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:
Jun. 30, 2015
Filed:
Jan. 18, 2012
Masataka Uchiyama, Kodaira, JP;
Masataka Uchiyama, Kodaira, JP;
BRIDGESTONE CORPORATION, Tokyo, JP;
Abstract
It is an object to ensure the strength of a carcass line, enhance durability with respect to high applied loads, and be able to suppress the input of compressive force with respect to a carcass ply without increasing mass and cost. When W denotes a distance from a tire equatorial plane (CL) to a tire axial direction outermost point (P) of a carcass body portion (C) and D denotes a tire radial direction height from bead base portions () to a carcass body portion (A) at the tire equatorial plane (CL), a radius of curvature (R) of a carcass ply () in a range from the tire equatorial plane (CL) to a position (P) located 0.6 W away from the tire equatorial plane (CL) in the tire axial direction, a radius of curvature (R) of a carcass body portion (B) in a range from the position (P) to a position (P) located 0.7 D on the tire radial direction outer side from bead base portions (), and a radius of curvature (R) of the carcass body portion (C) in a range from the position (P) to a position (P) located 0.3 D on the tire radial direction outer side from the bead base portions are such that 0.07≦R/R≦0.11 and 0.5≦R/R≦0.7.