Emergency flat roof repair method
US5158803A · kind A · utility
3Cited by
5References
3Claims
0Family size
Inventor
Key dates
| Filing date | Jun 17, 1991 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Jun 17, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/755
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An emergency flat roof repair method and material which can be used during rain storms in standing water which involves the spreading of a sealer composed of sodium bentonite particles over the leak by hand or spreader. On contact with water the sealer expands and gravitates to the leak almost instantly plugging the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.