Emergency track ring for pneumatic vehicle tires
US4295509A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 26, 1979 |
| Grant date | Oct 20, 1981 |
| Priority date | — |
| Expiry date | Nov 26, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/10738
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An emergency track ring for a tubeless pneumatic tire comprising a bottom reinforced flange for mounting the ring on such a tire rim. At least one opening is formed in the ring to permit air to be admitted to the interior of the tire. Groove means are formed in the ring for filling with a lubricating material, and sealing lips close the groove means and seal the lubricant therein when the tire is mounted on said rim and under pressure. Flange means are integrally formed with the sealing lips and extend upwardly for engagement by the inside of the tire cover during loss of air, the depressing of the flange means effecting a lever action which causes the sealing lips to move so as to open the grooves and permit and lubricating material to be released to reduce friction between the tire cover and the track ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.