Filter element for a rotatable disc filter
US4190544A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1978 |
| Grant date | Feb 26, 1980 |
| Priority date | — |
| Expiry date | Nov 30, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D33/23
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter element is provided for use with a pressure disc filter. The inventive filter element includes a metal plate having a concave surface. A washer is provided for mounting the metal plate within a pressure disc filter while orienting the concave surface so that it faces upwardly within the pressure disc filter. A clamping ring is provided for holding a filter material above the concave surface. The inventive concept also includes a synthetic resin shield composed of one or more parts and fastened to the concave surface of the metal plate so as to protect this surface of the metal plate against contact with corrosive substances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.