Truss type high pressure center support for liquid filtration

Liquid purification or separation – Filter – With central pervious tubular receiver

Reexamination Certificate

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Details

C210S437000, C210S493100, C210S440000, C210S167020

Reexamination Certificate

active

07980396

ABSTRACT:
A central support for a liquid filter is described. The support has a truss element disposable centrally in the liquid filter to provide a crush-resistant structure supporting a filter media of the liquid filter, elongated straight members of the truss element, connected at joints to form a coplanar cross section, and longitudinal members of the truss element, connecting the coplanar cross section and additional coplanar cross sections in a column-like configuration. The contact surfaces of the truss element for interfacing with the filter media are adapted to spread forces on the filter media over a desired surface area.

REFERENCES:
patent: 4324571 (1982-04-01), Johnson, Jr.
patent: 5736045 (1998-04-01), Bies et al.
patent: 6401938 (2002-06-01), Schewitz
patent: 6962256 (2005-11-01), Nguyen et al.
patent: 2009/0057221 (2009-03-01), Bridges
patent: 44 09 970 (1995-09-01), None
patent: 196 23 326 (1997-12-01), None
patent: 2006/112853 (2006-10-01), None
European search report dated Dec. 18, 2009.

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