Tire stud provided with recesses configured to improve its retention in the tire

摘要

Stud (30) for a tire (10), the tire comprising a tread (20) made of rubber mix, the stud having an axis (A-A) and two axial ends and comprising: a first part (60) configured to come into contact with the ground when the stud is fitted to the tire and the tire is rolling along the ground, this first part being positioned at one of the axial ends of the stud; a head (70) configured to anchor the stud into the tread of the tire, the head being positioned at the other axial end of the stud; and a body (80) connecting the said first part and the head of the stud, the mean diameter of the body being smaller than the mean diameter of the head of the stud, these diameters being measured at right angles to the axis of the stud; in which the head comprises at least one recess (100) opening onto the surface of the head, the recess being configured to be filled with rubber mix of the tread so as to provide additional anchorage for the stud in the tread.

主权项

1. A stud for a tire, the tire comprising a tread made of rubber mix, the stud having an axis and two axial ends and comprising:
a first part configured to come into contact with the ground when the stud is fitted to the tire and the tire is rolling along the ground, said first part being positioned at one of the two axial ends of the stud; a head configured to anchor the stud into the tread of the tire, said head being positioned at the other axial end of the stud and having no central recess along said axis; and a body connecting said first part and said head of the stud, the mean diameter of said body being smaller than the mean diameter of said head of the stud, these mean diameters being measured at right angles to the axis of the stud, wherein said head comprises at least one lateral recess opening onto a surface of said head, said at least one lateral recess being configured to be filled with rubber mix of the tread so as to provide additional anchorage for the stud in the tread, wherein said at least one lateral recess opening onto a surface of said head is located in regions laterally spaced from the axis of the stud, and wherein the combined surface area of the cross sections of said at least one lateral recess in said surface of said head is greater than or equal to 15% and less than or equal to 35% of the maximum cross section of said head at right angles to the axis of the stud.