Device enabling a fluid dispenser to operate both the rightway up and upside-down
US6186372A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1999 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Jul 12, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/0059
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A device enabling a fluid dispenser to operate both in the upside-down position and in the rightway-up position, the dispenser comprising a fluid tank, and a dispenser member having an inlet and a dip tube, said device having a chamber in communication with said inlet of the dispenser member, said chamber having a top inlet and a bottom inlet that are selectively closable by respective top and bottom check valves, the top check valve having a moving valve element suitable for closing the top inlet of the chamber in the rightway-up position, wherein the bottom check valve has a moving valve element that floats, being of a density that is lower than the density of the fluid, and being adapted to close the bottom inlet of the chamber in the upside-down position when the chamber is filled with the fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.