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Tire with seats of unequal diameters and reverse axial offset in an inflated state

Patent Number: 8109309
Publication Date: 2012-02-07
Inventors: Grolier, Nicolas; Janin, Nicolas

A tire is provided that includes a crown with a mid-plane S, two sidewalls, a first bead, of diameter Φ₁, intended to be positioned on the outboard side of a vehicle, and a second bead, of diameter Φ₂, intended to be positioned on the inboard side of a vehicle, such that Φ₁>Φ₂. When the tire is mounted on its working rim and inflated to its nominal pressure, the mid-plane S of the crown is axially offset towards the first bead relative to a ...

Tension-based non-pneumatic tire

Patent Number: 8109308
Publication Date: 2012-02-07
Inventors: Anderson, Brian; Tercha, Mike; Manesh, Ali; Ceranski, Fidelis; Meliska, Brian J.

A non-pneumatic tire for supporting a load by working in tension comprising a generally annular inner ring, a generally annular outer ring, and an interconnected web having a plurality of web elements and comprising a plurality of generally polygonal openings. Web elements are sized, oriented and comprised of a material that facilitates buckling when subjected to a compressive load. By buckling, those elements in a deformed portion of the tire between a wheel and a footprint region where ...

Pneumatic tire with tread having protrusions on bottom of grooves

Patent Number: 8109307
Publication Date: 2012-02-07
Inventor: Oyama, Toshiro

A pneumatic tire includes a plurality of protrusions on a bottom of each of the grooves. The height of the protrusion is variable in a profile of the protrusion in a circumference direction of the pneumatic. The protrusion has at least one peak portion that protrudes away from a center of the pneumatic tire. The pneumatic tire further includes a connection member between the protrusion and an adjacent one of the lands, the connection member having a first end toward the land and a second ...

Pneumatic tire

Patent Number: 8104525
Publication Date: 2012-01-31
Inventor: Fukumoto, Touru

A pneumatic tire comprises a tread-reinforcing band made of at least one spirally wound cord, wherein the band cord consists of materially identical high-strength high-modulus organic filaments, and the band cord is formed by first twisting each of filament bunches, subjecting the first twisted bunches to a dip-and-stretch treatment, and then twisting the treated bunches together, whereby the load-elongation curve of the band cord comprises a low-modulus zone and a high-modulus zone whose ...

Tension-based non-pneumatic tire

Patent Number: 8104524
Publication Date: 2012-01-31
Inventors: Anderson, Brian; Manesh, Ali; Tercha, Michael; Ayodeji, Olukemi; Meliska, Brian J.; Ceranski, Fedelis

A non-pneumatic tire for supporting a load by working in tension comprising a generally annular inner surface, a generally annular outer ring, and an interconnected web having a plurality of web elements and comprising a plurality of generally polygonal openings. Web elements are sized, oriented and comprised of a material that facilitates buckling when subjected to a compressive load. By buckling, those elements in a deformed portion of the tire between a hub and a footprint region where ...

Pneumatic tire and process for its manufacture

Patent Number: 8104523
Publication Date: 2012-01-31
Inventors: De Cancellis, Pierluigi; Noto, Rodolfo; Lo Presti, Gaetano; Lacagnina, Claudio; Losi, Piero

A pneumatic tire has a carcass structure having at least one carcass ply and at least one annual reinforcing structure associated with the carcass ply, a tread band made of an elastomeric material at a radially outer position with respect to the carcass structure, a belt structure interposed between the carcass structure and the tread band and a pair of axially opposite side walls on the carcass structure, wherein the tread band has i) at least one first sector, radially extending, ...

Pneumatic tire with circumferential main grooves having protrusions

Patent Number: 8100159
Publication Date: 2012-01-24
Inventor: Fujioka, Tsuyoshi

In the pneumatic tire in which not less than three main grooves 1 extending in the tire circumferential direction R are formed and ribs 2 are formed by the main grooves 1, upper edges 11 of the main groove 1 when the tire is new extend in a linear manner in the tire circumferential direction R, the bottom 12 of the main groove 1 extends in a zigzag manner in the tire circumferential direction R, the sidewalls 13 of the main groove ...

Off-road tire with tread having blocks and recesses

Patent Number: 8100158
Publication Date: 2012-01-24
Inventor: Sueishi, Makoto

An off-road tire (1) comprises a tread portion (2) provided with blocks (10, 11) forming a sea area (8) therearound. The sea area (8) is provided in the bottom (14) thereof with recesses (13), wherein the recesses (13) are arranged circumferentially of the tire and each extend axially of the tire, and the depth (d) of each of the recesses (13) is gradually increased towards its center (13a), whereby the enveloping ...

Rubber composition for tire and pneumatic tire using the same

Patent Number: 8100157
Publication Date: 2012-01-24
Inventors: Ichikawa, Naoya; Neon, Gan Seng; Yin, Lee Siang; Sakaki, Toshiaki; Terakawa, Katsumi; Hattori, Takayuki

A rubber composition for a tire, in which a specific tackifier is compounded, and tackiness and various physical properties are improved, compared with compounding a petroleum resin or a terpene resin, is provided. The rubber composition for a tire comprising an alkyd resin and a pneumatic tire using the same. It is preferable that a material derived from a resource other than petroleum, particularly, a material derived from animal and/or vegetable, and more particularly, a material derived ...

Tire for heavy vehicle

Patent Number: 8096335
Publication Date: 2012-01-17
Inventor: Bondu, Lucien

A heavy vehicle tire comprising at least four working plies formed of reinforcing elements which, from one ply to the next, cross one another, and comprising at least one protective ply. The tire is supplemented on each side of the circumferential mid-plane by a single working half-ply the reinforcing elements of which make an angle greater than 30° with the circumferential direction, the half-ply being radially on the inside of and adjacent to the radially outermost continuous working ...