3m Innovative Properties Company

Michael J Svendsen

John S Huberty

William A Mittelstadt

David M Blomberg

Thomas I Insley

Nathan A Abel

Gary E Dwyer

Carl W Raines, Iii

Michael J Cowell

David R Stein

Ryan D Kracht

Michael J Thuente

Kent E Lageson

Dylan T Cosgrove

Chaodi Li

David M Castiglione

Elizabeth D Cadogan

Joseph S Warner

Ramnath Subramaniam

Carl W Iii Raines

A dual-molded silicone-polyamide composite article including a first molded piece that comprises a blend of polyamide and an ethylene-vinyl alcohol copolymer and a second molded piece that comprises a thermoset, hydrosilylation-cure silicone polymer. A portion of a surface of the second molded piece is autogenously bonded to a portion of a surface of the first molded piece.

Dual-molded polyamide-silicone composite article and methods of making

A respiratory mask body defining a breathable air zone for a wearer and having a shut-off valve is provided. In an exemplary embodiment, the mask body includes one or more inlet ports configured to receive one or more breathing air source components. The shut-off valve is operable between a closed position and an open position, and when in a closed position the shut-off valve prevents fluid communication between the one or more inlet ports and the breathable air zone and the shut-off valve returns to an open position in the absence of an applied force.

Respirator negative pressure fit check devices and methods

The present description provides a filter element that includes an end or side portion attached breather tube. One exemplary filter element described herein includes filter media having front and rear walls each including a proximal end and a distal end, a side portion at the proximal ends of the front and rear walls, and an outlet. The filter element further includes a breather tube attached to the filter media in fluid communication with the outlet. The outlet is positioned at least partially on the side portion, and the front and rear walls of the filter media are joined together at least partially along a perimeter.

Flexible filter element having an end outlet

Filter element having a pattern

Filter element having a connector

Growing community of inventors

Blaine, MN, United States of America

Michael J Svendsen