Method for manufacturing a tire
US6682687B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2000 |
| Grant date | Jan 27, 2004 |
| Priority date | — |
| Expiry date | Aug 29, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D2030/0674
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
When a green tire is molded on a bladder in molding step and then carried into the mold of a vulcanizer in vulcanization step to vulcanization-mold the green tire, the upper bead and lower bead of the green tire are connected and fixed through a center post as they are retained by the bladder kept in the airtight state by an upper ring and a lower ring until the molded green tire has been carried into the mold of the vulcanizer, and a pressure gas is sealed into the bladder located in the internal space of the green tire to lay it in the expanded state, whereby the green tire can be carried between the steps and carried into the mold in the state maintaining a fixed shape. Accordingly, the deformation of the green tire can be prevented, and the slippage of supporting center of the green tire when set in the vulcanizer can be sufficiently reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.