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US 11,396,211 B2Granted
Stud pin and studded tire
AssigneeThe Yokohama Rubber Co., Ltd.
InventorMasakazu Mori
Life of this patent
Estimating the term…
Abstract
A stud pin includes a tip, a body portion that supports the tip, and a lower flange connected to the body portion at an end on an opposite side to the end surface. A profile shape of the lower flange and a body profile shape of the body portion are anisotropic shape. The flange profile shape includes four or more first flange protrusion portions projecting toward the longitudinal direction and two second flange protrusion portions projecting toward the lateral direction. The body profile shape includes four or more first body protrusion portions projecting toward the lateral direction and two second body protrusion portions projecting toward the longitudinal direction.
Claims11
A stud pin installable in a tire, comprising:
- a tip comprising an end surface that comes into contact with a road surface;
- a body portion that supports the tip so that the tip projects from an end surface on one side of the body portion;
- and
- a lower flange connected to an end of the body portion on an opposite side to the end surface;
- a flange profile shape of the lower flange as viewed from an arrangement direction of the tip, the body portion, and the lower flange being an anisotropic shape in which, of imaginary rectangles circumscribing the flange profile shape, a first smallest rectangle with a shortest side of its four sides being smallest and/or a second smallest rectangle with a longest side of its four sides being smallest comprise short sides and long sides of different lengths;
- a body profile shape of the body portion as viewed from the arrangement direction having an anisotropic shape in which a length of the body profile shape in a longitudinal direction parallel with the long sides is different from a length of the body profile shape in a lateral direction parallel with the short sides;
- the flange profile shape comprising
- four or more first flange protrusion portions projecting toward the longitudinal direction,
- two second flange protrusion portions projecting toward the lateral direction, and
- two first flange recess portions curved toward a centroid of the flange profile shape and disposed between the first flange protrusion portions;
- and
- the body profile shape comprising
- four or more first body protrusion portions projecting toward the lateral direction, and
- two second body protrusion portions projecting toward the longitudinal direction, the second body protrusion portions disposed facing the first flange recess portions at a position on a body profile shape centroid side of the first flange recess portions in a plan view of the lower flange and the body portion from the arrangement direction, wherein
- longitudinally most protruding tip portions of the first flange protrusion portions are disposed further outward in the lateral direction from the centroid of the flange profile shape than portions of the tip positioned furthest outward in the lateral direction from the centroid of the flange profile shape.
12 more elements
A studded tire installed with a stud pin, comprising:
- a tread portion installed with a stud pin, the stud pin comprising:
- a tip comprising an end surface that comes into contact with a road surface;
- a body portion that supports the tip so that the tip projects from an end surface on one side of the body portion;
- and
- a lower flange connected to an end of the body portion on an opposite side to the end surface;
- a flange profile shape of the lower flange as viewed from an arrangement direction of the tip, the body portion, and the lower flange being an anisotropic shape in which, of imaginary rectangles circumscribing the flange profile shape, a first smallest rectangle with a shortest side of its four sides being smallest and/or a second smallest rectangle with a longest side of its four sides being smallest comprise short sides and long sides of different lengths;
- a body profile shape of the body portion as viewed from the arrangement direction having an anisotropic shape in which a length of the body profile shape in a longitudinal direction parallel with the long sides is different from a length of the body profile shape in a lateral direction parallel with the short sides;
- the flange profile shape comprising
- four or more first flange protrusion portions projecting toward the longitudinal direction,
- two second flange protrusion portions projecting toward the lateral direction, and
- two first flange recess portions curved toward a centroid of the flange profile shape and disposed between the first flange protrusion portions;
- and
- the body profile shape comprising
- four or more first body protrusion portions projecting toward the lateral direction, and
- two second body protrusion portions projecting toward the longitudinal direction, the two second body protrusion portions disposed facing the first flange recess portions at a position on a body profile shape centroid side of the first flange recess portions in a plan view of the lower flange and the body portion from the arrangement direction, wherein
- longitudinally most protruding tip portions of the first flange protrusion portions are disposed further outward in the lateral direction from the centroid of the flange profile shape than portions of the tip positioned furthest outward in the lateral direction from the centroid of the flange profile shape,
- the stud pin being installed with the longitudinal direction or the lateral direction facing a tire circumferential direction.
14 more elements
Dependencies are inferred from the claim text.