Invention Application
- Patent Title: PNEUMATIC TIRE
- Patent Title (中): 气动轮胎
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Application No.: US14124842Application Date: 2012-06-20
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Publication No.: US20140124118A1Publication Date: 2014-05-08
- Inventor: Shogo Wada , Toshiya Miyazono
- Applicant: Shogo Wada , Toshiya Miyazono
- Applicant Address: JP Chuo-ku, Tokyo
- Assignee: BRIDGESTONE CORPORATION
- Current Assignee: BRIDGESTONE CORPORATION
- Current Assignee Address: JP Chuo-ku, Tokyo
- Priority: JP2011-136368 20110620
- International Application: PCT/JP2012/004008 WO 20120620
- Main IPC: B60C15/04
- IPC: B60C15/04

Abstract:
The present invention provides a pneumatic tire having a bead core embedded in a bead portion of the tire, the bead core being constituted of a strand as a rubber-coated single bead wire wound around the bead portion to be juxtaposed in plural columns in the axial direction and stacked in plural rows in the radial direction to form a torus structure, characterized in that: the bead core as the torus structure is constituted of two columns of the bead wire juxtaposed in the axial direction; a winding-start end and a winding-terminal end of the bead wire are situated at the outermost rows in the radial direction of the corresponding columns thereof, respectively; and at least one of an interval between the winding-start end and an inner peripheral layer adjacent to the winding-start end of the bead wire and an interval between the winding-terminal end and an inner peripheral layer adjacent to the winding-terminal end of the bead wire is larger than any other intervals between two adjacent bead wires of the bead core.
Information query