초록

A pleat filter medium assembly wherein pleated fibrous filter medium forming troughs between opposed faces of adjacent filter medium pleats serve to include spacer inserts formed from intersecting sets of spaced strands of different cross-sectional thickness.

대표청구항 ▼

[ The invention claimed is:] [1.] A pleated filter medium arrangement for removing particulate matter from a fluid stream comprising: at least one sheet of porous filter medium having opposed faces and being pleated into a plurality of longitudinally extending spaced pleats of porous filter medium p

[ The invention claimed is:] [1.] A pleated filter medium arrangement for removing particulate matter from a fluid stream comprising: at least one sheet of porous filter medium having opposed faces and being pleated into a plurality of longitudinally extending spaced pleats of porous filter medium providing troughs between opposed filter medium faces of adjacent pleats; a plurality of longitudinally extending flow through individual and separate spacer inserts, each insert including a longitudinally extending body portion sized to be inserted into nesting relation with and engaging in one of said troughs between said opposed faces of adjacent pleats of porous filter medium to extend longitudinally substantially along the length of said trough to separate said adjacent pleats, said longitudinally extending body portions of said spacer inserts, each including spaced strand sets of preselectively differing cross-sectional thickness with at least certain of which extend in transversely crossing relation to enhance pleated filter medium spacing and particulate carrying fluid stream flow therethrough.