Liquid purification or separation – With repair or assembling means – Removable treatment part with normally disabled flow controller
Reexamination Certificate
2008-05-19
2009-10-27
Lithgow, Thomas M (Department: 1797)
Liquid purification or separation
With repair or assembling means
Removable treatment part with normally disabled flow controller
C210S248000, C210S444000
Reexamination Certificate
active
07608184
ABSTRACT:
A liquid filter, in particular for the lubricating oil of an internal combustion engine, having a housing with an inlet and an outlet formed from a housing pot having a substantially downwardly open filter element installation opening and a screw-on cover that closes the installation opening, and a filter element arranged in the housing, sealingly separating the inlet from the outlet. The screw-on cover has a drain for residual liquid present in the housing with a round drain opening arranged in the central axis of the housing. A device for opening and closing the drain opening is arranged in the area of the drain and connected to an end disk of the filter element so that it moves relative to the drain opening and opens the drain when the cover is unscrewed.
REFERENCES:
patent: 5888384 (1999-03-01), Wiederhold et al.
patent: 6706181 (2004-03-01), Baumann et al.
patent: 2002/0020660 (2002-02-01), Jainek et al.
patent: 195 38 883 (1997-04-01), None
patent: 196 44 647 (1998-04-01), None
patent: 299 21 543 (2001-05-01), None
patent: 0 839 563 (1998-05-01), None
patent: 1 327 471 (2003-07-01), None
patent: 1 419 809 (2004-05-01), None
patent: 1 479 427 (2004-11-01), None
European Search Report dated Aug. 21, 2008 with an English translation of the relevant portions (Eight (8) pages).
Blum Ralf
Kolczyk Markus
Weindorf Martin
Crowell & Moring LLP
Lithgow Thomas M
Mann & Hummel GmbH
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