Liquid dispensing system with enhanced filter
US6554579B2 · kind B2 · utility
46Cited by
13References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2002 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Mar 28, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D36/001
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system and method for reducing the time for charging a filter in a liquid dispensing system, such as one utilizing a positive displacement pump, is disclosed. The filter is located at the input side of the pump between the source of the liquid and the pump. In order to prevent air from the filter from entering the pump a reservoir is provided between the filter and the source of the fluid. Air from the filter is vented into the reservoir through a vent tube. A vacuum is used to draw air from the filter and, through the reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.