Runflat tire with sawtooth shaped insert
US6923233B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1999 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Sep 30, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/10171
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A runflat radial ply tire (70) having a thread (72), a carcass (86) and a belt structure (74) radially located between the thread and the carcass has two sidewalls (80, 82) each reinforced with a circumferentially disposed wedge insert (50a′, 50b′) having a saw-tooth cross-sectional shape. The saw-tooth cross-sectional shape of each wedge insert (50a′, 50b′) is defined by a plurality of circumferentially disposed segments (52a–52e), each of which is separated from adjacent segments by circumferentially disposed grooves (54a–54d). During heavy loading of the tire, or during runflat operation, the radially loaded sidewall portions deform until the grooves (54a′–54d′) undergo closure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.