Vacuum filter
US5230722A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1988 |
| Grant date | Jul 27, 1993 |
| Priority date | — |
| Expiry date | Nov 29, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D50/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A final filter is provided for cleaning the cooling air drawn into the motor driven pump of a vacuum cleaner featuring a centrifugal separator. The final filter comprises a large area foam block filter and a sheet filter element received in a filter tray which is slideably received in a filter plenum disposed between the centrifugal separator and the motor/pump combination of the vacuum cleaner. The filter tray is supported horizontally within the filter plenum to define an inlet manifold and an outlet manifold having optimum flow characteristics and a detent is provided for snap locking the slideable filter tray within the filter plenum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.