Run flat tire with an elastomeric inner support
US6679306B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 10, 2001 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Apr 25, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/10522
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A run flat tire that includes a tire casing and an inner support fitted within which tire casing, with the inner support to support the tire casing load upon run flat tire deflation. The tire casing and inner support are for mounting to a rim, the tire casing side wall bead ends to fit against side wall ends of the inner support that are maintained against rim interior stepped sections. The inner support is formed from an elastomeric material, preferably by casting or molding methods, to include an interior arch shaped cavity centered under the inner support outer surface having at least one hundred forty (140) degrees and not more than one hundred eighty (180) degrees of arc, and has a uniform thickness between the inner support inner and outer surfaces that is selected to support a particular anticipated load, after tire deflation, to support, in compression, the tire load for a target distance and speed. The run flat tire includes a valve stem that passes air into the inner support that travels through holes formed through the inner support side walls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.