System for handling drain waters of different degrees of contamination
US6261443A · kind A · utility
Inventor
Key dates
| Filing date | Jun 15, 1999 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Jun 15, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/4673
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drain water system includes a plurality of containers (7-9) within a building 1 for receiving respective drain waters differing in degree of contamination. A plurality of building 1 having such containers share a main drain water conduit leads to at least two stations (13-15) for receiving the respective drain waterd of differing degrees of contamination. Adjusting apparatuses (including, for example, pumps 17) sequentially discharge the containers depending upon their degree of drain water contamination. During a certain time period, drain waters of the same degree of contamination will be discharged into the main drain conduit and will then flow to a specific station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.