Donaldson Comapny, Inc.

Timothy O Winters

Robert M Rogers

Brad E Kahlbaugh

Wijadi Jodi

Giancarlo M Izzi

Keith Alderson

Daniel Eric Adamek

Brian Edward Tucker

Andrew J Dallas

Bradly G Hauser

Davis B Moravec

Aflal Rahmathullah

Joseph M Block

Paul Anthony Way

Matthew P Goertz

Charles S Christ

Vijay K Kapoor

Stephen K Sontag

Stuti S Rajgarhia

Scott A Betcher

William S Rossiter

Colter A Marcks

Marvin E Laue

Hubert J Visee

Scott R Galloway

Jodi Wijadi

An air oil separator includes a removable and replaceable filter element. The filter element can include a flange-receiving recess in a first end cap construction. Alternatively, the first end cap construction can include alternating radially protruding projections and radially inward recesses. Alternatively, the end cap construction can include a first section contained within a plane and a second section sloping from the first section.

Air oil separator

The current technology relates to filter media configurations where the filter media has a surface with a treatment that increases the roll off angle of the surface for a 50 μL water droplet when the surface is immersed in toluene. Some example filter media have a fluted configuration, and some example filter media have multiple layers. Filter media having multiple layers can be single facer media, for example, where one layer is planar and another layer is fluted.

Filter media configurations

Disclosed are filter media packs having a single layer of a high loft filter media and a single layer of a low loft filter media, the filter media pack characterized by the absence of oil added to the filter media pack, the filter media pack capable of filtering air laden particulates from an air stream at greater than 94% efficiency at air stream flow rates of between about 100 feet per minute and 3000 feet per minute. Also disclosed are filter assemblies formed from the filter media pack, and methods of using the filter assemblies.

Filter media pack, filter assembly, and method

Growing community of inventors

Nowthen, MN, United States of America

Timothy O Winters