Patent · US Active

Filter element with a guide duct that penetrates its pleated walls

US8979962B2 · kind B2 · utility

0Cited by

2References

9Claims

0Family size

Assignee

Carl Freudenberg KG · DE

Inventors

Uwe Haefner · Kehl, DE
Dieter Unrath · Weinheim, DE
Roland Dobner · Wald-Michelbach, DE

Key dates

Filing date	Aug 30, 2012
Grant date	Mar 17, 2015
Priority date	—
Expiry date	Mar 5, 2033

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2265/06
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter element for insertion into a housing of a ventilation or air-conditioning system, including a bellows with pleated walls and pleat tips and a front face, which can be faced towards a wall of the housing, wherein a guide duct is allocated to the front face, wherein the guide duct is formed by at least one breakthrough in the pleated walls and/or in a side strip that is hemming the front face, in view of the object to indicate a mechanical coding for a filter element which ensures a unique allocation of a filter element to a housing, wherein the filter element is provided with breakthroughs and wherein the mechanical strength of pleated walls and side strips is impaired as little as possible by the breakthroughs, characterized in that the breakthrough is provided with a reinforcing.

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