RESPIRATORS

摘要

The invention provides a nose occlusion facility on respirators of the type in which a hood and visor combination envelop? the head of a wearer and carries an oronasal mask for supplying respiratory gas to the wearer. The nose occlusion facility is manually operable and comprises a lever device mounted on the exterior of the visor and associated with arms operative to pinch the wearer's nose in the region of the lobes thereof.