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US 11,780,268 B2Granted
Tyre
AssigneeSumitomo Rubber Industries, Ltd.
InventorNaofumi Kitani
Life of this patent
Estimating the term…
Abstract
A tyre includes a tread portion being provided with a pair of shoulder circumferential grooves on an outer surface thereof and a tread reinforcing layer disposed in the tread portion. The tread reinforcing layer includes a circumferential belt layer having a plurality of first reinforcing cords oriented along a tyre circumferential direction. The circumferential belt layer includes a pair of axially spaced first circumferential belt plies extending in radially inner regions of the pair of shoulder circumferential grooves. The pair of first circumferential belt plies is arranged apart from one another at a distance L equal to or more than 20 mm in a tyre axial direction.
Claims16
A tyre comprising:
- a tread portion being provided with a pair of shoulder circumferential grooves on an outer surface thereof and a tread reinforcing layer disposed in the tread portion,
- wherein
- the tread reinforcing layer comprises
- a circumferential belt layer having a plurality of first reinforcing cords oriented at an angle equal to or less than 5 degrees with respect to a tyre circumferential direction, and
- an inclined belt layer comprising a plurality of inclined belt plies having a plurality of second reinforcing cords arranged at an inclination angle in a range from 10 to 35 degrees with respect to the tyre circumferential direction,
- the circumferential belt layer comprises
- a pair of axially spaced first circumferential belt plies extending in radially inner regions of the pair of shoulder circumferential grooves, and
- a pair of axially spaced second circumferential belt plies that is superimposed on the pair of first circumferential belt plies via one or more inclined belt plies of the plurality of inclined belt plies,
- the pair of first circumferential belt plies is arranged apart from one another at a distance L equal to or more than 20 mm in a tyre axial direction,
- a pair of axially outermost ends of the pair of first circumferential belt plies is located axially inwardly of a pair of axially outermost ends of the inclined belt layer,
- each of the pair of second circumferential belt plies is located outwardly in the tyre axial direction with respect to a respective one of groove centerline positions of the pair of shoulder circumferential grooves, and
- the pair of second circumferential belt plies is located axially outwardly of inner regions of the pair of shoulder circumferential grooves such that the pair of second circumferential belt plies does not overlap with the inner regions of the pair of shoulder circumferential grooves.
9 more elements
A tyre comprising:
- a tread portion being provided with a pair of shoulder circumferential grooves on an outer surface thereof and a tread reinforcing layer disposed in the tread portion,
- wherein
- the tread reinforcing layer comprises
- a circumferential belt layer having a plurality of first reinforcing cords oriented at an angle equal to or less than 5 degrees with respect to a tyre circumferential direction, and
- an inclined belt layer comprising a plurality of inclined belt plies having a plurality of second reinforcing cords arranged at an inclination angle in a range from 10 to 35 degrees with respect to the tyre circumferential direction,
- the circumferential belt layer comprises
- a pair of axially spaced first circumferential belt plies extending in radially inner regions of the pair of shoulder circumferential grooves, and
- a pair of axially spaced second circumferential belt plies that is superimposed on the pair of first circumferential belt plies,
- the pair of first circumferential belt plies is arranged apart from one another at a distance L equal to or more than 20 mm in a tyre axial direction,
- a pair of axially outermost ends of the pair of first circumferential belt plies is located axially inwardly of a pair of axially outermost ends of the inclined belt layer, and
- the pair of second circumferential belt plies is located axially outwardly of inner regions of the pair of shoulder circumferential grooves such that the pair of second circumferential belt plies does not overlap the inner regions of the pair of shoulder circumferential grooves.
8 more elements
A tyre comprising:
- a tread portion being provided with a pair of shoulder circumferential grooves on an outer surface thereof and a tread reinforcing layer disposed in the tread portion,
- wherein
- the tread reinforcing layer comprises
- a circumferential belt layer having a plurality of first reinforcing cords oriented at an angle equal to or less than 5 degrees with respect to a tyre circumferential direction, and
- an inclined belt layer comprising a plurality of inclined belt plies having a plurality of second reinforcing cords arranged at an inclination angle in a range from 10 to 35 degrees with respect to the tyre circumferential direction,
- the circumferential belt layer comprises
- a pair of axially spaced first circumferential belt plies extending in radially inner regions of the pair of shoulder circumferential grooves, and
- a pair of axially spaced second circumferential belt plies that is superimposed on the pair of first circumferential belt plies via one or more inclined belt plies of the plurality of inclined belt plies,
- the pair of first circumferential belt plies is arranged apart from one another at a distance L equal to or more than 20 mm in a tyre axial direction,
- a pair of axially outermost ends of the pair of first circumferential belt plies is located axially inwardly of a pair of axially outermost ends of the inclined belt layer, and
- the circumferential belt layer further comprises a central belt ply that is arranged between the pair of first circumferential belt plies and that is apart from the pair of first circumferential belt plies in the tyre axial direction.
8 more elements
Dependencies are inferred from the claim text.