Waterless flush toilet system
US4313233A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 20, 1980 |
| Grant date | Feb 2, 1982 |
| Priority date | — |
| Expiry date | Jun 20, 2000 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03D5/016
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A waterless flush toilet system comprising a toilet and a gravity fed waste holding tank. The system utilizes a recirculating nonaqueous flushing fluid which is stored within the holding tank. The fluid, which is lighter than the waste material and insoluble therein, forms a stratified layer on the surface of the material. A float having a flushing fluid inlet floats within the layer of fluid, separated from solid waste matter by a tubular screen member, the float being suspended from the top of the tank by a flexible coiled hose which is coupled to the fluid inlet. The coiled hose contracts as the waste level in the tank rises, thereby permitting the float to remain within the flushing fluid layer regardless of the waste material level. When the toilet is flushed, an air-powered pump draws a fraction of the fluid into the fluid inlet of the float, through the flexible hose and finally to the toilet. The fluid serves as a medium for transporting the waste material from the toilet to the holding tank. When the fluid is flushed into the tank, it separates from the waste material and returns to the stratified layer for reuse. An exhaust system utilizes a double-walled toilet to preven…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.