Patent application number | Description | Published |
20130153100 | TIRE WITH TREAD HAVING IMPROVED WET TRACTION - The present invention provides a tire tread having a configuration and material properties that improve wet traction. In particular, the tread has a specified minimum threshold for chamfer density and a maximum level of complex shear modulus for the material that constitutes the tread in order to optimize the road friction coefficient (p) a tire tread experiences during a wet braking event. This results in better wet traction and a shorter stopping distance during the braking event. | 06-20-2013 |
20140150940 | TIRE WITH TREAD HAVING VARIABLE SIPE DENSITY AND ROUND CROWN - This invention relates generally to tires having treads that have a configuration and/or properties for maintaining hydroplaning performance, dry braking performance and improved wear resistance, and, more specifically, to a tire that has a tread that N has a variable sipe density, i.e a higher sipe density in its central portion and a lower sipe density in its shoulder portions, as well as a round crown with a predetermined inflated profile droop. Another embodiment of the present invention further includes the addition of a member that provides more structural stiffness across the crown of a tire, such that better compromises between hydroplaning, dry braking, and wear performances can be obtained. | 06-05-2014 |
20140230980 | TIRE WITH TREAD HAVING IMPROVED SNOW AND DRY TRACTION - This invention relates generally to tires having treads that have a configuration and/or properties for providing suitable snow and dry traction, and, more specifically, to a tire that has a tread that has a maximum value for sipe density in the contact patch, a minimum value for lateral groove density in the contact patch, and a minimum value for the longitudinal contact surface ratio. In certain embodiments, the pitch length of pitches or repeating units of tread geometry along the circumferential direction of the tire is within a certain range and the tread depth is below a specified value. Tires with treads having a configuration that falls within these design parameters exhibit a desirably good level of snow and dry traction. | 08-21-2014 |
20140251519 | TIRE TREAD WITH IMPROVED SNOW/DRY TRACTION - Tire treads having one or more repeating pitches, each repeating pitch comprising individual pitches having tread blocks with sipes formed therein and each pitch having a pitch length of between 15 mm and 35 mm. Such treads may also have a weighted average sipe density D | 09-11-2014 |
20150047763 | WET AND SNOW TRACTION DESIGN FOR A TIRE TREAD AND SOLUTION FOR PULL UNDER TORQUE THEREFOR - A design for a high-speed tire tread is provided that gives improved performance in both water and snow conditions. The tread region of the tire uses transversely-oriented grooves that each extend across the width of the tread region. There are no grooves or other tread features that provide substantial fluid communication between the transversely-oriented grooves. Features are also provided that decrease the pull under torque associated with such a design. | 02-19-2015 |