Vented non-collapsing containers, dispensers and refill units having vented non-collapsing containers
US10160590B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2015 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | Feb 23, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1087
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Exemplary embodiments of dispensers and refill units are disclosed herein. An exemplary refill unit for a soap, sanitizer or lotion includes a non-collapsing container. The non-collapsing container includes a neck. An annular projection is located at least partially on the neck. A one-way valve is located proximate the annular projection. The one-way valve allows air to flow into the non-collapsing container once the vacuum pressure in the container reaches the cracking pressure of the one-way valve and the one-way valve prevents liquid from flowing out of the annular projection. In addition, a pump for pumping the contents of the container out of the container is also included.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.