Tubular filter primarily intended for filtration of liquids
US4639318A · kind A · utility
6Cited by
7References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 7, 1984 |
| Grant date | Jan 27, 1987 |
| Priority date | — |
| Expiry date | Nov 7, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D39/2082
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A tubular filter which is primarily intended for filtration of liquid flowing substantially radially towards the interior of the filter. The filter comprises two layers (10, 11) of mineral wool. An interior layer (10) has the fibres oriented substantially concentrically to the tube axis and an outer filter layer (11) of mineral wool has the fibres oriented substantially radially to the tube axis. The material of the tubular filter must be arranged so that its density increases from the outer portion of the tubular filter towards its inner portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.