Soap dispensing units with anti-drip valve
US8678244B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2012 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Mar 2, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B12/122
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A soap dispenser can be configured to dispense an amount of liquid soap, for example, upon detecting the presence of an object. Certain embodiments of the dispenser include a housing, reservoir, pump, and nozzle. In some embodiments, the dispenser includes a bypass passage, which can facilitate priming of the pump. In certain embodiments, the dispenser is configured to inhibit or avoid the formation of an air bubble that could obstruct the liquid soap from entering the pump. In some embodiments, the pump includes engaging gears, which can include a plurality of teeth with substantially pointed tips. In certain embodiments, the nozzle comprises a one-way valve, such as a duckbill valve. Some embodiments of the one-way valve are shaped or otherwise configured to provide certain biases to the valve, which can, for example, facilitate rapid opening and closing of the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.