Mask

Details Mask Mask

1992-07-29

1994-01-18

Burr, Edgar S.

Surgery

Respiratory method or device

Means for transmitting, or facilitating, voice communication...

12820124, 12820623, A61M 1500

Patent

active

052792862

ABSTRACT:
A mask having a removable respirator, a viewing glass and flexible fastening straps on the rear side thereof is provided. The respirator and the viewing glass are fixed by respective fixing rings to suitable positions in front of the mask. The fixing rings are tightened by a screw having a turning grip formed on the top thereof, so that it makes possible simple disassembly without the use of tools. The screw is also provided with a flange adapted for convenient attachment of a speech microphone thereto.

REFERENCES:
patent: 2238492 (1941-04-01), Leguillon
patent: 2420281 (1947-05-01), Zbar
patent: 2597764 (1952-05-01), Tucker et al.
patent: 2814293 (1957-11-01), Gabb et al.
patent: 2996722 (1961-08-01), Jacobs
patent: 3259127 (1966-07-01), Klinger et al.
patent: 3314424 (1967-04-01), Berman
patent: 3315673 (1967-04-01), Morton, Jr.
patent: 3968793 (1976-07-01), Geissler
patent: 4164942 (1979-08-01), Beard et al.
patent: 4875477 (1989-10-01), Waschke et al.

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