3m Innovative Properties Company

Simon A Mortimer

Desmond T Curran

Jason A Graves

Raymond Odell

Nicholas J Gloag

Martin J Avery

Rachael J Johnson

Seyed Abolhassan Angadjivand

Scott J Tuman

James F Dyrud

Graham J Bostock

Cynthia Y Tamaki

Tammy M Chalmers

A pouch is provided for the blower unit of a powered air-purifying respirator system, to isolate the blower unit from hazardous material such as potentially-explosive dust or gas. The pouch has an opening at one end through which the blower unit can be inserted into the pouch, and is shaped at the other end to receive the blower unit. It also has air inlet openings positioned to register with air inlets of the blower and permit the connection of the filter cartridges thereto, and an air outlet opening positioned to register with the air outlet of the blower unit and permit the connection thereto of a breathing tube of the respirator system. When the blower unit is inside the pouch, seals at the pouch openings inhibit or prevent particulate or gaseous material from entering the pouch through the openings.

Pouch for the blower unit of a powered air purifying respirator

Pouch

A respiratory mask 1 has a molded, cup-shaped, shape-retaining shell 10 on the concave side of which is a layer of filter material 11 and, on the concave side of the filter material, without any intermediate shape-retaining layer, a layer of nonwoven material 12. The layer of filter material 11 and the inside layer 12 are conformed into the cup-shaped configuration of the shape-retaining shell 10. The inside layer 12 is preferably a smooth BMF material offering improved comfort to the wearer.

Respiratory mask having comfortable inner cover web

Growing community of inventors

Berkshire, United Kingdom

Simon A Mortimer