Liquid purification or separation – With repair or assembling means
Reexamination Certificate
2008-03-21
2009-06-02
Lithgow, Thomas M (Department: 1797)
Liquid purification or separation
With repair or assembling means
C210S234000, C210S235000, C210S444000, C210S450000, C156S073100, C156S073500, C156S069000, C156S293000, C156S294000
Reexamination Certificate
active
07540957
ABSTRACT:
An assembly method and related subassembly for a water filter element in the housing of a replaceable filter cartridge provides for filter element insertion into the open bottom end of the housing and subsequent attachment of a retaining ring to the upper end of the element such that the element is secured against vertical drop-out until the bottom end of the cartridge can be enclosed with an end cap. The method and subassembly are particularly well adapted to cartridges in which the lower end cap is attached by spin welding. The enclosing end cap may also be provided with end rings to enhance the user's grip in cartridge installation and removal. The end rings may also be color coded for each of cartridge identification and matching to the filter head.
REFERENCES:
patent: 5045197 (1991-09-01), Burrows
patent: 5128035 (1992-07-01), Clack et al.
patent: 5328609 (1994-07-01), Magnusson et al.
patent: 5407571 (1995-04-01), Rothwell
patent: 5753107 (1998-05-01), Magnusson et al.
patent: 5826854 (1998-10-01), Janvrin et al.
patent: 6001249 (1999-12-01), Bailey et al.
patent: 6436282 (2002-08-01), Gundrum et al.
patent: 6458269 (2002-10-01), Bassett et al.
patent: 6533931 (2003-03-01), Reid
patent: 6576129 (2003-06-01), Reid
patent: 6776906 (2004-08-01), Reid
patent: 6977039 (2005-12-01), Knoll et al.
patent: 7138052 (2006-11-01), Reid
patent: 2005/0045552 (2005-03-01), Tadlock
Eserkaln Paul W.
Kaiser Kurt R.
Kurth Michael J.
Zerger Terry P.
Andrus Sceales Starke & Sawall LLP
Lithgow Thomas M
Pentair Filtration, Inc.
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