Method of making a filtering face mask that has an...

Details Method of making a filtering face mask that has an... Method of making a filtering face mask that has an...

2006-07-04

2006-07-04

Lewis, Aaron J. (Department: 3743)

Surgery

Respiratory method or device

Means for removing substance from respiratory gas

C128S207120, C128S205270

Reexamination Certificate

active

07069931

ABSTRACT:
A method for making a filtering face mask that comprises providing a fluid-permeable multi-layered mask body comprising a structural supporting layer and a filtration layer, the multi-layered mask body being configured to fit over the nose and mouth of a person and having an aperture disposed therein; providing an exhalation valve comprising a base portion and a deformable hollow plastic extension member that extends from the base portion to a tip; inserting the tip through the aperture; and deforming the extension member so as to make an effective seal between the exhalation valve and the mask body.

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Portions of box of 10 Moldex-Metric Series 27000 Respirators.
Moldex 2701 N95 Series product brochure (Sep. 1998).
Moldex-Metric, Inc. letter to distributors (Dec. 16, 1998).

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