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US 11,446,964 B2Granted
Tyre
AssigneeSumitomo Rubber Industries, Ltd.
InventorKoichi Nakajima
Life of this patent
Estimating the term…
Abstract
A tyre includes a tread portion having a tread surface provided with grooves extending in a tyre axial direction. The grooves each include an opening formed on the tread surface, a minimum portion located inwardly in a tyre radial direction of the opening and having a groove width being locally minimum, and a maximum portion located inwardly in the tyre radial direction of the minimum portion and having a groove width being locally maximum in a region inwardly in the tyre radial direction of the opening.
Claims14
A tyre comprising:
- a tread portion having a tread surface provided with grooves extending in a tyre axial direction;
- and
- each groove comprising
- an opening formed on the tread surface,
- a minimum portion located inwardly in a tyre radial direction of the opening and having a groove width being locally minimum, and
- a maximum portion located inwardly in the tyre radial direction of the minimum portion and having a groove width being locally maximum in a region inwardly in the tyre radial direction of the opening, wherein
- each groove comprises a groove bottom portion located innermost in the tyre radial direction, and a minimum distance in the tyre radial direction between the minimum portion and the maximum portion is greater than a minimum distance in the tyre radial direction between the maximum portion and the groove bottom portion,
- a groove width of each groove varies in the tyre radial direction continuously from the opening to the maximum portion,
- a groove width of the opening is greater than the groove width of the maximum portion, and
- each groove is a lateral groove in communication with a tread edge of the tread portion, wherein
- a region from the opening to the minimum portion of each groove is formed by a pair of inclined surfaces inclined with respect to the tyre radial direction, and
- the pair of the inclined surfaces is a curved surface.
9 more elements
A tyre comprising:
- a tread portion having a tread surface provided with grooves extending in a tyre axial direction;
- and
- each groove comprising
- an opening formed on the tread surface,
- a minimum portion located inwardly in a tyre radial direction of the opening and having a groove width being locally minimum, and
- a maximum portion located inwardly in the tyre radial direction of the minimum portion and having a groove width being locally maximum in a region inwardly in the tyre radial direction of the opening, wherein
- each groove comprises a groove bottom portion located innermost in the tyre radial direction, and a minimum distance in the tyre radial direction between the minimum portion and the maximum portion is greater than a minimum distance in the tyre radial direction between the maximum portion and the groove bottom portion,
- a region from the opening to the minimum portion of each groove is formed by a pair of inclined surfaces inclined with respect to the tyre radial direction,
- the pair of the inclined surfaces is a curved surface,
- a groove width of the opening is greater than the groove width of the maximum portion, and
- each groove is a lateral groove in communication with a tread edge of the tread portion.
8 more elements
A tyre comprising:
- a tread portion having a tread surface provided with grooves extending in a tyre axial direction;
- and
- each groove comprising
- an opening formed on the tread surface,
- a minimum portion located inwardly in a tyre radial direction of the opening and having a groove width being locally minimum, and
- a maximum portion located inwardly in the tyre radial direction of the minimum portion and having a groove width being locally maximum in a region inwardly in the tyre radial direction of the opening, wherein
- each groove comprises a groove bottom portion located innermost in the tyre radial direction, and a minimum distance in the tyre radial direction between the minimum portion and the maximum portion is greater than a minimum distance in the tyre radial direction between the maximum portion and the groove bottom portion,
- a region from the opening to the minimum portion of each groove is formed by a pair of inclined surfaces inclined with respect to the tyre radial direction,
- the pair of the inclined surfaces is a curved surface, and
- a minimum distance in the tyre radial direction between the minimum portion and the opening is smaller than a minimum distance in the tyre radial direction between the minimum portion and the maximum portion.
7 more elements
A tyre comprising:
- a tread portion having a tread surface provided with grooves extending in a tyre axial direction;
- and
- each groove comprising
- an opening formed on the tread surface,
- a minimum portion located inwardly in a tyre radial direction of the opening and having a groove width being locally minimum, and
- a maximum portion located inwardly in the tyre radial direction of the minimum portion and having a groove width being locally maximum in a region inwardly in the tyre radial direction of the opening, wherein
- each groove comprises a groove bottom portion located innermost in the tyre radial direction, and a minimum distance in the tyre radial direction between the minimum portion and the maximum portion is greater than a minimum distance in the tyre radial direction between the maximum portion and the groove bottom portion,
- a groove width of each groove varies in the tyre radial direction continuously from the opening to the maximum portion,
- a groove width of the opening is greater than the groove width of the maximum portion, and
- each groove is a lateral groove in communication with a tread edge of the tread portion, wherein
- a region from the opening to the minimum portion of each groove is formed by a pair of inclined surfaces inclined with respect to the tyre radial direction, and
- the pair of inclined surfaces includes one or more planes and a curved surface.
9 more elements
A tyre comprising:
- a tread portion having a tread surface provided with grooves extending in a tyre axial direction;
- and
- each groove comprising
- an opening formed on the tread surface,
- a minimum portion located inwardly in a tyre radial direction of the opening and having a groove width being locally minimum, and
- a maximum portion located inwardly in the tyre radial direction of the minimum portion and having a groove width being locally maximum in a region inwardly in the tyre radial direction of the opening, wherein
- each groove comprises a groove bottom portion located innermost in the tyre radial direction, and a minimum distance in the tyre radial direction between the minimum portion and the maximum portion is greater than a minimum distance in the tyre radial direction between the maximum portion and the groove bottom portion,
- a groove width of each groove varies in the tyre radial direction continuously from the opening to the maximum portion,
- a groove width of the opening is greater than the groove width of the maximum portion, and
- each groove is a lateral groove in communication with a tread edge of the tread portion, wherein
- the pair of inclined surfaces each is one or more planes, and
- the pair of inclined surfaces each consists of two planes.
9 more elements
Dependencies are inferred from the claim text.