Patent · US Expired

Filter arrangement and a method for its manufacture

US6179891A · kind A · utility

17Cited by

11References

13Claims

0Family size

Assignee

Firma Carl Freudenberg · DE

Inventors

Jorgen Knudsen · Angelbachtal, DE
Wolfgang Schmidt

Key dates

Filing date	Aug 4, 1998
Grant date	Jan 30, 2001
Priority date	—
Expiry date	Aug 4, 2018

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D46/10
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter arrangement made up of an accordion fold pack which is sealingly arranged in a housing. The housing is deep drawn in one piece from a polymeric material sheet. A limit stop is punched out of the base of the housing. A seal surrounds the accordion fold pack and seals against the housing.

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