Patent · US Expired

Filter assembly

US6224758A · kind A · utility

16Cited by

12References

7Claims

0Family size

Assignee

Filterwerk Mann & Hummel GmbH · DE

Inventors

Herbert Jainek · Heilbronn, DE
Jaroslav Pavlin · Freiberg, DE
Roland Wiederhold · Cologne, DE

Key dates

Filing date	Apr 7, 2000
Grant date	May 1, 2001
Priority date	—
Expiry date	Apr 7, 2020

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D35/18
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter assembly for a liquid to be filtered, especially for use in a conditioning unit for the lubricating oil of a motor vehicle, including a filter cartridge (8) concentrically arranged around a center tube (9) through which a liquid stream may flow. The filter assembly includes a bypass valve (11) through which unfiltered liquid can flow into the center tube (9) if the filter cartridge becomes clogged. The bypass valve (11) is durably affixed by a valve plate (21) so that a valve body (16) is urged against the valve plate (21) by a valve spring (19) supported by supports (20) extending axially in the center tube (9).

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