Bladder for tire vulcanization and tire vulcanization device
US9120281B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2012 |
| Grant date | Sep 1, 2015 |
| Priority date | — |
| Expiry date | Sep 24, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D2030/0659
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
By providing projections 4 extending intermittently or continuously on the inner wall face of the cylindrical shaped bladder 2 at an inclination to the circumferential direction thereof, during vulcanization of a green tire G when the inside of the bladder 2 is filled by injecting with hot water as heating medium H and pressurizing medium, or steam as heating medium H and a gas as pressurizing medium, the heating medium H is guided along the projections 4 and flows in the circumferential direction of the expanded bladder 2, and flows in a rotating motion in the vertical direction of the bladder 2, and as a result of the synergistic action of the circular flow of the heating medium H in the circumferential direction of the bladder and the rotating flow in the vertical direction of the bladder, the temperature difference of the bladder 2 is sufficiently reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.