Liquid purification or separation – Filter – Receptacle and modified spacing surface or support for...
Patent
1991-03-28
1992-12-22
Dawson, Robert A.
Liquid purification or separation
Filter
Receptacle and modified spacing surface or support for...
210488, 21049701, 55502, B01D 2708
Patent
active
051731860
ABSTRACT:
A coreless filter cartridge, and apparatus for adapting a filter housing to support such coreless filter cartridges. A coreless filter cartridge has an elongate array of filtering material which defines an interior cavity. The array is surrounded by a sheath of perforated paper. The ends of the array and sheath are embedded into polyurethane end-caps. The filter housing is adapted to accept coreless filter cartridges by adding a rigid, perforated standpipe that uses a bushing to fit over a housing fluid egress spud. The coreless filter cartridge is placed over the standpipe and secured in place by a retaining spider or by the housing cover, which exerts bias via a compression spring and compression cup. Gaskets on each end-cap prevent fluid by-pass and a stand-off cup is located near the base of the standpipe to provide a surface against which the end-cap gasket can seat.
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Holden Robert M.
Spafford Scott E.
Allied Filter Engineering, Inc.
Dawson Robert A.
Millard W. L.
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