Liquid purification or separation – Filter – Supported – shaped or superimposed formed mediums
Patent
1984-08-30
1986-10-07
Fisher, Richard V.
Liquid purification or separation
Filter
Supported, shaped or superimposed formed mediums
2104935, 55500, 55521, 493404, 493941, B01D 2706
Patent
active
046158049
ABSTRACT:
A spacing and scoring tool for creating high density pleated filter media, and the media therefor is disclosed herein. A blade (14) having curvilinear portions (22, 22a) and linear portions (21, 21a) create an island pattern when scored into flat or corrugated media (16). The island are preferably located centrally upon the corrugation peaks (18) either at every peak or periodically. The resulting pattern when foled produces filter media with automatic pleat spacing and this structure can be used at very high pleat spacings beyond 10 pleats per inch. The blade (14) is solid on its contact face at the curvilinear portions for preventing island collapse when the media is folded.
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Donaldson & Company, Inc.
Fisher Richard V.
Millard Wanda L.
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