Donaldson Comapny, Inc.

Other

Robert M Rogers

Keh B Dema

Ming Ouyang

Brad E Kahlbaugh

Gary John Rocklitz

Anitha M Mathew

Paul L Kojetin

Derek Owen Jones

Gregory L LaVallee

Michael A Madden

Timothy D Sporre

Chuanfang Yang

Linda M Olson

Joe Israel

Daniel Eric Adamek

Gregory L Lavallee

Andrew Christian Dahlgren

Giancarlo M Izzi

Daniel Little

Timothy O Winters

Keith Alderson

Gary J Rocklitz

Aflal Rahmathullah

Gregory S Tronnes

David E Carlson

David Meline Webb

Jan Leo Cappuyns

Joseph Israel

Lorraine Keating-Klika

Egide Emmanuel Paul Baudry Moreau

Eugene Dunn

Daniel E Adamek

Embodiments disclosed herein relate to filter media having a downstream layer of filter material and an upstream layer of fibers. The downstream layer of filter material has a capture efficiency of at least 10% and the upstream layer of fibers has a mean fiber diameter of at least 10 microns and a solidity of less than 10%. A spacing structure defines a mean void distance between the upstream layer of fibers and the downstream layer of filter material.

Filter media with improved dust loading

Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units, such as breather caps. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate and/or fluid mist load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.

Filter medium and breather filter structure

Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.

Filter medium and structure

A filtration media pack is provided having a plurality of layers of single facer media. The layer of single facer media includes a fluted sheet, a facing sheet, and a plurality of flutes extending between the fluted sheet and the facing sheet and having a flute length extending from a first face to a second face of the filtration media pack. A first portion of the plurality of flutes are closed to unfiltered fluid flowing into the first portion of the plurality of flutes, and a second portion of the plurality of flutes are closed to unfiltered fluid flowing out of the second portion of the plurality of flutes so that fluid passing into one of the first face and the second face of the media pack and out the other face of the media pack passes through media to provide filtration of the fluid.

Filtration media pack, filter element, and methods

A thermally bonded filtration media that can be used in high temperature conditions in the absence of any loss of fiber through thermal effects or mechanical impact on the fiber components is disclosed. The filter media can be manufactured and used in a filter unit or structure, can be placed in a stream of removable fluid, and can remove a particulate load from the mobile stream at an increased temperature range. The combination of bi-component fiber, other filter media fiber, and other filtration additives provides an improved filtration media having unique properties in high temperature, high performance applications.

High temperature treated media

An air filtration media pack is provided having a plurality of layers of single facer media. The layer of single facer media includes a fluted sheet, a facing sheet, and a plurality of flutes extending between the fluted sheet and the facing sheet and having a flute length extending from a first face of the filtration media pack to a second face of the filtration media pack. A first portion of the plurality of flutes are closed to unfiltered air flowing into the first portion of the plurality of flutes, and a second portion of the plurality of flutes are closed to unfiltered air from flowing out of the second portion of the plurality of flutes so that air passing into one of the first face and the second face of the media pack and out the other of the first face and the second face of the media pack passes through media to provide filtration of the air. The fluted sheet includes repeating internal peaks facing toward the facing sheet and repeating external peaks facing away from the facing sheet. In addition, the fluted sheet can include at least one ridge extending along at least 50% of the flute length between an internal peak and an adjacent external peak. Additional characterizations of an air filtration media pack, air filtration media, and methods of making and using are provided.

Air filtration media pack, filter element, air filtration media, and methods

An adjustable pet waste scoop includes a handle shaft and a scoop shaft connected in a telescopic configuration, such that the overall length of the device is adjustable. A scoop is connected to a lower end of the scoop shaft. The scoop includes an open-ended front portion extending in a first direction perpendicular to the scoop shaft and an open-ended rear portion extending in an opposing second direction at an upward angle with respect to the front portion. The scoop may include one or more clips for securing a pet waste bag to the scoop and may further include annular grooves that receive clamps or other fasteners for further securing the pet waste bag. The open-ended configuration and fasteners allow a pet waste bag to be attached to the scoop in multiple configurations according to user preference.

Adjustable pet waste scoop

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

Minnetonka, MN, United States of America

Robert M Rogers