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:
May. 05, 1992
Filed:
Oct. 18, 1989
Applicant:
Inventors:
Assignee:
Bridgestone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60C / ; B60C / ;
U.S. Cl.
CPC ...
1522 / ; 152D / ;
Abstract
A pneumatic radial tire comprises a tread divided into 4 to 5 ribs by 3 to 4 main wide grooves each extending circumferentially of the tire. In this tire, at least one row of sipes isolated from the main grooves in the axial direction of the tire and arranged at an approximately equal interval in the circumferential direction of the tire is arranged in only a second rib viewed from the outside in the axial direction of the tire.