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. 24, 1990
Filed:
Nov. 16, 1988
Misao Kawabata, Tokorazawa, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
To improve high speed durability or prevent tire ribs and/or blocks from being peeled off at high speed travel, a tread rubber member whose outer surface is formed into corrugation shape along tire axial direction, when seen in cross section, is prepared to form a green tire so that radially convex portions thereof may be located under tire circumferential grooves to be formed after vulcanization process and radially concave portions thereof may be located under tire ribs and/or blocks also to be formed after vulcanization process. Since the rubber flow rate of the tread rubber member under the circumferential grooves is relatively larger, when the green tire is vulcanized, the belt layers are conversely deformed into radially concave shape under the circumferential grooves. When the vulcanized tire is inflated with air or rotated at high speed, since the belt layers are returned to a flat shape and further the ribs and/or blocks are deformed into radially concave shape, it is possible to reduce a rise in temperature at the central portion of each of ribs and/or blocks.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile