The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 24, 1995
Filed:
Aug. 13, 1992
Tomohiko Kogure, Kanagawa, JP;
The Yokohama Rubber Co., Ltd., Tokyo, JP;
Abstract
A pneumatic tire having a tread surface comprised of a plurality of pitches of different lengths arranged to extend around the circumference of the tire and which includes a pitch of the shortest pitch length P.sub.min and a pitch of the longest pitch length P.sub.max, a period of the pitches begins with a pitch of P.sub.min and contains at least one pitch of P.sub.max between the pitch of P.sub.min and a pitch of P.sub.min in a next period, a fundamental period begins with the pitch of P.sub.min and ends with a pitch located immediately before the pitch of P.sub.min located first in the next period. In a pitch arangement within the fundamental period, the proportion of components of each higher order in the range of a second order to a fourth order relative to the first-order component is 80 to 200% when Fourier expansion of a stepped waveform comprising the reciprocal of the pitch length and the pitch length is conducted. The number of the fundamental periods is 1 to 4. The length of the pitch arrangement is 60% or more of the total circumferential length of the tire. The length of each fundamental period is at least 1/7 of the total circumferential length of the tire.