摘要:
A tire for two-wheeled motorcycles of the present invention includes a first carcass layer folded back along circumferential surfaces of bead cores, a second carcass layer folded back along circumferential surfaces of turnbacks of the first carcass layer 5, a belt layer wound spirally along a tire circumferential direction and an intermediate carcass layer provided between the first and second carcass layers 7 and in an inner circumferential side of the belt layer and extending close to a tire maximum width.
摘要:
The invention relates to a tire for a two-wheeled motorized vehicle and more particularly a motorcycle. Such a tire comprises at least one carcass-type reinforcement structure, formed of reinforcement elements, anchored on either side of the tire to a bead whose base is intended to be mounted on a rim seat, each bead being extended radially towards the outside by a sidewall, the sidewalls meeting up radially towards the outside with a tread, and comprising under the tread a crown reinforcement structure consisting of at least one layer of circumferential reinforcement elements; according to the invention, in accordance with the profile of the tire in a radial plane, said layer of circumferential elements is at least in part radially to the inside of the part of at least one carcass-type reinforcement structure radially to the outside of the two points of tangency of the curvilinear abscissa of the carcass-type reinforcement structure with perpendiculars to the axis of rotation and said circumferential reinforcement elements are distributed in the transverse direction with a variable pitch.
摘要:
The present invention is a crown-stiffening underlay structure comprised of a flat strip of elastomeric material reinforced with essentially inextensible cords. The cord-reinforced flat strip is wrapped helically around the green tire carcass prior to blowup into the characteristic toroidal shape of a tire carcass. In one embodiment, the underlay structure is disposed between breakers and the radial ply structure. In another embodiment, the underlay is disposed between the radial ply structure and the innerliner. In another embodiment, the afore described underlay structure has an additional and structurally contiguous beam made of elastomeric material.
摘要:
A pneumatic tire comprising a carcass of radially disposed plies of inextensible reinforcing cords, surmounted by a restricting band of circumferentially disposed plies of reinforcing cords of predetermined stretchability intermediate the radially disposed plies, the tire being formed in flat band form on a conventional building drum.
摘要:
A tire for a two-wheeled motorized vehicle includes a carcass-type reinforcement structure, having reinforcement elements anchored on each side to a bead. Each bead extends radially by a sidewall, which meets up radially with a tread. Under the tread is a crown reinforcement structure including at least one working layer of working reinforcement elements, and a layer of circumferentially oriented reinforcement elements disposed radially to the outside of the carcass-type reinforcement structure. Over the profile of the tire in a radial plane, radially to the outside of the two points of tangency of the curvilinear abscissa of the carcass-type reinforcement structure with perpendiculars to the axis of rotation, at least one layer of working reinforcement elements is at least partially radially to the inside of the part of the carcass-type reinforcement structure radially to the outside of the two points of tangency.
摘要:
The invention relates to a tire for a two-wheeled motorized vehicle and more particularly a motorcycle. Such a tire comprises a carcass-type reinforcement structure, formed of reinforcement elements and anchored on each side of the tire to a bead whose base is intended to be fitted on a rim seat, each bead being extended radially towards the outside by a sidewall, the sidewalls meeting up radially towards the outside with a tread, and comprising under the tread a crown reinforcement structure consisting of at least one layer of reinforcement elements known as a working layer. According to the invention, said crown reinforcement structure further comprises a layer of circumferential reinforcement elements radially to the outside of the carcass-type reinforcement structure and, over the profile of the tire in a radial plane, in its part radially to the outside of the two points of tangency of the curvilinear abscissa of the carcass-type reinforcement structure with perpendiculars to the axis of rotation at least one layer of working reinforcement elements is at least partially radially to the inside of the part of the carcass-type reinforcement structure radially to the outside of the two points of tangency of the curvilinear abscissa of the carcass-type reinforcement structure with perpendiculars to the axis of rotation.
摘要:
A runflat pneumatic tire has a tread stiffening member radially inward of the tread 12. The tire has a deflected section height H30 under load at 30 psi inflation and a deflected section height H0 at 0 psi wherein the deflection D30 are equal to or less than D0−D30 and the net contact area at 0 psi has a perimeter dynamic contact shape of at least U shaped or rectangular.
摘要:
A method of imparting structural rigidity to the ply structure of a pneumatic tire which includes determining the existing geometrical designs formed by the various superimposed cords of the adjacent and subadjacent individual plies, in order to enable the addition of one or more plies to the in existing designs in an area where the tire exhibits the greatest susceptibility to failure, or to an existing area where the resulting forces exerted by the individual cords are desired to be changed whereupon various desirable stability characteristics are imparted to the tire. This method of changing the geometrical patterns formed by the individual cord paths of the tire plies enables the design of nondirectional, unidirectional, symmetrical, and asymmetrical tires to be carried out, as well as imparting various degress of directional stability to a tire. The method of the present invention enables the fabrication of light weight, cooler running tires having optimum arranged cord paths and an absence of redundant structure within the tire.
摘要:
The present invention is a crown-stiffening underlay structure comprised of a flat strip of elastomeric material reinforced with essentially inextensible cords. The cord-reinforced flat strip is wrapped helically around the green tire carcass prior to blowup into the characteristic toroidal shape of a tire carcass. In one embodiment, the underlay structure is disposed between breakers and the radial ply structure. In another embodiment, the underlay is disposed between the radial ply structure and the innerliner. In another embodiment, the afore described underlay structure has an additional and structurally contiguous beam made of elastomeric material.