Modified bubble inturn mask periphery

Details Modified bubble inturn mask periphery Modified bubble inturn mask periphery

1986-06-13

1988-01-05

Kyle, Deborah L.

Surgery

Respiratory method or device

Face mask covering a breathing passage

A62B 700

Patent

active

H00003972

ABSTRACT:
An improved protective face mask periphery includes an inturn having a flat ortion extending inwardly of an inner surface of the face mask, and a curved bubble portion which is concave with respect to the inner surface of the face mask and which curves outwardly into engagement with the wearer's face. The face mask periphery thus forms a good seal with the wearer's face while at the same time being comfortable to wear.

REFERENCES:
patent: 2166164 (1939-07-01), Lehmberg
patent: 2387522 (1945-10-01), Maurer
patent: 3347230 (1967-10-01), Cupp
patent: 3545436 (1970-12-01), Holloway
patent: 4069516 (1978-01-01), Watkins, Jr.
patent: 4402316 (1983-09-01), Gadberry
patent: 4414973 (1983-11-01), Matheson et al.
patent: 4595003 (1986-06-01), Shoemaker et al.

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