Patent ID: 8042542

Claim:
A respiratory mask assembly for delivering breathable gas to a patient, comprising: a frame having a main frame body and side frame members provided on each respective lateral side of the main frame body; a headgear assembly; and a magnetic coupling assembly operatively associated with said frame and headgear assembly to allow the frame and headgear assembly to be removeably attachable one to another at a desired angular orientation therebetween wherein said side frame members each include a boss which defines a recess having one part of a two-part magnetic coupler system, and wherein the headgear comprises a pair of connection pieces each having a connector puck which includes a second part of said two-part magnetic coupler system, wherein each said connector puck is sized and configured to be inserted within a respective said recess of said side frame members and thereby magnetically couple said first and second parts of said two-part magnetic coupler system wherein the connector puck defines a plurality of alternating teeth and spaces, and wherein the recess comprises at least one stop tooth engageable with a selected one of the spaces so as to establish said desired angular orientation between said frame and said headgear assembly.