Dual flush apparatus
US6823534B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Apr 8, 2003 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Apr 8, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03D1/142
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A dual flush toilet and dual flush apparatus for a toilet having a discharge port for flushing water into a toilet bowl includes a buoyant flush valve for releasably sealing a discharge port and having a cavity for trapping air to cause a flush valve to remain open after unsealing of the flush valve from the discharge port. The flush valve has a weight for causing seating of the flush valve on the discharge port after flush the water through the discharge port. A control mechanism monitor the water tank is provided for controlling buoyancy of the flush valve by releasing entrapped air to effect either a full flush or partial flush of water from the water tank through the toilet bowl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.