Pressure activated automatic source switching dispenser system
US8479951B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2012 |
| Grant date | Jul 9, 2013 |
| Priority date | — |
| Expiry date | Sep 4, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B12/081
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A dispenser includes a housing that holds first and second refill units, each including a product container and a valve assembly that receives product from the product container. An actuator mechanism associates with the first refill unit and is actuated to force air into the associated valve assembly and dispense product from the valve assembly until such time as the product container associated with that valve assembly is empty. When empty, a float valve of the valve assembly prevents the actuation of the actuator mechanism and forces the actuator mechanism to associate with the second refill unit. While so associated, the first refill unit can be replaced, thus, helping to ensure that the dispenser does not run out of product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.