Patent · US Expired

Method for manufacturing a filter insert

US5863482A · kind A · utility

7Cited by

7References

1Claims

0Family size

Assignee

Firma Carl Freudenberg · DE

Inventors

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

Key dates

Filing date	Aug 13, 1997
Grant date	Jan 26, 1999
Priority date	—
Expiry date	Aug 13, 2017

Classification

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

Abstract

A method for manufacturing a filter insert, and the filter insert so manufactured. 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.