Vented refill units and dispensers having vented refill units
US9596963B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2015 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Aug 18, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1087
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Exemplary embodiments of vented refill units and dispensers having vented refill units are disclosed herein. An exemplary refill unit includes a non-collapsing inverted container. The container has a neck located at the bottom of the container. A pump is secured to the neck. The pump has a housing that has a cylindrical outside surface. In addition, the housing has an attachment mechanism for attaching the pump to a venting insert. The venting insert has a cylindrical inside surface and a cylindrical outside surface. At least a portion of the venting insert is located within the neck. An air passage is located between the pump housing and the cylindrical inside surface of the venting insert. One or more apertures are located through the venting insert. A one-way air inlet valve is located proximate the one or more apertures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.