Air filter for extraction apparatus
US6537337B2 · kind B2 · utility
3Cited by
16References
25Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | May 25, 2001 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | May 25, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D46/58
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter for air extraction apparatus is disclosed, which is assembled from a porous material arranged to collect contaminants. The filter comprises a bag with a constricted inlet for receiving contaminated air. The bag is formed from a plurality of envelopes having filtering side walls and each of the envelopes has at least one orifice connected to an orifice of an adjacent envelope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.