In-line filter with flange seal
US5672273A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1994 |
| Grant date | Sep 30, 1997 |
| Priority date | — |
| Expiry date | Dec 28, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D29/66
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter arrangement which is employed in a fluid conduit is formed of a filter formed of a permeable filter material connected to a flange seal having an annular portion for engaging with and coupling to the permeable filter medium, and a planar portion for forming a seal which prevents leakage at a flange-type coupler. The planar and annular portions of the flange seal are formed of teflon, as is the filter itself, which may be formed of multiple layers of teflon fabric or filter material, each having a respective filter permeability characteristic. The filter is coupled to the annular portion of the flange seal by a thread which is sewn through the various layers of the filter medium and the annular portion of the flange seal. The thread may itself be formed of teflon, such that the entire filter arrangement is formed of teflon and will resist corrosion. Collapse of the filter is prevented by a rigid tubular support which has apertures therethrough to facilitate flow of the fluid. The rigid support is prevented from being driven from within the filter, and the filter becoming inverted, by operation of a tube sheet installed at a flange coupler of the fluid conduit, and which has…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.