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:
Aug. 09, 2016
Filed:
Oct. 18, 2012
Sumitomo Rubber Industries, Ltd., Kobe-shi, Hyogo, JP;
Satoshi Tanaka, Kobe, JP;
Sumitomo Rubber Industries, Ltd., Kobe-Shi, JP;
Abstract
A heavy duty pneumatic tire includes main grooves that extend in the tire circumferential direction. A siped block is provided with at least one sipe to circumferentially subdivide the block into at least two block pieces that include at least one holed block piece provided with at least one small hole. Each small hole extends radially inwardly from the ground contacting surface of the holed block piece to its bottom at a depth in a range of from 30 to 100% of a depth of the main grooves. Each small hole has a round cross-sectional shape to have a maximum radius in a range of from 0.6 to 2.0 mm at the opening of the small hole in the ground contacting top surface. The total opening area of the at least one small hole is 2 to 12% of the overall area of the ground contacting top surface.