Patent ID: 8028698

Claim:
A breathing mask comprising: a central body comprising an inlet aperture for receiving a delivered gas and being configured to deliver the gas for breathing by a user, the central body including at least one cam member mount arm with a notch disposed in the arm; a central body slide surface coupled to the central body; a forehead support; a forehead support slide surface coupled to the forehead support and slideably coupled to the central body slide surface such that the forehead support is moveable along a path of travel defined by the slide surfaces; a cam member that includes at least one shaft portion rotatably disposed in said notch of the at least one cam member mount arm, a handle portion connected to the shaft portion, and a cam portion connected to the shaft portion, wherein rotation of the handle portion rotates the cam portion between a first position where the cam portion engages the forehead support slide surface to clamp the forehead support slide surface and the central body slide surface together and a second position where the cam portion is disengaged from the forehead support slide surface to allow the forehead support to be moved along said path of travel with respect to the central body.