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:
Jan. 19, 2021
Filed:
Jun. 23, 2017
Sumitomo Rubber Industries, Ltd., Kobe, JP;
Naoki Sugiyama, Kobe, JP;
Tomoharu Torii, Kobe, JP;
SUMITOMO RUBBER INDUSTRIES, LTD., Kobe, JP;
Abstract
The present invention has an object of providing a pneumatic tire that exhibits better uniformity by improving the wire wound body for constituting the bead core. The pneumatic tirecomprises a bead corecomprising a wire wound bodyin which one bead wireis spirally wound in a continuous around a tire rotational axis CL so that a plurality of layers of the bead wire are formed in a radial direction of the tire. The wire wound bodycomprises a first partand a second part. The first partcomprises a plurality of layers of the bead wireeach circumferentially extending with a constant radius from the tire rotational axis CL. The second part comprises a plurality of layers of the bead wireeach circumferentially extending while changing its radius from the tire rotational axis CL.