Cummins Filtration IP, Inc.

Nelson Industries, Inc.

Fleetguard, Inc.

University of Minnesota

Atmus Filtration IP Inc.

Christopher E Holm

Brian W Schwandt

Peter K Herman

Barry Mark Verdegan

Chirag D Parikh

Mark V Holzmann

Arun P Janakiraman

William C Haberkamp

Anthony Barreteau

Eric A Janikowski

Bradley A Smith

Mark T Wieczorek

Scott W Schwartz

Benjamin L Scheckel

Gerard Malgorn

Jerald J Moy

Caryn J Kindkeppel

Thomas J Braun

Pathikrit T Banerjee

Michael J Connor

Roger L Zoch

Ken Tofsland

Scott P Heckel

Saru Dawar

Gregory W Hoverson

Stephen L Fallon

Terry Shults

Brian K Wagner

Himani Deshpande

Scott Gerald Manke

Robert A Bannister

Frank Steven Bates

Kelly R Schmitz

Kurt M A Badeau

Jean-Luc Guichaoua

Emmanuel Page

Christopher Ward Macosko

Z Gerald Liu

Charles W Hawkins

Gérard Malgorn

Abhijit Shimpi

Matthew Louison

Tadeusz Jaroszczyk

Kelly Ann Detra

Buwa A Baldeh

Alain Olier

Kyle Ellison

Huanling Liu

Stephanie L Faber

Jonathan D Sheumaker

Ronan Corvec

Suryanarayanan Paneerselvam

Shiming Feng

Lee A Peck

Howard E Tews

Jeffrey A Fedorowicz

Benoit Le Roux

Kan Wang

Budi Antony

G Michael Gron, Jr

Rohit Sharma

Zaifei Wang

Clint T Deweese

Craig R Knauf

Steven R Sankbeil

Mike J Connor

Gregory K Loken

Larry T Gunderson

Kwok-Lam Ng

C Raymond Cheng

Amit Shashikant Wankhede

Matthew T VandenBush

Jeremiah Cupery

Yashpal Subedi

Miao Li

Bryan P Steffen

Merwyn I Coutinho

Daniel Y Hodges

Daniel Potratz

Kenneth M Tofsland

Ashwin K Koleshwar

Vijay Dinkar Kolhe

Raymond C Shute

Orvin D Kendall

Bharath Siddaramanna Onkarappa

Jason E Dorgan

Lawrence P Tracy

Mrinmayee Balasaheb Pokharkar

Nilesh Bhaskar Nagare

Glen Schneider

Jacek Bodasiński

Witalis Rumiński

Ryan W Rutzinski

Thomas H Steger, Jr

Ruchi Lutade

Leon Gradoń

Zakir Ahmad Quabili

Michael B Lanius

Rajath Martin

A filter assembly comprises a filter element and an outlet flange. The filter element comprises a filter media pack comprising a plurality of filter media layers stacked on top of each other to form the filter media pack. The filter media pack has an inlet surface being at an inlet portion of the filter media pack, and an outlet surface being at an outlet portion of the filter media pack. An outlet flange is coupled to the outlet portion of the filter media pack.

Filter assemblies and elements utilizing multilayered and wrapped filter media

Rotating coalescer elements that maximize the radial-projected separation surface area in a given (rotating) cylindrical volume, where flow to be cleaned is passing axially upward or downward through a separating media of the rotating coalescer element. Various example package assemblies are provided with various types of rotating configurations including cylindrical coiled media packs, frustum coiled media packs, concentric cylinders, coiled metal or polymer films with and without perforations, and/or alternating layers of different materials. The described rotating coalescers may be driven by hydraulic turbine, electric motor, belt, gear or by mounting on rotating machine components, such as rotating engine shafts or connected components.

Axial flow centrifugal separator

A filter media comprises a first fiber layer and a second fiber layer positioned downstream of the first fiber layer. The first fiber layer has a first geometric mean fiber diameter of less than 1 μm such that the geometric standard deviation of fiber diameter is greater than 2. The second fiber layer has a second geometric mean fiber diameter of less than 1 μm such that the geometric standard deviation of fiber diameter is less than 2.

Composite filter media with multiple fiber structures including nanofibers

An axial flow element for use in a liquid separation system for an internal combustion engine includes a hub, a groove, a locking member, and a flat layer. The hub includes a cylindrical outer surface. The groove is disposed in the outer surface. The groove extends in a substantially longitudinal direction along the hub from a first end of the hub to a second end of the hub. The locking member is disposed in the groove. The flat layer is disposed between the hub and the locking member.

