Donaldson Comapny, Inc.

Joseph Israel

Andrew J Dallas

Robert M Rogers

Brad E Kahlbaugh

Keh B Dema

Derek Owen Jones

Gregory L LaVallee

Michael A Madden

Jon Dennis Joriman

Chuanfang Yang

Paul L Kojetin

Linda M Olson

Douglas A Wersal

Jeremy Thomas Exley

Eugene F Dunn, Iii

Eugene Dunn

Lorraine Keating-Klika

Andrew J Untz

Gregory L Lavallee

A filter medium for use in filtering a mobile fluid made from at least a bicomponent fiber. Other fibers, particles, or other materials can also be entrained in the filter medium. The filter medium has a substantial thickness compared to filters of the prior art. The fiber length and diameter dimensions are selected to obtain desired filter characteristics including thickness, basis weight, pore size, filtration efficiency, pressure drop, burst strength, and manufacturing efficiency. Further, a multilayer filter medium can be provided with ease. Each layer can have a different composition, pore size, basis weight, and so forth, thus providing the ability to build multiple functionality into the filter media of the invention.

Formed filter element

An arrangement separating a hydrophobic liquid phase from gaseous stream, for crankcase ventilation arrangements as described. The arrangement includes a media stage including media formed from a vacuum forming process and including at least 50%, by weight, bi-component fiber therein. Useable media formulations and arrangements are described.

Aerosol separator

Growing community of inventors

St. Louis Park, MN, United States of America

Joseph Israel