3m Innovative Properties Company

3m Innovative Properties

Brandon H Harmon

David M Castiglione

Andrew S Viner

James R Betz

Scott A Larson

Derek S Baker

A respiratory device includes a face seal and a unitary body that forms an interface with the face seal and includes a lens and a chassis. The chassis includes at least one port for fluidic connection.

Respiratory protection device

A respiratory protection circuit of the type having an air flow regulator disposed in an air flow path between an air supply and a respirator is improved by including an air flow splitter and a bi-directional valve. The air flow splitter is disposed in the air flow path upstream from the air flow regulator, the splitter dividing the air flow path into first and second downstream flow paths, with the first downstream flow path leading to the respirator. The bi-directional valve is disposed in the second downstream flow path wherein the bi-directional valve prevents excessive downstream air flow therethrough and prevents upstream air flow therethrough.

Respiratory system and method of use

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Murrieta, CA, United States of America

Brandon H Harmon