Integrated system for filtering and dispensing fluid having fill, dispense and bubble purge strokes
US5262068A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 1991 |
| Grant date | Nov 16, 1993 |
| Priority date | — |
| Expiry date | May 17, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D35/26
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An integrated system and method are disclosed for filtering a fluid and for dispensing a desired volume of the fluid. The integrated system includes a feed pump sub-assembly for receiving fluid and for directing the fluid through a filter. A filtration sub-assembly is joined with the feed pump sub-assembly for receiving fluid from the feed pump sub-assembly and for housing the filter. A dispense pump sub-assembly is integrally joined with the filtration sub-assembly and defines a dispense chamber for receiving filtered fluid from the filtration sub-assembly. The dispense pump sub-assembly includes a dispensing means which is moveable from a fill position to a purge position for purging at least a portion of any gas bubbles from the dispense chamber. The gas bubbles are purged through a purge outlet disposed above a fluid inlet and a fluid outlet of the dispense chamber. The dispensing means is also moveable from the purge position to a dispense position for dispensing a desired volume of the fluid from the integrated system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.