Extendable curing press center post
US6733712B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 17, 2002 |
| Grant date | May 11, 2004 |
| Priority date | — |
| Expiry date | Apr 17, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D30/0645
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A center post assembly for a tire curing press comprising a center post having a upper component disposed above a lower component. The upper component is movable between a first position wherein the upper component is adjacent to the lower component and a second position wherein the upper component is axially displaced away from the lower component and substantially adjacent to an upper bead of a green tire assembly. The center post assembly further includes a bladder sealingly clamped to the upper and lower components. The bladder is in fluid communication with a fluid supply. The upper component moves between said first and second positions due to expansion of the bladder caused by introduction of fluid into the bladder from the fluid supply allowing the bladder to evenly disperse on the inner surface of the green tire assembly substantially reducing the risk of the bladder being damaged by the mold as it closes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.