Patent ID: 7882837

Claim:
A mask assembly for delivering a flow of pressurized breathable gas to a patient, comprising: a face contact portion configured to engage the patient's face and encompass at least the patient's nostrils; a forehead support connected to the face contacting portion; a pad formed of deformable material, comprising an outer wall having a first side configured to engage a user's forehead and a second side having engaged surfaces configured to rest against engaging surfaces of the forehead support; at least one retaining wall provided between the first side and the second side; and at least one retained portion configured to be retained by a retainer formed on the forehead support, wherein a space is defined between the outer wall and the engaged surfaces, the space comprises a substantially constant cross sectional profile, and the outer wall, the at least one retaining wall, and the engaged surfaces are formed of a deformable elastomeric material, wherein deformation of the pad occurs by deflection of at least the outer wall and the at least one retaining wall; and a headgear configured to maintain the face contact portion in contact with the patient's face and the pad in contact with the patient's forehead.