Fluid filter medium including a tubular fabric member
US5013438A · kind A · utility
Inventor
Key dates
| Filing date | Nov 14, 1989 |
| Grant date | May 7, 1991 |
| Priority date | — |
| Expiry date | Nov 14, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/34
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved fluid filter medium, including a fabric member having a plurality of folds that are seamed at the top and bottom to form a fabric sleeve with pockets, such pockets being configured to enclose the leaves of a filter element frame. A tubular seal is seemed to each end of the fabric sleeve and filled with a resilient material to form a compressible seal. Each tubular seal is configured to be compressed between the central cylindrical perforated core of the filter element frame and a sealing plate or flange such that, upon compression, the tubular seal forms a seal between the sealing plates or flanges and the fabric sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.