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:
Nov. 19, 1991
Filed:
Nov. 06, 1990
Akihiro Nakatani, Kakogawa, JP;
Hideaki Nagayasu, Toyota, JP;
Sumitomo Rubber Industries, Ltd., Hyogo, JP;
Abstract
A tire and wheel rim assembly in which the tire has a pair of axially spaced bead portions, and the wheel rim has a pair of axially spaced bead seats upon which the bead portions of the tire are seated, at least one of the bead seats is provided at the axially inner edge thereof with a circumferential groove, at least one of the bead portions is provided with a toe extending radially inwardly into the circumferential groove, wherein the toed bead portion comprises a soft rubber layer disposed along the bottom face of the bead portion to form said bead toe and a hard rubber layer disposed radially outside the soft rubber layer, the soft rubber layer is covered by a fabric chafer disposed along the contour of the bead portion, the hard rubber layer is made of relatively hard rubber having a JIS A hardness HS1 of not less than 60 and not more than 95, the soft rubber layer is made of soft rubber having a JIS A hardness HS2 of not less than 48 and not more than 90, and the ratio HS2/HS1 of the hardness HS2 of the soft rubber to the hardness HS1 of the hard rubber layer is not less than 0.7 and not more than 0.95.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile