Self-cleaning upside-down air filter
US5322534A · kind A · utility
23Cited by
9References
7Claims
0Family size
Inventor
Key dates
| Filing date | Feb 11, 1993 |
| Grant date | Jun 21, 1994 |
| Priority date | — |
| Expiry date | Feb 11, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2275/203
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A self-cleaning air filter is formed by placing a flexible filter bag in an upside-down position with its open end firmly supported. Air to be cleaned is pulled upwardly through the bag. When the air stream is shut off, the bag collapses, discharging accumulated particulate material into the space beneath it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.