System and method for automatic dispensing of a liquid
US11668083B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Sep 7, 2021 |
| Grant date | Jun 6, 2023 |
| Priority date | — |
| Expiry date | Sep 25, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03D2009/028
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system for automatic dispensing of a liquid into a toilet bowl includes a dispenser and a liquid refill cartridge. The dispenser mechanically interfaces with the toilet tank and connects with the water supply therein. When the toilet is flushed, fresh water flows from the float valve into the dispenser, and then back into the toilet bowl via the overfill tube. Within the dispenser, the water flow is constricted through an integral venturi before exiting. The venturi yields a pressure differential inside the dispenser that pulls liquid from the refill cartridge and into the outflow of water. A specified volume of liquid is drawn from the liquid refill cartridge and dispersed into the toilet bowl after every flush, without the use of electronics. The liquid may be an odor blocking liquid, a scented liquid, a colorant, enzymes, or a cleaning solution, among others.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.