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:
Jul. 25, 1995
Filed:
Jun. 23, 1993
Sumitomo Rubber Industries, Ltd., Kobe, JP;
Abstract
A pneumatic radial tire comprises four main grooves, shoulder lateral grooves (g1L, g1R), middle lateral grooves (g2L, g2R) and central lateral grooves (g3L, g3R); the central lateral grooves (g3L) on one side of the tire equator being circumferentially shifted from the central lateral grooves (g3R) on the other side of the tire equator; the middle lateral grooves (g2L, g2R) shifted from the central lateral grooves (g3L, g3R) towards a circumferential direction (D); the shoulder lateral grooves (g1L, g1R) shifted from the middle lateral grooves (g2L, g2R) towards the circumferential direction (D); the total (WG) of the axial widths (WG1, WG2) of the four main grooves being 0.25 to 0.32 times the ground contacting area width (W); on each side of the tire equator, the width (W) and the total (LG1+LG2) of the axial length (LG1) measured from the ground contacting area edge (SE) to the axially inner edge of the shoulder rib (RS) and the axial length (LG2) measured from the ground contacting area edge (SE) to the axially inner edge of the middle rib (RM) satisfying the following relation: 0.44.ltoreq. (LG1+LG2)/W.ltoreq. 0.50.