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. 28, 2015
Filed:
Sep. 07, 2012
Kenji Horiuchi, Oiwake, JP;
Kenji Horiuchi, Oiwake, JP;
Abstract
In a pneumatic run flat tire in which an inner side reinforcing rubber layer having a falcated cross-section is disposed in a side wall portion, dynamic elastic moduli E', E′, and E′and values T, T, and Tof a tan δ at 60° C. of rubber compositions of each region of the inner side reinforcing rubber layer are configured so as to satisfy the relationships E′<E′<E′, E′≧4.0 MPa, T<T<T, and T≦0.06. Dynamic elastic moduli E′, E′, and E′at 60° C. of rubber compositions of each region of the outer side rubber layer are configured so as to satisfy the relationships E′<E′≦E′and E′/E′≧1.6. Furthermore, the dynamic elastic modulus ratios E′/E′and E′/E′are configured so as to satisfy the relationships 0.6≦E′/E′≦1.0 and 0.6≦E′/E′≦1.0.