Filter apparatus
US4437991A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1982 |
| Grant date | Mar 20, 1984 |
| Priority date | — |
| Expiry date | Apr 23, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D35/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter apparatus for filtering a liquid containing solid materials comprises a filter member made of a flexible sheet having a number of through holes which prevent passage of solid materials while allow passage of the liquid thereby filtering the liquid, first wipers which are slidably arranged over the surface of the filter member at the liquid inlet side and which scrape off the solid materials deposited on the surface of the filter member upon sliding movement thereof; second wipers which are slidably arranged over the surface of the filter member at the liquid outlet side; and driving mechanism for sliding the first and second wipers on the surfaces of the filter member at the same speed in the same direction so that the first and second wipers oppose each other with the filter member disposed therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.