Surgery – Respiratory method or device – Means for removing substance from respiratory gas
Patent
1985-07-08
1989-08-15
Hindenburg, Max
Surgery
Respiratory method or device
Means for removing substance from respiratory gas
12820616, A62B 710
Patent
active
048565091
ABSTRACT:
This invention relates to improvements in face masks, particularly for use in preventing the spread of disease such as colds, influenza and the like wherein a select portion or portions of such mask contain a disease or viral destroying chemical or biological agent, such as an acid or other material impregnating or forming part of a portion of the mask, such as that portion which extends across the nasal and mouth portions of the face of a wearer. In one form, the chemical or biological agent is in the form of a solid, such as a coating or a multitude of particles or crystals disposed against a porous portion of the mask or an insert which is attachable to and replaceable with respect to a mask frame or holding unit. In another form, such chemical is in the form of a liquid. In a third form, such chemical is disposed within a multitude of micro capsules which are ruptured or otherwise activated when the mask is used and which dispense their contents during such use and distribute the same throughout a select portion of the mask. In a particular form, the mask is formed of a unitary sheet of porous paper, cellular plastic or non-woven fiber with a portion of the outer layer thereof impregnated with a viral killing chemical, such as citric acid, to prevent passage of viral agents either from a person using the mask or from the atmosphere.
REFERENCES:
patent: 443191 (1890-12-01), Illing
patent: 715052 (1902-12-01), Goodwin
patent: 838434 (1906-12-01), Morgan
patent: 1839168 (1931-12-01), Stampe
patent: 3101709 (1963-08-01), Gruenewaelder
patent: 3116969 (1964-01-01), Coleman
patent: 3457917 (1965-07-01), Mercurio
patent: 3971369 (1976-07-01), Aspelin et al.
patent: 4467799 (1984-08-01), Steinberg
patent: 4682992 (1987-07-01), Fuchs
Hindenburg Max
Markva Neil F.
Reichle K. M.
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