Adjustable universal flapper
US8122526B2 · kind B2 · utility
4Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 1, 2008 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Dec 29, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03D1/306
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A toilet flush flapper valve includes a flapper and a ballast with a vent hole for enabling air to escape from the ballast, the ballast is rotatably fixed to the flapper for enabling positioning of the vent hole for controlling buoyancy of the ballast in order to control closing time of said flapper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.