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:
Apr. 01, 2008
Filed:
Jun. 21, 2004
Masatoshi Tanaka, Kobe, JP;
Takuya Yamamoto, Kobe, JP;
Masatoshi Tanaka, Kobe, JP;
Takuya Yamamoto, Kobe, JP;
Sumitomo Rubber Industries, Ltd., Kobe-Shi, Hyogo, JP;
Abstract
First of all, size data (MD), (BD), (BH) and (MW) of a tire are input. Next, a ratio (b/a) of a major axis radius (b) to a minor axis radius (a) of an ellipse () is input. Then, constants (S), (a) and (b) of an involute function are calculated. Based on the involute function having these constants, a profile function () from a central position in a lateral direction to a maximum width position is determined over an X-Y plane. Subsequently, the profile curve () is divided into a large number of segments. Next, each of the segments is caused to approximate to a circular arc. In the approximation, a radius of curvature is determined in such a manner that the adjacent circular arcs are tangent to each other. Thus, a profile is designed.