Patent · US Active

Filter element with guide shaft

US8747507B2 · kind B2 · utility

2Cited by

10References

9Claims

0Family size

Assignee

Carl Freudenberg KG · DE

Inventors

Uwe Haefner · Kehl, DE
Markus Koegel · Brohl, DE
Roland Dobner · Wald-Michelbach, DE
Andreas Breuer · Berlin, DE

Key dates

Filing date	Jun 21, 2012
Grant date	Jun 10, 2014
Priority date	—
Expiry date	Jun 21, 2032

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60H2003/065
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A Filter element for insertion into a housing of a ventilation unit or air conditioner, comprising a bellows with folds and a front side, which can face a wall of the housing, wherein the folds on the front side define fold cross-sectional surfaces, wherein to the front side at least one guiding slot is assigned and wherein a fold cross-sectional surface has a geometry in the area of a guiding slot that is different from the fold cross-sectional surface of a multiplicity of folds, is, in view of the task of providing an efficient filter element which, after problem-free manufacture is equipped with guiding slots into which guide pins can be inserted, characterized in that a multiplicity of regular fold walls is provided, wherein each two flanking walls flank the guiding slot.

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