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:
Dec. 30, 2008
Filed:
Dec. 16, 2002
Takeshi Kuroki, Kobe, JP;
Minoru Nishi, Kobe, JP;
Takahiro Kimishima, Kobe, JP;
Satoshi Tsuda, Kobe, JP;
Jyunji Ohira, Kobe, JP;
Mitsuharu Koya, Kobe, JP;
Masakazu Washizuka, Kobe, JP;
Takeshi Kuroki, Kobe, JP;
Minoru Nishi, Kobe, JP;
Takahiro Kimishima, Kobe, JP;
Satoshi Tsuda, Kobe, JP;
Jyunji Ohira, Kobe, JP;
Mitsuharu Koya, Kobe, JP;
Masakazu Washizuka, Kobe, JP;
Sumitomo Rubber Industries, Ltd., Kobe-shi, JP;
Abstract
In a ground-contact surface shape of a tire, when a tangent angle formed between an axial direction of the tire and a tangent X at each point P on a profile line of the tire is defined as θ, a tangent angle θin a ground-contact end point Pd is 25° or smaller. When a minimum value of the tangent angle θ in a region Y which is separated away from a tire equator C by a distance in a range of not less than 0.4 times but not more than 0.7 times a half of the ground-contact width of the tread is defined as θ, and a tangent angle at a 0.9 times point Pq which is separated away from the tire equator C by a distance of 0.9 times the half of the ground-contact width of the tread is defined as θ, a difference (θ) is set in a range of not less than −10° but not more than +10°.