Method and apparatus for lining outdoor fluid containment areas to facilitate electrical leak detection
US5288168A · kind A · utility
35Cited by
15References
38Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 24, 1992 |
| Grant date | Feb 22, 1994 |
| Priority date | — |
| Expiry date | Aug 24, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/256
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved method and apparatus for waterproofing soil utilizing a flexible plastic sheet for providing a water barrier provides a system for readily detecting the presence of holes in the plastic material. The sheet includes a plastic layer which may be rendered electrically conductive by embedding conductive particles within it. The integrity of the sheet may then be monitored by establishing an electric field across the sheet and monitoring for sparks between the conductive plastic layer and a probe. Reliable and economical testing is possible, even in situation where electrical leak testing was not previously feasible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.