Manufacturing method of pneumatic tire
US8052817B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 23, 2008 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | Apr 29, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/10765
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
First, a first belt ply is wound around an outer peripheral surface of a belt drum having a curvature so as to be formed as a tubular shape, and a rubber layer protruding to an outer side than an end portion in a width direction of a belt reinforcing layer is arranged in an outer periphery of an end portion in a width direction of the first belt ply. Further, a second belt ply which is narrower than the first belt ply is wound around an outer periphery of the second belt ply so as to be formed as a tubular shape, and a belt layer is formed in such a manner that the first belt ply and the second belt ply are laminated. The belt reinforcing layer is formed by spirally winding a rubber-coated reinforcing cord around an outer peripheral side of the formed belt layer, and an end portion in a width direction of the belt reinforcing layer is arranged in an outer side than the first belt ply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.