Device in a waste disposal system in a building
US6092549A · kind A · utility
Inventor
Key dates
| Filing date | Apr 30, 1998 |
| Grant date | Jul 25, 2000 |
| Priority date | — |
| Expiry date | Apr 30, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/6969
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The drain system in a building is divided in at least two parts, namely a first part (2) arranged to receive drain water contaminated to a relatively high degree from one or a plurality of first units (3), and a second part (10) arranged to receive drain water normally contaminated to a lower degree from one or a plurality of second units (11, 12). The second drain system part (10) comprises at least one drain conduit (13) and at least one unit (11) connected thereto and so constructed that it lacks traps preventing a flow of air therethrough. An apparatus (16) is connected to the drain conduit (13), for generating such a negative pressure in the drain conduit giving rise to an evacuating flow of air from the room in question in the building through the at least one unit (11) and through the drain conduit (13).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.