Invention Grant
US09027554B2 Respirator having foam shaping layer with recessed regions surrounding air passageways
有权
具有泡沫成形层的呼吸器具有围绕空气通道的凹陷区域
- Patent Title: Respirator having foam shaping layer with recessed regions surrounding air passageways
- Patent Title (中): 具有泡沫成形层的呼吸器具有围绕空气通道的凹陷区域
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Application No.: US13311603Application Date: 2011-12-06
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Publication No.: US09027554B2Publication Date: 2015-05-12
- Inventor: Jin-Ho Lee , Jungchul Moon , Kangsoo Park , Dong-Sun Noh
- Applicant: Jin-Ho Lee , Jungchul Moon , Kangsoo Park , Dong-Sun Noh
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN St. Paul
- Agent Karl G. Hanson
- Main IPC: A62B23/02
- IPC: A62B23/02 ; A62B18/02

Abstract:
A filtering face mask 10 that has a harness 14 and a mask body 12. The mask body 12 includes a filtering structure 18 and a cup-shaped shaping layer 20 where the latter comprises a closed cell foam layer that has a plurality of fluid permeable openings 22 located in it. The openings 22 are surrounded by recessed regions 31. The filtering structure 18 does not make substantial contact with the shaping layer 20 at the recessed regions. The shaping layer 20 makes contact with the wearer's face at the mask body perimeter 19 when the respirator is being worn. The use of a foam shaping layer that has openings surrounded by recessed regions provides sufficient structural integrity or stiffness to prevent mask body collapse during respirator use while also exhibiting a low pressure drop and rapid fluid distribution of air within the mask to allow for low breathing resistance and extended wearer comfort.
Public/Granted literature
- US20130139823A1 RESPIRATOR HAVING FOAM SHAPING LAYER WITH RECESSED REGIONS SURROUNDING AIR PASSAGEWAYS Public/Granted day:2013-06-06
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