Patent · US Expired

Filter device

US7022228B2 · kind B2 · utility

11Cited by

4References

8Claims

0Family size

Assignee

HYDAC FILTERTECHNIK GMBH · DE

Inventors

Stefan Hennes · Neunkirchen (Saar), DE
Michael Sakraschinsky · Sankt Ingbert, DE
Patrik Maurer · Pocking, DE
Norbert Sann · Riegelsberg, DE

Key dates

Filing date	Aug 2, 2002
Grant date	Apr 4, 2006
Priority date	—
Expiry date	Aug 2, 2022

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2201/4076
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter device includes a pot-shaped filter housing (1) that defines a longitudinal axis along which a filter element (13) can be inserted into and removed form the filter housing (1). A retaining device detachably retains the filter element (13) in the filter housing (1) and has first and second retaining elements on the inner side of the filter housing (1) and on the filter element (13) and interacting with one another. At least one set of the retaining elements has a shape coaxial to the longitudinal axis of the filter housing (1) and forms at least a part of a thread. When the filter element (13) is rotated about its longitudinal axis, it is locked in a form-fit.

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