Vacuum tank construction for self-contained sewage handling apparatus
US4672690A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1986 |
| Grant date | Jun 16, 1987 |
| Priority date | — |
| Expiry date | Jan 24, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86236
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A sewage treatment system includes a toilet, vacuum tank, and vacuum pump. The toilet has a discharge portion at its bottom, and a foot operated valve selectively allows, or blocks, passage of water and waste from the toilet bowl into the discharge. When the valve is opened in rushing air forces waste and water from the bowl at high velocity so that the waste fragments. The vacuum tank is connected to the toilet discharge and is disposed directly below it, and has an outlet at its bottom and a dome-shaped baffle, with side openings, covering the vacuum tank outlet. A vacuum switch is operatively connected to the vacuum tank and controls the vacuum pump. The pump is operatively connected by a conduit to the vacuum tank outlet. The vacuum tank outlet has a diameter about half the size of that of the vacuum tank inlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.