3m Innovative Properties Company

Gene B Portelli

Michael Alan Meis

Eric O Hemberg

Douglas D Fletcher

Jayant Chakravarty

Oscar M Hemberg

Daniel W Hennen

Jonathan B Arthur

Dennis M Glass

Lyle L Luppes

Karl W Bloedorn

Matthew T Scholz

Andrew R Fox

Kannan Seshadri

Stephen M Sanocki

Nicolas A Echeverri

Zhiqun Zhang

Amanda B Dauphinais

Leonard M Martinez

Michael A Meis

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.

The present disclosure generally relates to air filters expandable from a collapsed arrangement to an expanded, end-use arrangement and to methods of making, using, and installing such air filters. Some embodiments relate to an air filter having an expanded state and a collapsed state. The air filter includes a filter media assembly including (1) filter media including a plurality of pleats, (2) first and second opposing sides, and (3) first and second opposing ends. The air filter also includes a shape retention structure capable of being connected to at least a portion of the filter media assembly and capable of retention the filter media assembly in the expanded state. A spacing distance between adjacent pleats in the filter media is greater in the expanded state of the air filter than in the collapsed state of the air filter. In some embodiments, the air filter is an HVAC air filter.

Collapsible air filter

Growing community of inventors

Lake Elmo, MN, United States of America

Gene B Portelli