| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 07.99 |
| PATENT ASSIGNEE | W.L. Gore & Associates |
| PATENT CLAIMS |
A method of cleaning cleanable filtration media - Providing cleanable filter element comprising a support structure having plurality of longitudinal members & filtra tion media consisting of expanded PTFE membrane attached to at least a portion of said members, thereby forming plurality of pleat tips with filtration media between the pleat tips - Installing said element in a gas filtration system such that during filtering of gas said media is positioned between adjacent pleat tips in a concave orientation with respect to the direction of filtering, so that filtrate from the gas collects on the concave side of media - Inducing a reverse gas pulse in the direction opposite the direction of filtering to invert the filtration media in a convex orientation beyond the pleat tips so that filtrate separates from the filtration media |
| PATENT PHOTOCOPY | Available on request |
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