Water barrier of water-swellable clay sandwiched between interconnected layers of flexible fabric
US5112665A · kind A · utility
27Cited by
10References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 19, 1991 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | Jul 19, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/348
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A multi-layer article of manufacture includes an intermediate layer of a water-swellable colloidal clay, such as bentonite, sandwiched between two layers of flexible sheet or fabric material wherein the two flexible layers of sheet or fabric material are structurally interconnected through the intermediate clay layer, such as by quilting, with threads, fibers, filaments or strands of flexible material at spaced locations over essentially the entire outer surface areas of both sheet or fabric material layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.