Apparatus and method for protection of pumps used for delivery of air- or moisture-sensitive liquids
US5337651A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1993 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Mar 18, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/734
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A means and method for protecting the moving parts of a pump that is used to pump air- or moisture-sensitive liquids, comprising blanketing the wetted parts of the pump with an inert medium and/or admixing the process liquid with a low vapor pressure liquid component effective for inhibiting corrosion or particulate formation. In another aspect, the invention relates to an apparatus for protecting the wetted, moving parts of pumps used to pump air- or moisture-sensitive liquids. The apparatus provides a mantle within which an inert medium is flowed around the moving, wetted pump parts to continually purge them of any air or moisture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.