enhanced.

A tubeless tire insert comprising: an annular body having shock absorbing characteristics; a positioning system configured to vary a mean inner diameter of the insert, wherein the insert has a mean inner diameter X when the tire is being installed on the rim; and the insert has a mean inner diameter Y when the tire is installed on the rim, where X is greater than Y.

A non-pneumatic tire (100) is provided that has a rim (104) with an axis extending therethrough. An annular support (103) extends outward from the rim in a radial direction. A tread (101) is present that has a surface, and a farthest outer axial extent (804) located at a terminal end of the tread in the lateral direction. An annular beam (200) is located between the annular support (103) and the tread (101) in the radial direction. The annular beam (200) has a reinforcement portion (300) that has a plurality of reinforcing elements. The reinforcing element closest to the farthest outer axial extent in the lateral direction is at a width W1 to the farthest outer axial extent in the lateral direction. W1 is at least 8 millimeters.