Filtering Face-Piece Respirator Having Nose Cushioning Member
Assignee3M Innovative Properties Company
InventorDean R. Duffy
Life of this patent
Estimating the term…
Abstract
A filtering face-piece respirator 10 that includes a harness 14 and a mask body 12 that has a multi-layer filtering structure 16. The respirator includes a cushioning member 64 positioned proximate the nose area of the mask body 12, enveloped by a layer of the filtering structure 16. The cushioning member 64 is a compressible material and may be elastic. The cushioning member 64 can be positioned directly opposite of a nose clip 56.
Claims21
1-10. (canceled)
A filtering face-piece respirator that comprises:
- a harness;
- and
- a mask body comprising a multi-layer filtering structure forming at least one pocket;
- a nose clip;
- and
- a cushioning member having a thickness of at least 1 mm present within the pocket.
The filtering face piece respirator of claim e cushioning member comprises a foam.
A method of making a filtering face-piece respirator that comprises:
- forming a filtering structure comprising multiple layers by joining the layers together;
- inserting a cushioning member having a thickness of at least 2 mm and a width of no more than 20 mm between the layers prior to joining;
- and
- forming a mask body from the filtering structure having the cushioning member therein.
Dependencies are inferred from the claim text.