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 Title: |
US4856508:
Face mask
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Tayebi, Amad; Westford, MA
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| Assignee: |
New England Thermoplastics, Inc., Lawrence, MA
other patents from NEW ENGLAND THERMOPLASTICS, INC. (398445) (approx. 3)
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| Published / Filed: |
1989-08-15
/ 1987-04-13
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| Application Number: |
US1987000041001
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| IPC Code: |
Advanced:
A62B 23/02;
Core:
A62B 23/00;
IPC-7:
A62B 7/10;
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| U.S. Class: |
Current:
128/206.12;
128/206.15;
128/206.17;
128/206.28;
Original:
128/206.12;
128/206.15;
128/206.17;
128/206.28;
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| Field of Search: |
128/206.21,206.28,207.11,207.13,206.12,206.15,206.17
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| Priority Number: |
| 1987-04-13 |
US1987000041001 |
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| Abstract: |
A face mask is disclosed that can be reusable or disposable, and which filters particulate matter and/or noxious or poisonous gasses from breathed air. The mask has a shell that is formed of polymeric closed cell foam that is impermeable to air while having good shape retention that enables the edge of the mask shell to conform and seal to the face of a wearer around their nose and mouth. The foam mask shell has one or more holes through the central portion thereof and a filter is mounted to cover said hole(s) to thereby filter all inhaled air passing through said holes. A one-way valve is mounted through the wall of the mask shell to exhaust exhaled air.
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| Attorney, Agent or Firm: |
Funk, Joseph ;
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| Primary / Asst. Examiners: |
Cohan, Alan;
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| Maintenance Status: |
E3 Expired Check current status
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Family: |
Show 4 known family members
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First Claim:
Show all 7 claims |
What is claimed is:
1. A face mask for filtering air comprising:
- a mask shell formed of a flexible, air impermeable, polymeric, closed cell foam that has physical properties that provide shape retention to said mask shell and elasticity-that enables the edge of said mask shell to conform and seal to the face of a wearer around their nose and mouth, said mask shell having one or more holes through the central portion thereof, and
- a filter cartridge mounted to cover said hole(s) to thereby filter all inhaled air passing through said holes.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 14 U.S. patent(s) that reference this one
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