Patent ID: 8905018

Claim:
A breathing apparatus comprising: (a) a filter; (b) a fan unit; (c) a face piece for covering the whole face of a user; (d) a nose cup for covering the mouth and the nose of the user; and (e) a breath monitoring apparatus, wherein the filter is detachably connected to the fan unit, the fan unit is detachably connected to the face piece from an outside of the face piece, the nose cup is detachably connected to the face piece from an inside of the face piece, and the fan unit operates synchronously with a breath timing of a user that is detected by the breath monitoring apparatus, wherein the breath monitoring apparatus comprises a diaphragm and a sensor for detecting movement of the diaphragm, wherein the breath monitoring apparatus is disposed in the fan unit, wherein an air passage and a space independent of the air passage arranged to accommodate the diaphragm and the sensor are formed in the fan unit, wherein a hole is formed in the face piece so that, when the fan unit is attached to the face piece, the hole and the space communicate, wherein a hole is formed in the nose cup, so that, when the nose cup is attached to the face piece, the hole in the nose cup and the hole in the face piece communicate, and wherein an internal space of the nose cup communicates with the space in the fan unit through the hole in the nose cup and the hole in the face piece when the fan unit and the nose cup are connected to the face piece.