Enhanced operation toilet
US5487193A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 1993 |
| Grant date | Jan 30, 1996 |
| Priority date | — |
| Expiry date | Aug 27, 2013 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03D3/10
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A water saver toilet is provided, of the type that applies a vacuum to the toilet bowl outlet to assist flushing, which effectively uses the vacuum and which can be of low height. The toilet bowl outlet includes upper and lower trap devices (44, 50 in FIG. 2) connected by a trapway (46), with a vacuum source applied to the trapway during a flushing to pull out water and debris from the toilet bowl. One vacuum source (FIG. 3) includes a largely horizontal diaphragm (76) which separates a water chamber (82) from a vacuum chamber (80). The water chamber is initially filled with water, which is rapidly emptied during flushing, causing the diaphragm to rapidly fall from an upwardly bowed configuration (76) to a downwardly bowed configuration (76A). The vertically moving diaphragm produces a vacuum in the vacuum chamber that is connected to the trapway. A spring (84) (or weight) allows the water chamber to deliver water at a considerable pressure, regardless of the level of the water chamber with respect to the toilet bowl. Another vacuum source (FIG. 7) includes a water powered actuator (158) that receives water from a pressured water pipe at the beginning of flushing, to rapidly raise …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.