Liquid purification or separation – Filter – Within flow line or flow line connected close casing
Reexamination Certificate
2005-04-05
2005-04-05
Cecil, Terry K. (Department: 1723)
Liquid purification or separation
Filter
Within flow line or flow line connected close casing
C210S489000, C210S497100, C210S500290
Reexamination Certificate
active
06874642
ABSTRACT:
The invention relates to a filter system (10) including a filter element (14) for filtering a fluid within a cylindrical case (12). The filter element is an absorbent tissue paper material in the form of a sheet compactly wound to form inner winding turns therein and to form a tubular cylinder inside the case (12) in a manner to partition a radially outside part (26) from a radially inside part (30). The axial ends of the filter element are capped by the closed ends (18, 20) of the case. The inner winding turns exhibit a contour which prevents the inner winding turns from unraveling inward. In operation, the fluid moves across the filter element (14) in a generally centripetal direction. The filter element (14) is characterized in that it is devoid of a central core.
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Hungler Joel
Malecot Yves
Breiner & Breiner L.L.C.
Cecil Terry K.
Georgia-Pacific France
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