Patent ID: 7047972

Claim:
A respiratory mask assembly for delivering breathable gas to a patient, comprising: a frame having a main body and a side frame member provided on each lateral side of the main body; at least one first connector portion operatively associated with the frame assembly and including a retainer flange having a central hub and a plurality of retaining tabs extending transversely from the central hub; a headgear assembly including at least one strap portion, said headgear assembly being structured to support the frame assembly; and at least one second connector portion including a mounting flange having a central hole and a plurality of slots, each of the slots being contiguous with the central hole and extending transversely from the central hole, wherein: the central hub and the plurality of retaining tabs of the retainer flange, respectively, are axially insertable into the central hole and the plurality of slots of the mounting flange, and subsequent to axial insertion, the first and second connector portions are rotatable relative to one another to selectively couple the first and second connector portions via the retainer flange and the mounting flange.