Down-stroke dispenser
US6820287B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2002 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | May 10, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03D2009/028
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A dispenser is provided for dispensing cleaning chemicals such as toilet bowl cleaners. It has a dosing chamber containing therein a floating shuttle that seals a lower opening in the dosing chamber and floats up there from as an aliquot of chemical is prepared for release during the next cycle. There is also a float controlled external valve head at a lower end of the dispenser for alternately opening and closing a lower opening in the dosing chamber. The level of water in the toilet tank controls the movement of the valve head, and dispensing of the cleaner chemical controls movement of the floating shuttle. A grommet provides a valve seat for both the floating shuttle and valve head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.