Curing membrane for a tire
US11090889B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2019 |
| Grant date | Aug 17, 2021 |
| Priority date | — |
| Expiry date | Feb 13, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D2030/0655
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A curing bladder (7) for a tire has a shape of revolution about a central axis and a flexible wall made of crosslinked rubber, the external surface of which is intended to come into contact with the internal surface of a green tire during curing, the external surface having a relief structure having a plurality of air evacuation channels. The relief structure has first channels forming air evacuation grooves (100) arranged at a distance of between 2 and 5 mm, and having a depth of between 0.4 and 1 mm, two adjacent grooves defining, between one another, an inter-groove zone (500) having second channels forming air channelling furrows (1000) made so as to communicate with one another and with at least one of the grooves (100), the furrows each having a depth of between 0.01 and 0.4 mm and being situated at a distance of between 0.2 and 1 mm from one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.