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 Title: |
US5080094:
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: |
Better Breathing, Inc., Lawrence, MA
other patents from BETTER BREATHING, INC. (62431) (approx. 4)
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| Published / Filed: |
1992-01-14
/ 1988-10-19
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| Application Number: |
US1988000263068
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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:
128/205.29;
128/206.12;
Original:
128/205.29;
128/206.12;
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| Field of Search: |
128/205.24,205.29,207.11,207.18,206.13,206.17,863,207.12,206.25,206.11,206.15,206.12
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| Priority Number: |
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| Abstract: |
A face mask is disclosed that can be reusable or disposable, and which filters particulate matter and noxious and poisonous gasses from breathed air. The mask has a mask shell that is thermoformed of cross-linked, closed-cell foam sheet that is impermeable to air while having good shape retention and elasticity. The mask shell is perforated with multiple holes in its central area to permit inhaled air to pass through the otherwise impermeable shell. This mask shell is stiff enough to support filter liners made of, for example, an activated charcoal impregnated fibrous sheet that covers the holes and is retained to the inside and/or the outside of the mask shell by a retainer which is easily removed to replace the filter liner(s). Alternatively, the filter liner(s) may be bonded to the inside and/or the outside surface of the foam mask shell to make a disposable mask. 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: |
Burr, Edgar S.; Funk, Stephen R.
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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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| Parent Case: |
This is a division of application Ser. No. 041,001, filed Apr. 13, 1987, now U.S. Pat. No. 4,856,508 issued on Aug. 15, 1989.
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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 foam material and having a central portion, said mask shell having at least one hole through the central portion thereof, said face mask having an inner surface toward the face of a wearer of the face mask and an outer surface away from the face of a wearer of the face mask;
- a first filter liner for filtering the air passing through said at least one hole, said first filter liner being placed against and in direct contact with the inner surface of said mask shell without the need for a canister to hold said first filter liner, and covering said at least one hole to thereby filter all inhaled air passing through said at least one hole, said first filter liner never touching the face of the wearer of the face mask; and
- a retainer that mounts to said mask over said first filter liner to hold said first filter liner directly against and in contact with said mask shell over said at least one hole.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 25 U.S. patent(s) that reference this one
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