Liquid purification or separation – Filter – Within flow line or flow line connected close casing
Reexamination Certificate
2008-04-22
2008-04-22
Therkorn, Ernest G. (Department: 1723)
Liquid purification or separation
Filter
Within flow line or flow line connected close casing
C210S447000, C210S453000, C210S455000, C210S457000, C210S493200, C210S497100
Reexamination Certificate
active
11668528
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.
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Clausen Michael D.
Knight Steven R.
Maxwell Martin C.
Hunter Christopher H.
Parker Intangibles LLC
Therkorn Ernest G.
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