Method for repairing self-sealing tires
US12043008B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2021 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Oct 30, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2200/0617
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This invention discloses a technique for replenishing the level of sealant in self-sealing tires at the time that a puncture in the tire is being repaired or when the tire is being recapped. This technique provides the tire with its original level of self-sealing capabilities and will enhance the possibility of the tire remaining in service until it can be conveniently repaired. This method involves (1) injecting a liquid sealant formulation into the sealant layer of a self-sealing tire through at least one puncture hole therein, and (2) sealing the hole or holes in the supporting carcass and the innerliner of the tire. The sealant utilized is typically liquid polyisobutylene having a weight average molecular weight of 25,000 to 200,000. The sealant formulation used can optionally also contain a colorant or a pigment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.