Apparatus for filtering and coalescing liquids
US5318704A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1993 |
| Grant date | Jun 7, 1994 |
| Priority date | — |
| Expiry date | Apr 28, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/186
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus for removing contaminants from a liquid comprises a casing and a tubular filter dividing the casing into two compartments. The tubular filter is formed of fibers attached at each end to end supports which are movable axially relative to one another and rotable relative to one another about the longitudinal axis of the filter. A helical spring is disposed within the tubular filter and is so dimensioned that it does not close when the end supports are in their closest operational position. The spring resists inward movement of the fibers when the end supports are moved axially towards each other and rotated to twist the fiber, thereby preventing the compartment defined by the interior of the tubular filter from tending to close.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.