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:
Feb. 06, 2018
Filed:
Sep. 03, 2013
The Yokohama Rubber Co., Ltd., Minato-ku, Tokyo, JP;
Kenji Horiuchi, Hiratsuka, JP;
Abstract
In a side reinforcing type run flat tire, a minimum wall thickness portion is arranged between an end portion of each belt layer and a position at 70% of a tire cross-sectional height SH. A relationship between a thickness Gof the minimum wall thickness portion and a thickness Gof a maximum wall thickness portionis 0.5×G≦G≦0.8×G. A relationship between a length L min of a thin wall region and the tire cross-sectional height SH is 0.18×SH≦L≦0.26×SH. A relationship among a weight Wr of a side reinforcing layer, a total weight Wt of the tire, and a tire flattening rate R is 0.08×Wt×(1−0.2×(1−R/50))≦Wr≦0.18×Wt×(1−0.2×(1−R/50)). A relationship between a thickness Ga at a rim check line position of an outer side rubber portion more to the outer side than a carcass layer and a maximum thickness Gb thereof is 0.8×Gb≦Ga≦1.0×Gb.