2422results about "Non-skid devices" patented technology

The invention comprises an improved non-pneumatic tire, and particularly a shear layer for a non-pneumatic tire wherein the shear layer comprises an elastomeric composition that includes a metal salt of a carboxylic acid. The shear layer preferably comprises a dienic elastomeric composition that includes a metal salt of a carboxylic acid. In one embodiment of the invention, the metal salt of the carboxylic acid is zinc diacrylate or zinc dimethacrylate. In one embodiment of the invention, the metal salt of the carboxylic acid is zinc diacrylate or zinc dimethacrylate, and a peroxide curative agent is employed.

An apparatus and method for transporting a payload over a surface is provided. A vehicle supports a payload with a support partially enclosed by an enclosure. Two laterally disposed ground-contacting elements are coupled to at least one of the enclosure or support. A motorized drive is coupled to the ground-contacting elements. A controller coupled to the drive governs the operation of the drive at least in response to the position of the center of gravity of the vehicle to dynamically control balancing of the vehicle.

In a non-pneumatic tire having a support structure body supporting a load from a vehicle, the support structure body (SS) comprises an inner annular portion (1) an intermediate annular portion (2) provided concentrically in an outer side of the inner annular portion (1), an outer annular portion (3) provided concentrically in an outer side of the intermediate annular portion (2), a plurality of inner coupling portions (4) coupling the inner annular portion (1) and the intermediate annular portion (2) and being independent in a circumferential direction, and a plurality of outer coupling portions (5) coupling the outer annular portion (3) and the intermediate annular portion (2) and being independent in a circumferential direction.

A tire tread comprising a rubber composition based on (phr: parts by weight per hundred parts of elastomer):

• • (i) a diene elastomer;
  • (ii) more than 50 phr of an inorganic filler as reinforcing filler;
  • (iii) between 2 and 15 phr of an (inorganic filler/diene elastomer) coupling agent;
  • (iv) between 1 and 10 phr of a methylene acceptor, and
  • (v) between 0.5 and 5 phr of a methylene donor.

This tread has, after mechanical running-in of the tire for which it is intended (“auto-accommodation”), a rigidity gradient which increases radially from the surface towards the inside of the tread. Use of such a tread for the manufacturing or recapping of tires. Tires comprising a tread according to the invention, in particular of the snow or ice type (“winter” tires).

A non-pneumatic tire comprising side cavities that are staggered with respect to laterally opposing side cavities, and laterally extending tread grooves that are in substantial radial alignment with the cavities. In another embodiment, the invention is to a tire comprising side ribs that are staggered with respect to laterally opposing side ribs, and laterally extending tread grooves that are substantially offset relative to the side ribs. Also provided are processes for making such tires and to off-the-road (OTR) vehicles employing such tires.

A tire has an axis of rotation. The tire includes two sidewalls extending radially outward and a tread disposed radially outward of the two sidewalls and interconnecting the two sidewalls. The tread includes a main portion comprising a first compound and a reinforcing structure comprising a second compound having reinforcing short fibers oriented between −20 degrees to +20 degrees to a circumferential direction of the tread. The main portion of the tread includes at least one circumferential groove separating circumferential ribs. Each circumferential groove has two sides and a base therebetween. The reinforcing structure includes a layer of the second compound secured to the sides of each circumferential groove.

Sipes extending from one end of a block to the central area of the block and sipes extending from the other end of the block to the central area of the block (sipes 24, 28, 32 and 36) are inclined in directions opposite to each other. The sipes extending from one end of the block and the sipes extending from the other end of the block intersect a common line extending along the circumferential direction of the tire. Due to this structure, the number of portions of the sipes, which portions are located in the central area of the block, is made greater than that in the peripheral area of the block. The density of sipes is thus increased in the central area of a block where water tends to form when driving on ice, for improving braking and traction properties on ice.

A method for forming a polymer including a sulfur-containing functional group, the method comprising introducing a sulfur-containing initiator defined by the formula

with conjugated diene monomer and optionally copolymerizable monomer within a polymerization medium and allowing the sulfur-containing initiator to initiate the polymerization of the conjugated diene monomer and the optional copolymerizable monomer, where R¹ is a monovalent organic group, R² is a divalent organic group, R³ is a divalent organic group or a bond, and a is an integer from 1 to about 5.

A rubber composition for a tire tread, or a pneumatic tire using the same in a tire tread portion, wherein the tread portion contains a diene rubber; and carbon black and/or silica; and a gas-encapsulated thermoplastic resin and, further, a short fiber, a hard particle and/or a liquid polymer, and wherein the gas-encapsulated thermoplastic resin particle is obtained by expanding, upon heating. at a temperature of an expansion starting temperature thereof or more, prior to vulcanization of a rubber, a thermally expansible thermoplastic resin particle, which comprises a thermoplastic resin having an expansion starting temperature of from 70° C. to less than 120° C. and having a heat resistance to withstand vulcanization of rubber, followed by vulcanization to uniformly disperse the gas-encapsulated thermoplastic resin in the rubber, or a short fiber, a hard particle and/or a liquid polymer is further compounded to give a high frictional force on ice.

A heavy-duty tire comprises a tread portion provided with at least three circumferentially continuously extending ribs divided by at least two circumferential grooves extending straight in the tire circumferential direction, wherein the ribs have side edges adjacent to the circumferential grooves; each of the side edges is provided with edge sipes at intervals in the tire circumferential direction; each of the edge sipes extends parallel with the tire axial direction from the adjacent circumferential groove and terminates in the rib; each of the edge sipe has an axial length in a range of not less than 5% but not more than 15% of the axial width of the rib, a thickness in a range of not less than 0.3 mm but not more than 1.0 mm and a depth in a range of not less than 50% but not more than 100% of the depth of the circumferential groove; and the total number of the edge sipes per tire is in a range of from 4 to 8 times the value of the tire diameter in millimeter.

Rubber mixtures which contain an organosilane of the general structure ¹R²R³Si—R⁴—Z (I), wherein R¹, R² and R³ independently of one another are H, (C₁-C₄)alkyl, (C₁-C₄)alkoxy or halogen and the number of alkyl groups is ≧1; R⁴ is a linear or branched (C₁-C₁₈)alkylidene group; and Z=H, halogen, SCN, SH or S_x—R⁴—SiR¹R²R³, where x is 2 to 10. The rubber mixtures are useful in molding compositions particularly for tires and tire treads.

An opaque article having a surface and substantially asymmetric striae extending along the surface. A portion of the striae reside in a first area and have an orientation. Another portion of the striae reside in a second area and have an orientation substantially opposite the striae in the first area. The first area striae and the second area striae create an optical contrast therebetween at a wide range of viewing angles and illumination angles. The opaque article can be a tire. The striae can reside at numerous locations on the tire, including, for example, the sidewall, tread ribs or blocks, and stone ejectors.

A tire has a tread and a pair of opposing shoulders. In the first sidewall, a series of extension blocks creates a pair of concentric rings. In the second sidewall, a different configuration of extension blocks may be present. The second sidewall has alternating extension blocks where one of the blocks has a portion that is located radially inward of the other block.

Both a mold blade for forming sipes and the sipe so formed in a tire tread element have three dimensional portions. In the formed sipe, the three dimensional portion creates a constant interlocking of the opposing sipe faces. The blade and the sipe have at least one row of alternating polygonal shaped recesses and protrusions. The recesses and protrusions terminate in a vertex; the vertex has a planar, or two-dimensional, configuration that is parallel to either-the blade centerline or the sipe centerline.

A vehicle tire includes a tread portion provided with a plurality of blocks and at least one circumferential rib, the circumferential rib having a first side face facing a circumferential groove and a second side face, and first side face being corrugated to form furrows and ridges which are arranged alternatively in the circumferential direction and extend radially of the tire, the corrugation having an amplitude Lb in the range of 0.5 to 2.0 mm, the circumferential rib being provided with sipes extending thereacross so that each sipe has an end opened in one of the furrows on the first side face and an end opened in said second side face, and the spacings La of the sipes being in the range of 2.0 to 5.0 mm. Each of the sipe has a zigzag middle part.

The invention relates to a rubber tire composed of carbon black reinforced rubber carcass and having a rubber tread which is quantitatively reinforced with silica and which, in turn, has a thin, integral, rubber outer cap on its outer surface which contains a quantitative amount of carbon black. In one aspect, said outer cap, sometimes referred to herein as an outer top cap, extends across the outer surface of the tread which is normally intended to be ground contacting and in an alternative aspect, the outer top cap extends only over the outer portion, namely the peripheral edges, of said tread surface intended to be ground contacting. The outer, carbon black reinforced, rubber tread top cap connects with at least one other carbon black reinforced rubber component of the tire in a manner to provide a path of reduced electrical resistance from said outer tread top cap to the bead portion of the tire carcass and, therefore, such a path from the vehicle to the road surface.

Vehicular pneumatic tire having an asymmetric tread formed in relation to a circumference of a running surface and process of making vehicular pneumatic tire. The vehicular pneumatic tire includes an outside region that includes an outside shoulder block row and an outside circumferential groove, an inside region that includes an inside shoulder block row and an inside circumferential groove, and a center region that is laterally delimited by the outside circumferential groove and the inside circumferential groove. A plurality of transverse grooves are arranged within the inside shoulder block row, and the plurality of transverse grooves further are arranged to extend into the center region. No more than about one-half of the plurality of transverse grooves are arranged to at least nearly entirely traverse the center region and are oriented to form an angle to a circumferential equator line of no more than approximately 30° over at least one-third of their longitudinal extensions. The process includes forming an outside region to include an outside shoulder block row and an outside circumferential groove, forming an inside region to include an inside shoulder block row and an inside circumferential groove, and laterally delimiting a center region with the outside circumferential groove and the inside circumferential groove. The process further includes arranging a plurality of transverse grooves within the inside shoulder block row and to extend into the center region. No more than one half of the plurality of transverse grooves are arranged to at least nearly entirely traverse the center region and are oriented to form an angle to a circumferential equator line of no more than approximately 30° over at least one-third of their longitudinal extensions.

A pneumatic tire including five land portions Q1, Q2, Q3, Q4, Q5 in a tread surface 1 by providing four main grooves G1, G2, G3, and G4 in a ground contact region R of the tread surface 1, wherein positions and groove widths of the main grooves G1, G2, G3, and G4 are specified together with only the land portion Q1 positioned outermost on a vehicle outer side when mounted on a vehicle being formed into a block row, and the other land portions Q2, Q3, Q4, and Q5 being formed into ribs, and a groove area proportion of the tread surface 1 is larger on a vehicle inner side than the vehicle outer side with a tire equator CL and center lines of the land portions Q2, Q3, Q4 as boundaries.