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:
Apr. 18, 2000
Filed:
Nov. 14, 1997
Satoshi Tsuda, Akashi, JP;
Sumitomo Rubber Industries, Ltd., Kobe, JP;
Abstract
A pneumatic tire comprises a tread portion which is provided with a plurality of circumferential grooves extending continuously in the tire circumferential direction to axially divide the tread portion into a plurality of land portions, at least one of the land portions is provided with sipes each extending across the full width of the land portion to have a pair of open ends, each of the sipes is provided therein with at least three tie-bars to provide the bottom of the sip with at least three shallow parts in the open ends and therebetween and at least two deep parts between the shallower parts, and the depth (h2) at the shallow parts is set in the range of from 0.2 to 0.8 times the depth (h1) at the deep parts.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile