Stock material or miscellaneous articles – Structurally defined web or sheet – Nonplanar uniform thickness material
Patent
1987-02-19
1991-06-18
Robinson, Ellis P.
Stock material or miscellaneous articles
Structurally defined web or sheet
Nonplanar uniform thickness material
428182, 428192, 428194, 428167, 156 69, 156293, 156295, 55497, 55498, 55510, 55514, 55521, 55529, 55502, 55DIG5, 2104932, 2104935, 210487, 264DIG48, B32B 328, B01D 2700, B65B 700
Patent
active
050248707
ABSTRACT:
The invention includes a filter element (10) having a pair of end caps (12) with pleated, corrugated filter media (14) spanning therebetween. The filter media (14) is sealed or potted into the end caps (12) with a potting material ( b 16). To ensure substantially uniform penetration of the plates of the media (14) by the potting material (16), the edges of the media (14) are configued to eliminate "linear check valve" action between pleats. Several edge patterns can be used to minimize the formation of linear check valves, including a saw tooth pattern; sine wave pattern; vertical edge corrugations; flat edge regions; and saw kerfs in the edges of the media.
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Donaldson & Company, Inc.
Loney Donald J.
Robinson Ellis P.
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