US Patent 7523750 Breathing respirator

The combination noise suppression and breathing respirator of the present invention includes a face mask of the snorkel or diving type, the facemask sealing against the face of the user around the nose, cheeks, eyes and forehead of the wearer. The facemask has a nosepiece having an exhalation flap check valve for exhalation by the user. Each side of the face mask has a one-way inlet valve at a connection which connects with rearward extending dual use air channel and straps. A noise suppression and air filter module is worn over each ear of the user and is attached to respective dual use air channel and straps. Head bands extend around the back of the wearer's head between air filter modules an adjustably connected by buckles thereto.