Patent · US Expired

Filter cartridge

US6027542A · kind A · utility

7Cited by

7References

14Claims

0Family size

Assignee

Firma Carl Freudenberg · DE

Inventors

Andreas Brandhofer · Birkenau, DE
Thomas Schroth · Worms, DE
Jorgen Knudsen · Angelbachtal, DE
Wolfgang Schmidt

Key dates

Filing date	Sep 25, 1998
Grant date	Feb 22, 2000
Priority date	—
Expiry date	Sep 25, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S55/31
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter cartridge has a frame made of tough material, which sealingly surrounds an accordion fold pack on its circumferential side. The frame is made of assemblable, plate-shaped frame elements and has, on the circumferential side along the lower and/or upper edge of the frame, a tongue, the tongue being insertable in a latticed holder having a U-shaped profile. A viscous joining compound is used to affix the tongue in place. The tongue is formed by strip-shaped tongue elements, each tongue element being joined to a frame element, wherein the adjacent ends of the tongue elements are sealingly fastened to each other by connecting corner pieces.

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