Patent · US Expired

Filter insert

US5958097A · kind A · utility

43Cited by

7References

6Claims

0Family size

Assignee

Firma Carl Freudenberg · DE

Inventors

Ulrich Schlor · Darmstadt, DE
Udo Michaelis · Weiterstadt, DE
Jorgen Knudsen · Angelbachtal, DE

Key dates

Filing date	Jun 22, 1998
Grant date	Sep 28, 1999
Priority date	—
Expiry date	Jun 22, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S55/05
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter insert. The filter insert includes an accordion fold pack that is made of a filter material and is joined to a filter frame. The material of the filter frame is injected in a flowable state into the folds of the accordion fold pack which are open in the on-coming flow direction of the medium to be filtered. The material is subsequently hardened during automatic claw fixation with the fold walls. The entire peripheral edge of the accordion fold pack sealingly overlaps the outer boundary surfaces of the filter frame, and is designed as a sealing device.

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