Patent · US Active

Replaceable liquid filter

US7553409B2 · kind B2 · utility

1Cited by

6References

12Claims

0Family size

Assignee

MANN+HUMMEL GmbH · DE

Inventors

Helmut Luka · Erbach, DE
Markus Kolczyk · Schwäbisch Gmünd, DE
Dieter Schreckenberger · Erbach, DE
Rainer Loos · Freiberg, DE

Key dates

Filing date	Dec 15, 2005
Grant date	Jun 30, 2009
Priority date	—
Expiry date	Jan 29, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/7879
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A replaceable liquid filter, particularly for the lubricating oil of an internal combustion engine, including a substantially cup-shaped housing with a concentrically arranged outlet opening for filtered liquid and at least one inlet opening for the liquid to be filtered, and a filter element disposed in a sealing manner in the housing between the inlet opening and the outlet opening. The housing is connected to a top plate, and the top plate is connected to an end plate. The top plate encloses a displacement space which is disposed in an inlet chamber in the mating part, such that the inlet opening in the top plate is disposed in the region of the displacement space and/or a backflow check valve is disposed in the area of the outlet opening such that the backflow check valve is positioned axially outside the effective filter element surface.

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