Pneumatic tire generating musical pattern sound

Details Pneumatic tire generating musical pattern sound Pneumatic tire generating musical pattern sound

1989-01-08

1992-06-30

Knable, Geoffrey L.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

B60C 1111

Patent

active

051254441

ABSTRACT:
In a pneumatic tire having at least two ribs in a tread portion, one of these ribs is a basic rib constructed by arranging plural basic pitch elements having the same pitch in the circumferential direction of the tire, and any one of the remaining ribs is a chord rib constructed by arranging plural chord pitch elements having the same pitch in the circumferential direction. In this rib arrangement, the total number of chord pitch elements in the chord rib is a positive integer obtained by counting or emitting a product of a value of 2.sup.n/12 (n: 1-24) and a total number of basic pitch elements in the basic rib, and pattern sound from the basic rib and the chord rib have a consonance relation, whereby the noise from the tire can be reduced.

REFERENCES:
patent: 3217776 (1965-11-01), Ellenrieder et al.
patent: 4416316 (1983-11-01), Clatworthy et al.

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