Arrangement for draining liquid collecting on a ground surface
US4909664A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1988 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Sep 28, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04D2013/0436
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In constructions with a relatively limited ground height, e.g., bridges, flat roofs, etc. the foundation or earthwork is covered with a sealing sheet, which extends up to a drain casing or frame. To avoid a return flow of liquid below the sealing sheet and into the foundation, in the arrangement according to the invention, the edge portion of the sealing sheet is laid downward over the wall of the frame or the casing. A locking frame is placed on the edge portion of the sealing element. The locking frame can additionally be secured in position by vertical threaded bolts and is used for pressing the edge portion of the sealing sheet onto the frame or onto the casing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.