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 Title: |
US5181506:
Multilayer protective gas mask
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Tardiff, Jr., Albert N.; Bel Air, MD
Grove, Corey M.; Red Lion, PA
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| Assignee: |
The United States of America as represented by the Secretary of the Army, Washington, DC
other patents from UNITED STATES OF AMERICA, ARMY (597185) (approx. 8,286)
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| Published / Filed: |
1993-01-26
/ 1991-05-02
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| Application Number: |
US1991000695142
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| IPC Code: |
Advanced:
A61F 9/02;
A62B 17/04;
A62B 18/02;
A62B 18/08;
G02C 11/00;
Core:
A62B 17/00;
A62B 18/00;
more...
IPC-7:
A62B 17/04;
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| ECLA Code: |
A62B18/08A; A61F9/02; A62B17/04; A62B18/02;
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| U.S. Class: |
Current:
128/201.22;
128/201.23;
128/201.29;
128/206.24;
Original:
128/201.22;
128/201.23;
128/201.29;
128/206.24;
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| Field of Search: |
128/201.25,205.12,205.25,205.27,205.28,206.12,206.21,206.24,206.26,863,201.22 1.29,201.15,201.23
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| Government Interest: |
GOVERNMENT INTEREST
The invention described herein may be manufactured, used, and licensed by or for the Government for governmental purposes without the payment to us of any royalty thereon.
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| Priority Number: |
| 1991-05-02 |
US1991000695142 |
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| Abstract: |
A gas mask having a facepiece comprised of three separate transparent layers secured around their peripheries in a detachable manner, the inner layer being made of soft material, the middle layer being made of material that flexibly retains its form, and the outer layer being made of material for protection against liquid agents. An eye outsert is formed from the middle layer over the area around the eyes of a wearer, and a nose cone is formed from the middle layer so as to provide space about the nose and mouth. Inhaled air is drawn through channels formed in the middle layer that extend from the periphery of the facepiece to the outsert. After passing through the outsert, inhaled air passes through a channel formed in the middle layer to the nose cone. A passageway is provided for exhaled air to pass from the nose cone. Prescription lenses for the wearer are integrally formed in a member that can be snapped into the eye outsert. Seals are provided around the periphery of the facepiece and around the nose cone by channels in the middle layers that are filled with a gel and/or compressed air. A hood of treated elastic material fits over the head of the wearer so as to draw the seals into contact with the wearer's skin. The hood surrounds the neck and has a flap that overlies the chest of the wearer, and an air pump and decontamination cannister coupled to the channels for inhaled air are mounted in the flap. Electronic controls are also mounted on the flap for controlling the pump so as to maintain a constant pressure between inhaled and exhaled air.
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| Attorney, Agent or Firm: |
Lane, Anthony T. ;
Goldberg, Edward ;
Sachs, Michael C. ;
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| Primary / Asst. Examiners: |
Burr, Edgar S.; Louis, Aaron J.
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| INPADOC Legal Status: |
Show legal status actions
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| Family: |
None
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First Claim:
Show all 22 claims |
What is claimed is:
1. A gas mask comprising:
- a face piece having a plurality of layers, the outer layer being removably attached to an adjacent layer;
- a nose cone formed in said face piece for providing an enclosed space about the nose and mouth of wearer;
- an eye outsert formed from one of said layers;
- means forming inhaled air passageways between adjacent layers from the periphery of said face piece to said eye outsert and from said eye outsert to said nose cone:
- means defining an exhaled air passageway for conducting air from said nose cone to a point outside of said mask;
- means around the periphery of said face piece for forming a seal with the head of a user when pressed thereagainst;
- means for forming a seal between the periphery of said nose cone and the skin of a user when pressed thereagainst; and
- means adapted to pull the face piece toward the head of a wearer so as to press said seals against the head of a wearer.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 39 U.S. patent(s) that reference this one
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