3m Innovative Properties Company

Minnesota Mining and Manufacturing Company

3m Innovation Properties Company

Jonathan M Lise

Glen O Gregerson

Andrew R Fox

Stephen M Sanocki

Chris A Minick

Kannan Seshadri

John J Rogers

Dennis M Glass

Brent D Niccum

Kris A Beardsley

Michael R Berrigan

Jon A Kirschhoffer

Bernard A Gonzalez

Ryan Patrick Simmers

John D Stelter

Eric R Cybulski

Ian R Owen

John G Petersen

Rufus C Sanders, Jr

Jenny L Hicks

James F Pitzen

Tien T Wu

Steven E Turch

Bryan L Gerhardt

Gerhard Lohmeier

Gerry A Hoffdahl

Himanshu Jasuja

Jean Le Normand

Brenda K Balderas

Christopher K Enstrom

Mikhail A Belkin

David W Ziemann

Jeffrey D Sheely

Richard B Muir

Michael W Vamer

Kimberly W Menzenski

Joel R Slamkowski

Nader J Barjesteh

A pleated air filter media with a plurality of continuous-contact reinforcing filaments on at least one face of the pleated air filter. The filaments have locally-thinned bending zones each of which is registered with pleat tip or pleat valley of the pleated air filter media.

Pleated air filter with reinforcing filaments comprising locally-thinned bending zones

Air filter

A rigid, channel-framed, pleated air filter, with a plurality of linear bridging filaments on at least an upstream face of the pleated air filter media of the filter.

Channel-framed, pleated air filter with bridging filaments

An air filter media () including a pleated fibrous filtration web () with a first major side () that includes at least one sorbent-loaded area () in which sorbent particles () are present on a first major surface () of the pleated fibrous filtration web (), at least some of the sorbent particles () being post-pleat-deposited sorbent particles.

Air filter media with post-pleat-deposited sorbent particles

A rigid, channel-framed, non-compressible, non-nestable, pleated air filter, comprising: a tightly-pleated air filter media comprised of a nonwoven fibrous web and with an upstream face and a downstream face, wherein the tightly-pleated air filter media comprises a plurality of upstream (and downstream) pleat tips and upstream (and downstream) pleat valleys, the tightly-pleated air filter media comprising a plurality of upstream (and downstream) linear bridging filaments that are at least substantially parallel to each other and are oriented at least substantially orthogonal to the pleat direction and are extrusion-bonded to at least some of the upstream (and downstream) pleat tips, and, a channel frame comprising four major frame portions, with each major frame portion being mounted on one of the four major edges of the pleated air filter media.

A nestable framed pleated air filter, including a non-self-supporting, compressible, pleated air filter media with a plurality of oppositely-facing pleats and with a plurality of upstream pleat tips and downstream pleat tips and downstream pleat valleys, the pleated air filter media further including a plurality of bridging filaments that are bonded to at least some of the upstream pleat tips. The filter includes a frame with sidewalls that are angled so that the framed pleated air filter is nestable.

Nestable framed pleated air filter and method of making

A framed air filter, comprising an air filter media having a generally rectangular perimeter with four major edges, and a frame comprising four frame portions. Each frame portion of the frame is mounted on one of the four major edges of the air filter media and met with neighbouring frame portions to form corners of the frame. At least one of the frame portions is provided by a frame piece that comprises first, second, third and fourth panels that are foldably connected by fold lines, which single frame piece is wrapped in a generally rectangular configuration so that the fourth panel comprises a forward terminal end that is abutted proximal a rearward major surface of the first panel. The third panel provides a rear wall of the frame portion with an inner edge provided by a fold line connecting the third panel to the fourth panel, wherein the inner edge is bowed.

Air filter comprising frame with bowed inner edge

Systems and methods for automated fabrication of pleated filters that promote user-selected adjustment of the pleat spacing generated by the system. A lower conveyor of a pleat spacing station is operated at a selected conveyor rate. A gathered pleated segment of filter material is received at the pleat spacing station. The pleat spacing station expands a pleat spacing of the gathered pleated segment in forming a pleated filter segment. Expansion of the pleats at the pleat spacing station is accomplished by initially engaging the filter material along the lower conveyor, with the conveyor rate being alterable by a user, including on the fly alteration, to establish a desired pleat spacing and thus pleat density in the pleated filter.

System and method for making pleated filter media

An air filter for use in a residential HVAC system includes filtration media including a base layer and a sorbent layer including adhesive fibers and sorbent particles.

Air filter with sorbent particles

A framed pleated air filter, including a non-self-supporting, compressible, pleated air filter media with a plurality of oppositely-facing pleats and with a plurality of upstream pleat tips and downstream pleat tips, the pleated air filter media further including a plurality of bridging filaments that are bonded to at least some of the upstream pleat tips. The framed pleated air filter does not include any support member on the downstream face of the pleated air filter media.

Framed pleated air filter with upstream bridging filaments

Growing community of inventors

Woodbury, MN, United States of America

Jonathan M Lise