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:
Dec. 21, 1999
Filed:
Aug. 05, 1997
Applicant:
Inventors:
Assignee:
Sumitomo Rubber Industries, Ltd., Hyogo-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60C / ; B60C / ; B60C / ; B60C / ;
U.S. Cl.
CPC ...
15220918 ; 15220922 ; 15220926 ; 15220927 ; 152902 ; 152D / ;
Abstract
A pneumatic tire comprises an improved tread portion provided with blocks, each block provided with a sipe, the sipe extending across the block to have a first open end and a second open end, the sipe comprising three components forming a generally Z-shaped configuration, whereby the two parts divided by the sipe are engaged with each other to increase the block rigidity.