<p>An open flow fluid filter has a pleated main filter element having a plurality of pleats in a closed loop having an outer perimeter defined by a plurality of outer pleat tips, and an inner perimeter defined by a plurality of inner pleat tips. The loop has a hollow interior extending along an axis. Fluid to be filtered flows through the main filter element from an upstream dirty side to a downstream clean side, and flows axially in the hollow interior. The main filter element has an axial flow passage extending along the axis and circumscribing the hollow interior and has a flow perimeter greater than the inner perimeter. A safety filter element downstream of the main filter element filters both the axial flow in the hollow interior and additional flow between the flow perimeter and the inner perimeter. A filter with additional flow is also provided. <IMAGE></p>
申请公布号
EP1203609(A1)
申请公布日期
2002.05.08
申请号
EP20010124182
申请日期
2001.10.11
申请人
FLEETGUARD, INC.
发明人
KALLSEN, KENT J.;JAROSZCZYK, TADEUSZ;FALLON, STEPHEN L.;LIU, Z. GERALD;MOY, JERALD J.;MORGAN, JEFFREY S.;CONNOR, MICHAEL J.;HECKEL, SCOTT P.;WAKE, JON S.;MR. GERALD P. EILING