Toilet-blow flush system and devices therefor
US4171547A · kind A · utility
Inventor
Key dates
| Filing date | Jul 15, 1977 |
| Grant date | Oct 23, 1979 |
| Priority date | — |
| Expiry date | Jul 15, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/901
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A device for converting a single volume cistern into a cistern allowing both low-volume and high-volume flushes. The device includes a hollow vessel inserted in the cistern and at least partially surrounding the flushing mechanism and water outlet. An opening at the upper end of the vessel for the entry of water and at least one selectively openable port comprising a hinged door having a retaining lever arm attached at one of its ends to the door are provided. The arm and door are movable between a first closed position to a second displaced open position. The vessel forms an open ended water column extending above and around the water outlet to exclude a portion of the water in the cistern from passing through the outlet while the door is in the first position for low volume flushes. The door and the lever arm move to the second displaced open position with the lever held and restrained by interaction with a standard water-level responsive part. The arm forces the door, once opened, to remain in its open displaced position during the entire flushing action and until after completion thereof for high volume flushes, whereafter the arm is released from its displaced position. The do…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.