Compact foam at a distance pumps and refill units
US9687121B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2014 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Oct 10, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B9/047
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Exemplary foam pumps, refill units and foam dispenser systems are disclosed herein. One exemplary refill unit includes a container and a foam pump secured to the container. The foam pump includes an outer housing, an inner housing and a cap. An air pump chamber is formed at least in part by the inner housing. In addition, a liquid pump chamber is formed at least in part by the inner housing. At least a portion of the liquid pump chamber is also formed by the outer housing. An air outlet is located at the bottom of the air pump chamber, which connects to an air outlet passage formed at least in part by the outer housing and the inner housing. Air and liquid dispense tubes are included as well as a mixing chamber located remotely from the foam pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.