3M Innovative Properties Company

3M Innovation Properties Company

Dennis M Glass

Michael Alan Meis

Eric O Hemberg

Douglas D Fletcher

Oscar M Hemberg

Jayant Chakravarty

Daniel W Hennen

Jonathan B Arthur

Karl W Bloedorn

Gene B Portelli

Lyle L Luppes

Jonathan M Lise

Stephen M Sanocki

Brenda K Balderas

Andrew R Fox

Glen O Gregerson

Mark A Sanocki

Christopher K Enstrom

Fiona E Menken

Michael L Munson

Michael A Meis

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

An air filter includes filter media, a sensor, and circuitry coupled to the sensor, the circuitry configured to receive data from the sensor representative of the condition of the filter media and wirelessly transmit such data. The data may be received by a device with a display to use the information to present an indication of the filter media condition to a user.

Air filter condition sensing

Devices, systems and methods for obtaining data representative of the condition of an air filter media of an air filter installed in a powered air-handling system, and for using such data to present an indication of the air filter media condition to a user. The devices, systems and methods use pressure information representative of at least a downstream pressure of the powered air-handling system.

A framed air filter that includes air filter media and a frame with four frame portions. At least one frame portion includes an inner sidewall and an outer sidewall that meet at a sidewall junction. The sidewall junction extends along a score line that includes at least one cut-scored segment and one crush-scored segment.

Framed air filter with skip-scored sidewall junction

Air filter

A framed air filter and method of making. The framed air filter includes air filter media and a frame with a frame portion with an upstream flange and a downstream flange and an inner sidewall and an outer sidewall. The inner sidewall includes an open-ended, offset slot.

Framed air filter with offset slot, and method of making

Herein are disclosed devices and methods that can be used to provide an indication of the need to change a filter in a small forced air handling unit, based on the actual operating time (runtime) of the unit. The methods rely on the use of at least one vibration sensor that is placed in contact with a surface of an exterior component of the air handling unit and that can determine whether the unit is operating by sensing vibrations of the surface caused by operation of the unit.

Runtime sensor for small forced air handling units

Growing community of inventors

Cottage Grove, MN, United States of America

Dennis M Glass