Respirators

Details Respirators Respirators

2006-08-15

2006-08-15

Bennett, Henry (Department: 3743)

Surgery

Respiratory method or device

Including body or head supported means covering user's scalp

C128S202110, C128S202190

Reexamination Certificate

active

07089931

ABSTRACT:
A respirator (1) having a plurality of internal masks (2, 3) within an external mask (4), the inner masks (2, 3) being linked by ducts (8, 9) so as to direct the inhaled air from the outside of the mask to the oronasal area via an ocular mask. The oronasal mask (3) has a secondary valve (12) that is sprung so as to operate within the timeframe of the exhalation part of the breathing cycle, the exhaled air being ejected into the hollow outer body of the mask (4).

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