Liquid purification or separation – Casing divided by membrane into sections having inlet – Each section having inlet
Reexamination Certificate
2007-12-25
2007-12-25
Menon, Krishnan S. (Department: 1723)
Liquid purification or separation
Casing divided by membrane into sections having inlet
Each section having inlet
C210S321800, C210S321850, C210S323200, C210S403000, C096S004000, C096S007000, C096S010000
Reexamination Certificate
active
11404164
ABSTRACT:
A coupler for a spiral membrane filtration element having a spiral membrane enclosed within a rigid outerwrap includes a center support, a plurality of spokes extending outwardly from the center support, a circular rim coupled with the spokes, with the face of the rim being perpendicular to the axis of the overwrap. The rim includes a channel on its face for receiving a compressible seal, and a plurality of receptacles around its outer surface for joining two face-to-face adjacent couplers when a pair of aligned keepers is placed in each receptacle. Exemplary embodiments of the coupler and filtration elements and filtration assemblies are provided, as well as an associated method.
REFERENCES:
patent: 4126339 (1978-11-01), Thompson
patent: 5470469 (1995-11-01), Eckman
patent: 5851267 (1998-12-01), Schwartz
patent: 2003/0024868 (2003-02-01), Hallan et al.
Colby David M.
Franks Alan M.
Hsieh Chang-Li
Lesan Frederick K.
Mukherjee Anjan Kumar
Koch Membrane Systems, Inc.
Menon Krishnan S.
Stinson Morrison & Hecker LLP
Young Mark C.
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