Systems and methods for improving the uniformity of a tire by identifying the effects of tooling elements used during tire manufacture on tire uniformity, such as effects resulting from building drum elements, form elements, mold elements, and other tooling elements, are provided. More particularly, a tooling signature of a tooling element can be identified by analyzing a plurality of uniformity waveforms measured for a set of tires manufactured using the tooling element. The tooling signature can be analyzed and used to modify tire manufacture to improve the uniformity of a tire.

Methods and systems for improving the uniformity of a tire are provided. More specifically, one or more characteristics of a composite uniformity parameter can be determined from harmonic magnitudes associated with a plurality of harmonics of the composite uniformity parameter. For instance, a range of a composite uniformity parameter and/or a distribution of amplitudes of a composite uniformity parameter for a set of tires can be determined from harmonic magnitudes associated with selected harmonics of the composite uniformity parameter. According to example aspects of the present disclosure, the one or more characteristics of the composite uniformity parameter can be determined using Weibull distributions of the harmonic magnitudes. Once identified, the one or more characteristics can be used to modify tire manufacture to improve tire uniformity.

Methods and systems for improving the uniformity of a tire are provided. More particularly, one or more parameters of a measurement process harmonic contributing to uniformity measurements performed for a tire can be identified. The measurement process harmonic can be a process harmonic effect associated with the acquisition of uniformity measurements of a tire, such as a process harmonic effect associated out-of-roundness of a road wheel used to load a tire during uniformity measurement in a uniformity measurement machine. The measurement process harmonic can result solely from the acquisition of uniformity measurements and may not contribute to actual tire non-uniformity. Once identified, the one or more parameters associated with the measurement process harmonic can be used to correct the uniformity measurements of the tire to account for the measurement process harmonic. Tire manufacture can then be modified to improve tire uniformity based on the corrected measurements.

Particular embodiments of the invention comprises a composition for reducing weight imbalances, force variations, and/or vibrations in a tire-wheel assembly, the composition comprising a first plurality of particulate for positioning within the tire-wheel assembly, where each particle in the first plurality of particulate is characterized as having low energy absorption capabilities, and a second plurality of particulate for positioning within the tire-wheel assembly, where each particle in the second plurality of particulate is characterized as having elevated energy absorption capabilities. Additional embodiments of the invention comprise a method for reducing force imbalances, force variations, and/or vibrations in a tire-wheel assembly, which includes the steps of providing a tire-wheel assembly and placing into a pressurization chamber of said tire-wheel assembly a composition as contemplated in any embodiment or combination of embodiments suggested herein.

Methods and systems for improving tire uniformity through identification of characteristics of one or more candidate process effects are provided. The magnitudes of process harmonics associated with one or more candidate process effects can be identified by combining uniformity measurements for a set of tires to achieve an enhanced resolution for a sampling of the process harmonic. The enhanced resolution approach can combine uniformity measurements for a set of a plurality of tires that are slightly offset from one another to generate a composite process harmonic sampling. In particular, the composite process harmonic sampling can be generated by aligning the uniformity measurements for each tire in the set of tires based on the azimuthal location of the maximum magnitude of the process harmonic on each tire. The magnitude of the process harmonic can then be determined using the composite process harmonic sampling.

Device and method for analysis of tyres are presented. The device includes a support frame, a flange, and first/second image acquisition systems. According to one aspect, the first acquisition system is two-dimensional and includes a first camera having a first optical axis, a first focal plane, a first focal point, and a first depth of field, and a first illumination system that illuminates around the first focal point. According to another aspect, the second image acquisition system is three-dimensional and includes a second camera having a second optical axis, a second focal plane, and a second depth of field, and a second illumination system. A translation plane, substantially orthogonal to the first optical axis, is defined by the first focal point, and an intersection between the second optical axis and the second depth of field.

Methods and systems for improving tire uniformity through identification of uniformity attributes, such as process harmonics are provided. More particularly, uniformity measurements acquired according to a non-uniform sampling pattern can be obtained and analyzed to estimate one or more process harmonics (e.g. the magnitude of the process harmonic). The non-uniform sampling pattern can specify the acquisition of uniformity measurements in a varying or irregular manner about one or more revolutions of the tire. For instance, the non-uniform sampling pattern can specify a random spacing between data points. The uniformity attributes estimated from the uniformity measurements can be used to modify the manufacture of tires to improve tire uniformity.

Systems and methods for correcting uniformity of a cured tire using ablation of material along a plurality of tracks along the bead portion of the tire are provided. An ablation pattern can be determined to correct for a uniformity parameter for multiple tracks along a bead portion of a tire. The ablation pattern for each track can be analyzed to determined direct address commands for implementing the ablation pattern using an ablation device. The direct address commands can be determined according to an adjustment process to improve cycle time for the ablation of a tire. The adjustment process can be operable to more closely align azimuthal positions of ablation segments specified by direct address commands for different tracks along the bead of the tire.

Provided are: a tire including: a tire frame; and a reinforcing metal cord member that is wound at least on the outer circumference of the tire frame, wherein at least a portion of the reinforcing metal cord member is coated with a coating composition via an adhesion layer that contains a polyamide-based adhesive and has a melting point of from 160 C. to 200 C., the coating composition containing at least one thermoplastic material selected from polyamide-based thermoplastic resins having a melting point of from 160 C. to 240 C. and polyamide-based thermoplastic elastomers having a melting point of from 160 C. to 240 C.; and a method of producing the same.

A system and method for reducing the magnitude of one or more harmonica of one or more uniformity parameters in a cured tire involves selective removal of tire material at one or more track/area locations along first and second bead profiles. Selective removal may occur via ablation at the bead seat, low flange and/or high flange zones to correct for a selected number of harmonic of such parameters as radial, lateral and tangential force variation. Ablation pattern are calculated and implemented on first and second tire beads to achieve desired levels of force reduction at selected angular locations (within the expanse from 0-360 degrees along each tire bead). Ablation patterns may be calculated for implementation at fixed or varied tire rotational speeds and/or fixed or varied levels of laser power.