Patent ID: 7575006

Claim:
A respirator face mask providing physiological protection, comprising: an oronasal face piece which is connectable to a respiratory gas source, said oronasal face piece having a semi-flexible lip with an edge designed to position said oronasal face piece on a user's face and, a hygienic protection system removably positioned at least partly inside said oronasal face piece and including a first part which provides hygienic protection and a second part which secures said hygienic protection system to the oronasal face piece, wherein the edge of the semi-flexible lip returns toward the center of the oronasal face piece, defining an internal groove in the oronasal face piece, and said second part of the hygienic protection system is disposed in the internal groove and expands radially in order to co-operate elastically with an internal face of the internal groove of the oronasal face piece.