Filter

Details Filter Filter

2005-11-29

2005-11-29

Drodge, Joseph (Department: 1723)

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Transparent

C210S443000, C210S450000, C210S454000, C210S541000, C210SDIG017, C220S600000, C220S628000

Reexamination Certificate

active

06969458

ABSTRACT:
A filter having a thin metal flanged embedded within an open wall portion of a transparent plastic housing. The metal flange is permanently and non-detachably embedded within the wall and connected to a filter cover plate to create a fluid-tight seal. The resulting transparent spin-on filter allows a user to visually inspect the condition of the circulating fluid and filter without removing the filter from an operating system.

REFERENCES:
patent: 4021342 (1977-05-01), Schacht et al.
patent: 4992166 (1991-02-01), Lowsky et al.
patent: 5171430 (1992-12-01), Beach et al.
patent: 5236579 (1993-08-01), Janik et al.
patent: 5301958 (1994-04-01), Covington
patent: 5690814 (1997-11-01), Holt
patent: 5948248 (1999-09-01), Brown
patent: 2004/0007520 (2004-01-01), Rosendahl et al.

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