Surgery – Respiratory method or device – Means for removing substance from respiratory gas
Patent
1986-04-25
1987-08-25
Recla, Henry J.
Surgery
Respiratory method or device
Means for removing substance from respiratory gas
A62B 700
Patent
active
046885668
ABSTRACT:
A filter mask for filtering air inhaled and exhaled from the mouth and nostrils while providing a positive facial lock at all edges of the mask. In a preferred embodiment of the invention both the upper and lower edges of the mask are provided with moldable stiffeners for conforming to the shape of the wearer's nose and cheek area and the lower jaw and chin area, respectively. The lower edge is folded so as to form a reverse pleat which conforms to the shape of the lower jaw. A single headband may be used to hold the mask on the head. The peripheral edges of the mask are bound. The mask provides excellent filtration since the positive facial lock around all edges of the mask substantially prevents air from leaking between the mask and the face.
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K. B. Rogers, "An Investigation Into the Efficiency of Disposable Face Masks", J. Clin. Pathol., vol. 33, pp. 1086 to 1091 (received for publication Mar. 18, 1980).
Professional Tape Converters, Inc.
Recla Henry J.
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