Liquid filter assembly with concentric filter sleeves of bag-type media
US6712967B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Oct 8, 2002 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Oct 8, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/34
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter element assembly has at least two cylindrically shaped and concentrically arranged filter media sleeves each connected at one end thereof to an inlet plate and each connected at the other end to a closed end terminal plate. Openings are provided in the inlet plate to permit entry of liquid to be filtered into the annular space between the filter sleeves. The closed end terminal plate prevents flow of unfiltered liquid from the annular space between the sleeves so as to force the liquid through the porous media of the sleeves to effect filtration. The inlet plate includes a central area that is recessed in relation to its outer edge to define an inlet chamber capped by a planar housing lid. The inlet chamber communicates with the inlet conduit via an opening in the central area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.