Wrap member having openings
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 12, 1993
Issued Date -
N/A
app pub date -
Jul 22, 1991
filing date -
Jun 15, 1988
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A filter includes a pleated filter element having longitudinally extending pleats and a wrap member wrapped around the filter element. The wrap member is joined to the peaks of the pleats and has openings for increasing the dirt capacity of the filter. The filter element may be a composite of a filter layer, upstream and downstream support and drainage layers, a cushioning layer between the upstream support and drainage layer and the filter layer, and polymeric beads on the downstream side of the downstream support and drainage layer. An extruded polymeric mesh may comprise one or both of the upstream and downstream support and drainage layers.
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