Stop-leak composition for internal combustion engines
US6786960B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 2002 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Sep 26, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K3/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A stop-leak composition for the cooling system of an internal combustion engine and the like may comprise a powdered mixture of ground wood, optionally with ginger rhizome powder, with the above being mixed with ground nutshells. The composition may be packaged in polyvinyl alcohol film. Also, a stop-leak composition tablet may be prepared from powdered purified cellulose, ground nutshells, and ginger rhizome powder, formed into a solid tablet. Either of these items may be placed into the radiator of a vehicle. The bag and the tablet each dissolve, and the contents spontaneously disperse into the radiator coolant to seal pin hole leaks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.