Method and apparatus for repairing leaks in water heaters
US4109684A · kind A · utility
18Cited by
5References
3Claims
0Family size
Inventor
Key dates
| Filing date | Apr 14, 1977 |
| Grant date | Aug 29, 1978 |
| Priority date | — |
| Expiry date | Apr 14, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49885
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A typical pinhole leak that has occurred along the flue pipe of a water heater is quickly and effectively repaired by employing a spring-tempered, sealant-coated cylindrical repair section that is first coaxially positioned inside the flue pipe in a compressed position and that is subsequently triggerably released to spring to an expanded position whereby a permanent sealant layer is formed between the cylindrical repair section and the flue pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.