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US 10,245,890 B2Granted
Tire with noise-reducing tread pattern
AssigneeBridgestone Americas Tire Operations, LLC
InventorsAkiko G. Neil, Jon I. Stuckey
Life of this patent
Estimating the term…
Abstract
A tire includes a tire carcass and a tread extending circumferentially about the tire carcass. The tread includes a plurality of tread elements disposed in a tread pattern. The plurality of tread elements have one of two different pitch lengths and are disposed in a noise-reducing pitch sequence.
Claims17
A tire having an axis of rotation, said tire comprising:
- a tread extending circumferentially about said axis and including a plurality of tread elements disposed in a tread pattern,
- each of said plurality of tread elements having one of two different pitch lengths, the two different pitch lengths being a short pitch length and a long pitch length, a pitch ratio of the long pitch length to the short pitch length being within a range of from approximately 1.15 to approximately 1.40, and
- said tread pattern including 44 pitches having 24 occurrences of a first pitch length and 20 occurrences of a second pitch length arranged according to a pitch sequence of 2 1 2 2 2 2 2 1 2 2 1 1 1 1 1 1 1 2 2 2 2 2 2 1 1 1 1 1 1 2 2 2 2 1 2 1 1 1 1 1 1 2 1 1 wherein in the pitch sequence, 1 is a pitch having the short pitch length and 2 is a pitch having the long pitch length.
A tire having an axis of rotation, said tire comprising:
- a tread extending circumferentially about said axis and including 44 tread elements disposed in a circumferentially-extending row, said 44 tread elements being disposed in circumferentially-spaced relation to one another and forming 44 pitches disposed circumferentially about said axis, said 44 pitches having one of two different pitch lengths, the two different pitch lengths being a short pitch length and a long pitch length, a pitch ratio of the long pitch length to the short pitch length being 1.22, said 44 tread elements being arranged such that said 44 pitches have 24 occurrences of a first pitch length and 20 occurrences of a second pitch length arranged according to a pitch sequence of 2 1 2 2 2 2 2 1 2 2 1 1 1 1 1 1 1 2 2 2 2 2 2 1 1 1 1 1 1 2 2 2 2 1 2 1 1 1 1 1 1 2 1 1 wherein in the pitch sequence, 1 is a pitch having the short pitch length and 2 is a pitch having the long pitch length.
A method of manufacturing a tire, said method comprising:
- forming a tire carcass extending circumferentially about an axis of rotation;
- and,
- forming a tread extending circumferentially about said axis along said tire carcass, said tread including 44 tread elements disposed in a circumferentially-extending row, said 44 tread elements being disposed in circumferentially-spaced relation to one another and forming 44 pitches disposed circumferentially about said axis, said 44 pitches having one of two different pitch lengths, the two different pitch lengths being a short pitch length and a long pitch length, said 44 tread elements being arranged such that said 44 pitches have 24 occurrences of a first pitch length and 20 occurrences of a second pitch length arranged according to a pitch sequence of 2 1 2 2 2 2 2 1 2 2 1 1 1 1 1 1 1 2 2 2 2 2 2 1 1 1 1 1 1 2 2 2 2 1 2 1 1 1 1 1 1 2 1 1 wherein in the pitch sequence, 1 is a pitch having the short pitch length and 2 is a pitch having the long pitch length.
Dependencies are inferred from the claim text.