Patent · US Expired

Filter arrangement

US4828590A · kind A · utility

5Cited by

1References

6Claims

0Family size

Assignee

Draegerwerk Aktiengesellschaft · DE

Inventors

Wolfgang Eckstein · Sereetz, DE
Karl-Heinz Schirk · Lübeck, DE

Key dates

Filing date	May 10, 1988
Grant date	May 9, 1989
Priority date	—
Expiry date	May 10, 2008

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF24F13/28
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter arrangement for cleaning the interiors of ventilated vehicles, containing a coarse dust preseparator, a submicron particulate filter, and a gas filter, is to be improved so that the necessary filter lifetime can be adapted to the gas filter lifetime and a changing of the filters is necessary only when both are used up at approximately the same time. For this, a coarse dust preseparator or cyclone filter of high separation efficiency is mounted on an outer housing, downstream from which is at least one submicron particulate filter accommodated in a common filter housing and a gas filter as a filter module.

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