Bag filter rim system
US5989421A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1997 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Oct 3, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2201/34
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter assembly (10) with a filter housing (12) and a bag-type filter element (14). A collar (36) is disposed inside the housing below an opening (42) through which a process stream is introduced into the filter assembly. The filter element includes a filter bag (70) to which a sealing ring (72) is attached. The sealing ring is formed to define a channel (84) in which the collar is seated. The sealing ring also has a lip (86) that snap secures against a complementary stepped surface (60) formed around the collar. A gasket (85) attached to the sealing ring forms a liquid-tight barrier between the collar and the sealing ring. The collar is also formed with a boss (62). The sealing ring defines a alignment notch (88). In order to seal the filter element in place, boss (62) must seat in alignment notch (88); this ensures that when the filter element is secured in place, it is properly aligned with the other components of the filter assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.