Liquid purification or separation – Filter – Within flow line or flow line connected close casing
Reexamination Certificate
2006-01-10
2006-01-10
Therkorn, Ernest G. (Department: 1723)
Liquid purification or separation
Filter
Within flow line or flow line connected close casing
C210S447000, C210S453000, C210S455000, C210S457000, C210S493200, C210S497010
Reexamination Certificate
active
06983851
ABSTRACT:
A filter assembly includes housing enclosing a replaceable filter element. A support core is provided in the housing, and includes an extension and locking assembly. The element includes a ring of filtration media with a pair of end caps. The first end cap includes a central opening to receive the support core. The extension and locking assembly prevents the cover of the housing from being attached to the housing body without a proper filter element installed. The extension and locking assembly includes a bypass member and a locking member, which are in locking engagement when an element is absent in the housing. The second end cap includes internal protrusions which engage the locking member when the filter element is installed to disengage the bypass member from the support core, and allow the element to be inserted and the cover to be installed.
REFERENCES:
patent: 2486711 (1949-11-01), Harris
patent: 3698562 (1972-10-01), Farrow et al.
patent: RE29447 (1977-10-01), Farrow et al.
patent: 4522712 (1985-06-01), Fischer et al.
patent: 4536291 (1985-08-01), Hoffman et al.
patent: 4692245 (1987-09-01), Church et al.
patent: 4754896 (1988-07-01), Roltgen et al.
patent: 4824564 (1989-04-01), Edwards et al.
patent: 5045192 (1991-09-01), Terhune
patent: 5154823 (1992-10-01), Ma et al.
patent: 5186829 (1993-02-01), Janik
patent: 5244571 (1993-09-01), Church et al.
patent: 5413712 (1995-05-01), Gewiss et al.
patent: 5468386 (1995-11-01), Ardes
patent: 5770054 (1998-06-01), Ardes
patent: 5770065 (1998-06-01), Popoff et al.
patent: 5855780 (1999-01-01), Dye et al.
patent: 5948248 (1999-09-01), Brown
patent: 6053334 (2000-04-01), Popoff et al.
patent: 6235194 (2001-05-01), Jousset
patent: 6554139 (2003-04-01), Maxwell et al.
patent: 824484 (1969-10-01), None
patent: 296 23 867 (1992-10-01), None
patent: 4111407 (1992-10-01), None
Copy of the Communication Relating to the Results of the Partial International Search in corresponding PCT Case No. PCT/US01/14759.
Copy of Notification of the International Search Report or the Declaration, dated Jan. 21, 2002, in corresponding PVT Application No. PCT/US01/14759.
Copy of International Application No. WO 92/18397 entitled “Re-Usable Packing Container for Filter Elements” published Oct. 29, 1992.
Partial translation of WO 92/18397 beginning on p. 7, last paragraph and ending after the first partial paragraph on p. 9.
Copy of International Publication No. WO 01/21278 dated Mar. 23, 2001.
Clausen Michael D.
Knight Steven R.
Maxwell Martin C.
Hunter Christopher H.
Parker Intangibles LLC
Therkorn Ernest G.
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