Patent · US Expired

Filter device

US6932900B2 · kind B2 · utility

1Cited by

4References

11Claims

0Family size

Assignee

HYDAC FILTERTECHNIK GMBH · DE

Inventors

Norbert Sann · Riegelsberg, DE
Martin Reik · Saarburg, DE
Stefan Hennes · Neunkirchen (Saar), DE
Karl-Heinz Leichner · Friedrichsthal, DE

Key dates

Filing date	Jan 3, 2001
Grant date	Aug 23, 2005
Priority date	—
Expiry date	Feb 6, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2201/188
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter device includes a filter housing (10) in which at least two filter elements (12, 14) with differing filter grades of filter material (16) are arranged. The filter elements are partially separated from each other by a separating device (18), with a through channel (24) of predetermined cross-section for a hydraulic connection between neighboring filter chambers (20, 22),. The filter chambers arranged prior to the filter materials (16) in the flow direction of the fluids for filtering. The filter device permits a combination of main- and side-stream filters in the smallest possible space, whereby very good purity levels for the filtered fluid are nevertheless achieved.

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