Electrically conducting filter cartridge

摘要

In a filter cartridge, in which a plurality of tubes (1, 3, 4) concentrically arranged one within the other having intermediate filter materials are glued into end discs (2), a reliable electrical contact between these parts is to be ensured. This is achieved by spring elements (6). In a spring only between the inner (1) and central tube (3), a formation spring-tensioned radially outwards of an outer tube (4) having longitudinal slots is additionally required. In an alternative solution, the central tube (3) is clamped in an annular groove of the end disc (2) in a contact-making manner.