Invention Grant
- Patent Title: Pneumatic tire and manufacturing method therefor
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Application No.: US15631507Application Date: 2017-06-23
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Publication No.: US10894376B2Publication Date: 2021-01-19
- Inventor: Naoki Sugiyama , Tomoharu Torii
- Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
- Applicant Address: JP Kobe
- Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
- Current Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
- Current Assignee Address: JP Kobe
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2011-274779 20111215
- Main IPC: B29D30/48
- IPC: B29D30/48 ; B60C15/00 ; B29D30/16 ; B29D30/34 ; B60C15/04 ; B29K305/00

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 tire 1 comprises a bead core 5 comprising a wire wound body 10 in which one bead wire 10a is 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 body 10 comprises a first part 13 and a second part 14. The first part 13 comprises a plurality of layers of the bead wire 10a each circumferentially extending with a constant radius from the tire rotational axis CL. The second part comprises a plurality of layers of the bead wire 10a each circumferentially extending while changing its radius from the tire rotational axis CL.
Public/Granted literature
- US20170282473A1 PNEUMATIC TYRE AND MANUFACTURING METHOD THEREFOR Public/Granted day:2017-10-05
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