Locked bead pneumatic tire with wrap-around toeguard
US7441577B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2005 |
| Grant date | Oct 28, 2008 |
| Priority date | — |
| Expiry date | Dec 30, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/10846
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A pneumatic tire 10 has a carcass ply 12 or plies 12, 14 with a locked tie-in construction and a wrap-around toeguard 18. Each wrap-around toeguard 18 is a non cord reinforced elastomeric unitary strip wound 360 degree in a singular annular bead. The wrap-around toeguard cord reinforced unitary strip 18 can be formed of a single elastomeric composition having a shore hardness D of greater than 40. Alternatively the wrap-around toeguard may additionally include an apex portion 29 and a chafer portion 27 along with the toeguard portion 28, each portion 27, 29 being co-extruded or otherwise hot formed and shaped with the toeguard portion 28 to form the unitary strip 18 and can have distinct elastomeric composition relative to the toeguard portion 28.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.