B60C9/2003

Crown reinforcement for a tire of a tractor-type agricultural vehicle

A tire (1) for an agricultural vehicle comprises a working reinforcement (2), radially on the inside of a tread (3) and radially on the outside of a carcass reinforcement (4), the working reinforcement (2) comprising a multilayer component made up of a radial stack of at least two working layers (21, 22), and aims to improve the endurance thereof. The working reinforcement (2) is made up of a circumferential spiral winding of at least one turn of the multilayer component, the first and second circumferential ends (211, 221; 212, 222) of each working layer (21, 22) are circumferentially offset from one another, and the respective first circumferential ends (211, 221) of two consecutive working layers (21, 22) are likewise circumferentially offset from one another.

Pneumatic tire
11518199 · 2022-12-06 · ·

A pneumatic tire includes a pair of bead portions each having a respective bead core therein, a carcass extending between the bead portions and including a carcass ply that includes a main portion extending between the bead cores and a pair of turn-up portions turned up around the bead cores, and a pair of bead reinforcing layers being disposed outward in the tire axial direction of the turn-up portions so as to cover outermost ends in a tire radial direction of the turn-up portions. An outer surface of at least one of the bead portions is provided with a recess row including a plurality of recesses spaced in a tire circumferential direction, and in the at least one of the bead portions, an outermost end of the bead reinforcing layer is located outwardly in the tire radial direction of outermost ends of the plurality of recesses.

TIRE CORD, MANUFACTURING METHOD THEREOF AND TIRE COMPRISING SAME
20220372672 · 2022-11-24 ·

The present invention relates to a tire cord having excellent durability while being thin in thickness, a manufacturing method thereof and a tire comprising the same.

TIRE COMPRISING AN OPTIMIZED ARCHITECTURE
20220363094 · 2022-11-17 ·

A tire (10) for a vehicle comprises a radially outermost working layer (41) which comprises at least one undulation (412) in line with a central rib (251) of the tread (2). The undulation (412) is radially on the outside of the points of the working layer (41) in line with the bottom face (243) of the circumferential groove (24) closest to the undulation (412) and has an amplitude of at least 1 mm. The undulation (412) is vertically in line above at least one local reinforcing layer (6) comprising reinforcing elements that are mutually parallel and make with the circumferential direction (XX′) of the tire an angle of which the absolute value is at most equal to 5°.

GRC (glass-resin composite) monofilament

A monofilament made of glass-resin composite has improved properties in compression, in particular at high temperature, and comprises glass filaments embedded in a crosslinked resin. The glass transition temperature of the resin is equal to or greater than 190° C. The elongation at break of the monofilament, measured at 23° C., is equal to or greater than 4.0%. The initial tensile modulus of the monofilament, measured at 23° C., is greater than 35 GPa. The real part of the complex modulus of the monofilament, measured at 190° C. by the DMTA method, is greater than 30 GPa. Pneumatic or non-pneumatic tires are reinforced with such a composite monofilament.

Tire with Belt Package Reinforcement Element
20230035934 · 2023-02-02 ·

Tyre comprising a carcass, a belt package and a tread; said tyre comprising at least a reinforcement net made of a weaved textile material having a number of meshes ranging from 3 to 20, and wherein the threads are oriented between 25° and 65° relative to a longitudinal axis (X) of the tyre; said reinforcement net being arranged at least in the area of a centre of the tread and positioned inside the belt package or between the belt package and the tread; said weaved textile material having an elongation at break equal to or greater than 10%; said reinforcement net having a shorter transverse extension than the one of the belt package.

PNEUMATIC AVIATION TIRE
20230064368 · 2023-03-02 ·

A tire includes a carcass, a tread disposed radially outward of the carcass, a sidewall including a shoulder extends toward the tread, and a reinforcing structure positioned radially between the carcass and the tread. The reinforcing structure includes a plurality of belts extending axially toward the shoulder and an overlapping spiral wound strip positioned at a radially outermost portion of the reinforcing structure. The overlapping spiral wound strip includes a uniform width having groups of four first cords with a single second cord therebetween. The first cords include a hybrid construction and the second cords include a single material construction.

PNEUMATIC TIRE

A pneumatic tire includes a ply having a plurality of cords each having an average cord diameter D, and a sidewall rubber having a loss tangent tan δ The plurality of cords each includes a plurality of filaments twisted together, the plurality of filaments each having an outer diameter d. The plurality of cords each has a ratio D/d of the average cord diameter D to the outer diameter d being equal to or more than 28. The ratio D/d and the loss tangent tan δ of the sidewall rubber satisfy the following formula;


(tan δ)/(D/d)*1000≤5.5.

Protective reinforcement comprising differentiated layers for a pneumatic tire for a heavy-duty civil engineering vehicle

A radial pneumatic tire for a heavy-duty civil engineering vehicle aims to reduce the risk of tread separation of the pneumatic tire, during driving on sharp rocks, while ensuring good resistance to cracking of the crown reinforcement. The pneumatic tire has a protective reinforcement with two protective layers, the radially innermost protective layer having elastic metal reinforcements with a diameter D1 which are axially distributed according to an axial pitch P1, and the radially outermost protective layer has elastic metal reinforcements with a diameter D2 which are axially distributed according to an axial pitch P2. In the tire the following relations are satisfied:
D1>D2
P1>P2
P1>=1.2*D1 and P2>=1.2*D2
2.5<=(D1*P1)/(D2*P2)<=5.

VEHICLE TIRE HAVING A BELT BANDAGE
20220314697 · 2022-10-06 · ·

The present invention relates to a vehicle tire comprising a belt bandage, wherein the belt bandage comprises strength members, wherein the strength members comprise hybrid cords arranged parallel to one another within the ply, and wherein the hybrid cords each contain at least one yarn made of polyethylene terephthalate (PET) and at least one yarn made of polyamide.

According to the invention the PET of the yarn of the hybrid cord of the belt bandage is recycled PET (rPET).