Surgery – Respiratory method or device – Including body or head supported means covering user's scalp
Patent
1991-05-02
1993-01-26
Burr, Edgar S.
Surgery
Respiratory method or device
Including body or head supported means covering user's scalp
12820123, 12820129, 12820624, A62B 1704
Patent
active
051815060
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.
REFERENCES:
patent: 2800901 (1957-07-01), Monro
patent: 2810386 (1957-10-01), Reed
patent: 2821192 (1958-01-01), Monro
patent: 4296746 (1981-10-01), Mason, Jr. et al.
patent: 4323063 (1982-04-01), Fisichella
patent: 4534344 (1985-08-01), Constance-Hughes
patent: 4764990 (1988-08-01), Market
patent: 4881538 (1989-11-01), Angell
patent: 5056512 (1991-10-01), Bower et al.
Grove Corey M.
Tardiff, Jr. Albert N.
Burr Edgar S.
Goldberg Edward
Lane Anthony T.
Louis Aaron J.
Sachs Michael C.
LandOfFree
Multilayer protective gas mask does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multilayer protective gas mask, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multilayer protective gas mask will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1407632