초록 ▼

A tire which emits reduced travel noise, when moving on a surface, having a tread formed of load-bearing elements distributed over the circumference of the tire in accordance with a plurality of repetitive design cycles of variable pitch is characterized by the fact that the number of each of the pr

A tire which emits reduced travel noise, when moving on a surface, having a tread formed of load-bearing elements distributed over the circumference of the tire in accordance with a plurality of repetitive design cycles of variable pitch is characterized by the fact that the number of each of the principal design cycles of different pitch satisfies all of the n-1 general relationships (B): [Figure] and by the fact that the number of each of the design cycles present on the tread satisfies the relationship (C): [Figure] it being understood that [Figure] and/or e

대표청구항 ▼

A tire whose tread is formed of load-bearing elements distributed over the circumference of the tire in accordance with a plurality of repetitive design cycles of variable pitch, characterized by the fact that the number of each of the principal design cycles of different pitch satisfies all of the

A tire whose tread is formed of load-bearing elements distributed over the circumference of the tire in accordance with a plurality of repetitive design cycles of variable pitch, characterized by the fact that the number of each of the principal design cycles of different pitch satisfies all of the n-1 general relationships (B): [Figure] and by the fact that the number of each of the design cycles present on the tread satisfies the relationship (C): [Figure] it being understood that [Figure] and/or e3, preferably from 4 to 7, and it also designates the principal design cycle having the maximum pitch, m represents the number of looping design cycles of different pitch present on the tread of the tire, which may be either zero or a whole number, and it also designates the looping design cycle having the maximum pitch, i represents any one, the ith, of the principal design cycles of rank i other than that of maximum pitch, j represents any one, the jth, of the looping design cycles of rank j, li represents the pitch ratio of the length of each of the principal design cycles of rank i in question to the length of the principal design cycle of maximum pitch, R represents the radius of the tire measured at the periphery of the tread which comes into contact with the surface of the ground, ei represents the length of the principal design cycle of rank i in question of the principal design cycles of different pitch, a*j represents the length of the looping design cycle of rank j in question of the looping design cycles of different pitch, Nn represents the total number of principal design cycles of maximum pitch, Ni represents, for each of the principal design cycles of rank i having a pitch less than the pitch of the principal design cycle of maximum pitch, the total number of principal design cycles of rank i, and N*j represents the total number of looping design cycles of each of the cycles of rank j in question.