Methods of attaching a flat layer to a hub of an axial flow element

A separation assembly comprises a housing and a plate. The housing comprises an inlet and an outlet. The plate is positioned within the housing between the inlet and the outlet. The plate comprises a wall, at least one aperture, and at least one chimney comprising an inner surface surrounding the at least one aperture and an outer surface. The chimney extends from an upstream side of the wall and encompasses only a portion of a flow path between the inlet and the upstream side of the wall such that fluid can flow radially beyond the outer surface of the at least one chimney in the housing between the inlet and the wall.

Chimney for impactor nozzles and integrated assembly

A rotating coalescer having an ejected coalesced liquid separating device is described. The separating device prevents re-entrainment of liquid into a stream of filtered gas. The rotating coalescer includes a rotating filter element or coalescing cone stack positioned within a rotating coalescer housing. The outer surface of the rotating filter element or the outlet of the coalescing cone stack is displaced from the inner surface of the rotating coalescer housing. The gap between the rotating filter element or the coalescing cone stack and the rotating coalescer housing allows for ejected coalesced liquid, such as oil, to accumulate on the inner surface of the rotating coalescer housing for drainage and allows for filtered gas, such as air, to exit through a clean gas outlet of the rotating coalescer housing.

Rotating coalescing element with directed liquid drainage and gas outlet

Rotating coalescer crankcase ventilation (CV) systems are described. The described CV systems utilize a pumping pressure created by the porous media of the rotating coalescer to maintain positive recirculation of filtered blowby gases through a potential leak gap between a static housing inlet and a spinning component of the rotating coalescer. In some arrangements, the porous media is fibrous media. The filter media may be pleated or non-pleated. The positive recirculation caused by the pressure balance prevents unfiltered blowby gases from bypassing the media of the rotating coalescer from the upstream side to the downstream side of the filter media through the gap. During operation, the pressure balance between the upstream side and downstream side of the filter media maintains the positive recirculation, which in turn maintains a high filtration efficiency.

Systems and methods for rotating coalescers maintaining positive recirculation through a dynamic seal

Filter media having a design embossed into the media are described. In some arrangements, the filter media is pleated filter media. In other arrangements, the filter media includes a plurality of channels, such as tetrahedron channels. The filter media includes a pattern of interrupted straight or angled embossments that help maintain separation between adjacent layers of the filter media. The embossments allow for two adjacent media layers (e.g., mating surfaces of the filter media) to remain separated, thereby increasing dust holding capacity and lowering pressure drop ever similarly configured filter media not having the embossments.

Interrupted, directional emboss of flat sheet

A filter assembly comprises a housing, a filter element for filtering a fluid and positionable within the housing, and an expansion membrane assembly. The expansion membrane assembly fluidly separates and is positionable between the housing and the filter element. The membrane assembly extends along an inner surface, a top surface, and an outer surface of the housing.

Expansion membrane assembly and filter head in exhaust fluid filter assembly

A filtration sealing system is provided for sealing a filter element in a housing at a mating interface therebetween. The sealing system includes a keyed interface. A replacement filter element is provided for such filtration sealing system, with the replacement filter element including a keyed interface.

Filtration sealing system

Filter media and media packs that provide robust performance in high-speed rotating coalescer (HSRC) elements for crankcase ventilation systems are described. The fiber media is HSRC fiber media. As such, the filter media has a higher resistance to compressibility then traditional coalescer filter media, such as fiber media used in low-speed rotating coalescer arrangements or stationary coalescer arrangements.

High speed rotating crankcase ventilation filter media and media pack

Referring to the figures generally, a rotating filter cartridge includes a first endcap, a second endcap, and a filter media. The filter media is positioned between the first endcap and the second endcap. The filter media creates a mechanical seal between at least one of the first endcap or the second endcap during rotation of the rotating filter cartridge without the use of a potting material. In at least one embodiment, the rotating filter cartridge further includes a body secured to the first endcap and the second endcap. At least one of the first endcap or the second endcap, and the body, may form a pocket that radially pinches the filter media to form the mechanical seal.

Utilizing a mechanical seal between a filter media and an endcap of a rotating filter cartridge

Growing community of inventors

Madison, WI, United States of America

Christopher E Holm