Patent · US Expired

Filter cartridge

US8376147B2 · kind B2 · utility

3Cited by

11References

24Claims

0Family size

Assignee

BRITA LP · US

Inventors

Ernst Reder · Hahnheim, DE
Ingo Mohr · Bad Marienberg, DE
Klaus-Peter Weber · Salmünster, DE
Jorg Lindloff · Taunusstein, DE

Key dates

Filing date	Jul 9, 2003
Grant date	Feb 19, 2013
Priority date	—
Expiry date	Jun 7, 2025

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D27/08
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to a filter cartridge (1) which comprises a firmly fixed lid (10) and has a long service life. Said lid (10) is embodied in such a way that the bottom (11) of the lid extends towards the peripheral wall (3) of the cartridge container to join the lateral wall (16) of the lid, by means of an inwardly curved edge section (14), the curved edge section (14) and the lateral wall (16) in the form of a strip joining in the forming region to form an inwardly tapered common wall section (15). In this way, the region fixing the lateral wall (16) to the peripheral wall (3) is subjected only to a tensile load, minimizing the risk of shear fracture, and the inner pressure in the region of the common wall section (15) presses the wall section against the peripheral wall (3), thus exerting an additional sealing force.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.