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:
May. 17, 2022
Filed:
Dec. 04, 2018
The Yokohama Rubber Co., Ltd., Tokyo, JP;
Atsushi Tanno, Hiratsuka, JP;
Hiraku Kouda, Hiratsuka, JP;
Jun Matsuda, Hiratsuka, JP;
Masaaki Nagayasu, Hiratsuka, JP;
Yuki Sasaya, Hiratsuka, JP;
Ryohei Takemori, Hiratsuka, JP;
The Yokohama Rubber Co., LTD., Tokyo, JP;
Abstract
Of layers configuring a bead core of a pneumatic tire, the width Wof one of the layers including the greatest number of rows, the width W, Wof other of the layers located respectively innermost and outermost in the radial direction satisfy W>Wand W≤0.5×W. The position of width Wis inward in the radial direction of the center of the bead core. A carcass is folded and curved along the bead core and extends toward sidewalls where a folded back portion of the carcass contacts a body of the carcass. A rubber occupancy ratio in a closed region formed by the body and the folded back portion is 0.1% to 15%. The cross-sectional area Sand hardness Hof a filler outward of the carcass in the lateral direction, and the cross-sectional area Sand the hardness Hof the side reinforcing layer satisfy 0.12≤(S×H)/(S×H)≤0.50.