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:
Jun. 26, 1990
Filed:
Mar. 07, 1986
Shinzo Kajiwara, Hyogo, JP;
Kaoru Furubayashi, Hyogo, JP;
Sumitomo Rubbert Industries, Ltd., Hyogo, JP;
Abstract
A low-noise tire which comprising a plurality of block lines which run in the circumferential direction of the tire. The block lines include a basic block line made up of unit blocks arranged at a uniform pitch in the circumferential direction of the tire and phase-difference block lines each made up of unit blocks arranged such that the phase in the circumferential direction is shifted with respect to that of the unit blocks in the basic block line. The phase difference varies from one unit block to the adjacent one in the circumferential direction. The length of the unit block in the basic block line is smaller than that of the unit block in the phase-difference block line.